Most viewed questions in Blockchain

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Blockchain implementation

It solely depends on the objective of ...READ MORE

Mar 24, 2022 in Blockchain by Rahul
• 9,690 points
889 views
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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
889 views
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1 answer

Problems using system() commands under Windows

You need to have double \ for ...READ MORE

Sep 5, 2018 in Blockchain by digger
• 26,740 points
887 views
0 votes
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How to run multichain with no permissions?

Multichain by default runs on multichain protocol. ...READ MORE

Mar 1, 2019 in Blockchain by Omkar
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886 views
–1 vote
1 answer

Latest block number in Bitcoin

You can get the current block number ...READ MORE

Jan 7, 2019 in Blockchain by Omkar
• 69,180 points
886 views
0 votes
1 answer

Cant initialization project in truffle

Try this: truffle unbox webpack READ MORE

Nov 30, 2018 in Blockchain by Omkar
• 69,180 points
885 views
0 votes
1 answer

How connect library to smart contract from external resources?

pragma solidity ^0.4.0; import "github.com/OpenZeppelin/zeppelin-solidity/contracts/math/SafeMath.sol"; contract MathExtended { ...READ MORE

Sep 26, 2018 in Blockchain by digger
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883 views
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Google API post request to IBM blockchain error

You have specified query as parameter to method and function but if you ...READ MORE

Sep 14, 2018 in Blockchain by digger
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883 views
0 votes
1 answer

Basic pusher connection to cryptsy using javascript

Try this <script src="//js.pusher.com/2.2/pusher.min.js" type="text/javascript"></script> <script type="text/javascript"> var pusher = ...READ MORE

Sep 11, 2018 in Blockchain by slayer
• 29,370 points
881 views
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1 answer

In-App Purchase vs. support developer with bitcoin

Not only do I think this will ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,730 points
880 views
0 votes
1 answer

BITCOIN TO USD API

You can use blockchain.info API: URL: https://blockchain.info/ticker Response: { "USD" : ...READ MORE

Apr 6, 2022 in Blockchain by Aditya
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880 views
0 votes
1 answer

I need all Ethereum smart contracts

Have a look at EIP165. It allows you ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
879 views
0 votes
1 answer

How to set bitcoin reward less than 1 coin?

Coin is defined here: https://github.com/bitcoin/bitcoin/blob/master/src/amount.h#L16 static const CAmount COIN ...READ MORE

Aug 22, 2018 in Blockchain by digger
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878 views
0 votes
1 answer

Hyperledger fabric: vagrant up in devenv fails

This is a problem with vagrant 1.9.3: You ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
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877 views
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How to use mutual authentication without CA in hyperledger fabric

I want to use some certificateless mutual ...READ MORE

Jul 29, 2019 in Blockchain by behnaz
• 120 points
876 views
0 votes
1 answer

Webpack destroying code in production.

The problem is that Uglify mangles too ...READ MORE

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

How can I verify my bitcoin transaction independently?

Transactions are first, verified by the miners, and ...READ MORE

Apr 8, 2022 in Blockchain by Rahul
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875 views
0 votes
1 answer

how Localbitcoins and other bitcoin wallet able to send/receive without network fee

Organizations that offer online wallets aren't obligated ...READ MORE

Mar 31, 2022 in Blockchain by Rahul
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875 views
0 votes
1 answer

How are the ethers sent to smart contract in the IBM example?

They are in magical variable msg. The function ...READ MORE

Sep 28, 2018 in Blockchain by digger
• 26,740 points
873 views
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How to delete an image saved in IPFS blockchain?

I am working on a blockchain based ...READ MORE

Mar 4, 2022 in Blockchain by Soham
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869 views
0 votes
1 answer

PHP. Bitcoin to Ukrainian Hrivna price ticker

I would suggest, that instead of dividing ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
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868 views
0 votes
0 answers

Blake2b-512 with ED25519 in PHP with NanoSalt library (Nano Crypto)

I have been trying to generate a Nano ...READ MORE

Mar 4, 2022 in Blockchain by Soham
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868 views
0 votes
1 answer

Bitcoin Price that updates in specific Seconds

The better way to do so is ...READ MORE

Feb 28, 2022 in Blockchain by Soham
• 9,730 points
867 views
0 votes
1 answer

Blockchain/decentralized apps development intro

If you are looking for books. If ...READ MORE

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

Hyperledger composer: network start gives no output

You are using -v as your option ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
• 69,180 points
865 views
0 votes
1 answer

In a non-cryptocurrency implementation of Blockchain, how to successfully mine a node?

Difficulty is a property of the blockchain, ...READ MORE

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

how to modify smart contract template for self defined functionality

TL;DR; This code simply defines the start ...READ MORE

Aug 1, 2018 in Blockchain by aryya
• 7,460 points
855 views
+1 vote
1 answer

truffle compile

Try running the truffle commands as root. ...READ MORE

May 9, 2019 in Blockchain by Omkar
• 69,180 points
854 views
0 votes
1 answer

understanding cryptocoins mining profit calculation

 The problem is that the miner you ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,690 points
853 views
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What is the difference between Amazon managed Blockchain and Amazon Blockchain Templates?

I am a beginner in Blockchain and ...READ MORE

Apr 4, 2022 in Blockchain by Rahul
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853 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
• 15,750 points
852 views
0 votes
1 answer

Bluemix Blockchain

To answer your doubt, the  "starter network" ...READ MORE

Apr 6, 2022 in Blockchain by Aditya
• 7,680 points
851 views
0 votes
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how can i add more than one node to mining blocks ??

i created 6 nodes whit one node ...READ MORE

Apr 12, 2020 in Blockchain by Hicham
• 120 points
851 views
+1 vote
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0 answers
0 votes
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IBM Cloud - Blockchain platform | Problem creating MSP definition

I have found a solution by doing ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
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842 views
0 votes
1 answer

Why do we not use Istanbul Byzantine Fault Tolerance (IBFT) in Public Blockchains?

The use of the IBFT consensus involves ...READ MORE

Mar 24, 2022 in Blockchain by Rahul
• 9,690 points
840 views
0 votes
1 answer

Mining in private net: Balance not increasing

Use this command to start miner: miner.start() To stop ...READ MORE

Oct 24, 2018 in Blockchain by Omkar
• 69,180 points
838 views
0 votes
1 answer

Hyperledger error-installation error

Hey, there is a thread for the ...READ MORE

Apr 5, 2019 in Blockchain by Omkar
• 69,180 points
834 views
0 votes
1 answer

Can we create a hyperledger fabric with peers from different platforms?

Yes, it is possible. Peers from different ...READ MORE

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

Ethereum Advance token sample

Using > instead of >= is a ...READ MORE

Nov 2, 2018 in Blockchain by Christine
• 15,750 points
833 views
0 votes
1 answer

How do i add images in hyperledger?

In your registry, you can Base64-ify your ...READ MORE

Aug 21, 2018 in Blockchain by Perry
• 17,100 points
833 views
+1 vote
1 answer

Does deploying a contract mean create a new block in blockchain?

Does deploying a contract mean creating a ...READ MORE

Mar 31, 2022 in Blockchain by Rahul
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826 views
0 votes
1 answer

Currency Conversion using PHP

 An example of converting EUR to USD ...READ MORE

Mar 24, 2022 in Blockchain by Rahul
• 9,690 points
825 views
0 votes
1 answer

Transfer the gas value of contract to my own address

Works fine for me: pragma solidity ^0.4.0; contract Test ...READ MORE

Oct 10, 2018 in Blockchain by Omkar
• 69,180 points
823 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
822 views
0 votes
1 answer

What is blockchain and Ethereum? Where is it used?

A blockchain is an immutable, sequential chain of ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
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820 views
0 votes
0 answers
0 votes
0 answers

What will happen to the transactions with unconsumed states when modified contract is integrated in the network?

I have build a CorDapp using "Yo!CorDapp" ...READ MORE

May 23, 2019 in Blockchain by Sriram
• 160 points
818 views
0 votes
1 answer

Access variables through auto-generated getters from a different contract

You just need to pass it in ...READ MORE

Oct 3, 2018 in Blockchain by slayer
• 29,370 points
818 views