Most answered questions in Blockchain

+1 vote
2 answers

Using Composite Key formation to get states for a date range in Hyperledger Fabric V1.0

I think you have found a partial ...READ MORE

Jul 20, 2018 in Blockchain by charlie_brown
 • 7,720 points • 4,297 views
0 votes
2 answers

Issues while installing Hyperledger Composer

Follow these steps to correctly install: mkdir ~/fabric-dev-servers ...READ MORE

Nov 15, 2018 in Blockchain by Omkar
 • 69,210 points • 787 views
+1 vote
2 answers

How to solve Hyperledger Fabric "error endorsing chaincode" error?

Try to install chaincode with a name ...READ MORE

Jul 13, 2018 in Blockchain by digger
 • 26,740 points • 4,274 views
+2 votes
2 answers

Can two chaincode interact with each other?

Yes, it is possible for two chaincodes ...READ MORE

Jul 12, 2018 in Blockchain by slayer
 • 29,350 points • 2,023 views
0 votes
2 answers

What is the difference between full node and partial node?

We need different types of nodes to ...READ MORE

May 31, 2019 in Blockchain by Sourav kumar
 • 5,080 views
+1 vote
2 answers

Where is custom chaincode path Hyperledger Fabric 1.0?

You have to have your chaincode at ...READ MORE

Jul 10, 2018 in Blockchain by slayer
 • 29,350 points • 2,727 views
0 votes
2 answers

How to use multiple anchor peers in an organization?

To use multiple anchor peers, you need ...READ MORE

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 2,650 views
0 votes
2 answers

Where can i find Hyperledger Fabric Node SDK sample application?

Here are some links where you can ...READ MORE

Apr 26, 2019 in Blockchain by Firoz
 • 3,105 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 • 1,044 views
0 votes
2 answers

Why does not India consider Bitcoin as a legal tender?

to be specific there are few logical ...READ MORE

Jul 3, 2018 in Blockchain by Priyaj
 • 58,090 points • 596 views
0 votes
2 answers

Hyperledger Fabric Bluemix not accepting logins.

The error is caused because your certificate ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,210 points • 549 views
0 votes
2 answers

How can I make transactions to a blockchain from a remote device(like a cell phone)?

You can do this by developing a ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,210 points • 762 views
+1 vote
2 answers

How to convert INT to STRING in Solidity?

Look at the following code : function uintToString(uint ...READ MORE

Jun 27, 2018 in Blockchain by Christine
 • 15,790 points • 11,697 views
+1 vote
2 answers

How to return value from a chaincode in Hyperledger Fabric?

Hyperledger Fabric supports only 2 types of ...READ MORE

Jun 13, 2018 in Blockchain by Perry
 • 17,100 points • 2,608 views
0 votes
2 answers

How to get notified when an event triggers on ethereum smart contract?

Muchas gracias. ?Como puedo iniciar sesion? READ MORE

May 2, 2020 in Blockchain by aqowcmbevs
 • 2,169 views
0 votes
2 answers

How to set permissions within a blockchain?

There are blockchains that allow defining permissions. Hyperledger ...READ MORE

Aug 28, 2018 in Blockchain by Michael
 • 877 views
0 votes
2 answers

Can a blockchain be used to verify or store a document on the blockchain?

This link could help you. READ MORE

Aug 28, 2018 in Blockchain by Suman
 • 1,361 views
+1 vote
2 answers

What if a bitcoin clients could create identical private keys?

If this happens, then Person B will ...READ MORE

Aug 28, 2018 in Blockchain by Evan
 • 624 views
+1 vote
2 answers

How can a public proof of work be secured?

Bitcoin was the first implementation of blockchain, ...READ MORE

May 9, 2018 in Blockchain by Johnathon
 • 9,090 points • 579 views
+2 votes
2 answers

How can I traverse the blocks of transactions in hyperledger fabric?

For hyperledger fabric you can use query ...READ MORE

May 8, 2018 in Blockchain by Rachel
 • 5,081 views
+1 vote
2 answers

How can I use blockhain for storing a proof of a document such as an image?

Yes, you're right. Saving entire image in ...READ MORE

Aug 28, 2018 in Blockchain by hakusaro
 • 656 views
0 votes
2 answers

Why is network already up to date while trying to deploy a contract on truffle?

I guess you have ganache running already ...READ MORE

Apr 24, 2018 in Blockchain by Shashank
 • 10,400 points • 4,150 views
+1 vote
2 answers

What is a blockchain and ethereum?

Some of the use-cases are: Healthcare Medical records are ...READ MORE

Aug 9, 2018 in Blockchain by Omkar
 • 69,210 points • 596 views
+1 vote
2 answers

Can I include real world data in a smart contract? If so, how?

You cant access/embed real world data using ...READ MORE

Jul 18, 2018 in Blockchain by sapan
 • 893 views
+1 vote
2 answers

How a merkle tree is generated?

In a Merkle tree, transaction IDs (txid) ...READ MORE

Apr 5, 2018 in Blockchain by Shashank
 • 10,400 points • 861 views
+1 vote
2 answers

Hyperledger - Can I have some instances on one network while on a Virtual Box?

Yes, you can connect multiple instances to ...READ MORE

Aug 1, 2018 in Blockchain by Omkar
 • 69,210 points • 709 views
+1 vote
2 answers

HyperLedger Fabric Java SDK - Wrinting the ChainCode Sample in Java

To get started developing Java chaincode Ensure you ...READ MORE

Aug 3, 2018 in Blockchain by Omkar
 • 69,210 points • 3,986 views
+1 vote
2 answers

Is there any relation between the number of transactions processes and the miners?

the direct answer to your query is ...READ MORE

Jun 19, 2018 in Blockchain by Perry
 • 17,100 points • 515 views
+1 vote
2 answers

How is Blockchain programming languages different than usual programming?

The programming syntax of most of the ...READ MORE

Mar 30, 2018 in Blockchain by Christine
 • 15,790 points • 882 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 • 965 views
+1 vote
2 answers

Hyperledger: get “/bin/bash: ./scripts/script.sh: No such file or directory” when running “./byfn -m up”

You can follow these steps : In your ...READ MORE

Mar 27, 2018 in Blockchain by ned_crew
 • 1,610 points • 3,232 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 • 926 views
+15 votes
2 answers

What are the various blockchain smart contracts platforms?

While Ethereum is the most popular platform ...READ MORE

Mar 27, 2018 in Blockchain by Johnathon
 • 9,090 points • 938 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
 • 2,349 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 • 2,223 views
0 votes
1 answer

How to write the Bitcoin logo as text?

Create a string in strings.xml like the ...READ MORE

Apr 12, 2022 in Blockchain by Aditya
 • 7,680 points • 626 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 • 1,146 views
0 votes
1 answer

PHP - Validate Multisig Bitcoin Wallet Address (with Leading 2 or 3)

 The answer to your question is located here:  function ...READ MORE

Apr 11, 2022 in Blockchain by Soham
 • 9,700 points • 1,628 views
0 votes
1 answer

blockchain api payment module

No curly braces after your if statement. ...READ MORE

Apr 11, 2022 in Blockchain by Soham
 • 9,700 points • 624 views
0 votes
1 answer

Error using Santiment sanpy library for cryptocurrency data analysis

This is a great start, but I ...READ MORE

Apr 11, 2022 in Blockchain by Soham
 • 9,700 points • 579 views
0 votes
1 answer

Transaction verification in Blockchain

Assuming You are asking about UTXO transaction ...READ MORE

Apr 11, 2022 in Blockchain by Soham
 • 9,700 points • 654 views
0 votes
1 answer

Naives Bayes Classifier for bag of vectorized sentences

The error is basically the [X_train] which ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 507 views
0 votes
1 answer

safeTransferFrom does not transfer etherium to the target. ERC-721

I changed my contract buy function like ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 730 views
0 votes
1 answer

Is there a pricing calculator for azure-blockchain-workbench or azure baas using hyperledger fabric?

The cost of Blockchain Workbench is an ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 421 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
 • 9,670 points • 288 views
0 votes
1 answer

Is Ganache Decentralized?

1. Can blockchain be implemented without cryptocurrency? Yes. ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 501 views
0 votes
1 answer

Unable to send Ripple (Cryptocurrency Coin - XRP) to Wallet

The "Secret Key" or privateKey is for ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 808 views
0 votes
1 answer

How would calculate the exchange rate of Bitcoin/GBP?

You simply divide 1 by the resulting ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 259 views
0 votes
1 answer

Where does Hyperledger fabric store the public key and private key of the user?

It signs the transaction with its private key ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 599 views
0 votes
1 answer

.Ethereum/BSC blockchain transaction data

The "Tokens Transferred" information comes from event ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
 • 9,670 points • 737 views
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