Trending questions in Blockchain

0 votes
2 answers

Coinbase button creation and callback

You can use the following code for generating ...READ MORE

Sep 3, 2018 in Blockchain by Nitika
 • 2,616 views
0 votes
1 answer

How do you obtain the transaction uuid after submitting an invoke transaction using the nodejs HFC

The results returned via the 'submitted' event ...READ MORE

Sep 14, 2018 in Blockchain by slayer
 • 29,370 points • 2,117 views
0 votes
1 answer

How to make POST request on C# to blockr.io

By default UploadValues doesn't format the data ...READ MORE

Aug 30, 2018 in Blockchain by digger
 • 26,740 points • 2,753 views
+1 vote
1 answer

Protocols used in a distributed/dlt system for the nodes to establish communication

yes all are over TCP/IP connections secured ...READ MORE

Aug 6, 2018 in Blockchain by aryya
 • 7,460 points • 3,748 views
0 votes
1 answer

How to generate new address for blockchain wallet?

You can use the following to generate ...READ MORE

Jul 16, 2018 in Blockchain by digger
 • 26,740 points • 4,693 views
0 votes
1 answer

coin.mx : 403 forbidden error on my web request

I was having the same issue and ...READ MORE

Sep 11, 2018 in Blockchain by digger
 • 26,740 points • 2,231 views
0 votes
1 answer

Generating Bitcoin addresses from a xpubkey

var pubkey = ExtPubKey.Parse("xpub6CUGRUonZSQ4TWtTMmzXdrXDtypWKiKrhko4egpiMZbpiaQL2jkwSB1icqYh2cfDfVxdx4df189oLKnC5fSwqPfgyP3hooxujYzAu3fDVmz"); var newAddress = pubkey.Derive(0).Derive(0).PubKey.GetAddress(Network.Main); Console.WriteLine(newAddress); It ...READ MORE

Aug 21, 2018 in Blockchain by slayer
 • 29,370 points • 3,133 views
0 votes
1 answer

Hyperledger Fabric peer command not found error.

This error occurs when the system can ...READ MORE

Jul 2, 2018 in Blockchain by Omkar
 • 69,180 points • 5,281 views
0 votes
0 answers

How to send Bitcoins with node.js?

I am trying to make a web ...READ MORE

Jul 20, 2018 in Blockchain by sabby
 • 4,370 points • 4,544 views
0 votes
1 answer

How to connect to already running go ethereum client using mist Ubuntu

Hey, you can solve the issue by using sudo ...READ MORE

Sep 18, 2018 in Blockchain by digger
 • 26,740 points • 1,911 views
0 votes
1 answer

How to get iota balance via api url?

Either run your own node (thus, the localhost reference ...READ MORE

Sep 12, 2018 in Blockchain by digger
 • 26,740 points • 2,168 views
0 votes
1 answer

Cannot download fabric-sdk-go.

This happens and I know how frustrating ...READ MORE

Sep 18, 2018 in Blockchain by digger
 • 26,740 points • 1,901 views
0 votes
1 answer

Javascript mBTC to BTC conversion not working

At the beginning of bitcoinConversion() you have: if (currentUnit != ...READ MORE

Sep 5, 2018 in Blockchain by slayer
 • 29,370 points • 2,450 views
+1 vote
1 answer

Ethereum vs Hyperledger: Which is better for business networks?

Hyperledger is preferred for B2B business and ...READ MORE

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 1,759 views
0 votes
1 answer

How to decrypt result of query when using the Hyperledger Client SDK for Node.js

In this case, it is just a ...READ MORE

Sep 18, 2018 in Blockchain by slayer
 • 29,370 points • 1,863 views
0 votes
2 answers

Saving a string in python associated with an API

You can create a list and add ...READ MORE

Sep 10, 2018 in Blockchain by Joy
 • 2,167 views
0 votes
1 answer

Not able to run chaincode locally using docker

Looks like the Fabric team introduced "nopkcs11" ...READ MORE

Sep 18, 2018 in Blockchain by slayer
 • 29,370 points • 1,856 views
0 votes
1 answer

SHA256 does not give expected result.

You're hashing the string when you're supposed ...READ MORE

Aug 24, 2018 in Blockchain by digger
 • 26,740 points • 2,934 views
0 votes
1 answer

Hyperledger fabric node sdk deploy.js example failing

Have you installed couchdb? Install couchdb as ...READ MORE

Sep 17, 2018 in Blockchain by slayer
 • 29,370 points • 1,889 views
0 votes
1 answer

How to send JSON object from npm module to browser

A simple solution for this would be ...READ MORE

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 1,753 views
0 votes
1 answer

Solidity difference array with and without new keyword.

Creating arrays with variable length in memory ...READ MORE

Aug 16, 2018 in Blockchain by digger
 • 26,740 points • 3,263 views
0 votes
1 answer

How to solve “More than one instance of bitcore-lib found” error?

There is a temp solution here. ~/bitcore-explorers/node_modules/bitcore-lib/index.js line 7: bitcore.versionGuard ...READ MORE

Jul 25, 2018 in Blockchain by slayer
 • 29,370 points • 4,210 views
+1 vote
1 answer

Unable to convert variable to GMP when initializing Bitpay client class (Laravel)

Bitpay automatically uses the encrypted file store, ...READ MORE

Sep 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,139 views
0 votes
1 answer

Etheruem: Pyethereum Error

Try running this: sudo easy_install -U setuptools In my ...READ MORE

Sep 28, 2018 in Blockchain by digger
 • 26,740 points • 1,389 views
0 votes
1 answer

client_id in Bitstamp's API

You can use this Ruby code: require 'open-uri' require ...READ MORE

Sep 3, 2018 in Blockchain by digger
 • 26,740 points • 2,463 views
0 votes
1 answer

How to get the number of tokens in the Bitcoin network?

This information can easily be calculated by ...READ MORE

Aug 31, 2018 in Blockchain by Christine
 • 15,750 points • 2,576 views
0 votes
1 answer

Litecoin/Bitcoin how divide uint256 target value on difficulty in C++

This is the solution: void setdouble(double val) { ...READ MORE

Sep 12, 2018 in Blockchain by digger
 • 26,740 points • 2,057 views
0 votes
1 answer

Bitcoin private key: translate from bash to perl

use bignum; # Get arbitrary precision arithmetic # ...READ MORE

Sep 4, 2018 in Blockchain by slayer
 • 29,370 points • 2,397 views
0 votes
1 answer

How to get results by running the voting code on Ethereum?

In mist go to your contract and ...READ MORE

Sep 18, 2018 in Blockchain by digger
 • 26,740 points • 1,792 views
0 votes
1 answer

GDAX Heartbeat Channel: Failed to subscribe error

You to include "product_ids" : ["BTC-GBP"] as a field ...READ MORE

Sep 7, 2018 in Blockchain by digger
 • 26,740 points • 2,266 views
0 votes
1 answer

Why do people prefer mining Litecoin over Bitcoin?

The main reason people prefer mining Litecoin ...READ MORE

Sep 21, 2018 in Blockchain by slayer
 • 29,370 points • 1,652 views
0 votes
1 answer

How to Read multiple value from as JSON format from a external service and store in composer registry

Hey buddy,  this works: /** * Track temperatures ...READ MORE

Sep 19, 2018 in Blockchain by digger
 • 26,740 points • 1,732 views
0 votes
1 answer

Angular 4: not able to iterate over an array

Replace this : <div *ngFor="let price of prices"> ...READ MORE

Sep 3, 2018 in Blockchain by digger
 • 26,740 points • 2,421 views
0 votes
1 answer

How to resolve blockchain DNS using Python Requests?

You could use one of their publicly ...READ MORE

Aug 20, 2018 in Blockchain by Omkar
 • 69,180 points • 3,087 views
0 votes
2 answers

Truffle migrate gives “ Error: No network specified. ”

You have to mention on which network ...READ MORE

Aug 13, 2018 in Blockchain by Omkar
 • 69,180 points • 3,368 views
0 votes
1 answer

Vertically centering text in a div

Try this code: .smallUnitBox { ...READ MORE

Sep 3, 2018 in Blockchain by digger
 • 26,740 points • 2,390 views
0 votes
1 answer

How to get return value of external function?

You can do this. I have shared ...READ MORE

Aug 13, 2018 in Blockchain by digger
 • 26,740 points • 3,292 views
0 votes
1 answer

How to create channels in Hyperledger Sawtooth?

There are two features that I know ...READ MORE

Aug 9, 2018 in Blockchain by slayer
 • 29,370 points • 3,462 views
0 votes
1 answer

Python authenticated calls to bitfinex exchange

You should use byte type api_secret. api_secret = ...READ MORE

Sep 7, 2018 in Blockchain by slayer
 • 29,370 points • 2,206 views
0 votes
1 answer

Korbit api with python http.client

http.client.HTTPSConnection accepts hostname, not a url. conn = http.client.HTTPSConnection("api.korbit.co.kr", ...READ MORE

Aug 28, 2018 in Blockchain by digger
 • 26,740 points • 2,636 views
0 votes
1 answer

com.coinbase.api.exc­eption.UnauthorizedE­xception

Start by creating a new OAuth 2.0 ...READ MORE

Sep 5, 2018 in Blockchain by digger
 • 26,740 points • 2,286 views
0 votes
1 answer

python3 pip not working

The name of your package in PyPI ...READ MORE

Sep 4, 2018 in Blockchain by slayer
 • 29,370 points • 2,315 views
0 votes
1 answer

When trying to Start the membersrvc, its not responding!

You should start membersrvc at first in ...READ MORE

Sep 19, 2018 in Blockchain by Christine
 • 15,750 points • 1,666 views
0 votes
1 answer

Decorators in Hyperledger Composer Modeling Language

Define you CustomAsset like mentioned below and ...READ MORE

Sep 19, 2018 in Blockchain by slayer
 • 29,370 points • 1,661 views
0 votes
1 answer

Boost issue while building Litecoin

Try reinstalling boost (uninstall and install again), ...READ MORE

Sep 7, 2018 in Blockchain by slayer
 • 29,370 points • 2,176 views
0 votes
1 answer

PHP. Bitcoin to Ukrainian Hrivna price ticker

nstead of dividing the values - i ...READ MORE

Sep 11, 2018 in Blockchain by slayer
 • 29,370 points • 2,000 views
0 votes
1 answer

How to see bitcoin transaction info?

You can view foreign transactions using bitcoind. Set txindex=1 in ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 3,066 views
0 votes
1 answer

How to interact with smart contract in GO?

I am providing an example. Modify it ...READ MORE

Jul 26, 2018 in Blockchain by digger
 • 26,740 points • 4,016 views
0 votes
1 answer

Not getting correct result after SHA256

You have to: Hash with SHA-256 the public key: 0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6 Hash with RIPEMD-160 the ...READ MORE

Sep 11, 2018 in Blockchain by digger
 • 26,740 points • 1,979 views
0 votes
1 answer

Blockchain ToBTC API not returning Php variable

Seems like you have a syntax error ...READ MORE

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 1,555 views
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