Most viewed questions in Blockchain

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Blockchain: Installing an earlier version of ethereum using apt-get on

geth does not make the previous version available ...READ MORE

Oct 10, 2018 in Blockchain by Omkar
• 69,190 points
800 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
• 29,350 points
800 views
0 votes
1 answer

How to solve “ERROR: manifest for hyperledger/fabric-couchdb:latest not found” error?

This seems to be a problem with ...READ MORE

Jul 31, 2018 in Blockchain by digger
• 26,740 points
795 views
0 votes
1 answer
0 votes
1 answer

What is the maximum number of nodes in corda?

No, there is no restriction of he ...READ MORE

Jul 11, 2018 in Blockchain by slayer
• 29,350 points
789 views
0 votes
1 answer

Hyperledger Fabric: make peer make: *** No rule to make target `peer'. Stop

The makefile is in /opt/gopath/src/github.com/hyperledger/fabric , not ...READ MORE

Nov 15, 2018 in Blockchain by Omkar
• 69,190 points
784 views
0 votes
1 answer

How to interact with blockchain using Java web app?

You can interact with the blockchain using ...READ MORE

Jul 16, 2018 in Blockchain by digger
• 26,740 points
784 views
+1 vote
2 answers

How do I access the api generated by hyperledger composer publicly?

IBM Bluemix is a platform that provides ...READ MORE

Jul 5, 2018 in Blockchain by slayer
• 29,350 points
784 views
0 votes
1 answer

bitcoin to currency converter and it's reverse in php

Ok, you can get the value by ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
783 views
0 votes
0 answers

Migrations ran out of gas

I have unboxed pet-shop. Then inside the ...READ MORE

Jun 25, 2019 in Blockchain by anonymous
781 views
0 votes
1 answer

Not able to execute fabcar demo in Hyperledger

This can be solved by deleting directory ...READ MORE

Jul 24, 2018 in Blockchain by charlie_brown
• 7,720 points
781 views
0 votes
1 answer

Why do bitcoin uses UTXO model? What are the advantages UTXO mechanism provides out of the box?

Bitcoin nodes maintain a set of all ...READ MORE

Mar 31, 2022 in Blockchain by Rahul
• 9,670 points
780 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
780 views
0 votes
1 answer

Hyperledger: How to test endorsement policy for the business network in multiple organizations?

Give the proposal responses you are receiving ...READ MORE

Jul 13, 2018 in Blockchain by Perry
• 17,100 points
780 views
0 votes
1 answer

Does a hyperledger fabric application client need to connect to all peers?

No, it is not necessary to connect ...READ MORE

Jan 31, 2019 in Blockchain by Omkar
• 69,190 points
778 views
0 votes
1 answer

Unboxing truffle: Shows error: Stopping to prevent overwriting data.

As mentioned in the error: unboxing or ...READ MORE

Dec 1, 2018 in Blockchain by Omkar
• 69,190 points
778 views
0 votes
1 answer

What is the expiry time of blockchain wallet address?

There is no expiry time for your ...READ MORE

Jul 26, 2018 in Blockchain by slayer
• 29,350 points
777 views
0 votes
1 answer

How Bitcoin wallet find unspent transaction output(UTXOs)?

The wallet apps are connected to the ...READ MORE

May 22, 2018 in Blockchain by Shashank
• 10,400 points
777 views
0 votes
1 answer

Not able to migrate contract in Truffle: Error: No network specified. Cannot determine current network

Make these entries in truffle.js file: module.exports = { ...READ MORE

Nov 30, 2018 in Blockchain by Omkar
• 69,190 points
776 views
0 votes
1 answer

Problem while compiling BitcoinJS for browser

The problem iss that you are using browserify wrong ...READ MORE

Aug 30, 2018 in Blockchain by digger
• 26,740 points
776 views
0 votes
1 answer

How do I use hyperledger fabric blockchain to build my own application?

To use fabric I would recommend you ...READ MORE

May 17, 2018 in Blockchain by Johnathon
• 9,090 points
776 views
0 votes
1 answer

Hyperledger Fabric: How to ping network using program?

// http://nodejs.org/api.html#_child_processes var sys = require('sys') var exec = ...READ MORE

Nov 9, 2018 in Blockchain by Omkar
• 69,190 points
774 views
+2 votes
1 answer

Issue in Initialising the Blockchain

Hi, I am also getting the same ...READ MORE

Sep 17, 2020 in Blockchain by Edureka
• 200 points

reshown Sep 17, 2020 by Gitika 773 views
0 votes
1 answer

How do i deploy a contract using bigchainDB?

Currently BigchainDB v.1.0.0 does not support Smart ...READ MORE

Jun 30, 2018 in Blockchain by Shashank
• 10,400 points
773 views
0 votes
1 answer

Hyperledger Composer: Failed to load connector module “composer-connector-undefined” for connection type “undefined”

Hey. First, make sure that you are extending ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
• 69,190 points
771 views
+1 vote
1 answer

while I am hitting servies in node js in hyperledger fabric 2.0 I am getting issues like Invalid common connection profile due to missing configuration data

Hey, @Harinishree, With error "Invalid network configuration due ...READ MORE

May 14, 2020 in Blockchain by Gitika
• 65,910 points
769 views
0 votes
1 answer

How to explore and analyze the data inside a Hyperledger Blockchain network?

In Hyperledger Composer, you have all the ...READ MORE

Aug 10, 2018 in Blockchain by Christine
• 15,790 points
768 views
0 votes
1 answer

Getting Bitcoin address from pubkey_hash

The unexpected result is due to encoding. For ...READ MORE

Aug 22, 2018 in Blockchain by digger
• 26,740 points
765 views
0 votes
1 answer

Cant Decode Bitcoin Base58 address to byte array

In your for-loop: for (int k = b256.Length ...READ MORE

Aug 21, 2018 in Blockchain by digger
• 26,740 points
761 views
0 votes
1 answer

In hyperledger, how many number of ordering node can take up a transaction?

There are two types to implement ordering: 1. ...READ MORE

Jun 25, 2018 in Blockchain by Omkar
• 69,190 points

edited Jun 28, 2018 by Omkar 761 views
0 votes
1 answer

Mining on private Ethereum blockchain

You control how miners work on your ...READ MORE

Jul 25, 2018 in Blockchain by Johnathon
• 9,090 points
760 views
0 votes
1 answer

How to check payment in Blockchain.info wallet?

The above error is probably occurring due ...READ MORE

Aug 21, 2018 in Blockchain by Perry
• 17,100 points
758 views
0 votes
1 answer

How to transact custom token instead of ethers using JSON rpc?

First create your custom token. Then develop ...READ MORE

Jul 10, 2018 in Blockchain by digger
• 26,740 points
758 views
0 votes
1 answer

How to check Bitcoin Wallet ?

This can be done using Extended Public ...READ MORE

Jul 13, 2018 in Blockchain by Perry
• 17,100 points
754 views
+1 vote
1 answer

How to decide on a nonce while developing a blockchain?

A nonce should be decided on the ...READ MORE

Apr 10, 2018 in Blockchain by Shashank
• 10,400 points
754 views
0 votes
1 answer

How is the ledger kept consistent among differnt peers in blockchain?

Bitcoin doesn't guarantee that all ledgers become ...READ MORE

May 26, 2018 in Blockchain by Johnathon
• 9,090 points
753 views
+3 votes
2 answers

How to run ethereumjs using Node.JS

You need to install testrpc globally on ...READ MORE

Mar 27, 2018 in Blockchain by ned_crew
• 1,610 points
753 views
0 votes
1 answer

Hyperledher: How to convert formControlName value to JSON Format?

<textarea [ngModel]="offers[0] | json" formControlName="offers" class="form- ...READ MORE

Nov 12, 2018 in Blockchain by Omkar
• 69,190 points
752 views
0 votes
1 answer

How to install v1.7.3. of Geth using ppa?

geth package version v1.7.3 is only available on ubuntu zestyplatform i.e. ubuntu ...READ MORE

Oct 17, 2018 in Blockchain by Christine
• 15,790 points
752 views
0 votes
1 answer

blockchain/service-my-wallet-v3 - Connection refused

Hey, if you have installed blockchain/service-my-wallet properly, ...READ MORE

Sep 18, 2018 in Blockchain by slayer
• 29,350 points
751 views
0 votes
0 answers

how to Build Bitcoin address and balance database?

How to build Bitcoin Address and Balance ...READ MORE

Jul 25, 2019 in Blockchain by Raj
• 180 points
750 views
0 votes
2 answers

How to read CGMiner output?

the only thing that made it work ...READ MORE

Sep 17, 2018 in Blockchain by Ruby
750 views
+1 vote
2 answers

Challenge while setting up Hyperledger Fabric 1.0 in Ubuntu 16.04

The rocksdb error you're seeing wouldn't be ...READ MORE

Mar 27, 2018 in Blockchain by ned_crew
• 1,610 points

edited Jun 8, 2020 by Sirajul 750 views
0 votes
1 answer

Stratum connection for bitcoin pool mining

After hours of tinkering around I have ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
749 views
0 votes
1 answer

Unable to perform an operation in Ethereum private network

It seems that the Unix socket can't ...READ MORE

Jul 31, 2018 in Blockchain by Shashank
• 10,400 points
748 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
• 29,350 points
747 views
0 votes
1 answer

How to get historic Bitcoin Price Index using coinbase or any other open source API?

I would recommend you to use the ...READ MORE

Apr 7, 2022 in Blockchain by Rahul
• 9,670 points
745 views
0 votes
2 answers

Warning: Using contract member “balance” inherited from the address type is deprecated. Solidity

Alternatively you could assign this to a local variable ...READ MORE

Oct 3, 2018 in Blockchain by Rustom
745 views
0 votes
1 answer

Hyperledger Fabric blockchain network from scratch

Try playing with configtx.yaml, crypto-config.yaml and docker-compose ...READ MORE

Apr 11, 2022 in Blockchain by Soham
• 9,700 points
744 views
+1 vote
1 answer

How is a smart contract stored on a Blockchain?

Smart contract template and transaction events are ...READ MORE

Apr 4, 2018 in Blockchain by Christine
• 15,790 points
743 views