Trending questions in Blockchain

0 votes
1 answer

Problem in QRL (Quantum Resistant Node) startup

There is an open issue in GitHub ...READ MORE

Aug 28, 2018 in Blockchain by Johnathon
 • 9,090 points • 953 views
0 votes
1 answer

Generating cryptocoin address.

30 in decimal will give you a ...READ MORE

Aug 23, 2018 in Blockchain by slayer
 • 29,370 points • 1,134 views
0 votes
1 answer

How to use bitcoin price as place holder in php?

You can do it by providing an ...READ MORE

Aug 21, 2018 in Blockchain by digger
 • 26,740 points • 1,209 views
0 votes
1 answer

Can I fork an existing blockchain?

You know it's important to realize what ...READ MORE

Aug 31, 2018 in Blockchain by Christine
 • 15,790 points • 804 views
0 votes
1 answer

How to create address in BitcoinLib.

Regarding this specific library and assuming that ...READ MORE

Aug 21, 2018 in Blockchain by digger
 • 26,740 points • 1,192 views
0 votes
1 answer

Problem installing bitcoin wallet in Ubuntu.

You install Bitcoind using the following commands: sudo ...READ MORE

Aug 22, 2018 in Blockchain by slayer
 • 29,370 points • 1,143 views
0 votes
1 answer

Cant connect Jsonrpc to bitcoin.

I tried the following code and it ...READ MORE

Aug 20, 2018 in Blockchain by digger
 • 26,740 points • 1,228 views
0 votes
1 answer

Cant make transactions in bitcoind.

Fist you should encrypt your wallet: bitcoin-cli encryptwallet ...READ MORE

Aug 23, 2018 in Blockchain by slayer
 • 29,370 points • 1,090 views
0 votes
1 answer

Creating bitcoin address in ruby

When you calculate the SHA256 checksum, make ...READ MORE

Aug 28, 2018 in Blockchain by slayer
 • 29,370 points • 869 views
0 votes
2 answers

Python syntax error because of version conflicts.

As mentioned in the reply to my ...READ MORE

Aug 13, 2018 in Blockchain by Omkar
 • 69,220 points • 1,474 views
0 votes
1 answer

How do I validate the presence of participant owner in Asset transfer transaction?

I found the exact solution and syntax.. ...READ MORE

Aug 9, 2018 in Blockchain by aryya
 • 7,460 points • 1,703 views
0 votes
1 answer

mingw32 set command not working

From standard cmd, the unquoted original works just ...READ MORE

Aug 31, 2018 in Blockchain by slayer
 • 29,370 points • 717 views
0 votes
1 answer

How to extract h160 address of bitcoin blockchain?

You can extract the data using the ...READ MORE

Jul 16, 2018 in Blockchain by digger
 • 26,740 points • 2,701 views
0 votes
1 answer

What is the difference between o and --> in Fabric Composer?

'o' indicates has-a relationship '-->' indicates pass by ...READ MORE

Aug 25, 2018 in Blockchain by Perry
 • 17,100 points • 1,001 views
0 votes
1 answer

How to retain the container state after shutdown/restart of Hyperledger Fabric network?

In a Dev environment, you can first ...READ MORE

Jul 17, 2018 in Blockchain by slayer
 • 29,370 points • 2,657 views
0 votes
1 answer

Bitcoind server connection problem

Be sure to allow your server ip ...READ MORE

Aug 23, 2018 in Blockchain by digger
 • 26,740 points • 1,049 views
0 votes
1 answer

How to control bitcoind from another machine?

In your bitcoin.config file replace rpcallowip with ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 1,290 views
0 votes
1 answer

How to install Magento Bitcoin Currency extension on linux box?

Follow these steps to install it: Copy files ...READ MORE

Aug 17, 2018 in Blockchain by slayer
 • 29,370 points • 1,288 views
0 votes
1 answer

Error while generating smart contracts which returns array of struct in Web3j v3.3.1

Solidity does not support returning structs in ...READ MORE

Jul 26, 2018 in Blockchain by Perry
 • 17,100 points • 2,227 views
0 votes
1 answer

How to call smart contract methods from transactions?

You can do this using a wrapper. ...READ MORE

Aug 13, 2018 in Blockchain by slayer
 • 29,370 points • 1,445 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 • 1,704 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 • 1,557 views
0 votes
1 answer

How to solve “Package 'ethereum' has no installation candidate” error?

This error might have occurred because your ...READ MORE

Aug 8, 2018 in Blockchain by slayer
 • 29,370 points • 1,653 views
0 votes
1 answer

REQUEST_TIMEOUT error in Hyperledger Fabric, Linux

My docker version was 1.7. And its ...READ MORE

Jul 6, 2018 in Blockchain by Christine
 • 15,790 points • 3,062 views
0 votes
1 answer

BitcoinJ instance shutting down before transaction confirmation

Instead of attaching to an individual transaction ...READ MORE

Aug 31, 2018 in Blockchain by Christine
 • 15,790 points • 633 views
+1 vote
1 answer

How to write an ERC 721 contract?

You could go through the following links:  https://github ...READ MORE

Jun 28, 2018 in Blockchain by Perry
 • 17,100 points • 3,354 views
0 votes
1 answer

Difference between Fabric Composer and Hyperledger Composer?

They are basically the same thing. Fabric ...READ MORE

Aug 9, 2018 in Blockchain by digger
 • 26,740 points • 1,576 views
+4 votes
2 answers

I am unable to connect Ganache with Truffle/Npm Dev server. Pls help.

The issue is at CurrentProvider. Give the url ...READ MORE

Mar 26, 2018 in Blockchain by Perry
 • 17,100 points
edited Oct 11, 2018 by Omkar • 2,928 views
0 votes
1 answer

Real time refreshing app using Angular2

You can use client side normal polling. ...READ MORE

Aug 27, 2018 in Blockchain by digger
 • 26,740 points • 772 views
+4 votes
2 answers

How do I create a new block in Hyperledger Fabric?

This link might help you: https://github.com/hyperledger/fabric-sample ...READ MORE

Oct 11, 2018 in Blockchain by Sahu
 • 2,919 views
0 votes
1 answer

Comparing hex representation of 2 BigIntegers

You can compare two sequences of equal ...READ MORE

Aug 27, 2018 in Blockchain by digger
 • 26,740 points • 754 views
0 votes
1 answer

How to use Proc/lamba returned from a method in Ruby?

You need to remove the colon: list.select(&valid_transaction) The & ...READ MORE

Aug 24, 2018 in Blockchain by digger
 • 26,740 points • 887 views
0 votes
1 answer

Sending keep-alive packet, bitcoin.

You can use Websocket Eventmachine Client (https://github.com/imanel/websocket-eventmachine-client) gem to ...READ MORE

Aug 20, 2018 in Blockchain by digger
 • 26,740 points • 1,055 views
0 votes
1 answer

Bitcoinjs browser compile creates an empty file

Try the following: Create index.js with the ...READ MORE

Aug 30, 2018 in Blockchain by digger
 • 26,740 points • 617 views
0 votes
1 answer

“Error getting chaincode package bytes” when deploying chaincode on hyperledger via REST

Considering that you are playing with Bluemix ...READ MORE

Aug 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,782 views
0 votes
1 answer

sendProposal - timed out after:45000, sendPeersProposal - Promise is rejected: Error: REQUEST_TIMEOUT

You could simply replace --net=bridge with --net=artifacts_default in your DockerFile.  I used ...READ MORE

Jul 26, 2018 in Blockchain by Perry
 • 17,100 points • 2,128 views
0 votes
1 answer

How to add Bitcoin as currency for my website?

You cannot use BTC as the currency ...READ MORE

Aug 17, 2018 in Blockchain by slayer
 • 29,370 points • 1,168 views
+1 vote
1 answer

How to perform a simple 1-to-1 Bitcoin Transaction with Bitcore?

What is the argument utxos int the ...READ MORE

Jul 20, 2018 in Blockchain by charlie_brown
 • 7,720 points • 2,332 views
0 votes
1 answer

How to configure diverse workloads and tasks?

Golem appears to be in early stages of ...READ MORE

Aug 28, 2018 in Blockchain by Johnathon
 • 9,090 points • 716 views
0 votes
1 answer

How to parse Json data from remote server?

Yes, you can do it use the ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 1,154 views
0 votes
1 answer

How to use Blockchain receive API without exchange rate?

Your code contains the amount in USD ...READ MORE

Aug 21, 2018 in Blockchain by Perry
 • 17,100 points • 1,082 views
0 votes
1 answer

Not able to build bitcoind on mac.

You have to install pkg-config before running ...READ MORE

Aug 23, 2018 in Blockchain by slayer
 • 29,370 points • 890 views
0 votes
1 answer

How to extract Ethereum Blockchain data?

You are using web3.eth.getTransaction(txHash) web3.eth.getTransaction(txHash) will only return info ...READ MORE

Jul 30, 2018 in Blockchain by slayer
 • 29,370 points • 1,944 views
0 votes
1 answer

Getting error while building Bitcoind on MAC OS

First of all try building a non-GUI ...READ MORE

Aug 20, 2018 in Blockchain by slayer
 • 29,370 points • 1,009 views
0 votes
1 answer

How to get current value of bitcoin?

You can use json_decode to transform it ...READ MORE

Aug 20, 2018 in Blockchain by digger
 • 26,740 points • 1,003 views
0 votes
1 answer

MtGox Gem Failing to Login

Try using a smaller nonce for v1 ...READ MORE

Aug 31, 2018 in Blockchain by slayer
 • 29,370 points • 527 views
0 votes
1 answer

Can’t find value for key while using CouchDB for Fabric.

In the output you have mentioned: {   "id": ...READ MORE

Jul 31, 2018 in Blockchain by slayer
 • 29,370 points • 1,860 views
0 votes
1 answer

How to solve Yobit API connection 503 server error?

Try to use "https://www.yobit.net/api/3/info" URL Instead of ...READ MORE

Aug 21, 2018 in Blockchain by slayer
 • 29,370 points • 954 views
0 votes
0 answers

How do I identify invoking peer/organisation inside Hyperledger Fabric V1.0 chaincode?

Is there any way to know the ...READ MORE

Aug 23, 2018 in Blockchain by Christine
 • 15,790 points • 933 views
0 votes
1 answer

What are the differences between chain and state database in hyperledger fabric?

There are two place which "store" data ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
 • 10,400 points • 2,709 views
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