Recent questions tagged blockchain

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How can merkle trees help validate the content of a block in a blockchain

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 1,069 views
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1 answer

JAVA Retrive current bitcoin price with JSON

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 1,074 views
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Know which exchange or wallet is behind a BTC address?

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 6,229 views
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Crypto Currency ICO process

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 595 views
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Get amount of Bitcoins at an address with PHP

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 536 views
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(bitcoin) Calculate hash from getwork function - how to do it?

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 763 views
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Bitcoin Price that updates in specific Seconds

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 615 views
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1 answer

Bitcoin Core on external SSD in OS X

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 1,464 views
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SHA256 Hash doesn't match the one listed on Bitcoin Wiki

Feb 28, 2022 in Blockchain by Aditya
 • 7,680 points • 806 views
+1 vote
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Is it possible to store images on the Ethereum blockchain?

Feb 24, 2022 in Blockchain by Soham
 • 9,710 points • 1,954 views
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1 answer

On-Chain NFT: How to store a pixel image on the ethereum blockchain?

Feb 24, 2022 in Blockchain by Soham
 • 9,710 points • 1,177 views
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Blockchain tutorials for double spending and signature verification

Feb 24, 2022 in Blockchain by Soham
 • 9,710 points • 695 views
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What is a decentralized-distributed system? Why Blockchain is decentralized-distributed system?

Feb 24, 2022 in Blockchain by Soham
 • 9,710 points • 684 views
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nodemon command is not recognized in terminal for node js server

Feb 17, 2022 in Java by Rahul
 • 9,680 points • 8,929 views
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1 answer

sudo: npm: command not found

Feb 17, 2022 in Others by Soham
 • 9,710 points • 5,177 views
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1 answer

Start script missing error when running npm start

Feb 10, 2022 in Java by Rahul
 • 9,680 points • 4,498 views
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'npm' is not recognized as internal or external command, operable program or batch file

Feb 10, 2022 in Others by Soham
 • 9,710 points • 11,779 views
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Blockchain Development Company

Feb 7, 2022 in Blockchain by Olivia
 • 120 points • 337 views
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I'm setting up new Ansible control node, I need initial steps, to get server access (password less, DB with password access), from Ansible control node.

Oct 4, 2021 in Ansible by anonymous
 • 140 points • 3,975 views
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1 answer

capture an event issued by a smart contract and make a web request

Dec 29, 2020 in Blockchain by anonymous
 • 120 points • 793 views
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Node js nodemiler Status 250 ok but mail is not received

Dec 24, 2020 in Web Development by Sagar
 • 180 points • 4,210 views
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1 answer

How to deploy Hyperledger-fabric V2.0 with SDK using kubernetes

Dec 18, 2020 in Blockchain by anonymous
 • 170 points • 1,520 views
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Kubernetes: How to connect Node.js SDK to Hyperledger Fabric network?

Nov 12, 2020 in Blockchain by piyusha
 • 170 points • 2,550 views
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How to set the ERC20 token price in respect to ether in solidity?

Nov 7, 2020 in Blockchain by jas
 • 120 points • 5,204 views
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1 answer

Need to do pdf file to blockchain and how to do?

Oct 18, 2020 in Blockchain by Sagara
 • 120 points • 1,221 views
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1 answer

PAYMENT ERRORS

Oct 9, 2020 in Blockchain by anonymous
 • 120 points • 881 views
0 votes
2 answers

Chaincode Installation failed, Hyperledger Fabric

Oct 5, 2020 in Blockchain by Bhuwan
 • 130 points • 5,405 views
0 votes
2 answers

Code to change owner

Sep 26, 2020 in Blockchain by Wilson
 • 140 points • 1,932 views
0 votes
2 answers

Getting error while Initialising the Blockchain

Sep 17, 2020 in Blockchain by Edureka
 • 200 points • 3,345 views
0 votes
1 answer

Solidity: Code to hide message sender address (msg.sender) when writing on a contract

Sep 14, 2020 in Blockchain by Wilson
 • 140 points • 2,048 views
0 votes
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I got stuck in Blockchain Course. Please Help Me!

Sep 6, 2020 in Blockchain by Arcadius
 • 120 points • 745 views
0 votes
2 answers

Key Advantages of Using Blockchain in Banking

Jul 15, 2020 in Blockchain by blockchainhq
 • 120 points • 1,139 views
0 votes
2 answers

how save data from different account using web3.py to smart contract

Jul 14, 2020 in Blockchain by anonymous
 • 120 points • 1,562 views
0 votes
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How do I apply Ethereum Private blockchain or Hyperledger Fabric to Healthcare data management/Drug Traceability?

Jul 3, 2020 in Blockchain by pauloshikoya
 • 120 points • 1,292 views
0 votes
1 answer

Blockchain Basic Questions

Jun 29, 2020 in Blockchain by Nikhil
 • 120 points • 1,298 views
0 votes
1 answer

How to create an instance of contract in Truffle console?

Jun 17, 2020 in Blockchain by Edureka
 • 120 points • 2,050 views
0 votes
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Attach two nodes on different machine via private blockchain (Ethereum)

Jun 9, 2020 in Blockchain by Ritvik
 • 120 points • 1,566 views
0 votes
1 answer

Channel fails to create Hyperledger Fabric

May 26, 2020 in Blockchain by Sara
 • 130 points • 2,220 views
0 votes
2 answers

is there any way of getting all data in hyperledger fabric before we start the ledger

May 22, 2020 in Blockchain by harinishree
 • 150 points • 1,540 views
0 votes
1 answer

Which is the best website to learn Blockchain with Certification?

May 20, 2020 in Career Counselling by kartik
 • 37,520 points • 726 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

May 14, 2020 in Blockchain by harinishree
 • 150 points • 1,393 views
+1 vote
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Hyperledger fabric : unable to create channel on raspberry pi 4 with Raft ordering service

May 13, 2020 in Blockchain by Manon
 • 130 points • 1,438 views
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1 answer

Error: '.' is not recognized as an internal or external command,

May 5, 2020 in Blockchain by kartik
 • 37,520 points • 9,958 views
0 votes
1 answer

Javascript ES6 TypeError: Class constructor Client cannot be invoked without 'new'

May 5, 2020 in Blockchain by kartik
 • 37,520 points • 22,925 views
0 votes
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Received error response from peer: message=failed to execute transaction 33b63361e1ce528c334ecf9ef70af2c9136c0fcc444d1ead9d24b5bae8c6dc57

May 4, 2020 in Blockchain by Edureka
 • 120 points • 911 views
0 votes
1 answer

I face problem while running hyperledger fabric's sample application "build your first network" byfn.sh giving time out while chaincode installation.

Apr 25, 2020 in Blockchain by SudipDurgapur
 • 140 points • 4,189 views
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how can i add more than one node to mining blocks ??

Apr 12, 2020 in Blockchain by Hicham
 • 120 points • 631 views
0 votes
1 answer

Could not assemble transaction, err proposal response was not successful, error code 500, msg chaincode registration failed: container exited with 0

Apr 8, 2020 in Blockchain by nithin
 • 140 points • 4,152 views
0 votes
1 answer

getting error while starting Hyperleger fabric network on Aws server

Mar 30, 2020 in Blockchain by nithin
 • 140 points • 3,225 views
0 votes
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How I can connect multiple physical machine with hyperledger fabric??

Mar 12, 2020 in Blockchain by Md
 • 120 points • 1,371 views
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