BIP-47 Reusable Payment Codes

A BIP47 compatible library written in TypeScript with transpiled JavaScript committed to git.

Examples

typescript

import ECPairFactory from 'ecpair';
import * as ecc from 'tiny-secp256k1';
import BIP47Factory from '.';
// You must wrap a tiny-secp256k1 compatible implementation
const ECPair = ECPairFactory(ecc);

const aliceSeedPhrase = 'response seminar brave tip suit recall often sound stick owner lottery motion';
const bobSeedPhrase = 'reward upper indicate eight swift arch injury crystal super wrestle already dentist';
const bobPaymentCode = 'PM8TJS2JxQ5ztXUpBBRnpTbcUXbUHy2T1abfrb3KkAAtMEGNbey4oumH7Hc578WgQJhPjBxteQ5GHHToTYHE3A1w6p7tU6KSoFmWBVbFGjKPisZDbP97';

// alice private bip47
const aliceBip47 = BIP47Factory(ecc).fromBip39Seed(aliceSeedPhrase);

// base58 payment code
const alicePaymentCode = aliceBip47.getSerializedPaymentCode();

// P2PKH notification address
const aliceNotificationAddress = aliceBip47.getNotificationAddress();

// bip47 from payment code
const bobPublicBip47 = BIP47Factory(ecc).fromPaymentCode(bobPaymentCode);

// third payment address from alice to bob
const paymentAddress = aliceBip47.getPaymentAddress(bobPublicBip47.getPaymentCodeNode(), 2);

// bob private bip47
const bobPrivateBip47 = BIP47Factory(ecc).fromBip39Seed(bobSeedPhrase);

// third alice to bob wallet (bip32)
const wallet = bobPrivateBip47.getPaymentWallet(aliceBip47.getPaymentCodeNode(), 2);

// third wallet private key
const privateKey = wallet.privateKey?.toString('hex');

// examples of how to generate blinded payment code
// and retrieving payment code from notification transaction
// can be found in tests

see tests for more examples.

Supported Functionality

• generate payment code from seed phrase or seed hex
• generate payment addresses
• generate notification address from payment code
• generate receiving addresses/privateKeys for a payment code
• generate blinded payment code for notification transaction
• retrieve payment code from raw notification transaction

Reference

BIP-47

BIP-47 Test Vectors

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