Trending questions in Blockchain

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1 answer

How to receive JSON object via POST method?

You need to decode it with json_decode() like this $json ...READ MORE

Aug 28, 2018 in Blockchain by slayer
 • 29,370 points • 868 views
0 votes
1 answer

Base58 encoding in ruby?

Seems like a hexadecimal number is stuck ...READ MORE

Aug 22, 2018 in Blockchain by digger
 • 26,740 points • 1,125 views
0 votes
1 answer

Bitcoin pool mining using stratum

JSON string shouldn't have any spaces. So ...READ MORE

Aug 20, 2018 in Blockchain by digger
 • 26,740 points • 1,212 views
0 votes
1 answer

Issue in running Corda as a service

There are a few issues with the ...READ MORE

Aug 28, 2018 in Blockchain by Johnathon
 • 9,090 points • 886 views
0 votes
1 answer

Bitcoin sendfrom does not process transaction

Try this; $wammount = floatval(trim($_POST['wammount'])); READ MORE

Sep 3, 2018 in Blockchain by digger
 • 26,740 points • 599 views
0 votes
1 answer

How to get amount of bitcoins in php?

I’ve tried this code and it works: <?php function ...READ MORE

Aug 24, 2018 in Blockchain by slayer
 • 29,370 points • 1,029 views
0 votes
1 answer

How to generate coin address using bitcoin-ruby?

The only difference between the addresses is ...READ MORE

Aug 29, 2018 in Blockchain by slayer
 • 29,370 points • 803 views
+1 vote
1 answer

How to generate Bitcoin address?

Convert the hex string back to bytes ...READ MORE

Aug 20, 2018 in Blockchain by slayer
 • 29,370 points • 1,151 views
0 votes
1 answer

Different unicode versions on various devices

Apparently this is not possible since you ...READ MORE

Aug 29, 2018 in Blockchain by Christine
 • 15,790 points • 825 views
0 votes
1 answer

Can not find sayText method in QtBitcoinTrader

You've not added the ApplicationServices and CoreFoundation frameworks to your build, ...READ MORE

Aug 30, 2018 in Blockchain by slayer
 • 29,370 points • 755 views
0 votes
1 answer

what is the latest block chain development and top players with this tech, such as Digital Asset Holdings ?

The blockchain technology still has a few ...READ MORE

Sep 5, 2018 in Blockchain by Christine
 • 15,790 points • 488 views
0 votes
1 answer

Hyperledger error while installing binaries

This seems like a problem with the ...READ MORE

Aug 9, 2018 in Blockchain by digger
 • 26,740 points • 1,650 views
0 votes
1 answer

Truffle Error: Migrations contract constructor expected

You are not using constructor() public { ...READ MORE

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 1,604 views
0 votes
1 answer

Fatal error while installing web3 node.

Try to add git config by executing ...READ MORE

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 1,592 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 • 1,216 views
0 votes
1 answer

Hyperledger Blockchain Explorer “'Error: no test specified' ” error

You have run the npm install command ...READ MORE

Aug 9, 2018 in Blockchain by digger
 • 26,740 points • 1,633 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 • 1,098 views
0 votes
1 answer

OpenSSL i2o_ECPublicKey not working

When your right something in the buffer, ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 1,258 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 • 758 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 • 625 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 • 1,003 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 • 949 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 • 1,333 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 • 606 views
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 • 730 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 • 2,556 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 • 545 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 • 1,008 views
+4 votes
4 answers

How does the blockchain verification process work?

First of all, when someone creates a ...READ MORE

Mar 26, 2018 in Blockchain by Perry
 • 17,100 points • 2,762 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 • 841 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 • 664 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 • 925 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 • 660 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 • 1,478 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 • 771 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 • 2,428 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 • 1,458 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 • 521 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 • 632 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 • 1,678 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 • 469 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 • 806 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 • 1,056 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 • 1,052 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 • 1,385 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 • 1,984 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 • 899 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 • 3,147 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 • 1,314 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 • 1,974 views
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