From f95ba4a3bd40e2c67a58be90a285b1dae190e733 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Sun, 11 Aug 2019 16:46:32 +1000
Subject: [PATCH 01/20] Use new fee calculation.

---
 index.js | 60 +++++++++++++++++++++++++++-----------------------------
 1 file changed, 29 insertions(+), 31 deletions(-)

diff --git a/index.js b/index.js
index 8e76ec5..506b120 100644
--- a/index.js
+++ b/index.js
@@ -4,7 +4,6 @@ const bitcoin = require('bsv');
 const explorer = require('bitcore-explorers');
 const defaults = {
   rpc: "https://api.bitindex.network",
-  fee: 400,
   feeb: 1.4
 }
 // The end goal of 'build' is to create a hex formated transaction object
@@ -12,13 +11,13 @@ const defaults = {
 // and return a hex formatted string of either a tranaction or a script
 var build = function(options, callback) {
   let script = null;
-  let rpcaddr = (options.pay && options.pay.rpc) ? options.pay.rpc : defaults.rpc;
+  const rpcaddr = (options.pay && options.pay.rpc) ? options.pay.rpc : defaults.rpc;
   if (options.tx) {
     // if tx exists, check to see if it's already been signed.
     // if it's a signed transaction
     // and the request is trying to override using 'data' or 'pay',
     // we should throw an error
-    let tx = new bitcoin.Transaction(options.tx)
+    const tx = new bitcoin.Transaction(options.tx)
     // transaction is already signed
     if (tx.inputs.length > 0 && tx.inputs[0].script) {
       if (options.pay || options.data) {
@@ -33,12 +32,29 @@ var build = function(options, callback) {
       script = _script(options)
     }
   }
+
+  const tx = new bitcoin.Transaction(options.tx);
+
+  if (script) {
+    tx.addOutput(new bitcoin.Transaction.Output({ script: script, satoshis: 0 }));
+  }
+
+  const opt_pay = options.pay || {};
+  if (opt_pay.fee) {
+    tx.fee(opt_pay.fee)
+  } else {
+    const feeb = opt_pay.feeb || defaults.feeb;
+    tx.feePerKb(feeb * 1000);
+  }
+
   // Instantiate pay
   if (options.pay && options.pay.key) {
     // key exists => create a signed transaction
-    let key = options.pay.key;
+    const key = options.pay.key;
     const privateKey = new bitcoin.PrivateKey(key);
     const address = privateKey.toAddress();
+    tx.change(address)
+
     const insight = new explorer.Insight(rpcaddr)
     insight.getUnspentUtxos(address, function (err, res) {
       if (err) {
@@ -47,45 +63,27 @@ var build = function(options, callback) {
       }
 
       if (options.pay.filter && options.pay.filter.q && options.pay.filter.q.find) {
-        let f = new mingo.Query(options.pay.filter.q.find)
+        const f = new mingo.Query(options.pay.filter.q.find)
         res = res.filter(function(item) {
           return f.test(item)
         })
       }
-      let tx = new bitcoin.Transaction(options.tx).from(res);
 
-      if (script) {
-        tx.addOutput(new bitcoin.Transaction.Output({ script: script, satoshis: 0 }));
-      }
+      tx.from(res);
+
       if (options.pay.to && Array.isArray(options.pay.to)) {
         options.pay.to.forEach(function(receiver) {
-          tx.to(receiver.address, receiver.value)
+          if (receiver.value >= 546) {
+            tx.to(receiver.address, receiver.value)
+          }
         })
       }
 
-      tx.fee(defaults.fee).change(address);
-      let opt_pay = options.pay || {};
-      let myfee = opt_pay.fee || Math.ceil(tx._estimateSize()* (opt_pay.feeb || defaults.feeb));
-      tx.fee(myfee);
-
-      //Check all the outputs for dust
-      for(var i=0;i<tx.outputs.length;i++){
-        if(tx.outputs[i]._satoshis>0 && tx.outputs[i]._satoshis<546){
-          tx.outputs.splice(i,1);
-          i--;
-        }
-      }
-      let transaction = tx.sign(privateKey);
-      callback(null, transaction);
+      tx.sign(privateKey);
+      callback(null, tx);
     })
   } else {
-    // key doesn't exist => create an unsigned transaction
-    let fee = (options.pay && options.pay.fee) ? options.pay.fee : defaults.fee;
-    let tx = new bitcoin.Transaction(options.tx).fee(fee);
-    if (script) {
-      tx.addOutput(new bitcoin.Transaction.Output({ script: script, satoshis: 0 }));
-    }
-    callback(null, tx)
+    callback(null, tx);
   }
 }
 var send = function(options, callback) {

From 8104e963a67d6e50ae0014cfb72a4780eea47938 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Sun, 11 Aug 2019 20:58:16 +1000
Subject: [PATCH 02/20] Heavy refactor, breaking changes.

---
 index.js     | 220 ++++++++++++++++++++-------------------------------
 package.json |   5 +-
 2 files changed, 87 insertions(+), 138 deletions(-)

diff --git a/index.js b/index.js
index 506b120..df7b521 100644
--- a/index.js
+++ b/index.js
@@ -1,152 +1,102 @@
-const mingo = require("mingo")
-const _Buffer = require('buffer/')
-const bitcoin = require('bsv');
-const explorer = require('bitcore-explorers');
+require("buffer");
+const bsv = require("bsv");
+const { Insight } = require("bitcore-explorers");
+
 const defaults = {
   rpc: "https://api.bitindex.network",
-  feeb: 1.4
-}
-// The end goal of 'build' is to create a hex formated transaction object
-// therefore this function must end with _tx() for all cases 
-// and return a hex formatted string of either a tranaction or a script
-var build = function(options, callback) {
-  let script = null;
-  const rpcaddr = (options.pay && options.pay.rpc) ? options.pay.rpc : defaults.rpc;
-  if (options.tx) {
-    // if tx exists, check to see if it's already been signed.
-    // if it's a signed transaction
-    // and the request is trying to override using 'data' or 'pay',
-    // we should throw an error
-    const tx = new bitcoin.Transaction(options.tx)
-    // transaction is already signed
-    if (tx.inputs.length > 0 && tx.inputs[0].script) {
-      if (options.pay || options.data) {
-        callback(new Error("the transaction is already signed and cannot be modified"))
-        return;
-      }
-    }
-  } else {
-    // construct script only if transaction doesn't exist
-    // if a 'transaction' attribute exists, the 'data' should be ignored to avoid confusion
-    if (options.data) {
-      script = _script(options)
-    }
-  }
+  feeb: 1.0
+};
+
+let insight;
+
+const connect = (endpoint, network = "livenet") => {
+  insight = new Insight(endpoint || defaults.rpc, network);
+};
+
+const getUTXOs = address =>
+  new Promise((resolve, reject) => {
+    insight.getUnspentUtxos(address, (err, res) => {
+      if (err) reject(err);
+      else resolve(res);
+    });
+  });
 
-  const tx = new bitcoin.Transaction(options.tx);
+const broadcast = rawtx =>
+  new Promise((resolve, reject) => {
+    insight.broadcast(rawtx, (err, txid) => {
+      if (err) reject(err);
+      else resolve(txid);
+    });
+  });
 
+const build = async ({ data, safe, pay }) => {
+  const tx = new bsv.Transaction();
+
+  const script = createDataScript(data, safe);
   if (script) {
-    tx.addOutput(new bitcoin.Transaction.Output({ script: script, satoshis: 0 }));
+    tx.addOutput(new bsv.Transaction.Output({ script, satoshis: 0 }));
   }
 
-  const opt_pay = options.pay || {};
-  if (opt_pay.fee) {
-    tx.fee(opt_pay.fee)
-  } else {
-    const feeb = opt_pay.feeb || defaults.feeb;
-    tx.feePerKb(feeb * 1000);
-  }
+  const { fee, feeb, key, to = [], filter } = pay;
+
+  if (fee) tx.fee(fee);
+  else tx.feePerKb((feeb || defaults.feeb) * 1000);
 
-  // Instantiate pay
-  if (options.pay && options.pay.key) {
-    // key exists => create a signed transaction
-    const key = options.pay.key;
-    const privateKey = new bitcoin.PrivateKey(key);
+  to.forEach(receiver => tx.to(receiver.address, receiver.value));
+
+  if (key) {
+    const privateKey = new bsv.PrivateKey(key);
     const address = privateKey.toAddress();
-    tx.change(address)
-
-    const insight = new explorer.Insight(rpcaddr)
-    insight.getUnspentUtxos(address, function (err, res) {
-      if (err) {
-        callback(err);
-        return;
-      }
-
-      if (options.pay.filter && options.pay.filter.q && options.pay.filter.q.find) {
-        const f = new mingo.Query(options.pay.filter.q.find)
-        res = res.filter(function(item) {
-          return f.test(item)
-        })
-      }
-
-      tx.from(res);
-
-      if (options.pay.to && Array.isArray(options.pay.to)) {
-        options.pay.to.forEach(function(receiver) {
-          if (receiver.value >= 546) {
-            tx.to(receiver.address, receiver.value)
-          }
-        })
-      }
-
-      tx.sign(privateKey);
-      callback(null, tx);
-    })
-  } else {
-    callback(null, tx);
-  }
-}
-var send = function(options, callback) {
-  if (!callback) {
-    callback = function() {};
+    tx.change(address);
+
+    let utxos = await getUTXOs(address);
+    if (filter) utxos = utxos.filter(filter);
+    tx.from(utxos);
+
+    tx.sign(privateKey);
   }
 
-  build(options, function(err, tx) {
-    if (err) {
-      callback(err);
+  return tx;
+};
+
+const send = async (options, tx) => {
+  if (options && !tx) tx = await build(options);
+  return await broadcast(tx.serialize());
+};
+
+const createDataScript = (data, safe) => {
+  if (!data) return;
+  if (typeof data === "string") return bsv.Script.fromHex(data);
+
+  const s = new bsv.Script();
+
+  // Add OP_RETURN
+  if (safe) s.add(bsv.Opcode.OP_FALSE);
+  s.add(bsv.Opcode.OP_RETURN);
+
+  // Add data
+  data.forEach(item => {
+    if (typeof item === "object" && item.hasOwnProperty("op")) {
+      s.add({ opcodenum: item.op });
       return;
     }
 
-    let rpcaddr = (options.pay && options.pay.rpc) ? options.pay.rpc : defaults.rpc;
-    const insight = new explorer.Insight(rpcaddr)
-    insight.broadcast(tx.toString(), callback)
-  })
-}
-// compose script
-var _script = function(options) {
-  var s = null;
-  if (options.data) {
-    if (Array.isArray(options.data)) {
-      s = new bitcoin.Script();
-      if (options.safe) {
-        s.add(bitcoin.Opcode.OP_FALSE);
-      }
-      // Add op_return
-      s.add(bitcoin.Opcode.OP_RETURN);
-      options.data.forEach(function(item) {
-        // add push data
-        if (item.constructor.name === 'ArrayBuffer') {
-          let buffer = _Buffer.Buffer.from(item)
-          s.add(buffer)
-        } else if (item.constructor.name === 'Buffer') {
-          s.add(item)
-        } else if (typeof item === 'string') {
-          if (/^0x/i.test(item)) {
-            // ex: 0x6d02
-            s.add(Buffer.from(item.slice(2), "hex"))
-          } else {
-            // ex: "hello"
-            s.add(Buffer.from(item))
-          }
-        } else if (typeof item === 'object' && item.hasOwnProperty('op')) {
-          s.add({ opcodenum: item.op })
-        }
-      })
-    } else if (typeof options.data === 'string') {
-      // Exported transaction 
-      s = bitcoin.Script.fromHex(options.data);
+    if (typeof item === "string" && /^0x/i.test(item)) {
+      // e.g. 0x6d02
+      s.add(Buffer.from(item.slice(2), "hex"));
+      return;
     }
-  }
+
+    s.add(Buffer.from(item));
+  });
+
   return s;
-}
-var connect = function(endpoint) {
-  var rpc = endpoint ? endpoint : defaults.rpc;
-  return new explorer.Insight(rpc);
-}
-module.exports = {
-  build: build,
-  send: send,
-  bsv: bitcoin,
-  connect: connect,
-}
+};
+
+insight = connect();
 
+module.exports = {
+  build,
+  send,
+  connect
+};
diff --git a/package.json b/package.json
index ba435c8..ea953b3 100644
--- a/package.json
+++ b/package.json
@@ -19,11 +19,10 @@
   "unpkg": "dist/datapay.min.js",
   "dependencies": {
     "bitcore-explorers": "^1.0.1",
-    "buffer": "^5.2.1",
-    "mingo": "^2.2.4"
+    "buffer": "^5.2.1"
   },
   "peerDependencies": {
-    "bsv": "0.27.1"
+    "bsv": "git://github.com/Breavyn/bsv.git#tx-size"
   },
   "files": [
     "dist"

From c1dff93aea2283d9830a03a7c85da354b3df3322 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Mon, 12 Aug 2019 06:59:49 +1000
Subject: [PATCH 03/20] Remove dependency on bitcore-explorers.

---
 index.js     | 37 +++++++++++++++++++++----------------
 package.json |  6 +++---
 2 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/index.js b/index.js
index df7b521..fe5f61e 100644
--- a/index.js
+++ b/index.js
@@ -1,34 +1,39 @@
 require("buffer");
+const fetch = require("node-fetch");
 const bsv = require("bsv");
-const { Insight } = require("bitcore-explorers");
 
 const defaults = {
-  rpc: "https://api.bitindex.network",
   feeb: 1.0
 };
 
 let insight;
 
-const connect = (endpoint, network = "livenet") => {
-  insight = new Insight(endpoint || defaults.rpc, network);
+const connect = (url = "https://api.bitindex.network/api/v3/main", headers) => {
+  insight = { url, headers };
 };
 
-const getUTXOs = address =>
-  new Promise((resolve, reject) => {
-    insight.getUnspentUtxos(address, (err, res) => {
-      if (err) reject(err);
-      else resolve(res);
-    });
+const getUTXOs = async address => {
+  const res = await fetch(`${insight.url}/addrs/utxo`, {
+    method: "POST",
+    body: JSON.stringify({ addrs: address.toString() }),
+    headers: { "Content-Type": "application/json", ...insight.headers }
   });
 
-const broadcast = rawtx =>
-  new Promise((resolve, reject) => {
-    insight.broadcast(rawtx, (err, txid) => {
-      if (err) reject(err);
-      else resolve(txid);
-    });
+  if (res.ok) return await res.json();
+  throw `${res.status} ${res.statusText}`;
+};
+
+const broadcast = async rawtx => {
+  const res = await fetch(`${insight.url}/tx/send`, {
+    method: "POST",
+    body: JSON.stringify({ rawtx }),
+    headers: { "Content-Type": "application/json", ...insight.headers }
   });
 
+  if (res.ok) return await res.json();
+  throw `${res.status} ${res.statusText}`;
+};
+
 const build = async ({ data, safe, pay }) => {
   const tx = new bsv.Transaction();
 
diff --git a/package.json b/package.json
index ea953b3..7429326 100644
--- a/package.json
+++ b/package.json
@@ -18,11 +18,11 @@
   "license": "MIT",
   "unpkg": "dist/datapay.min.js",
   "dependencies": {
-    "bitcore-explorers": "^1.0.1",
-    "buffer": "^5.2.1"
+    "buffer": "^5.2.1",
+    "node-fetch": "^2.6.0"
   },
   "peerDependencies": {
-    "bsv": "git://github.com/Breavyn/bsv.git#tx-size"
+    "bsv": "git+https://github.com/Breavyn/bsv.git#tx-size"
   },
   "files": [
     "dist"

From c67268e6472d7523584e8ebb344d94fa17a63284 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Tue, 13 Aug 2019 06:53:58 +1000
Subject: [PATCH 04/20] Support promises and callbacks.

---
 index.js | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/index.js b/index.js
index fe5f61e..7d48bb5 100644
--- a/index.js
+++ b/index.js
@@ -64,8 +64,8 @@ const build = async ({ data, safe, pay }) => {
   return tx;
 };
 
-const send = async (options, tx) => {
-  if (options && !tx) tx = await build(options);
+const send = async options => {
+  const tx = options.tx || (await build(options));
   return await broadcast(tx.serialize());
 };
 
@@ -98,10 +98,23 @@ const createDataScript = (data, safe) => {
   return s;
 };
 
-insight = connect();
+const callbackWrapper = func => {
+  return async (options, callback) => {
+    try {
+      result = await func(options);
+      if (callback) callback(null, result);
+      else return result;
+    } catch (err) {
+      if (callback) callback(err);
+      else throw err;
+    }
+  };
+};
+
+connect();
 
 module.exports = {
-  build,
-  send,
+  build: callbackWrapper(build),
+  send: callbackWrapper(send),
   connect
 };

From b6786aedf7d2736343acfdcf569b572caf955aac Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Thu, 15 Aug 2019 21:01:44 +1000
Subject: [PATCH 05/20] Check for data before trying to create script.

---
 index.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/index.js b/index.js
index 7d48bb5..8177712 100644
--- a/index.js
+++ b/index.js
@@ -37,8 +37,8 @@ const broadcast = async rawtx => {
 const build = async ({ data, safe, pay }) => {
   const tx = new bsv.Transaction();
 
-  const script = createDataScript(data, safe);
-  if (script) {
+  if (data.length) {
+    const script = createDataScript(data, safe);
     tx.addOutput(new bsv.Transaction.Output({ script, satoshis: 0 }));
   }
 
@@ -70,7 +70,6 @@ const send = async options => {
 };
 
 const createDataScript = (data, safe) => {
-  if (!data) return;
   if (typeof data === "string") return bsv.Script.fromHex(data);
 
   const s = new bsv.Script();

From 3ab66e5eeff893ca5cc2b992a884d7fe862ad86e Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Wed, 4 Sep 2019 10:23:56 +1000
Subject: [PATCH 06/20] Switch node-fetch to axios for isomorphic requests.

---
 index.js          |  34 ++-
 package-lock.json | 565 ++++++++++++++--------------------------------
 package.json      |   8 +-
 3 files changed, 181 insertions(+), 426 deletions(-)

diff --git a/index.js b/index.js
index 8177712..9359a47 100644
--- a/index.js
+++ b/index.js
@@ -1,11 +1,7 @@
-require("buffer");
-const fetch = require("node-fetch");
+const axios = require("axios");
 const bsv = require("bsv");
 
-const defaults = {
-  feeb: 1.0
-};
-
+const defaults = { feeb: 1.0 };
 let insight;
 
 const connect = (url = "https://api.bitindex.network/api/v3/main", headers) => {
@@ -13,25 +9,23 @@ const connect = (url = "https://api.bitindex.network/api/v3/main", headers) => {
 };
 
 const getUTXOs = async address => {
-  const res = await fetch(`${insight.url}/addrs/utxo`, {
-    method: "POST",
-    body: JSON.stringify({ addrs: address.toString() }),
-    headers: { "Content-Type": "application/json", ...insight.headers }
-  });
+  const res = await axios.post(
+    `${insight.url}/addrs/utxo`,
+    { addrs: address.toString() },
+    { headers: { ...insight.headers } }
+  );
 
-  if (res.ok) return await res.json();
-  throw `${res.status} ${res.statusText}`;
+  return res.data;
 };
 
 const broadcast = async rawtx => {
-  const res = await fetch(`${insight.url}/tx/send`, {
-    method: "POST",
-    body: JSON.stringify({ rawtx }),
-    headers: { "Content-Type": "application/json", ...insight.headers }
-  });
+  const res = await axios.post(
+    `${insight.url}/tx/send`,
+    { rawtx },
+    { headers: { ...insight.headers } }
+  );
 
-  if (res.ok) return await res.json();
-  throw `${res.status} ${res.statusText}`;
+  return res.data;
 };
 
 const build = async ({ data, safe, pay }) => {
diff --git a/package-lock.json b/package-lock.json
index 095478e..4dd7478 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,142 +1,53 @@
 {
   "name": "datapay",
-  "version": "0.0.15",
+  "version": "0.0.18",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "ajv": {
-      "version": "6.6.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.6.2.tgz",
-      "integrity": "sha512-FBHEW6Jf5TB9MGBgUUA9XHkTbjXYfAUjY43ACMfmdMRHniyoMHjHjzD50OK8LGDWQwp4rWEsIq5kEqq7rvIM1g==",
+    "aes-js": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.1.2.tgz",
+      "integrity": "sha512-e5pEa2kBnBOgR4Y/p20pskXI74UEz7de8ZGVo58asOtvSVG5YAbJeELPZxOmt+Bnz3rX753YKhfIn4X4l1PPRQ=="
+    },
+    "axios": {
+      "version": "0.19.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
+      "integrity": "sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==",
       "requires": {
-        "fast-deep-equal": "^2.0.1",
-        "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.4.1",
-        "uri-js": "^4.2.2"
-      }
-    },
-    "asn1": {
-      "version": "0.2.4",
-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
-      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
-      "requires": {
-        "safer-buffer": "~2.1.0"
+        "follow-redirects": "1.5.10",
+        "is-buffer": "^2.0.2"
+      },
+      "dependencies": {
+        "is-buffer": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.3.tgz",
+          "integrity": "sha512-U15Q7MXTuZlrbymiz95PJpZxu8IlipAp4dtS3wOdgPXx3mqBnslrWU14kxfHB+Py/+2PVKSr37dMAgM2A4uArw=="
+        }
       }
     },
-    "assert-plus": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
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+      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-2.0.4.tgz",
+      "integrity": "sha512-h5PpgXkWitc38BBMYawTYMWJHFZJVnBquFE57xFpjB8pJFiF6gZ+bU+WyI/yqXiFR5mdLsgYNaPe8uao6Uv9Og==",
       "requires": {
-        "assert-plus": "1.0.0",
-        "extsprintf": "1.3.0",
-        "json-schema": "0.2.3",
-        "verror": "1.10.0"
+        "isobject": "^3.0.1"
       }
     },
-    "mime-db": {
-      "version": "1.37.0",
-      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.37.0.tgz",
-      "integrity": "sha512-R3C4db6bgQhlIhPU48fUtdVmKnflq+hRdad7IyKhtFj06VPNVdk2RhiYL3UjQIlso8L+YxAtFkobT0VK+S/ybg=="
+    "isobject": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+      "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
     },
-    "mime-types": {
-      "version": "2.1.21",
-      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.21.tgz",
-      "integrity": "sha512-3iL6DbwpyLzjR3xHSFNFeb9Nz/M8WDkX33t1GFQnFOllWk8pOrh/LSrB5OXlnlW5P9LH73X6loW/eogc+F5lJg==",
-      "requires": {
-        "mime-db": "~1.37.0"
-      }
+    "kind-of": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+      "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA=="
     },
-    "mingo": {
-      "version": "2.2.8",
-      "resolved": "https://registry.npmjs.org/mingo/-/mingo-2.2.8.tgz",
-      "integrity": "sha512-61ET/PK45Jm1yWfoiYL/9KBs/+66s4ctLJeMCnKgYJlrD46oqbIVnfm5RbDyqo9Gl19mzUUi4DDvTlMzirzKVw=="
+    "minimalistic-assert": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
+    },
+    "minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo="
     },
     "minimatch": {
       "version": "3.0.4",
@@ -480,13 +356,7 @@
     "ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
-      "dev": true
-    },
-    "oauth-sign": {
-      "version": "0.9.0",
-      "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.9.0.tgz",
-      "integrity": "sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ=="
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
     },
     "once": {
       "version": "1.4.0",
@@ -503,62 +373,18 @@
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
       "dev": true
     },
-    "performance-now": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
-      "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
-    },
-    "psl": {
-      "version": "1.1.31",
-      "resolved": "https://registry.npmjs.org/psl/-/psl-1.1.31.tgz",
-      "integrity": "sha512-/6pt4+C+T+wZUieKR620OpzN/LlnNKuWjy1iFLQ/UG35JqHlR/89MP1d96dUfkf6Dne3TuLQzOYEYshJ+Hx8mw=="
-    },
-    "punycode": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
-    },
-    "qs": {
-      "version": "6.5.2",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
-      "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
-    },
-    "request": {
-      "version": "2.88.0",
-      "resolved": "https://registry.npmjs.org/request/-/request-2.88.0.tgz",
-      "integrity": "sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==",
-      "requires": {
-        "aws-sign2": "~0.7.0",
-        "aws4": "^1.8.0",
-        "caseless": "~0.12.0",
-        "combined-stream": "~1.0.6",
-        "extend": "~3.0.2",
-        "forever-agent": "~0.6.1",
-        "form-data": "~2.3.2",
-        "har-validator": "~5.1.0",
-        "http-signature": "~1.2.0",
-        "is-typedarray": "~1.0.0",
-        "isstream": "~0.1.2",
-        "json-stringify-safe": "~5.0.1",
-        "mime-types": "~2.1.19",
-        "oauth-sign": "~0.9.0",
-        "performance-now": "^2.1.0",
-        "qs": "~6.5.2",
-        "safe-buffer": "^5.1.2",
-        "tough-cookie": "~2.4.3",
-        "tunnel-agent": "^0.6.0",
-        "uuid": "^3.3.2"
-      }
-    },
     "safe-buffer": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
+      "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
     },
-    "safer-buffer": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
-      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    "shallow-clone": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/shallow-clone/-/shallow-clone-3.0.1.tgz",
+      "integrity": "sha512-/6KqX+GVUdqPuPPd2LxDDxzX6CAbjJehAAOKlNpqqUpAqPM6HeL8f+o3a+JsyGjn2lv0WY8UsTgUJjU9Ok55NA==",
+      "requires": {
+        "kind-of": "^6.0.2"
+      }
     },
     "source-map": {
       "version": "0.6.1",
@@ -566,22 +392,6 @@
       "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
       "dev": true
     },
-    "sshpk": {
-      "version": "1.16.0",
-      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.0.tgz",
-      "integrity": "sha512-Zhev35/y7hRMcID/upReIvRse+I9SVhyVre/KTJSJQWMz3C3+G+HpO7m1wK/yckEtujKZ7dS4hkVxAnmHaIGVQ==",
-      "requires": {
-        "asn1": "~0.2.3",
-        "assert-plus": "^1.0.0",
-        "bcrypt-pbkdf": "^1.0.0",
-        "dashdash": "^1.12.0",
-        "ecc-jsbn": "~0.1.1",
-        "getpass": "^0.1.1",
-        "jsbn": "~0.1.0",
-        "safer-buffer": "^2.0.2",
-        "tweetnacl": "~0.14.0"
-      }
-    },
     "supports-color": {
       "version": "5.4.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.4.0.tgz",
@@ -591,35 +401,6 @@
         "has-flag": "^3.0.0"
       }
     },
-    "tough-cookie": {
-      "version": "2.4.3",
-      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
-      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
-      "requires": {
-        "psl": "^1.1.24",
-        "punycode": "^1.4.1"
-      },
-      "dependencies": {
-        "punycode": {
-          "version": "1.4.1",
-          "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
-          "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
-        }
-      }
-    },
-    "tunnel-agent": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
-      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
-      "requires": {
-        "safe-buffer": "^5.0.1"
-      }
-    },
-    "tweetnacl": {
-      "version": "0.14.5",
-      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
-      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
-    },
     "uglify-es": {
       "version": "3.3.9",
       "resolved": "https://registry.npmjs.org/uglify-es/-/uglify-es-3.3.9.tgz",
@@ -638,28 +419,10 @@
         }
       }
     },
-    "uri-js": {
-      "version": "4.2.2",
-      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
-      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
-      "requires": {
-        "punycode": "^2.1.0"
-      }
-    },
-    "uuid": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
-      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
-    },
-    "verror": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
-      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
-      "requires": {
-        "assert-plus": "^1.0.0",
-        "core-util-is": "1.0.2",
-        "extsprintf": "^1.2.0"
-      }
+    "unorm": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/unorm/-/unorm-1.4.1.tgz",
+      "integrity": "sha1-NkIA1fE2RsqLzURJAnEzVhR5IwA="
     },
     "wrappy": {
       "version": "1.0.2",
diff --git a/package.json b/package.json
index 7429326..414af37 100644
--- a/package.json
+++ b/package.json
@@ -18,11 +18,9 @@
   "license": "MIT",
   "unpkg": "dist/datapay.min.js",
   "dependencies": {
-    "buffer": "^5.2.1",
-    "node-fetch": "^2.6.0"
-  },
-  "peerDependencies": {
-    "bsv": "git+https://github.com/Breavyn/bsv.git#tx-size"
+    "axios": "^0.19.0",
+    "bsv": "^0.30.0",
+    "buffer": "^5.2.1"
   },
   "files": [
     "dist"

From ced37d2fdb55834a40738d3a984b56bc475126ff Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Wed, 4 Sep 2019 11:37:08 +1000
Subject: [PATCH 07/20] Removed buffer dependency. Browserify takes care of
 this.

---
 package-lock.json | 19 -------------------
 package.json      |  3 +--
 2 files changed, 1 insertion(+), 21 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 4dd7478..572e195 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,11 +39,6 @@
         "safe-buffer": "^5.0.1"
       }
     },
-    "base64-js": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
-      "integrity": "sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw=="
-    },
     "bn.js": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
@@ -101,15 +96,6 @@
         }
       }
     },
-    "buffer": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
-      "integrity": "sha512-c+Ko0loDaFfuPWiL02ls9Xd3GO3cPVmUobQ6t3rXNUk304u6hGq+8N/kFi+QEIKhzK3uwolVhLzszmfLmMLnqg==",
-      "requires": {
-        "base64-js": "^1.0.2",
-        "ieee754": "^1.1.4"
-      }
-    },
     "buffer-compare": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/buffer-compare/-/buffer-compare-1.1.1.tgz",
@@ -251,11 +237,6 @@
         "minimalistic-crypto-utils": "^1.0.1"
       }
     },
-    "ieee754": {
-      "version": "1.1.12",
-      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.12.tgz",
-      "integrity": "sha512-GguP+DRY+pJ3soyIiGPTvdiVXjZ+DbXOxGpXn3eMvNW4x4irjqXm4wHKscC+TfxSJ0yw/S1F24tqdMNsMZTiLA=="
-    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
diff --git a/package.json b/package.json
index 414af37..8756e0c 100644
--- a/package.json
+++ b/package.json
@@ -19,8 +19,7 @@
   "unpkg": "dist/datapay.min.js",
   "dependencies": {
     "axios": "^0.19.0",
-    "bsv": "^0.30.0",
-    "buffer": "^5.2.1"
+    "bsv": "^0.30.0"
   },
   "files": [
     "dist"

From 1760d90e2f66b333a4eddc898981f0af156bb425 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Wed, 11 Sep 2019 07:02:55 +1000
Subject: [PATCH 08/20] Simplified axios usage by creating an instance.

Instance parameters can be passed in via the connect method.
---
 index.js | 22 ++++++----------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/index.js b/index.js
index 9359a47..2795073 100644
--- a/index.js
+++ b/index.js
@@ -4,34 +4,24 @@ const bsv = require("bsv");
 const defaults = { feeb: 1.0 };
 let insight;
 
-const connect = (url = "https://api.bitindex.network/api/v3/main", headers) => {
-  insight = { url, headers };
+const connect = options => {
+  insight = axios.create(options);
 };
 
 const getUTXOs = async address => {
-  const res = await axios.post(
-    `${insight.url}/addrs/utxo`,
-    { addrs: address.toString() },
-    { headers: { ...insight.headers } }
-  );
-
+  const res = await insight.post("/addrs/utxo", { addrs: address.toString() });
   return res.data;
 };
 
 const broadcast = async rawtx => {
-  const res = await axios.post(
-    `${insight.url}/tx/send`,
-    { rawtx },
-    { headers: { ...insight.headers } }
-  );
-
+  const res = await insight.post("/tx/send", { rawtx });
   return res.data;
 };
 
 const build = async ({ data, safe, pay }) => {
   const tx = new bsv.Transaction();
 
-  if (data.length) {
+  if (data && data.length) {
     const script = createDataScript(data, safe);
     tx.addOutput(new bsv.Transaction.Output({ script, satoshis: 0 }));
   }
@@ -104,7 +94,7 @@ const callbackWrapper = func => {
   };
 };
 
-connect();
+connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
 
 module.exports = {
   build: callbackWrapper(build),

From ad4d48058ce3b232604ea0d51199c82924ca27ec Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Wed, 11 Sep 2019 07:27:53 +1000
Subject: [PATCH 09/20] Added documentation about how to use this fork.

---
 README.md | 91 ++++++++++++++++++++++++++++++++++++++++++++-----------
 index.js  |  2 +-
 2 files changed, 75 insertions(+), 18 deletions(-)

diff --git a/README.md b/README.md
index 1d3a826..e937e19 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,70 @@
+# About This Fork
+
+This fork contains several changes from unwriter's original version.
+
+## 1. Axios insight implementation
+
+The `connect` method can now be used to create an axios instance which will be
+used for retrieving utxo's and broadcasting raw transactions.
+
+This is an example of using BitIndex's testnet endpoint, with an api key.
+
+```
+datapay.connect({
+  baseURL: "https://api.bitindex.network/api/v3/test",
+  headers: { api_key: "myapikey" }
+});
+```
+
+## 2. Promises
+
+Both build and send now return promises which can be used with async/await.
+
+```
+const tx = await datapay.build({
+  data: ["using promises with datapay"],
+  safe: true,
+  pay: {
+    key: "<your privatekey>"
+  }
+});
+
+const txid = await datapay.send({ tx });
+```
+
+## 3. Fees
+
+This fork is using bsv 0.30.0 which has a fixed implementation of fee
+estimation. The default fee is set to 1 sat/byte. This means the fee paid should
+be exact, or only a sat or two over exact.
+
+## 4. Filtering
+
+The mingo filtering has been removed in favour of using a plain javascript
+function.
+
+```
+const tx = await datapay.build({
+  data: ["using promises with datapay"],
+  safe: true,
+  pay: {
+    key: "<your privatekey>",
+    filter: utxos => utxos.filter(utxo => utxo.confirmations > 5)
+  }
+});
+```
+
+# Using This Fork
+
+The api here is still evolving so I recommend using the package-lock file or installing a specific commit.
+
+```
+npm install git+https://github.com/Breavyn/datapay.git#<commit hash>
+
+# e.g.
+npm install git+https://github.com/Breavyn/datapay.git#8fa2715d28ddd16c8efa0c61ec99700fc7674408
+```
+
 # Datapay
 
 Datapay is the simplest library for building and broadcasting data transactions to the **Bitcoin SV blockchain**.
@@ -8,7 +75,7 @@ Datapay is the simplest library for building and broadcasting data transactions
 
 # Preview
 
-Post to the blockchain with just 4 lines of code. 
+Post to the blockchain with just 4 lines of code.
 
 ![code](code.png)
 
@@ -32,7 +99,6 @@ Post to both Memo.cash and Blockpress with a single interface.
 
 ---
 
-
 # Install
 
 ## 1. In node.js
@@ -62,7 +128,6 @@ const datapay = require('datapay')
 
 Send `"Hello from datapay"` to [memo.cash](https://memo.cash) in 5 lines of code.
 
-
 ```
 const privateKey = [YOUR PRIVATE KEY HERE];
 datapay.send({
@@ -163,21 +228,18 @@ The first argument--a declarative JSON object--can contain the following attribu
 - `pay`: For describing everything related to actually sending money
 - `tx`: For importing previously "built" transactions
 
-
 ### A. data
 
 The `data` attribute is used to construct human readable/processable data to post to the blockchain.
 
-
 #### 1. Buid from push data array
 
-
 ```
 const tx = {
   safe: true,
   data: ["0x6d02", "hello world"]
 }
-datapay.build(tx, function(err, tx) {  
+datapay.build(tx, function(err, tx) {
   /**
   * res contains the generated transaction object, powered by bsv
   * You can check it out at https://github.com/moneybutton/bsv/blob/master/lib/transaction/transaction.js
@@ -194,7 +256,7 @@ datapay.build(tx, function(err, tx) {
 2. a hex string
 3. Binary data ([Buffer](https://nodejs.org/api/buffer.html) in node.js, and [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) in browser)
 
-**To use hex string, simply prefix the string with "0x"**. 
+**To use hex string, simply prefix the string with "0x"**.
 
 **To use Buffer types, just pass the Buffer (or ArrayBuffer) object as push data.**
 
@@ -202,7 +264,6 @@ datapay.build(tx, function(err, tx) {
 
 In above example, we can see that the first item is `"0x6d02"`. Datapay will automatically recognize this as a hex string and interpret as a hex string (while discarding the 0x prefix before the interpretation)
 
-
 #### 2. Build from Binary Data + String
 
 In Node.js (Buffer)
@@ -212,7 +273,7 @@ const tx = {
   safe: true,
   data: ["0x6d02", Buffer.from("Abc"), "hello world"]
 }
-datapay.build(tx, function(err, tx) {  
+datapay.build(tx, function(err, tx) {
   /**
   * res contains the generated transaction object, powered by bsv
   * You can check it out at https://github.com/moneybutton/bsv/blob/master/lib/transaction/transaction.js
@@ -296,10 +357,9 @@ datapay.build(tx, function(err, tx) {
 })
 ```
 
-
 #### 2. `rpc`
 
-The `rpc` attribute is used to manually set the JSON-RPC endpoint you wish to broadcast through. 
+The `rpc` attribute is used to manually set the JSON-RPC endpoint you wish to broadcast through.
 
 - default: `https://api.bitindex.network`
 
@@ -410,7 +470,6 @@ But sometimes you want more fine-grained control over which UTXOs to use for a t
 
 For this feature, datapay uses [Bitquery](https://docs.bitdb.network/docs/query_v3) as a filter to describe the UTXOs to filter out.
 
-
 ```
 const tx = {
   safe: true,
@@ -470,7 +529,6 @@ datapay.build({
 
 Notice how in addition to the `tx` attribute we've added the `pay.key` attribute. This will import the unsigned transaction and sign it.
 
-
 #### 3. Importing and sending a signed transaction from exported hex string
 
 If you already have a signed transaction object, you can simply send it away without any additional steps.
@@ -533,7 +591,6 @@ datapay.send({
 
 This time since the exported transaction is already signed, no need for additional `pay.key` attriute when sending later
 
-
 ```
 // Build and export an unsigned transaction for later usage
 var exportedSignedTxHex = "";
@@ -598,7 +655,7 @@ datapay.connect().getUnspentUtxos("14xMz8rKm4L83RuZdmsHXD2jvENZbv72vR", function
   if (err) {
     console.log("Error: ", err)
   } else {
-    console.log(utxos) 
+    console.log(utxos)
   }
 })
 ```
@@ -610,7 +667,7 @@ datapay.connect('https://api.bitindex.network').getUnspentUtxos("14xMz8rKm4L83Ru
   if (err) {
     console.log("Error: ", err)
   } else {
-    console.log(utxos) 
+    console.log(utxos)
   }
 });
 ```
diff --git a/index.js b/index.js
index 2795073..c961267 100644
--- a/index.js
+++ b/index.js
@@ -39,7 +39,7 @@ const build = async ({ data, safe, pay }) => {
     tx.change(address);
 
     let utxos = await getUTXOs(address);
-    if (filter) utxos = utxos.filter(filter);
+    if (filter) utxos = filter(utxos);
     tx.from(utxos);
 
     tx.sign(privateKey);

From 5eb918bd948e40e5bd8fe112c60dd30acc7b00af Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Thu, 12 Sep 2019 18:07:50 +1000
Subject: [PATCH 10/20] Wrap insight errors with some meaning.

---
 index.js | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/index.js b/index.js
index c961267..4ba126c 100644
--- a/index.js
+++ b/index.js
@@ -9,13 +9,23 @@ const connect = options => {
 };
 
 const getUTXOs = async address => {
-  const res = await insight.post("/addrs/utxo", { addrs: address.toString() });
-  return res.data;
+  try {
+    const res = await insight.post("/addrs/utxo", {
+      addrs: address.toString()
+    });
+    return res.data;
+  } catch (err) {
+    throw new Error(`Failed to retrieve utxo's for ${address}: ${err.message}`);
+  }
 };
 
 const broadcast = async rawtx => {
-  const res = await insight.post("/tx/send", { rawtx });
-  return res.data;
+  try {
+    const res = await insight.post("/tx/send", { rawtx });
+    return res.data;
+  } catch (err) {
+    throw new Error(`Failed to broadcast transaction: ${err.message}`);
+  }
 };
 
 const build = async ({ data, safe, pay }) => {

From 17ad2f30d5ee6c2a83de1395019fb26d8e986424 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Sat, 14 Sep 2019 22:44:25 +1000
Subject: [PATCH 11/20] Expose methods for retrieving utxo's and broadcasting
 transactions.

---
 index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.js b/index.js
index 4ba126c..98c57b3 100644
--- a/index.js
+++ b/index.js
@@ -107,6 +107,8 @@ const callbackWrapper = func => {
 connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
 
 module.exports = {
+  getUTXOs,
+  broadcast,
   build: callbackWrapper(build),
   send: callbackWrapper(send),
   connect

From 6d1df7b879ffc9bd5ac563014f3b12c52cc074ad Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Mon, 16 Sep 2019 22:32:23 +1000
Subject: [PATCH 12/20] Make bsv a peer dependency again.

---
 package-lock.json | 205 ++++------------------------------------------
 package.json      |   4 +-
 2 files changed, 21 insertions(+), 188 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 572e195..2bebaaf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,11 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "aes-js": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.1.2.tgz",
-      "integrity": "sha512-e5pEa2kBnBOgR4Y/p20pskXI74UEz7de8ZGVo58asOtvSVG5YAbJeELPZxOmt+Bnz3rX753YKhfIn4X4l1PPRQ=="
-    },
     "axios": {
       "version": "0.19.0",
       "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
@@ -16,13 +11,6 @@
       "requires": {
         "follow-redirects": "1.5.10",
         "is-buffer": "^2.0.2"
-      },
-      "dependencies": {
-        "is-buffer": {
-          "version": "2.0.3",
-          "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.3.tgz",
-          "integrity": "sha512-U15Q7MXTuZlrbymiz95PJpZxu8IlipAp4dtS3wOdgPXx3mqBnslrWU14kxfHB+Py/+2PVKSr37dMAgM2A4uArw=="
-        }
       }
     },
     "balanced-match": {
@@ -31,19 +19,6 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
-    "base-x": {
-      "version": "3.0.6",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.6.tgz",
-      "integrity": "sha512-4PaF8u2+AlViJxRVjurkLTxpp7CaFRD/jo5rPT9ONnKxyhQ8f59yzamEvq7EkriG56yn5On4ONyaG75HLqr46w==",
-      "requires": {
-        "safe-buffer": "^5.0.1"
-      }
-    },
-    "bn.js": {
-      "version": "4.11.8",
-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
-      "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA=="
-    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -54,63 +29,12 @@
         "concat-map": "0.0.1"
       }
     },
-    "brorand": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
-      "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8="
-    },
     "browser-stdout": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
       "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
       "dev": true
     },
-    "bs58": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/bs58/-/bs58-4.0.1.tgz",
-      "integrity": "sha1-vhYedsNU9veIrkBx9j806MTwpCo=",
-      "requires": {
-        "base-x": "^3.0.2"
-      }
-    },
-    "bsv": {
-      "version": "0.30.0",
-      "resolved": "https://registry.npmjs.org/bsv/-/bsv-0.30.0.tgz",
-      "integrity": "sha512-8TiRw8RSTX+SZ+karPipBIn5TC2/mWPULBTapzuPu1+hHSRw/d6FzZTjlPyp/LPqytlCHqchWLRSSTUYl0Evbg==",
-      "requires": {
-        "aes-js": "^3.1.2",
-        "bn.js": "=4.11.8",
-        "bs58": "=4.0.1",
-        "buffer-compare": "=1.1.1",
-        "clone-deep": "^4.0.1",
-        "elliptic": "6.4.1",
-        "hash.js": "^1.1.7",
-        "inherits": "2.0.3",
-        "unorm": "1.4.1"
-      },
-      "dependencies": {
-        "inherits": {
-          "version": "2.0.3",
-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
-        }
-      }
-    },
-    "buffer-compare": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/buffer-compare/-/buffer-compare-1.1.1.tgz",
-      "integrity": "sha1-W+e+hTr4kZjR9N3AkNHWakiu9ZY="
-    },
-    "clone-deep": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/clone-deep/-/clone-deep-4.0.1.tgz",
-      "integrity": "sha512-neHB9xuzh/wk0dIHweyAXv2aPGZIVk3pLMe+/RNzINf17fe0OG96QroktYAUm7SM1PBnzTabaLboqqxDyMU+SQ==",
-      "requires": {
-        "is-plain-object": "^2.0.4",
-        "kind-of": "^6.0.2",
-        "shallow-clone": "^3.0.0"
-      }
-    },
     "commander": {
       "version": "2.15.1",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
@@ -123,6 +47,14 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
       "dev": true
     },
+    "debug": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+      "requires": {
+        "ms": "2.0.0"
+      }
+    },
     "diff": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
@@ -135,20 +67,6 @@
       "integrity": "sha512-HygQCKUBSFl8wKQZBSemMywRWcEDNidvNbjGVyZu3nbZ8qq9ubiPoGLMdRDpfSrpkkm9BXYFkpKxxFX38o/76w==",
       "dev": true
     },
-    "elliptic": {
-      "version": "6.4.1",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-      "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
-      "requires": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
-        "hash.js": "^1.0.0",
-        "hmac-drbg": "^1.0.0",
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.0"
-      }
-    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -161,16 +79,6 @@
       "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
       "requires": {
         "debug": "=3.1.0"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        }
       }
     },
     "fs.realpath": {
@@ -205,38 +113,12 @@
       "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
       "dev": true
     },
-    "hash.js": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
-      "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
-      "requires": {
-        "inherits": "^2.0.3",
-        "minimalistic-assert": "^1.0.1"
-      },
-      "dependencies": {
-        "inherits": {
-          "version": "2.0.4",
-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
-          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
-        }
-      }
-    },
     "he": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/he/-/he-1.1.1.tgz",
       "integrity": "sha1-k0EP0hsAlzUVH4howvJx80J+I/0=",
       "dev": true
     },
-    "hmac-drbg": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
-      "integrity": "sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=",
-      "requires": {
-        "hash.js": "^1.0.3",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.1"
-      }
-    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
@@ -248,37 +130,15 @@
       }
     },
     "inherits": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.1.tgz",
-      "integrity": "sha1-sX0I0ya0Qj5Wjv9xn5GwscvfafE="
-    },
-    "is-plain-object": {
       "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-2.0.4.tgz",
-      "integrity": "sha512-h5PpgXkWitc38BBMYawTYMWJHFZJVnBquFE57xFpjB8pJFiF6gZ+bU+WyI/yqXiFR5mdLsgYNaPe8uao6Uv9Og==",
-      "requires": {
-        "isobject": "^3.0.1"
-      }
-    },
-    "isobject": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-      "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
-    },
-    "kind-of": {
-      "version": "6.0.2",
-      "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
-      "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA=="
-    },
-    "minimalistic-assert": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
-      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "dev": true
     },
-    "minimalistic-crypto-utils": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
-      "integrity": "sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo="
+    "is-buffer": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.3.tgz",
+      "integrity": "sha512-U15Q7MXTuZlrbymiz95PJpZxu8IlipAp4dtS3wOdgPXx3mqBnslrWU14kxfHB+Py/+2PVKSr37dMAgM2A4uArw=="
     },
     "minimatch": {
       "version": "3.0.4",
@@ -291,13 +151,13 @@
     },
     "minimist": {
       "version": "0.0.8",
-      "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
       "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
       "dev": true
     },
     "mkdirp": {
       "version": "0.5.1",
-      "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
       "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
       "dev": true,
       "requires": {
@@ -321,17 +181,6 @@
         "minimatch": "3.0.4",
         "mkdirp": "0.5.1",
         "supports-color": "5.4.0"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-          "dev": true,
-          "requires": {
-            "ms": "2.0.0"
-          }
-        }
       }
     },
     "ms": {
@@ -350,23 +199,10 @@
     },
     "path-is-absolute": {
       "version": "1.0.1",
-      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
       "dev": true
     },
-    "safe-buffer": {
-      "version": "5.2.0",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
-      "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
-    },
-    "shallow-clone": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/shallow-clone/-/shallow-clone-3.0.1.tgz",
-      "integrity": "sha512-/6KqX+GVUdqPuPPd2LxDDxzX6CAbjJehAAOKlNpqqUpAqPM6HeL8f+o3a+JsyGjn2lv0WY8UsTgUJjU9Ok55NA==",
-      "requires": {
-        "kind-of": "^6.0.2"
-      }
-    },
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -400,11 +236,6 @@
         }
       }
     },
-    "unorm": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/unorm/-/unorm-1.4.1.tgz",
-      "integrity": "sha1-NkIA1fE2RsqLzURJAnEzVhR5IwA="
-    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
diff --git a/package.json b/package.json
index 8756e0c..631a801 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,9 @@
   "license": "MIT",
   "unpkg": "dist/datapay.min.js",
   "dependencies": {
-    "axios": "^0.19.0",
+    "axios": "^0.19.0"
+  },
+  "peerDependencies": {
     "bsv": "^0.30.0"
   },
   "files": [

From bcfc6b9210a8e3f7ce554c7ab2a19092d8c86c79 Mon Sep 17 00:00:00 2001
From: Colin Gillespie <colin@breavyn.com>
Date: Tue, 17 Sep 2019 18:56:53 +1000
Subject: [PATCH 13/20] Return broadcasted txid directly.

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 98c57b3..1e91020 100644
--- a/index.js
+++ b/index.js
@@ -22,7 +22,7 @@ const getUTXOs = async address => {
 const broadcast = async rawtx => {
   try {
     const res = await insight.post("/tx/send", { rawtx });
-    return res.data;
+    return res.data ? res.data.txid : null;
   } catch (err) {
     throw new Error(`Failed to broadcast transaction: ${err.message}`);
   }

From c21af7974d058824a101fe9665a7074944a3a3e0 Mon Sep 17 00:00:00 2001
From: Breavyn <colin@breavyn.com>
Date: Wed, 18 Sep 2019 16:06:39 +1000
Subject: [PATCH 14/20] Added unit test coverage (#1)

---
 index.js          |   85 ++--
 package-lock.json | 1141 ++++++++++++++++++++++++++++++++++++++++++++-
 package.json      |    5 +-
 test/test.js      |  915 +++++++++++++-----------------------
 4 files changed, 1477 insertions(+), 669 deletions(-)

diff --git a/index.js b/index.js
index 1e91020..d86c737 100644
--- a/index.js
+++ b/index.js
@@ -1,14 +1,28 @@
 const axios = require("axios");
 const bsv = require("bsv");
 
-const defaults = { feeb: 1.0 };
+const callbackWrapper = func => {
+  return async (options, callback) => {
+    try {
+      result = await func(options);
+      if (callback) callback(null, result);
+      else return result;
+    } catch (err) {
+      if (callback) callback(err);
+      else throw err;
+    }
+  };
+};
+
 let insight;
 
 const connect = options => {
   insight = axios.create(options);
 };
 
-const getUTXOs = async address => {
+connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
+
+module.exports.getUTXOs = async address => {
   try {
     const res = await insight.post("/addrs/utxo", {
       addrs: address.toString()
@@ -19,7 +33,7 @@ const getUTXOs = async address => {
   }
 };
 
-const broadcast = async rawtx => {
+module.exports.broadcast = async rawtx => {
   try {
     const res = await insight.post("/tx/send", { rawtx });
     return res.data ? res.data.txid : null;
@@ -28,42 +42,44 @@ const broadcast = async rawtx => {
   }
 };
 
-const build = async ({ data, safe, pay }) => {
+module.exports.build = callbackWrapper(async ({ data, safe, pay }) => {
   const tx = new bsv.Transaction();
 
   if (data && data.length) {
-    const script = createDataScript(data, safe);
+    const script = module.exports.createDataScript(data, safe);
     tx.addOutput(new bsv.Transaction.Output({ script, satoshis: 0 }));
   }
 
-  const { fee, feeb, key, to = [], filter } = pay;
+  if (pay) {
+    const { fee, feeb = 1.0, key, to = [], filter } = pay;
 
-  if (fee) tx.fee(fee);
-  else tx.feePerKb((feeb || defaults.feeb) * 1000);
+    if (fee) tx.fee(fee);
+    else tx.feePerKb(feeb * 1000);
 
-  to.forEach(receiver => tx.to(receiver.address, receiver.value));
+    to.forEach(receiver => tx.to(receiver.address, receiver.value));
 
-  if (key) {
-    const privateKey = new bsv.PrivateKey(key);
-    const address = privateKey.toAddress();
-    tx.change(address);
+    if (key) {
+      const privateKey = new bsv.PrivateKey(key);
+      const address = privateKey.toAddress();
+      tx.change(address);
 
-    let utxos = await getUTXOs(address);
-    if (filter) utxos = filter(utxos);
-    tx.from(utxos);
+      let utxos = await module.exports.getUTXOs(address);
+      if (filter) utxos = filter(utxos);
+      tx.from(utxos);
 
-    tx.sign(privateKey);
+      tx.sign(privateKey);
+    }
   }
 
   return tx;
-};
+});
 
-const send = async options => {
-  const tx = options.tx || (await build(options));
-  return await broadcast(tx.serialize());
-};
+module.exports.send = callbackWrapper(async options => {
+  const tx = options.tx || (await module.exports.build(options));
+  return await module.exports.broadcast(tx.serialize());
+});
 
-const createDataScript = (data, safe) => {
+module.exports.createDataScript = (data, safe) => {
   if (typeof data === "string") return bsv.Script.fromHex(data);
 
   const s = new bsv.Script();
@@ -90,26 +106,3 @@ const createDataScript = (data, safe) => {
 
   return s;
 };
-
-const callbackWrapper = func => {
-  return async (options, callback) => {
-    try {
-      result = await func(options);
-      if (callback) callback(null, result);
-      else return result;
-    } catch (err) {
-      if (callback) callback(err);
-      else throw err;
-    }
-  };
-};
-
-connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
-
-module.exports = {
-  getUTXOs,
-  broadcast,
-  build: callbackWrapper(build),
-  send: callbackWrapper(send),
-  connect
-};
diff --git a/package-lock.json b/package-lock.json
index 2bebaaf..e0eee7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,84 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@sinonjs/commons": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.6.0.tgz",
+      "integrity": "sha512-w4/WHG7C4WWFyE5geCieFJF6MZkbW4VAriol5KlmQXpAQdxvV0p26sqNZOW6Qyw6Y0l9K4g+cHvvczR2sEEpqg==",
+      "dev": true,
+      "requires": {
+        "type-detect": "4.0.8"
+      }
+    },
+    "@sinonjs/formatio": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.1.tgz",
+      "integrity": "sha512-tsHvOB24rvyvV2+zKMmPkZ7dXX6LSLKZ7aOtXY6Edklp0uRcgGpOsQTTGTcWViFyx4uhWc6GV8QdnALbIbIdeQ==",
+      "dev": true,
+      "requires": {
+        "@sinonjs/commons": "^1",
+        "@sinonjs/samsam": "^3.1.0"
+      }
+    },
+    "@sinonjs/samsam": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.3.3.tgz",
+      "integrity": "sha512-bKCMKZvWIjYD0BLGnNrxVuw4dkWCYsLqFOUWw8VgKF/+5Y+mE7LfHWPIYoDXowH+3a9LsWDMo0uAP8YDosPvHQ==",
+      "dev": true,
+      "requires": {
+        "@sinonjs/commons": "^1.3.0",
+        "array-from": "^2.1.1",
+        "lodash": "^4.17.15"
+      }
+    },
+    "@sinonjs/text-encoding": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz",
+      "integrity": "sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==",
+      "dev": true
+    },
+    "aes-js": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.1.2.tgz",
+      "integrity": "sha512-e5pEa2kBnBOgR4Y/p20pskXI74UEz7de8ZGVo58asOtvSVG5YAbJeELPZxOmt+Bnz3rX753YKhfIn4X4l1PPRQ==",
+      "dev": true
+    },
+    "ansi-colors": {
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.3.tgz",
+      "integrity": "sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==",
+      "dev": true
+    },
+    "ansi-regex": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "dev": true,
+      "requires": {
+        "color-convert": "^1.9.0"
+      }
+    },
+    "argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
+    "array-from": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/array-from/-/array-from-2.1.1.tgz",
+      "integrity": "sha1-z+nYwmYoudxa7MYqn12PHzUsEZU=",
+      "dev": true
+    },
     "axios": {
       "version": "0.19.0",
       "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
@@ -19,6 +97,21 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
+    "base-x": {
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.7.tgz",
+      "integrity": "sha512-zAKJGuQPihXW22fkrfOclUUZXM2g92z5GzlSMHxhO6r6Qj+Nm0ccaGNBzDZojzwOMkpjAv4J0fOv1U4go+a4iw==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "bn.js": {
+      "version": "4.11.8",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
+      "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==",
+      "dev": true
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -29,16 +122,127 @@
         "concat-map": "0.0.1"
       }
     },
+    "brorand": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=",
+      "dev": true
+    },
     "browser-stdout": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
       "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
       "dev": true
     },
-    "commander": {
-      "version": "2.15.1",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
-      "integrity": "sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==",
+    "bs58": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/bs58/-/bs58-4.0.1.tgz",
+      "integrity": "sha1-vhYedsNU9veIrkBx9j806MTwpCo=",
+      "dev": true,
+      "requires": {
+        "base-x": "^3.0.2"
+      }
+    },
+    "bsv": {
+      "version": "0.30.0",
+      "resolved": "https://registry.npmjs.org/bsv/-/bsv-0.30.0.tgz",
+      "integrity": "sha512-8TiRw8RSTX+SZ+karPipBIn5TC2/mWPULBTapzuPu1+hHSRw/d6FzZTjlPyp/LPqytlCHqchWLRSSTUYl0Evbg==",
+      "dev": true,
+      "requires": {
+        "aes-js": "^3.1.2",
+        "bn.js": "=4.11.8",
+        "bs58": "=4.0.1",
+        "buffer-compare": "=1.1.1",
+        "clone-deep": "^4.0.1",
+        "elliptic": "6.4.1",
+        "hash.js": "^1.1.7",
+        "inherits": "2.0.3",
+        "unorm": "1.4.1"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        }
+      }
+    },
+    "buffer-compare": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-compare/-/buffer-compare-1.1.1.tgz",
+      "integrity": "sha1-W+e+hTr4kZjR9N3AkNHWakiu9ZY=",
+      "dev": true
+    },
+    "camelcase": {
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
+      "dev": true
+    },
+    "chalk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      },
+      "dependencies": {
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
+      }
+    },
+    "cliui": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
+      "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
+      "dev": true,
+      "requires": {
+        "string-width": "^2.1.1",
+        "strip-ansi": "^4.0.0",
+        "wrap-ansi": "^2.0.0"
+      }
+    },
+    "clone-deep": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/clone-deep/-/clone-deep-4.0.1.tgz",
+      "integrity": "sha512-neHB9xuzh/wk0dIHweyAXv2aPGZIVk3pLMe+/RNzINf17fe0OG96QroktYAUm7SM1PBnzTabaLboqqxDyMU+SQ==",
+      "dev": true,
+      "requires": {
+        "is-plain-object": "^2.0.4",
+        "kind-of": "^6.0.2",
+        "shallow-clone": "^3.0.0"
+      }
+    },
+    "code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true
+    },
+    "color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dev": true,
+      "requires": {
+        "color-name": "1.1.3"
+      }
+    },
+    "color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
     "concat-map": {
@@ -47,6 +251,19 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
       "dev": true
     },
+    "cross-spawn": {
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
+      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
+      "dev": true,
+      "requires": {
+        "nice-try": "^1.0.4",
+        "path-key": "^2.0.1",
+        "semver": "^5.5.0",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
+      }
+    },
     "debug": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
@@ -55,24 +272,131 @@
         "ms": "2.0.0"
       }
     },
+    "decamelize": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
+      "dev": true
+    },
+    "define-properties": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
+      "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
+      "dev": true,
+      "requires": {
+        "object-keys": "^1.0.12"
+      }
+    },
     "diff": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
       "integrity": "sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==",
       "dev": true
     },
-    "dotenv": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-6.2.0.tgz",
-      "integrity": "sha512-HygQCKUBSFl8wKQZBSemMywRWcEDNidvNbjGVyZu3nbZ8qq9ubiPoGLMdRDpfSrpkkm9BXYFkpKxxFX38o/76w==",
+    "elliptic": {
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
+      "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
+      "dev": true,
+      "requires": {
+        "bn.js": "^4.4.0",
+        "brorand": "^1.0.1",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.0",
+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.0"
+      }
+    },
+    "emoji-regex": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
+      "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
       "dev": true
     },
+    "end-of-stream": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
+      "integrity": "sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==",
+      "dev": true,
+      "requires": {
+        "once": "^1.4.0"
+      }
+    },
+    "es-abstract": {
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.14.2.tgz",
+      "integrity": "sha512-DgoQmbpFNOofkjJtKwr87Ma5EW4Dc8fWhD0R+ndq7Oc456ivUfGOOP6oAZTTKl5/CcNMP+EN+e3/iUzgE0veZg==",
+      "dev": true,
+      "requires": {
+        "es-to-primitive": "^1.2.0",
+        "function-bind": "^1.1.1",
+        "has": "^1.0.3",
+        "has-symbols": "^1.0.0",
+        "is-callable": "^1.1.4",
+        "is-regex": "^1.0.4",
+        "object-inspect": "^1.6.0",
+        "object-keys": "^1.1.1",
+        "string.prototype.trimleft": "^2.0.0",
+        "string.prototype.trimright": "^2.0.0"
+      }
+    },
+    "es-to-primitive": {
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+      "integrity": "sha512-WyEoxgyTD3w5XRpAQNYUB9ycVH/PQrToaTXdYXRdOXvEy1l19br+VJsc0vcO8PTGg5ro/l/GY7F/JMEBmI0BxA==",
+      "dev": true,
+      "requires": {
+        "cliui": "^4.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^2.0.1",
+        "os-locale": "^3.1.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^3.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "13.0.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.0.0.tgz",
+      "integrity": "sha512-w2LXjoL8oRdRQN+hOyppuXs+V/fVAYtpcrRxZuF7Kt/Oc+Jr2uAcVntaUTNT6w5ihoWfFDpNY8CPx1QskxZ/pw==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      },
+      "dependencies": {
+        "get-caller-file": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
+          "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
+          "dev": true
+        },
+        "require-main-filename": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
+          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
+          "dev": true
+        },
+        "yargs": {
+          "version": "12.0.5",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+          "dev": true,
+          "requires": {
+            "cliui": "^4.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^3.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^11.1.1"
+          }
+        },
+        "yargs-parser": {
+          "version": "11.1.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+          "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 631a801..4dbc10e 100644
--- a/package.json
+++ b/package.json
@@ -27,8 +27,9 @@
     "dist"
   ],
   "devDependencies": {
-    "dotenv": "^6.2.0",
-    "mocha": "^5.1.1",
+    "bsv": "^0.30.0",
+    "mocha": "^6.2.0",
+    "sinon": "^7.4.2",
     "uglify-es": "^3.3.9"
   }
 }
diff --git a/test/test.js b/test/test.js
index f1f9460..cf680ad 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,607 +1,330 @@
-require('dotenv').config()
-const assert = require('assert');
-const bitcoin = require('bsv')
-const datapay = require('../index');
-
-// Private Key for Demo Purpose Only
-const privKey = process.env.privKey
-
-var utxoSize;
-describe('datapay', function() {
-  beforeEach(function(done) {
-    const address = new bitcoin.PrivateKey(privKey).toAddress()
-    datapay.connect().getUnspentUtxos(address, function(err, utxos) {
-      if (err) {
-        console.log("Error: ", err)
-      } else {
-        utxoSize = utxos.length
-        done()
-      }
-    })
-  })
-  describe('build', function() {
-    describe('data only', function() {
-      it('opcode', function(done) {
-        const options = {
-          data: [{op: 78}, "hello world"]
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject()
-          let s = new bitcoin.Script(generated.outputs[0].script).toString()
-          assert(s.startsWith("OP_RETURN OP_PUSHDATA4 1818585099"))
-          done()
-        });
-      })
-      it('opcode 2', function(done) {
-        const options = {
-          data: ["0x6d02", "hello world", {op: 78}, "blah blah blah * 10^100"]
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject()
-          let s = new bitcoin.Script(generated.outputs[0].script).toString()
-          assert(s.startsWith("OP_RETURN 2 0x6d02 11 0x68656c6c6f20776f726c64 OP_PUSHDATA4 1634492951"))
-          done()
-        });
-      })
-      it('push data array', function(done) {
-        const options = {
-          data: ["0x6d02", "hello world"]
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject();
-          // no input (since no one has signed yet)
-          assert.equal(generated.inputs.length, 0)
-          // output has one item (only OP_RETURN)
-          assert.equal(generated.outputs.length, 1)
-          // the only existing output is a script
-          assert(generated.outputs[0].script);
-          // uses the default fee of 400
-          assert(generated.fee <= 400)
-
-          done()
-        });
-      })
-      it('hex string that represents script', function(done) {
-        const options = {
-          data: "6a04366430320b68656c6c6f20776f726c64"
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject();
-          // no input (since no one has signed yet)
-          assert.equal(generated.inputs.length, 0)
-          // output has one item (only OP_RETURN)
-          assert.equal(generated.outputs.length, 1)
-          // the only existing output is a script
-          assert(generated.outputs[0].script);
-          // uses the default fee of 400
-          assert(generated.fee <= 400)
-
-          done()
-        });
-      })
-      it('Buffer', function(done) {
-        const options = {
-          data: [Buffer.from("abc"), "hello world"]
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject();
-          // no input (since no one has signed yet)
-          assert.equal(generated.inputs.length, 0)
-          // output has one item (only OP_RETURN)
-          assert.equal(generated.outputs.length, 1)
-          // the only existing output is a script
-          assert(generated.outputs[0].script);
-          // uses the default fee of 400
-          assert(generated.fee <= 400)
-
-          done()
-        });
-      })
-    })
-    describe('pay only', function() {
-      it('to', function(done) {
-        const address = new bitcoin.PrivateKey(privKey).toAddress()
-        const options = {
-          pay: {
-            key: privKey,
-            to: [{ address: address, value: 100 }]
+const assert = require("assert");
+const sinon = require("sinon");
+const bsv = require("bsv");
+const datapay = require("../index");
+
+const sandbox = sinon.createSandbox();
+
+// fake input data
+const toAddress1 = "1DnFt3kHih4jkAbGYsF8wPhoisuM3vkWLN";
+const toAddress2 = "1LTLNv4SCF9pjj73t5ZEt5fYrWWadwfMFB";
+const privateKey = "Ky1WGEzN2Jn6CezPWdYMqTJzcBTJuFaMhna6wBpycg1wzVBUXcHC";
+const privateKeyRedeem = "76a914ee305aa2a75dbeff6f8f960eb1b7b16eb1d3b2df88ac";
+const utxos = [
+  {
+    txid: "8a06f5d5449c0f68291171ad1a7cc427db9bef5abb93998b40c999f5e933eb89",
+    vout: 2,
+    amount: 0.045,
+    script: privateKeyRedeem
+  },
+  {
+    txid: "23cad3adb933c194b57b9d8db22a977b281f7279f040c319a9552c3378a70f5a",
+    vout: 4,
+    satoshis: 10000,
+    scriptPubKey: privateKeyRedeem
+  }
+];
+
+describe("datapay", function() {
+  afterEach(function() {
+    sandbox.restore();
+  });
+
+  describe("#createDataScript()", function() {
+    describe("with a pushdata array", function() {
+      it("should add an opcode", function() {
+        const script = datapay.createDataScript([{ op: 78 }, "hello world"]);
+        assert.equal(
+          script.toASM(),
+          "OP_RETURN OP_PUSHDATA4 68656c6c6f20776f726c64"
+        );
+      });
+
+      it("should add a buffer", function() {
+        const script = datapay.createDataScript([
+          Buffer.from("abc"),
+          "hello world"
+        ]);
+
+        assert.equal(script.toASM(), "OP_RETURN 616263 68656c6c6f20776f726c64");
+      });
+
+      it("should add a utf-8 string", function() {
+        const script = datapay.createDataScript(["hello world"]);
+        assert.equal(script.toASM(), "OP_RETURN 68656c6c6f20776f726c64");
+      });
+
+      it("should add a hex string", function() {
+        const script = datapay.createDataScript(["0x6d02", "hello world"]);
+        assert.equal(script.toASM(), "OP_RETURN 6d02 68656c6c6f20776f726c64");
+      });
+
+      it("should add OP_0 with safe option", function() {
+        const script = datapay.createDataScript(["hello world"], true);
+        assert.equal(script.toASM(), "0 OP_RETURN 68656c6c6f20776f726c64");
+      });
+    });
+
+    it("should build from a hex string", function() {
+      const script = datapay.createDataScript(
+        "6a04366430320b68656c6c6f20776f726c64"
+      );
+
+      assert.equal(script.toASM(), "OP_RETURN 36643032 68656c6c6f20776f726c64");
+    });
+  });
+
+  describe("#build()", function() {
+    describe("with data", function() {
+      it("should add OP_0 with safe option", async function() {
+        const options = { data: ["hello world"], safe: true };
+        const tx = await datapay.build(options);
+        assert.equal(tx.outputs.length, 1);
+        assert.equal(
+          tx.outputs[0].script.toASM(),
+          "0 OP_RETURN 68656c6c6f20776f726c64"
+        );
+      });
+
+      it("should add a data output", async function() {
+        const options = { data: ["hello world"] };
+        const tx = await datapay.build(options);
+        assert.equal(tx.outputs.length, 1);
+        assert.equal(
+          tx.outputs[0].script.toASM(),
+          "OP_RETURN 68656c6c6f20776f726c64"
+        );
+      });
+    });
+
+    describe("with callback", function() {
+      it("should build a transaction", function(done) {
+        sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+
+        const options = { pay: { key: privateKey } };
+        datapay.build(options, (err, tx) => {
+          try {
+            assert(tx, "a transaction was not returned in the callback");
+            done();
+          } catch (err) {
+            done(err);
           }
-        }
-        datapay.build(options, function(err, tx) {
-          // If only 'key' is included, it will use the default values for
-          // rest of the pay attributes
-          // and make a transaction that sends money to oneself
-          // (since no receiver is specified)
-          let generated = tx.toObject();
-          done()
-        })
-      })
-      it('pay.key only', function(done) {
-        const options = {
-          pay: {
-            key: privKey
-          }
-        }
-        datapay.build(options, function(err, tx) {
-          // If only 'key' is included, it will use the default values for
-          // rest of the pay attributes
-          // and make a transaction that sends money to oneself
-          // (since no receiver is specified)
-          let generated = tx.toObject();
-
-          // input length utxoSize => from the user specifiec by the private key
-          assert.equal(generated.inputs.length, utxoSize)
-          // contains a 'changeScript'
-          assert(generated.changeScript)
-
-          // output length 1 => the output points to the sender by default
-          assert.equal(generated.outputs.length, 1)
-          // script is a pubkeyhashout
-          let s = new bitcoin.Script(generated.outputs[0].script)
-          assert(s.isPublicKeyHashOut())
-
-          // script sends the money to the same address as the sender
-          // specified by the private key
-          const address = new bitcoin.PrivateKey(privKey).toAddress()
-          assert.equal(address.toString(), s.toAddress().toString())
-
-          done()
         });
-      })
-      it('pay.fee only', function(done) {
-        const options = {
-          pay: {
-            fee: 100
+      });
+
+      it("should handle getUTXOs error", function(done) {
+        sandbox.stub(datapay, "getUTXOs").rejects();
+
+        const options = { pay: { key: privateKey } };
+        datapay.build(options, (err, tx) => {
+          try {
+            assert(err, "an error was not returned in the callback");
+            done();
+          } catch (err) {
+            done(err);
           }
-        }
-        datapay.build(options, function(err, tx) {
-          // if no key is included,
-          // empty input (since no sender)
-          // empty output (since nothing else is specified)
-          let generated = tx.toObject();
-          assert.equal(generated.inputs.length, 0)
-          assert.equal(generated.outputs.length, 0)
-          assert.equal(generated.fee, 100)
-          done()
-        })
-      })
-      it('pay.key and pay.fee', function(done) {
-        const options = {
-          pay: {
-            key: privKey,
-            fee: 100
-          }
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject();
-          assert.equal(generated.fee, 100)
-          done()
-        })
-      })
-
-      /**
-
-        pay.rpc TBD
-
-      **/
-
-    })
-    describe('data and pay', function() {
-      it('both data and pay', function(done) {
-        const options = {
-          data: ["0x6d02", "hello world"],
-          pay: {
-            key: privKey
-          }
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject();
-
-          // input length 1 => from the user specifiec by the private key
-          assert.equal(generated.inputs.length, utxoSize)
-          // contains a 'changeScript'
-          assert(generated.changeScript)
-
-          // must have two outputs
-          assert.equal(generated.outputs.length, 2)
-
-          let s1 = new bitcoin.Script(generated.outputs[0].script)
-
-          // the first output is OP_RETURN
-          assert(s1.chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-
-          // the second script is a pubkeyhashout (change address)
-          let s2 = new bitcoin.Script(generated.outputs[1].script)
-          assert(s2.isPublicKeyHashOut())
-
-          // script sends the money to the same address as the sender
-          // specified by the private key
-          const address = new bitcoin.PrivateKey(privKey).toAddress()
-          assert.equal(address.toString(), s2.toAddress().toString())
-
-          done()
-        })
-      })
-      /*
-      it('pay.filter', function(done) {
-        const options = {
-          data: ["0x6d02", "hello world"],
-          pay: {
-            key: privKey,
-            filter: {
-              v: 3,
-              q: {
-                find: {
-                }
-              }
-            }
-          }
-        }
-        datapay.build(options, function(err, tx) {
-          let generated = tx.toObject();
-
-          // input length 1 => from the user specifiec by the private key
-          assert.equal(generated.inputs.length, 5)
-          // contains a 'changeScript'
-          assert(generated.changeScript)
-
-          // must have two outputs
-          assert.equal(generated.outputs.length, 2)
-
-          let s1 = new bitcoin.Script(generated.outputs[0].script)
-
-          // the first output is OP_RETURN
-          assert(s1.chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-
-          // the second script is a pubkeyhashout (change address)
-          let s2 = new bitcoin.Script(generated.outputs[1].script)
-          assert(s2.isPublicKeyHashOut())
-
-          // script sends the money to the same address as the sender
-          // specified by the private key
-          const address = new bitcoin.PrivateKey(privKey).toAddress()
-          assert.equal(address.toString(), s2.toAddress().toString())
-
-          done()
-        })
-        
-      })
-      */
-    })
-    describe('attach coins to data', function() {
-      it('paying tip to 1 user', function(done) {
-        // send to myself
-        const receiver = new bitcoin.PrivateKey(privKey).toAddress()
+        });
+      });
+    });
 
-        const options = {
-          data: ["0x6d02", "hello world"],
-          pay: {
-            key: privKey,
-            to: [{
-              address: receiver,
-              value: 1000
-            }]
-          }
-        }
-        datapay.build(options, function(err, tx) {
-          // output has 3 items
-          assert.equal(tx.outputs.length, 3)
-
-          // 1. OP_RETURN
-          let s1 = new bitcoin.Script(tx.outputs[0].script)
-          assert(s1.chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-          // 2. Manual transaction output
-          // the second script is a pubkeyhashout (change address)
-          let s2 = new bitcoin.Script(tx.outputs[1].script)
-          assert(s2.isPublicKeyHashOut())
-          // the value sent is 1000
-          assert.equal(tx.outputs[1].satoshis, 1000)
-          // the receiver address is the address specified in pay.to
-          assert.equal(s2.toAddress().toString(), bitcoin.Address(receiver).toString())
-
-          // 3. Change address transaction output
-          let s3 = new bitcoin.Script(tx.outputs[2].script)
-          assert(s3.isPublicKeyHashOut())
-          done()
-        })
-      })
-      it('paying tip to 2 users', function(done) {
-        // send to myself
-        const receiver = new bitcoin.PrivateKey(privKey).toAddress()
+    describe("with async/await", function() {
+      it("should build a transaction", async function() {
+        sandbox.stub(datapay, "getUTXOs").resolves(utxos);
 
         const options = {
-          data: ["0x6d02", "hello world"],
-          pay: {
-            key: privKey,
-            to: [{
-              address: receiver,
-              value: 1000
-            }, {
-              address: receiver,
-              value: 2000
-            }]
-          }
+          pay: { key: privateKey, to: [{ address: toAddress1, value: 5000 }] },
+          data: ["async", "await"]
+        };
+        const tx = await datapay.build(options);
+        assert(tx.inputs.length, 2);
+        assert(tx.outputs.length, 3);
+        assert(tx.isFullySigned());
+      });
+
+      it("should handle getUTXOs error", async function() {
+        sandbox.stub(datapay, "getUTXOs").rejects();
+
+        const options = { pay: { key: privateKey } };
+        await assert.rejects(async () => await datapay.build(options));
+      });
+    });
+
+    it("should send output to address", async function() {
+      const options = { pay: { to: [{ address: toAddress1, value: 100000 }] } };
+      const tx = await datapay.build(options);
+      assert.equal(tx.outputs.length, 1);
+      assert.equal(tx.outputs[0].satoshis, 100000);
+      assert.equal(
+        tx.outputs[0].script.toHex(),
+        "76a9148c30a62437626c504205900ed6def906b0b0b3fd88ac"
+      );
+    });
+
+    it("should add change output", async function() {
+      sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+
+      const options = { pay: { key: privateKey } };
+      const tx = await datapay.build(options);
+      const changeOutput = tx.getChangeOutput();
+      assert(changeOutput);
+      assert.equal(changeOutput.script.toHex(), privateKeyRedeem);
+    });
+
+    it("should apply fixed fee", async function() {
+      sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+
+      const options = { pay: { key: privateKey, fee: 500 } };
+      const tx = await datapay.build(options);
+      assert.equal(tx.getFee(), 500);
+    });
+
+    it("should apply custom fee rate", async function() {
+      sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+
+      const options = { pay: { key: privateKey, feeb: 5.0 } };
+      const tx = await datapay.build(options);
+      assert.equal(tx._feePerKb, 5000);
+    });
+
+    it("should filter utxo's", async function() {
+      sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+
+      const prevTxId =
+        "8a06f5d5449c0f68291171ad1a7cc427db9bef5abb93998b40c999f5e933eb89";
+      const options = {
+        pay: {
+          key: privateKey,
+          filter: utxos => utxos.filter(utxo => utxo.txid === prevTxId)
         }
-        datapay.build(options, function(err, tx) {
-          // output has 4 items
-          assert.equal(tx.outputs.length, 4)
-
-          // 1. OP_RETURN
-          let s1 = new bitcoin.Script(tx.outputs[0].script)
-          assert(s1.chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-          // 2. Manual transaction output
-          // the second script is a pubkeyhashout (change address)
-          let s2 = new bitcoin.Script(tx.outputs[1].script)
-          assert(s2.isPublicKeyHashOut())
-          // the value sent is 1000
-          assert.equal(tx.outputs[1].satoshis, 1000)
-          // the receiver address is the address specified in pay.to
-          assert.equal(s2.toAddress().toString(), bitcoin.Address(receiver).toString())
-
-          // 3. Manual transaction output
-          // the third script is a pubkeyhashout (change address)
-          let s3 = new bitcoin.Script(tx.outputs[2].script)
-          assert(s3.isPublicKeyHashOut())
-          // the value sent is 1000
-          assert.equal(tx.outputs[2].satoshis, 2000)
-          // the receiver address is the address specified in pay.to
-          assert.equal(s3.toAddress().toString(), bitcoin.Address(receiver).toString())
-
-          // 3. Change address transaction output
-          let s4 = new bitcoin.Script(tx.outputs[3].script)
-          assert(s4.isPublicKeyHashOut())
-          done()
-        })
-      })
-    })
-    describe('tx', function() {
-      describe('importing unsigned tx', function() {
-        it('tx only', function(done) {
-          // 1. build
-          const options = {
-            data: ["0x6d02", "hello world"]
-          }
-          datapay.build(options, function(err, original_tx) {
-            // 2. export
-            let exportedTx = original_tx.toString()
-            // exported transaction is string
-            assert.equal(typeof exportedTx, "string")
-            // 3. re-import
-            datapay.build({
-              tx: exportedTx
-            }, function(err, imported_tx) {
-              // the imported transaction should equal the original transaction
-              assert.equal(imported_tx.toString(), original_tx.toString())
-              done()
-            })
-          })
-        })
-        it('tx + data', function(done) {
-          // if there's a 'tx' attribute, it should ignore 'data' to avoid confusion
-          const options1 = {
-            data: ["0x6d02", "hello world"]
-          }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. build a new transaction using the exported transaction + new data
-            let options2 = {
-              tx: exported_tx1,
-              data: ["0x6d02", "bye world"]
-            }
-            datapay.build(options2, function(err, tx2) {
-              assert.equal(tx1.toString(), tx2.toString())
-              done()
-            })
-          })
-        })
-        it('tx + pay', function(done) {
-          // tx1 is an unsigned transaction
-          // and we create a signed version by adding the 'pay' attribute
-          const options1 = {
-            data: ["0x6d02", "hello world"]
+      };
+      const tx = await datapay.build(options);
+      assert.equal(tx.inputs.length, 1);
+      assert.equal(tx.inputs[0].prevTxId.toString("hex"), prevTxId);
+    });
+  });
+
+  describe("#send()", function() {
+    const tx = bsv
+      .Transaction()
+      .from(utxos)
+      .change(toAddress2)
+      .to(toAddress1, 5000)
+      .sign(privateKey);
+
+    describe("with callback", function() {
+      it("should broadcast a transaction", function(done) {
+        const broadcastFake = sandbox.fake.resolves(tx.hash);
+        sandbox.replace(datapay, "broadcast", broadcastFake);
+
+        datapay.send({ tx }, (err, txid) => {
+          try {
+            assert(broadcastFake.called, "transaction was not broadcast");
+            assert.equal(txid, tx.hash);
+            done();
+          } catch (err) {
+            done(err);
           }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. build a new transaction using the exported transaction + new data
-            let options2 = {
-              tx: exported_tx1,
-              pay: {
-                key: privKey
-              }
-            }
-            datapay.build(options2, function(err, tx2) {
-
-              // tx1's input should be empty
-              assert.equal(tx1.inputs.length, 0)
-              // tx2's input should now have as many as the utxoSize
-              assert.equal(tx2.inputs.length, utxoSize)
-
-              // tx1's output should have one item
-              assert.equal(tx1.outputs.length, 1)
-              // and it should be an OP_RETURN
-              let script1 = new bitcoin.Script(tx1.outputs[0].script)
-              assert(script1.chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-
-              // tx2's output should have two items
-              assert.equal(tx2.outputs.length, 2)
-              let script2 = [
-                new bitcoin.Script(tx2.outputs[0].script),
-                new bitcoin.Script(tx2.outputs[1].script)
-              ]
-              // the first should be OP_RETURN
-              assert(script2[0].chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-              // the second script is a pubkeyhashout (change address)
-              assert(script2[1].isPublicKeyHashOut())
-              done()
-            })
-          })
-        })
-        it('tx + pay + data', function(done) {
-          // tx1 is an unsigned transaction
-          // and we create a signed version by adding the 'pay' attribute
-          // but this time we also try to sneak in 'data'
-          // the 'data' should be ignored
-          const options1 = {
-            data: ["0x6d02", "hello world"]
-          }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. build a new transaction using the exported transaction + new data
-            let options2 = {
-              tx: exported_tx1,
-              data: ["0x6d02", "bye world"],  // trying to sneak in 'data'
-              pay: {
-                key: privKey
-              }
-            }
-            datapay.build(options2, function(err, tx2) {
-
-              // tx2's input should now have as many as the utxoSize
-              assert.equal(tx2.inputs.length, utxoSize)
-
-              // tx2's output should have two items
-              assert.equal(tx2.outputs.length, 2)
-              let script2 = [
-                new bitcoin.Script(tx2.outputs[0].script),
-                new bitcoin.Script(tx2.outputs[1].script)
-              ]
-              // the first should be OP_RETURN
-              assert(script2[0].chunks[0].opcodenum, bitcoin.Opcode.OP_RETURN)
-              // the second script is a pubkeyhashout (change address)
-              assert(script2[1].isPublicKeyHashOut())
-
-              // the script for the original OP_RETURN
-              // should match the new OP_RETURN script
-              // because the 'data' attribute was ignored
-              let script1 = new bitcoin.Script(tx1.outputs[0].script)
-              assert.equal(script1.toString(), script2[0].toString())
-              done()
-            })
-          })
-        })
-      })
-      describe('importing signed tx', function() {
-        it('tx only', function(done) {
-          const options1 = {
-            data: ["0x6d02", "hello world"],
-            pay: { key: privKey }
-          }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. import transaction
-            datapay.build({ tx: exported_tx1 }, function(err, tx2) {
-              // the imported transaction should have as many as the utxoSize
-              assert.equal(tx2.inputs.length, utxoSize)
-              // the input should have 'script' property
-              assert(tx2.inputs[0].script)
-              // the script should be public key hash in
-              let script = new bitcoin.Script(tx2.inputs[0].script)
-              assert(script.isPublicKeyHashIn())
-              // the imported transaction's input script address should match
-              // the address corresponding to the originally imported private key
-              const address = new bitcoin.PrivateKey(privKey).toAddress()
-              assert.equal(address.toString(), script.toAddress().toString())
-              done()
-            })
-          })
-        })
-        it('tx + data', function(done) {
-          // the transaction has already been signed
-          // the data should be ignored
-          // Better yet, this shouldn't be used
-          const options1 = {
-            data: ["0x6d02", "hello world"],
-            pay: { key: privKey }
+        });
+      });
+
+      it("should propagate a build error", function(done) {
+        sandbox.stub(datapay, "build").rejects();
+
+        const options = { pay: { key: privateKey } };
+        datapay.send(options, (err, txid) => {
+          try {
+            assert(err, "an error was not returned in the callback");
+            done();
+          } catch (err) {
+            done(err);
           }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. import transaction
-            datapay.build({
-              tx: exported_tx1,
-              data: ["0x6d02", "bye world"]
-            }, function(err, tx2) {
-              assert(err.toString(), "the transaction is already signed and cannot be modified")
-              assert.equal(tx2, undefined)
-              done()
-            })
-          })
-        })
-        it('tx+ pay', function(done) {
-          // the transaction has already been signed
-          // the pay attribute should be ignored
-          // and throw and error
-          const options1 = {
-            data: ["0x6d02", "hello world"],
-            pay: { key: privKey }
+        });
+      });
+
+      it("should propagate a broadcast error", function(done) {
+        sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+        sandbox.stub(datapay, "broadcast").rejects();
+
+        const options = { pay: { key: privateKey } };
+        datapay.send(options, (err, txid) => {
+          try {
+            assert(err, "an error was not returned in the callback");
+            done();
+          } catch (err) {
+            done(err);
           }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. import transaction
-            // But this time, we're updating the key attribute.
-            // This should re-sign the transaction
-            datapay.build({
-              tx: exported_tx1,
-              pay: {
-                key: privKey
-              }
-            }, function(err, tx2) {
-              assert(err.toString(), "the transaction is already signed and cannot be modified")
-              assert.equal(tx2, undefined)
-              done()
-            })
-          })
-        })
-        it('tx + pay + data', function(done) {
-          const options1 = {
-            data: ["0x6d02", "hello world"],
-            pay: { key: privKey }
+        });
+      });
+
+      it("should propagate a serialization error", function(done) {
+        // sending an unsigned transaction
+        const tx = bsv
+          .Transaction()
+          .from(utxos)
+          .change(toAddress1);
+
+        datapay.send({ tx }, (err, txid) => {
+          try {
+            assert(err, "an error was not returned in the callback");
+            done();
+          } catch (err) {
+            done(err);
           }
-          // 1. build initial transaction
-          datapay.build(options1, function(err, tx1) {
-            let exported_tx1 = tx1.toString();
-            // 2. import transaction
-            // But this time, we're updating the key attribute.
-            // This should re-sign the transaction
-            datapay.build({
-              tx: exported_tx1,
-              data: ["0x6d02", "bye world"],
-              pay: {
-                key: privKey
-              }
-            }, function(err, tx2) {
-              assert(err.toString(), "the transaction is already signed and cannot be modified")
-              assert.equal(tx2, undefined)
-              done()
-            })
-          })
-        })
-      })
-    })
-  })
-  describe('advanced', function() {
-    describe('bitcoin', function() {
-      it('exposes bitcoin', function() {
-        assert(datapay.bsv.Networks)
-        assert(datapay.bsv.Opcode)
-      })
-    })
-    describe('connect', function() {
-      it('default', function() {
-        var insight = datapay.connect();
-        assert.equal(insight.constructor.name, "Insight")
-        assert.equal(insight.url, 'https://api.bitindex.network')
-      })
-      it('connect with url', function() {
-        var insight = datapay.connect('https://api.bitindex.network');
-        assert.equal(insight.constructor.name, "Insight")
-        assert.equal(insight.url, 'https://api.bitindex.network')
-      })
-    })
-  })
-})
+        });
+      });
+    });
+
+    describe("with async/await", function() {
+      it("should broadcast a transaction", async function() {
+        const broadcastFake = sandbox.fake.resolves(tx.hash);
+        sandbox.replace(datapay, "broadcast", broadcastFake);
+
+        const txid = await datapay.send({ tx });
+        assert(broadcastFake.called, "transaction was not broadcast");
+        assert.equal(txid, tx.hash);
+      });
+
+      it("should propagate a build error", async function() {
+        sandbox.stub(datapay, "build").rejects();
+
+        const options = { pay: { key: privateKey } };
+        assert.rejects(datapay.send(options));
+      });
+
+      it("should propagate a broadcast error", async function() {
+        sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+        sandbox.stub(datapay, "broadcast").rejects();
+
+        const options = { pay: { key: privateKey } };
+        assert.rejects(datapay.send(options));
+      });
+
+      it("should propagate a serialization error", async function() {
+        // sending an unsigned transaction
+        const tx = bsv
+          .Transaction()
+          .from(utxos)
+          .change(toAddress1);
+
+        assert.rejects(datapay.send({ tx }));
+      });
+    });
+
+    it("should build a transaction if not supplied", async function() {
+      const broadcastFake = sandbox.fake.resolves("faketxid");
+      const buildFake = sandbox.fake.resolves(tx);
+      sandbox.replace(datapay, "broadcast", broadcastFake);
+      sandbox.replace(datapay, "build", buildFake);
+      sandbox.stub(datapay, "getUTXOs").resolves(utxos);
+
+      const options = {
+        pay: { key: privateKey, to: [{ address: toAddress1, value: 5000 }] }
+      };
+      const txid = await datapay.send(options);
+
+      assert.equal(txid, "faketxid", "transaction was not broadcast");
+      assert(buildFake.calledWith(options));
+      assert(broadcastFake.calledWith(tx.serialize()));
+    });
+  });
+});

From 3d12b66fe325216c6cca99b864db1e8dc0c56564 Mon Sep 17 00:00:00 2001
From: Breavyn <breavyn@breavyn.com>
Date: Thu, 24 Oct 2019 10:27:13 +1000
Subject: [PATCH 15/20] Export connect function.

---
 index.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index d86c737..7ec7568 100644
--- a/index.js
+++ b/index.js
@@ -16,11 +16,11 @@ const callbackWrapper = func => {
 
 let insight;
 
-const connect = options => {
+module.exports.connect = options => {
   insight = axios.create(options);
 };
 
-connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
+module.exports.connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
 
 module.exports.getUTXOs = async address => {
   try {

From 5b60e13c0b95dd46329fc29e00255c03ffa0cb7b Mon Sep 17 00:00:00 2001
From: Breavyn <breavyn@breavyn.com>
Date: Fri, 25 Oct 2019 15:53:03 +1000
Subject: [PATCH 16/20] Bump dependencies.

---
 package-lock.json | 403 ++++++++++------------------------------------
 package.json      |   8 +-
 2 files changed, 93 insertions(+), 318 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index e0eee7c..d9aa623 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,9 +14,9 @@
       }
     },
     "@sinonjs/formatio": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.1.tgz",
-      "integrity": "sha512-tsHvOB24rvyvV2+zKMmPkZ7dXX6LSLKZ7aOtXY6Edklp0uRcgGpOsQTTGTcWViFyx4uhWc6GV8QdnALbIbIdeQ==",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.2.tgz",
+      "integrity": "sha512-B8SEsgd8gArBLMD6zpRw3juQ2FVSsmdd7qlevyDqzS9WTCtvF55/gAL+h6gue8ZvPYcdiPdvueM/qm//9XzyTQ==",
       "dev": true,
       "requires": {
         "@sinonjs/commons": "^1",
@@ -144,9 +144,9 @@
       }
     },
     "bsv": {
-      "version": "0.30.0",
-      "resolved": "https://registry.npmjs.org/bsv/-/bsv-0.30.0.tgz",
-      "integrity": "sha512-8TiRw8RSTX+SZ+karPipBIn5TC2/mWPULBTapzuPu1+hHSRw/d6FzZTjlPyp/LPqytlCHqchWLRSSTUYl0Evbg==",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/bsv/-/bsv-1.0.0.tgz",
+      "integrity": "sha512-K7IpV4G7BHBO5zK/rDslrEnl8qmgSx3iKgD5oZ78MOtX043IoqDyVQLa2/FvqczgbVXYAsPaYL8q3u5up8M7oA==",
       "dev": true,
       "requires": {
         "aes-js": "^3.1.2",
@@ -158,14 +158,6 @@
         "hash.js": "^1.1.7",
         "inherits": "2.0.3",
         "unorm": "1.4.1"
-      },
-      "dependencies": {
-        "inherits": {
-          "version": "2.0.3",
-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-          "dev": true
-        }
       }
     },
     "buffer-compare": {
@@ -203,14 +195,42 @@
       }
     },
     "cliui": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
-      "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
+      "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
       "dev": true,
       "requires": {
-        "string-width": "^2.1.1",
-        "strip-ansi": "^4.0.0",
-        "wrap-ansi": "^2.0.0"
+        "string-width": "^3.1.0",
+        "strip-ansi": "^5.2.0",
+        "wrap-ansi": "^5.1.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
       }
     },
     "clone-deep": {
@@ -224,12 +244,6 @@
         "shallow-clone": "^3.0.0"
       }
     },
-    "code-point-at": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
-      "dev": true
-    },
     "color-convert": {
       "version": "1.9.3",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
@@ -251,19 +265,6 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
       "dev": true
     },
-    "cross-spawn": {
-      "version": "6.0.5",
-      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
-      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
-      "dev": true,
-      "requires": {
-        "nice-try": "^1.0.4",
-        "path-key": "^2.0.1",
-        "semver": "^5.5.0",
-        "shebang-command": "^1.2.0",
-        "which": "^1.2.9"
-      }
-    },
     "debug": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
@@ -314,19 +315,10 @@
       "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
       "dev": true
     },
-    "end-of-stream": {
-      "version": "1.4.1",
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-      "integrity": "sha512-w2LXjoL8oRdRQN+hOyppuXs+V/fVAYtpcrRxZuF7Kt/Oc+Jr2uAcVntaUTNT6w5ihoWfFDpNY8CPx1QskxZ/pw==",
+      "version": "13.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
+      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
       "dev": true,
       "requires": {
         "camelcase": "^5.0.0",
@@ -1279,58 +1098,14 @@
       }
     },
     "yargs-unparser": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
-      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.6.0.tgz",
+      "integrity": "sha512-W9tKgmSn0DpSatfri0nx52Joq5hVXgeLiqR/5G0sZNDoLZFOr/xjBUDcShCOGNsBnEMNo1KAMBkTej1Hm62HTw==",
       "dev": true,
       "requires": {
         "flat": "^4.1.0",
-        "lodash": "^4.17.11",
-        "yargs": "^12.0.5"
-      },
-      "dependencies": {
-        "get-caller-file": {
-          "version": "1.0.3",
-          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
-          "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
-          "dev": true
-        },
-        "require-main-filename": {
-          "version": "1.0.1",
-          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
-          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
-          "dev": true
-        },
-        "yargs": {
-          "version": "12.0.5",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
-          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
-          "dev": true,
-          "requires": {
-            "cliui": "^4.0.0",
-            "decamelize": "^1.2.0",
-            "find-up": "^3.0.0",
-            "get-caller-file": "^1.0.1",
-            "os-locale": "^3.0.0",
-            "require-directory": "^2.1.1",
-            "require-main-filename": "^1.0.1",
-            "set-blocking": "^2.0.0",
-            "string-width": "^2.0.0",
-            "which-module": "^2.0.0",
-            "y18n": "^3.2.1 || ^4.0.0",
-            "yargs-parser": "^11.1.1"
-          }
-        },
-        "yargs-parser": {
-          "version": "11.1.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
-          "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
-          "dev": true,
-          "requires": {
-            "camelcase": "^5.0.0",
-            "decamelize": "^1.2.0"
-          }
-        }
+        "lodash": "^4.17.15",
+        "yargs": "^13.3.0"
       }
     }
   }
diff --git a/package.json b/package.json
index 4dbc10e..1a22b49 100644
--- a/package.json
+++ b/package.json
@@ -21,15 +21,15 @@
     "axios": "^0.19.0"
   },
   "peerDependencies": {
-    "bsv": "^0.30.0"
+    "bsv": "^1.0.0"
   },
   "files": [
     "dist"
   ],
   "devDependencies": {
-    "bsv": "^0.30.0",
-    "mocha": "^6.2.0",
-    "sinon": "^7.4.2",
+    "bsv": "^1.0.0",
+    "mocha": "^6.2.2",
+    "sinon": "^7.5.0",
     "uglify-es": "^3.3.9"
   }
 }

From 12962fddf8b748f2e3a1114e738e965f109c9a71 Mon Sep 17 00:00:00 2001
From: breavyn <breavyn@breavyn.com>
Date: Wed, 5 Feb 2020 09:44:05 +1000
Subject: [PATCH 17/20] Use safe data out as default, and remove the option to
 disable it.

---
 README.md    |  6 ++++--
 index.js     |  8 ++++----
 test/test.js | 28 ++++++++--------------------
 3 files changed, 16 insertions(+), 26 deletions(-)

diff --git a/README.md b/README.md
index e937e19..9fc954c 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,6 @@ Both build and send now return promises which can be used with async/await.
 ```
 const tx = await datapay.build({
   data: ["using promises with datapay"],
-  safe: true,
   pay: {
     key: "<your privatekey>"
   }
@@ -46,7 +45,6 @@ function.
 ```
 const tx = await datapay.build({
   data: ["using promises with datapay"],
-  safe: true,
   pay: {
     key: "<your privatekey>",
     filter: utxos => utxos.filter(utxo => utxo.confirmations > 5)
@@ -54,6 +52,10 @@ const tx = await datapay.build({
 });
 ```
 
+## 5. Genesis defaults
+
+`OP_FALSE OP_RETURN` is now used by default and the `safe: true` option has been removed.
+
 # Using This Fork
 
 The api here is still evolving so I recommend using the package-lock file or installing a specific commit.
diff --git a/index.js b/index.js
index 7ec7568..f360272 100644
--- a/index.js
+++ b/index.js
@@ -42,11 +42,11 @@ module.exports.broadcast = async rawtx => {
   }
 };
 
-module.exports.build = callbackWrapper(async ({ data, safe, pay }) => {
+module.exports.build = callbackWrapper(async ({ data, pay }) => {
   const tx = new bsv.Transaction();
 
   if (data && data.length) {
-    const script = module.exports.createDataScript(data, safe);
+    const script = module.exports.createDataScript(data);
     tx.addOutput(new bsv.Transaction.Output({ script, satoshis: 0 }));
   }
 
@@ -79,13 +79,13 @@ module.exports.send = callbackWrapper(async options => {
   return await module.exports.broadcast(tx.serialize());
 });
 
-module.exports.createDataScript = (data, safe) => {
+module.exports.createDataScript = data => {
   if (typeof data === "string") return bsv.Script.fromHex(data);
 
   const s = new bsv.Script();
 
   // Add OP_RETURN
-  if (safe) s.add(bsv.Opcode.OP_FALSE);
+  s.add(bsv.Opcode.OP_FALSE);
   s.add(bsv.Opcode.OP_RETURN);
 
   // Add data
diff --git a/test/test.js b/test/test.js
index cf680ad..d431776 100644
--- a/test/test.js
+++ b/test/test.js
@@ -36,7 +36,7 @@ describe("datapay", function() {
         const script = datapay.createDataScript([{ op: 78 }, "hello world"]);
         assert.equal(
           script.toASM(),
-          "OP_RETURN OP_PUSHDATA4 68656c6c6f20776f726c64"
+          "0 OP_RETURN OP_PUSHDATA4 68656c6c6f20776f726c64"
         );
       });
 
@@ -46,22 +46,20 @@ describe("datapay", function() {
           "hello world"
         ]);
 
-        assert.equal(script.toASM(), "OP_RETURN 616263 68656c6c6f20776f726c64");
+        assert.equal(
+          script.toASM(),
+          "0 OP_RETURN 616263 68656c6c6f20776f726c64"
+        );
       });
 
       it("should add a utf-8 string", function() {
         const script = datapay.createDataScript(["hello world"]);
-        assert.equal(script.toASM(), "OP_RETURN 68656c6c6f20776f726c64");
+        assert.equal(script.toASM(), "0 OP_RETURN 68656c6c6f20776f726c64");
       });
 
       it("should add a hex string", function() {
         const script = datapay.createDataScript(["0x6d02", "hello world"]);
-        assert.equal(script.toASM(), "OP_RETURN 6d02 68656c6c6f20776f726c64");
-      });
-
-      it("should add OP_0 with safe option", function() {
-        const script = datapay.createDataScript(["hello world"], true);
-        assert.equal(script.toASM(), "0 OP_RETURN 68656c6c6f20776f726c64");
+        assert.equal(script.toASM(), "0 OP_RETURN 6d02 68656c6c6f20776f726c64");
       });
     });
 
@@ -76,23 +74,13 @@ describe("datapay", function() {
 
   describe("#build()", function() {
     describe("with data", function() {
-      it("should add OP_0 with safe option", async function() {
-        const options = { data: ["hello world"], safe: true };
-        const tx = await datapay.build(options);
-        assert.equal(tx.outputs.length, 1);
-        assert.equal(
-          tx.outputs[0].script.toASM(),
-          "0 OP_RETURN 68656c6c6f20776f726c64"
-        );
-      });
-
       it("should add a data output", async function() {
         const options = { data: ["hello world"] };
         const tx = await datapay.build(options);
         assert.equal(tx.outputs.length, 1);
         assert.equal(
           tx.outputs[0].script.toASM(),
-          "OP_RETURN 68656c6c6f20776f726c64"
+          "0 OP_RETURN 68656c6c6f20776f726c64"
         );
       });
     });

From 3bc2f930990ee92faf839e8976384023c27492cf Mon Sep 17 00:00:00 2001
From: breavyn <breavyn@breavyn.com>
Date: Wed, 5 Feb 2020 09:45:20 +1000
Subject: [PATCH 18/20] Updated default insight api url.

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index f360272..fd8c391 100644
--- a/index.js
+++ b/index.js
@@ -20,7 +20,7 @@ module.exports.connect = options => {
   insight = axios.create(options);
 };
 
-module.exports.connect({ baseURL: "https://api.bitindex.network/api/v3/main" });
+module.exports.connect({ baseURL: "https://api.mattercloud.network/api/v3/main" });
 
 module.exports.getUTXOs = async address => {
   try {

From 1c0a9267f4c78ded6c1e4f6b613226c1cba190ed Mon Sep 17 00:00:00 2001
From: breavyn <breavyn@breavyn.com>
Date: Fri, 28 Feb 2020 09:09:03 +1000
Subject: [PATCH 19/20] Updated default insight api url.

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index fd8c391..073b9b4 100644
--- a/index.js
+++ b/index.js
@@ -20,7 +20,7 @@ module.exports.connect = options => {
   insight = axios.create(options);
 };
 
-module.exports.connect({ baseURL: "https://api.mattercloud.network/api/v3/main" });
+module.exports.connect({ baseURL: "https://api.mattercloud.net/api/v3/main" });
 
 module.exports.getUTXOs = async address => {
   try {

From 4a939f881491b032ebd432d3e9f84cee2f685313 Mon Sep 17 00:00:00 2001
From: breavyn <breavyn@breavyn.com>
Date: Fri, 28 Feb 2020 09:13:11 +1000
Subject: [PATCH 20/20] Bump dependencies.

---
 package-lock.json | 408 +++++++++++++++++++++++++++++++---------------
 package.json      |  10 +-
 2 files changed, 278 insertions(+), 140 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index d9aa623..b07f2d2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,33 +5,43 @@
   "requires": true,
   "dependencies": {
     "@sinonjs/commons": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.6.0.tgz",
-      "integrity": "sha512-w4/WHG7C4WWFyE5geCieFJF6MZkbW4VAriol5KlmQXpAQdxvV0p26sqNZOW6Qyw6Y0l9K4g+cHvvczR2sEEpqg==",
+      "version": "1.7.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.7.1.tgz",
+      "integrity": "sha512-Debi3Baff1Qu1Unc3mjJ96MgpbwTn43S1+9yJ0llWygPwDNu2aaWBD6yc9y/Z8XDRNhx7U+u2UDg2OGQXkclUQ==",
       "dev": true,
       "requires": {
         "type-detect": "4.0.8"
       }
     },
+    "@sinonjs/fake-timers": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-6.0.0.tgz",
+      "integrity": "sha512-atR1J/jRXvQAb47gfzSK8zavXy7BcpnYq21ALon0U99etu99vsir0trzIO3wpeLtW+LLVY6X7EkfVTbjGSH8Ww==",
+      "dev": true,
+      "requires": {
+        "@sinonjs/commons": "^1.7.0"
+      }
+    },
     "@sinonjs/formatio": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.2.tgz",
-      "integrity": "sha512-B8SEsgd8gArBLMD6zpRw3juQ2FVSsmdd7qlevyDqzS9WTCtvF55/gAL+h6gue8ZvPYcdiPdvueM/qm//9XzyTQ==",
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-5.0.1.tgz",
+      "integrity": "sha512-KaiQ5pBf1MpS09MuA0kp6KBQt2JUOQycqVG1NZXvzeaXe5LGFqAKueIS0bw4w0P9r7KuBSVdUk5QjXsUdu2CxQ==",
       "dev": true,
       "requires": {
         "@sinonjs/commons": "^1",
-        "@sinonjs/samsam": "^3.1.0"
+        "@sinonjs/samsam": "^5.0.2"
       }
     },
     "@sinonjs/samsam": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.3.3.tgz",
-      "integrity": "sha512-bKCMKZvWIjYD0BLGnNrxVuw4dkWCYsLqFOUWw8VgKF/+5Y+mE7LfHWPIYoDXowH+3a9LsWDMo0uAP8YDosPvHQ==",
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-5.0.2.tgz",
+      "integrity": "sha512-p3yrEVB5F/1wI+835n+X8llOGRgV8+jw5BHQ/cJoLBUXXZ5U8Tr5ApwPc4L4av/vjla48kVPoN0t6dykQm+Rvg==",
       "dev": true,
       "requires": {
-        "@sinonjs/commons": "^1.3.0",
-        "array-from": "^2.1.1",
-        "lodash": "^4.17.15"
+        "@sinonjs/commons": "^1.6.0",
+        "@sinonjs/formatio": "^5.0.0",
+        "lodash.get": "^4.4.2",
+        "type-detect": "^4.0.8"
       }
     },
     "@sinonjs/text-encoding": {
@@ -67,6 +77,16 @@
         "color-convert": "^1.9.0"
       }
     },
+    "anymatch": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.1.tgz",
+      "integrity": "sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==",
+      "dev": true,
+      "requires": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      }
+    },
     "argparse": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
@@ -76,19 +96,12 @@
         "sprintf-js": "~1.0.2"
       }
     },
-    "array-from": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/array-from/-/array-from-2.1.1.tgz",
-      "integrity": "sha1-z+nYwmYoudxa7MYqn12PHzUsEZU=",
-      "dev": true
-    },
     "axios": {
-      "version": "0.19.0",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
-      "integrity": "sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==",
+      "version": "0.19.2",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.2.tgz",
+      "integrity": "sha512-fjgm5MvRHLhx+osE2xoekY70AhARk3a6hkN+3Io1jc00jtquGvxYlKlsFUhmUET0V5te6CcZI7lcv2Ym61mjHA==",
       "requires": {
-        "follow-redirects": "1.5.10",
-        "is-buffer": "^2.0.2"
+        "follow-redirects": "1.5.10"
       }
     },
     "balanced-match": {
@@ -98,14 +111,20 @@
       "dev": true
     },
     "base-x": {
-      "version": "3.0.7",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.7.tgz",
-      "integrity": "sha512-zAKJGuQPihXW22fkrfOclUUZXM2g92z5GzlSMHxhO6r6Qj+Nm0ccaGNBzDZojzwOMkpjAv4J0fOv1U4go+a4iw==",
+      "version": "3.0.8",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.8.tgz",
+      "integrity": "sha512-Rl/1AWP4J/zRrk54hhlxH4drNxPJXYUaKffODVI53/dAsV4t9fBxyxYKAVPU1XBHxYwOWP9h9H0hM2MVw4YfJA==",
       "dev": true,
       "requires": {
         "safe-buffer": "^5.0.1"
       }
     },
+    "binary-extensions": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.0.0.tgz",
+      "integrity": "sha512-Phlt0plgpIIBOGTT/ehfFnbNlfsDEiqmzE2KRXoX1bLIlir4X/MR+zSyBEkL05ffWgnRSf/DXv+WrUAVr93/ow==",
+      "dev": true
+    },
     "bn.js": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
@@ -122,6 +141,15 @@
         "concat-map": "0.0.1"
       }
     },
+    "braces": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
+      "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+      "dev": true,
+      "requires": {
+        "fill-range": "^7.0.1"
+      }
+    },
     "brorand": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
@@ -144,15 +172,14 @@
       }
     },
     "bsv": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/bsv/-/bsv-1.0.0.tgz",
-      "integrity": "sha512-K7IpV4G7BHBO5zK/rDslrEnl8qmgSx3iKgD5oZ78MOtX043IoqDyVQLa2/FvqczgbVXYAsPaYL8q3u5up8M7oA==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/bsv/-/bsv-1.3.0.tgz",
+      "integrity": "sha512-/mguDGAgpvzF6mtBFN3kuAGmoCr3ciesJCWDqvcAflvtvGsJyR0lSR4xfage7QfHWrHn/Y4iyPCshbsH6gI0jQ==",
       "dev": true,
       "requires": {
         "aes-js": "^3.1.2",
         "bn.js": "=4.11.8",
         "bs58": "=4.0.1",
-        "buffer-compare": "=1.1.1",
         "clone-deep": "^4.0.1",
         "elliptic": "6.4.1",
         "hash.js": "^1.1.7",
@@ -160,12 +187,6 @@
         "unorm": "1.4.1"
       }
     },
-    "buffer-compare": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/buffer-compare/-/buffer-compare-1.1.1.tgz",
-      "integrity": "sha1-W+e+hTr4kZjR9N3AkNHWakiu9ZY=",
-      "dev": true
-    },
     "camelcase": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
@@ -194,6 +215,22 @@
         }
       }
     },
+    "chokidar": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.3.0.tgz",
+      "integrity": "sha512-dGmKLDdT3Gdl7fBUe8XK+gAtGmzy5Fn0XkkWQuYxGIgWVPPse2CxFA5mtrlD0TOHaHjEUqkWNyP1XdHoJES/4A==",
+      "dev": true,
+      "requires": {
+        "anymatch": "~3.1.1",
+        "braces": "~3.0.2",
+        "fsevents": "~2.1.1",
+        "glob-parent": "~5.1.0",
+        "is-binary-path": "~2.1.0",
+        "is-glob": "~4.0.1",
+        "normalize-path": "~3.0.0",
+        "readdirp": "~3.2.0"
+      }
+    },
     "cliui": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
@@ -316,27 +353,28 @@
       "dev": true
     },
     "es-abstract": {
-      "version": "1.16.0",
-      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.16.0.tgz",
-      "integrity": "sha512-xdQnfykZ9JMEiasTAJZJdMWCQ1Vm00NBw79/AWi7ELfZuuPCSOMDZbT9mkOfSctVtfhb+sAAzrm+j//GjjLHLg==",
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       "dev": true,
       "requires": {
         "isarray": "0.0.1"
       }
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+    "picomatch": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.1.tgz",
+      "integrity": "sha512-ISBaA8xQNmwELC7eOjqFKMESB2VIqt4PPDD0nsS95b/9dZXvVKOlz9keMSnoGGKcOHXfTvDD6WMaRoSc9UuhRA==",
+      "dev": true
+    },
+    "readdirp": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.2.0.tgz",
+      "integrity": "sha512-crk4Qu3pmXwgxdSgGhgA/eXiJAPQiX4GMOZZMXnqKxHX7TaoL+3gQVo/WeuAiogr07DpnfjIMpXXa+PAIvwPGQ==",
+      "dev": true,
+      "requires": {
+        "picomatch": "^2.0.4"
+      }
+    },
     "require-directory": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -845,27 +962,39 @@
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-      "version": "7.5.0",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-7.5.0.tgz",
-      "integrity": "sha512-AoD0oJWerp0/rY9czP/D6hDTTUYGpObhZjMpd7Cl/A6+j0xBE+ayL/ldfggkBXUs0IkvIiM1ljM8+WkOc5k78Q==",
-      "dev": true,
-      "requires": {
-        "@sinonjs/commons": "^1.4.0",
-        "@sinonjs/formatio": "^3.2.1",
-        "@sinonjs/samsam": "^3.3.3",
-        "diff": "^3.5.0",
-        "lolex": "^4.2.0",
-        "nise": "^1.5.2",
-        "supports-color": "^5.5.0"
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-9.0.0.tgz",
+      "integrity": "sha512-c4bREcvuK5VuEGyMW/Oim9I3Rq49Vzb0aMdxouFaA44QCFpilc5LJOugrX+mkrvikbqCimxuK+4cnHVNnLR41g==",
+      "dev": true,
+      "requires": {
+        "@sinonjs/commons": "^1.7.0",
+        "@sinonjs/fake-timers": "^6.0.0",
+        "@sinonjs/formatio": "^5.0.0",
+        "@sinonjs/samsam": "^5.0.1",
+        "diff": "^4.0.2",
+        "nise": "^4.0.1",
+        "supports-color": "^7.1.0"
       },
       "dependencies": {
+        "diff": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
+          "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+          "dev": true
+        },
+        "has-flag": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+          "dev": true
+        },
         "supports-color": {
-          "version": "5.5.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
-          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "version": "7.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.1.0.tgz",
+          "integrity": "sha512-oRSIpR8pxT1Wr2FquTNnGet79b3BWljqOuoW/h4oBhxJ/HUbX5nX6JSruTkvXDCFMwDPvsaTTbvMLKZWSy0R5g==",
           "dev": true,
           "requires": {
-            "has-flag": "^3.0.0"
+            "has-flag": "^4.0.0"
           }
         }
       }
@@ -893,9 +1022,9 @@
       }
     },
     "string.prototype.trimleft": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/string.prototype.trimleft/-/string.prototype.trimleft-2.1.0.tgz",
-      "integrity": "sha512-FJ6b7EgdKxxbDxc79cOlok6Afd++TTs5szo+zJTUyow3ycrRfJVE2pq3vcN53XexvKZu/DJMDfeI/qMiZTrjTw==",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimleft/-/string.prototype.trimleft-2.1.1.tgz",
+      "integrity": "sha512-iu2AGd3PuP5Rp7x2kEZCrB2Nf41ehzh+goo8TV7z8/XDBbsvc6HQIlUl9RjkZ4oyrW1XM5UwlGl1oVEaDjg6Ag==",
       "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
@@ -903,9 +1032,9 @@
       }
     },
     "string.prototype.trimright": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.0.tgz",
-      "integrity": "sha512-fXZTSV55dNBwv16uw+hh5jkghxSnc5oHq+5K/gXgizHwAvMetdAJlHqqoFC1FSDVPYWLkAKl2cxpUT41sV7nSg==",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.1.tgz",
+      "integrity": "sha512-qFvWL3/+QIgZXVmJBfpHmxLB7xsUXz6HsUmP8+5dRaC3Q7oKUv9Vo6aMCRZC1smrtyECFsIT30PqBJ1gTjAs+g==",
       "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
@@ -936,6 +1065,15 @@
         "has-flag": "^3.0.0"
       }
     },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
     "type-detect": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
diff --git a/package.json b/package.json
index 1a22b49..22f959b 100644
--- a/package.json
+++ b/package.json
@@ -18,18 +18,18 @@
   "license": "MIT",
   "unpkg": "dist/datapay.min.js",
   "dependencies": {
-    "axios": "^0.19.0"
+    "axios": "^0.19.2"
   },
   "peerDependencies": {
-    "bsv": "^1.0.0"
+    "bsv": "^1.3.0"
   },
   "files": [
     "dist"
   ],
   "devDependencies": {
-    "bsv": "^1.0.0",
-    "mocha": "^6.2.2",
-    "sinon": "^7.5.0",
+    "bsv": "^1.3.0",
+    "mocha": "^7.1.0",
+    "sinon": "^9.0.0",
     "uglify-es": "^3.3.9"
   }
 }