Most voted questions in Blockchain

+16 votes
4 answers

Why do only ADMIN users in Hyperledger Fabric have the permission to install query in chaincode?

It was already decided that installing chaincode ...READ MORE

Apr 3, 2018 in Blockchain by Perry
• 17,100 points
3,602 views
+15 votes
5 answers

How to add Org or peer in Org dynamically in Hyperledger fabric?

I know it is a bit late ...READ MORE

Jul 27, 2018 in Blockchain by Omkar
• 69,230 points

edited Jul 22, 2019 by Omkar 4,596 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
972 views
+14 votes
5 answers

Difference between hyperledger fabric and sawtooth?

Source: https://www.hyperledger.org/wp-content/uploads/2017/ ...READ MORE

Aug 29, 2018 in Blockchain by Anurag
8,583 views
+11 votes
4 answers

How do I create an ether wallet?

The Ethereum Wallet is a gateway to decentralized applications ...READ MORE

Sep 14, 2018 in Blockchain by Shiva
1,541 views
+6 votes
3 answers

Why don't we consider Git as a Blockchain?

Blockchain is not just any chain of any blocks. Blockchain is when there ...READ MORE

Sep 7, 2018 in Blockchain by Rowski
3,122 views
+5 votes
1 answer

What are the programming languages I should know to become a Blockchain Developer?

Well, what programming language you have to ...READ MORE

Sep 25, 2018 in Blockchain by digger
• 26,740 points
695 views
+4 votes
2 answers

Hyperledger Fabric issue: orderer client failed to connect to orderer.xxx.net:7050: failed to create new connection

Hey @gujiwork, Try making the following changes: docker-compose-base.yaml and ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
• 69,230 points
18,831 views
+4 votes
2 answers

Warning: Invoking events without “emit” prefix is deprecated while truffle compile

As the warning mentions, add emit as ...READ MORE

Oct 16, 2018 in Blockchain by Aisha
1,582 views
+4 votes
4 answers

What are the implementations of IBM blockchain?

IBM is an open source community of ...READ MORE

Mar 30, 2018 in Blockchain by Christine
• 15,790 points
845 views
+4 votes
3 answers

What type of database is blockchain?

Blockchain is a distributed database. what makes ...READ MORE

Mar 30, 2018 in Blockchain by Christine
• 15,790 points
949 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
2,389 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 2,300 views
+4 votes
5 answers

How is Blockchain a distributed database?

Think of blockchain as a relatively slow, ...READ MORE

Mar 26, 2018 in Blockchain by Christine
• 15,790 points
1,288 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
2,249 views
+3 votes
1 answer

When I ran truffle init, I got this error:

Hey there @Davidala! The error says that it ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
• 69,230 points
561 views
+3 votes
1 answer

What is the difference between online and offline hyperledger composer?

Hey @Renu353! Well, it's good that you ...READ MORE

Sep 21, 2018 in Blockchain by Omkar
• 69,230 points
691 views
+3 votes
3 answers

How to validate bitcoin address?

I found these 2 scripts online: Javascript: <html> <head> <script type="text/javascript" ...READ MORE

Aug 17, 2018 in Blockchain by slayer
• 29,350 points
5,962 views
+3 votes
4 answers

How to solve “ERROR: manifest for hyperledger/fabric-orderer:latest not found” error?

I was having the same problem and ...READ MORE

Sep 6, 2018 in Blockchain by Rakesh
5,990 views
+3 votes
4 answers

How do I add a new node on a Hyperledger network?

You can do this by generating the crypto ...READ MORE

Apr 7, 2018 in Blockchain by Christine
• 15,790 points
5,033 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
1,000 views
+2 votes
1 answer

Issue in Initialising the Blockchain

Hi, I am also getting the same ...READ MORE

Sep 17, 2020 in Blockchain by Edureka
• 200 points

reshown Sep 17, 2020 by Gitika 1,161 views
+2 votes
0 answers

Doubt regarding Initialising a Blockchain [closed]

Whenever Iam trying to run the command: /home/vashist/go-ethereum/build/bin/geth ...READ MORE

Jan 5, 2020 in Blockchain by vt
• 210 points

closed Jan 6, 2020 by Kalgi 397 views
+2 votes
1 answer

Trying to instantiate chain code on channel

Looking at the error, it seems like ...READ MORE

Aug 1, 2019 in Blockchain by Jessica
1,673 views
+2 votes
1 answer

how to convert hash160 to bitcoin address in python?

Hey @Raj. I use the following script. ...READ MORE

Jul 12, 2019 in Blockchain by Tanisha
3,256 views
+2 votes
4 answers

"failed to create new connection context deadline exceeded." error in Hyperledger Fabric

Try remove previous docker containers(have mentioned the ...READ MORE

Apr 24, 2019 in Blockchain by Kiran
12,190 views
+2 votes
3 answers

Hyperledger Fabric: Peer Connection error: Failed obtaining connection: Could not connect to any of the endpoints.

 You can extend your /etc/hosts file and make orderer.example.com domain name ...READ MORE

Nov 13, 2018 in Blockchain by Omkar
• 69,230 points
3,548 views
+2 votes
3 answers

Hyperledger Fabric: Not able to create the channel "Channel creation failed" error

Seems like you have not set the ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
• 69,230 points
7,225 views
+2 votes
3 answers

Hyperledger Fabric: How to run node js chaincode in dev mode?

Hi, the command you are using to ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
• 69,230 points
4,211 views
+2 votes
1 answer

Composer playground - issue on RHEL

Hey, Renu353. There could be more than ...READ MORE

Sep 24, 2018 in Blockchain by Omkar
• 69,230 points
912 views
+2 votes
1 answer

Has Blockchain made illegal activities easier?

Not really.. The transparency of Blockchain makes ...READ MORE

Sep 20, 2018 in Blockchain by Sumit
324 views
+2 votes
1 answer

What is Bitcoin Powered Electrical Outlet?

Bitcoin powered electrical outlet is nothing but ...READ MORE

Sep 20, 2018 in Blockchain by Bhaskar
544 views
+2 votes
3 answers

Blockchain and HyperLedger difference

Hey, you got it right! Blockchain is ...READ MORE

Sep 7, 2018 in Blockchain by Omkar
• 69,230 points
752 views
+2 votes
5 answers

How do I parse this JSON array in PHP?

/** * Firstly collect the ...READ MORE

Sep 3, 2018 in Blockchain by slayer
• 29,350 points
6,000 views
+2 votes
3 answers

What are the functions of the Fabric CA Server and Fabric CA Client?

You need to setup the Fabric CA ...READ MORE

Aug 25, 2018 in Blockchain by Perry
• 17,100 points
5,069 views
+2 votes
5 answers

How to install Ganache.appx on Windows 7

Go to https://github.com/trufflesuite/ganache/releases there are a set of ...READ MORE

Aug 17, 2018 in Blockchain by Omkar
• 69,230 points
14,090 views
+2 votes
1 answer

How to solve “SyntaxError: unexpected EOF” error in python?

There is not a problem in the ...READ MORE

Jul 30, 2018 in Blockchain by slayer
• 29,350 points
4,980 views
+2 votes
1 answer

How to store data in Hyperledger Fabric after restart?

When you use docker-compose down, all the ...READ MORE

Jul 27, 2018 in Blockchain by digger
• 26,740 points
2,824 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
2,060 views
+2 votes
1 answer

What are the wallet path credentials for Web3j?

Follow the below steps: Go to the private ...READ MORE

Aug 2, 2018 in Blockchain by Omkar
• 69,230 points
1,555 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
5,127 views
+2 votes
3 answers

Can multi-channels be supported by Hyperledger in one peer?

Yes you can run  multiple chains on ...READ MORE

Apr 11, 2018 in Blockchain by Perry
• 17,100 points
2,545 views
+2 votes
1 answer

Blockchain declining my API key and I cannot understand why.

It's quite easy. Request the API key using ...READ MORE

Apr 3, 2018 in Blockchain by Christine
• 15,790 points
1,819 views
+2 votes
1 answer

What are the difference between various Hyperledger Projects?

Hyperledger incubates a plethora of business blockchain ...READ MORE

Mar 26, 2018 in Blockchain by Perry
• 17,100 points
1,278 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
• 9,670 points
341 views
+1 vote
0 answers

How to generate bitcoin address from XPUB

How to generate bitcoin addresses from XPUB ...READ MORE

Mar 9, 2022 in Blockchain by Soham
• 9,700 points
1,485 views
+1 vote
0 answers

How to check a Bitcoin wallet balance from first generated address (m/44'/0'/0'/0/0)

Is there a way to check a ...READ MORE

Mar 9, 2022 in Blockchain by Soham
• 9,700 points
1,398 views
+1 vote
0 answers

How to check a Bitcoin wallet balance from first generated address (m/44'/0'/0'/0/0)

Is there a way to check a ...READ MORE

Mar 4, 2022 in Blockchain by Soham
• 9,700 points
1,980 views
+1 vote
1 answer

Is it possible to store images on the Ethereum blockchain?

This is possible for your information but, ...READ MORE

Feb 24, 2022 in Blockchain by Aditya
• 7,680 points
1,637 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

Hey, @Harinishree, With error "Invalid network configuration due ...READ MORE

May 14, 2020 in Blockchain by Gitika
• 65,910 points
1,001 views