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I want to create bitcoin address from extended public key, without exposing private key but did not get any success till now. Do someone know how to do it? I am using bitcore-lib package

  • can you provide any code and the problems you're having? – JBaczuk Jul 24 '18 at 13:36
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According to BIP32 you're trying to generate a non-hardened child address, see BIP32 - Public parent key → public child key.

Using bitcore-lib, to derive a non-hardened child public key and a P2PKH address:

var bitcore = require('bitcore-lib');
var Address = bitcore.Address;
var PublicKey = bitcore.PublicKey;
var Networks = bitcore.Networks;

var hdPublickey = new bitcore.HDPublicKey('tpubD6NzVbkrYhZ4XLMmry7XriYJ6Xgx1vQqoUZHLUXQPDB32n7pQYaWSMpRttm2sHzYjsQqrsAZYyJCmoEJB51oSdqZxq7epGjP4vHriCYz7Tp');
var orderPublickey = hdPublickey.deriveChild("m/44/145/0/0");
var pubkey = new PublicKey(orderPublickey.publicKey);
var address = Address.fromPublicKey(pubkey, Networks.testnet);
console.log("address", address);

Returns:
address <Address: mkVBk6gZ7rBLYXvpdcKwTEq6SjHvSeLwZ8, type: pubkeyhash, network: testnet>

  • could we convert this publicKey into bitcoin base58 address? – rahul saini Jul 24 '18 at 13:51
  • I got this method bitcore.Address.fromPublicKey() but it is not working – rahul saini Jul 24 '18 at 13:58
  • What is it doing? Also, try var address = Address(publicKey, 'mainnet').toString(); Also it depends on what type of address you want (p2sh or p2pkh) – JBaczuk Jul 24 '18 at 14:02
  • please define Address? do you have any working code that can generate bitcoin address from xpub? – rahul saini Jul 24 '18 at 14:05
  • Have you tried the above? Is it not working for you? – JBaczuk Jul 24 '18 at 14:14

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