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
• 17,090 points
1,417 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
• 68,160 points

edited Jul 22 by Omkar 1,999 views
+15 votes
2 answers

What are the various blockchain smart contracts platforms?

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

Mar 26, 2018 in Blockchain by Johnathon
• 9,090 points
139 views
+14 votes
5 answers

Difference between hyperledger fabric and sawtooth?

Source: https://www.hyperledger.org/wp-content/uploads/2017/0 ...READ MORE

Aug 29, 2018 in Blockchain by Anurag
1,832 views
+11 votes
5 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
102 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
171 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
• 26,600 points
76 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
• 68,160 points
4,481 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
79 views
+4 votes
3 answers

What are the implementations of IBM blockchain?

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

Mar 29, 2018 in Blockchain by Christine
• 15,810 points
71 views
+4 votes
3 answers

What type of database is blockchain?

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

Mar 29, 2018 in Blockchain by Christine
• 15,810 points
105 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
547 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
• 17,090 points

edited Oct 11, 2018 by Omkar 366 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
• 15,810 points
207 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
• 17,090 points
239 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
• 68,160 points
64 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
• 68,160 points
105 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
• 29,230 points
1,013 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
393 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 6, 2018 in Blockchain by Christine
• 15,810 points
1,698 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
• 1,620 points
176 views
+2 votes
1 answer

Trying to instantiate chain code on channel

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

Aug 1 in Blockchain by Jessica
83 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 in Blockchain by Tanisha
155 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 23 in Blockchain by Kiran
3,561 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
• 68,160 points
1,033 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
• 68,160 points
1,181 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
• 68,160 points
132 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
35 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
42 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
• 68,160 points
104 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
• 29,230 points
1,201 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 24, 2018 in Blockchain by Perry
• 17,090 points
1,721 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
• 68,160 points
1,446 views
+2 votes
1 answer

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

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

Jul 29, 2018 in Blockchain by slayer
• 29,230 points
1,129 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
• 29,230 points
800 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
• 68,160 points
314 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 10, 2018 in Blockchain by Perry
• 17,090 points
686 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
• 17,090 points
368 views
+1 vote
0 answers
+1 vote
0 answers

not getting real transaction ID only getting temp-transaction ID in fabric-sdk

I am using below code for submitting ...READ MORE

Nov 14 in Blockchain by laxman
• 130 points
49 views
+1 vote
0 answers

creation of channel

I am facing in creation channel, please ...READ MORE

Nov 12 in Blockchain by anonymous
• 130 points
39 views
+1 vote
2 answers
+1 vote
0 answers

how to create a voting Dapp ?!

Hello i am student and i wanna ...READ MORE

Oct 6 in Blockchain by Aymen
• 130 points
109 views
+1 vote
1 answer

Can we pass string values to the contract which holds bytes 32 only?

A string is not byte32 and so ...READ MORE

Aug 26 in Blockchain by Rina
72 views
+1 vote
0 answers

Can I change the network id in ganache GUI? Is it work for calling the functions in solidity?

Can I change the network id in ...READ MORE

Aug 16 in Blockchain by anonymous

edited Aug 19 by Omkar 85 views
+1 vote
0 answers

Error while sending a transaction from Web3py to a Smart Contract in Remix

Ok, so I am trying to make ...READ MORE

Aug 5 in Blockchain by Yaxir

edited Aug 5 by Omkar 77 views
+1 vote
1 answer

hyperledger fabric: can't find package: github.com/pkg/errors in GOPATH or GOROOT

Hey @aiga, try to add the package ...READ MORE

Aug 5 in Blockchain by Esha
190 views
+1 vote
0 answers