bitjson · February 10, 2020 17:58 · Feb 10, 2020
diff --git a/example.ts b/example.ts
@@ -0,0 +1,46 @@
+import { instantiateSecp256k1, hexToBin, instantiateRipemd160, encodeCashAddress, CashAddressType, instantiateSha256, encodeCashAddressFormat, attemptCashAddressFormatErrorCorrection, decodeCashAddress, decodeCashAddressFormat, stringify } from 'bitcoin-ts';
+
+(async () => {
+  const secp256k1 = await instantiateSecp256k1();
+  const sha256 = await instantiateSha256();
+  const ripemd160 = await instantiateRipemd160();
+
+  // Create an address from a private key
+  const privateKey = hexToBin('f85d4bd8a03ca106c9deb47b791803dac7f0333809e3f1dd04d182e0aba6e553');
+  const publicKey = secp256k1.derivePublicKeyCompressed(privateKey);
+  const publicKeyHash = ripemd160.hash(sha256.hash(publicKey));
+
+  // Encode a P2PKH CashAddress
+  const cashAddress = encodeCashAddress('bchtest', CashAddressType.P2PKH, publicKeyHash);
+
+  // Decode a CashAddress
+  const cashAddressDecoded = decodeCashAddress('bchtest:qq2azmyyv6dtgczexyalqar70q036yund53jvfde0x');
+
+  // Encode a P2PKH SLP Address (uses the CashAddress format)
+  const slpAddress = encodeCashAddressFormat('slptest', 0, publicKeyHash);
+
+  // Decode an SLP Address (uses the CashAddress format)
+  const slpDecoded = decodeCashAddressFormat('slptest:qq2azmyyv6dtgczexyalqar70q036yund52xtjhwam');
+
+  // Fix up to 2 errors in a CashAddress-formatted string
+  const broken = 'bitauth:qwtcxp42fcp06phz2xec6t5krau0ftewxefy50j9xyfxwa38df40zp5xz6t5w';
+  const result = attemptCashAddressFormatErrorCorrection(broken);
+
+  // Example prompt to correct a Bitauth ID
+  const pointToCorrections = (c: number[]) => Array.from({ length: c[c.length - 1] + 1 }, (_, i) => c.includes(i) ? '^' : '-').join('');
+
+  console.log('Cash Address:');
+  console.log(cashAddress);
+  console.log(stringify(cashAddressDecoded), '\n');
+
+  console.log('SLP Address:');
+  console.log(slpAddress);
+  console.log(stringify(slpDecoded), '\n');
+
+  console.log('Error Correction:');
+  console.log(result);
+  console.log(typeof result === 'string' ? '[no correction]' : `
+You entered:  ${broken}
+              ${pointToCorrections(result.corrections)}
+Did you mean: ${result.address}?`);
+})();
diff --git a/output b/output
@@ -0,0 +1,26 @@
+Cash Address:
+bchtest:qq2azmyyv6dtgczexyalqar70q036yund53jvfde0x
+{
+  "hash": "<Uint8Array: 0x15d16c84669ab46059313bf0747e781f1d13936d>",
+  "prefix": "bchtest",
+  "type": 0
+} 
+
+SLP Address:
+slptest:qq2azmyyv6dtgczexyalqar70q036yund52xtjhwam
+{
+  "hash": "<Uint8Array: 0x15d16c84669ab46059313bf0747e781f1d13936d>",
+  "prefix": "slptest",
+  "version": 0
+} 
+
+Error Correction:
+{
+  address: 'bitauth:qwtcxp42fcp06phz2xec6t5krau0ftew5efy50j9xyfxwa38df40zp58z6t5w',
+  corrections: [ 40, 63 ]
+}
+
+You entered:  bitauth:qwtcxp42fcp06phz2xec6t5krau0ftewxefy50j9xyfxwa38df40zp5xz6t5w
+              ----------------------------------------^----------------------^
+Did you mean: bitauth:qwtcxp42fcp06phz2xec6t5krau0ftew5efy50j9xyfxwa38df40zp58z6t5w?
+