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in Blockchain by (12.7k points)

I am trying to use bitcore-lib to generate bitcoin address and fetch unspent transaction using bitcore-explorer.. to generate the address here is the code:

var bitcore = require('bitcore-lib');

var rand_buffer = bitcore.crypto.Random.getRandomBuffer(32);

var rand_number = bitcore.crypto.BN.fromBuffer(rand_buffer);

var privateKay = new bitcore.PrivateKey(rand_number);

var privateKeyWif = privateKay.toWIF();

var address = privateKay.toAddress('testnet');






  privateKeyWif: privateKeyWif,



Which is working fine... the output is:

{ rand_buffer: <Buffer 55 8b 27 c4 51 87 97 17 9a 7d 1d 72 48 26 e5 83 95 74 5b 3b b1 b4 b5 b6 a7 1c df 9f 18 e6 97 2e>,

  rand_number_hex: <BN: 558b27c4518797179a7d1d724826e58395745b3bb1b4b5b6a71cdf9f18e6972e>,

  rand_number_dec: '38692458332424984226826540178179935156087120588336482991409403810055901845294',

  privateKey: <PrivateKey: 558b27c4518797179a7d1d724826e58395745b3bb1b4b5b6a71cdf9f18e6972e, network: livenet>,

  privateKeyWif: 'Kz5zkBwfiYNkyswsKjot4wWmxHWUZdVMmxf65Z5wLk29ufhxnnQT',

  address: <Address: msTDjA4PmyePSWx2VcaQWoWoQ7gWzU2Kqx, type: pubkeyhash, network: testnet> }

after doing any transaction on the generated address, I need to use bitcore-explorers so I requires bitcore-explorers here is the code:

var Insight = require('bitcore-explorers').Insight;

var insight = new Insight('testnet');


  if(error) return console.log(error);



The problem is when I require bitcore-explorers it gives me the following error:


    throw new Error(message);


Error: More than one instance of bitcore-lib found. Please make sure to require bitcore-lib and check that submodules do not

also include their own bitcore-lib dependency.

    at Object.bitcore.versionGuard (D:\RAHEEL\Projects\gateway\node_modules\bitcore-explorers\node_modules\bitcore-lib\index.


    at Object.<anonymous> (D:\RAHEEL\Projects\gateway\node_modules\bitcore-explorers\node_modules\bitcore-lib\index.js:15:9)

    at Module._compile (module.js:570:32)

    at Object.Module._extensions..js (module.js:579:10)

    at Module.load (module.js:487:32)

    at tryModuleLoad (module.js:446:12)

    at Function.Module._load (module.js:438:3)

    at Module.require (module.js:497:17)

    at require (internal/module.js:20:19)

    at Object.<anonymous> (D:\RAHEEL\Projects\gateway\node_modules\bitcore-explorers\lib\models\addressinfo.js:3:15)

1 Answer

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by (29.5k points)

Hi, I don't know actual fix for this but I know a workaround which works which is as follows:

you don't need to patch bitcore-p2p/node_modules/bitcore-lib/index.js. Instead, what you could do is for project's package.json  maintain a single bitocore-p2p dependency and then reference it's (the one-and-only) v0.14.0 bitcore-lib dependency:

var p2p     = require('bitcore-p2p');                           //p2p exports
var p2pMod  = require.cache[require.resolve('bitcore-p2p')];    //p2p module
var bitcore = p2pMod.require('bitcore-lib');                    //p2p/bitcore-lib exports

This works but clearly if you were to require say, the version 0.16.0 bitcore-lib then I would ordinarily want to make that a direct dependency of my project and then run into trouble

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