Most viewed questions in Blockchain

0 votes
10 answers

How to solve gradle build failed error?

I migrated the project to a different ...READ MORE

Dec 7, 2018 in Blockchain by Rajat
8,187 views
0 votes
2 answers

Angular Bitcoin error: "Error trying to diff '[object Object]'"

There are two approaches to this: 1. You ...READ MORE

Sep 4, 2018 in Blockchain by slayer
• 29,240 points
6,391 views
+1 vote
4 answers

Installing Nodejs: sh: node: command not found error

You have to first install nodejs and ...READ MORE

Oct 22, 2018 in Blockchain by Omkar
• 68,180 points
5,440 views
+1 vote
3 answers

Removing double quotes from a string from JSON response in PHP

Just remove the json_encode call, and it should work: $resp ...READ MORE

Sep 12, 2018 in Blockchain by digger
• 26,600 points
5,151 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
• 68,180 points
4,544 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
3,594 views
0 votes
2 answers

Hyperledger Fabric: Error: could not assemble transaction, err proposal response was not successful.

Hey. It seems like you already have ...READ MORE

Nov 19, 2018 in Blockchain by Omkar
• 68,180 points
2,882 views
+1 vote
8 answers

How is Blockchain a linked list?

Blockchain is similar to Single Linked List ...READ MORE

Aug 3, 2018 in Blockchain by Omkar
• 68,180 points
2,572 views
–1 vote
6 answers
+1 vote
2 answers

Hyperledger fabric: Error: got unexpected status: FORBIDDEN -- Failed to reach implicit threshold of 1 sub-policies

Try  ./byfn.sh -m down and then ./byfn.sh -m up READ MORE

Nov 5, 2018 in Blockchain by Omkar
• 68,180 points
2,290 views
0 votes
2 answers

How to completely uninstall hyperledger composer?

You might have to uninstall/remove files from ...READ MORE

Aug 9, 2018 in Blockchain by slayer
• 29,240 points
2,274 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
• 68,180 points
2,143 views
+1 vote
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
2,103 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
• 68,180 points

edited Jul 22 by Omkar 2,010 views
+1 vote
4 answers

How PBFT algorithm works?

PBFT is a way for a distributed ...READ MORE

Apr 25 in Blockchain by Kiran
2,006 views
0 votes
4 answers

Hyperledger: byfn.sh up: ERROR !!! FAILED to execute End-2-End Scenario.

Try these commands $ docker rm -f $(docker ...READ MORE

Nov 28, 2018 in Blockchain by kartik chauhan
1,969 views
0 votes
3 answers

Querying past transaction data from Hyperledger Fabric.

You can use shim function and query ...READ MORE

Apr 25 in Blockchain by Shaheen
1,969 views
0 votes
3 answers

Truffle migrate Could not connect to your Ethereum client.

As mentioned in the previous answer, you ...READ MORE

Feb 19 in Blockchain by Dinesh
1,968 views
0 votes
4 answers

How to solve “bind: cannot assign requested address” Error?

You must mention in your host.conf file ...READ MORE

Jul 31, 2018 in Blockchain by slayer
• 29,240 points
1,904 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
1,879 views
+1 vote
5 answers

Difference between internal-external, private-public in function

External: These functions are part of the ...READ MORE

Apr 7, 2018 in Blockchain by Shashank
• 10,350 points
1,866 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
1,733 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
1,702 views
0 votes
1 answer

How to fix "failed to execute script docker compose" error on windows 7?

It seems like the container is not ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 68,180 points
1,698 views
+1 vote
4 answers

Hyperledger: Cannot compile chaincode, cannot find package error

As the error says, it cant find ...READ MORE

Oct 26, 2018 in Blockchain by Omkar
• 68,180 points
1,678 views
+1 vote
4 answers

How to estimate the cost for deploying smart contract on mainnet?

Since you have already deployed the contract ...READ MORE

Apr 9, 2018 in Blockchain by Shashank
• 10,350 points
1,650 views
0 votes
4 answers

Hyperledger Fabric: Error: 2 UNKNOWN: access denied: channel [contentbackchainchannel] creator org

Run the following command inside fabric-tools folder: ./teardownFabric.sh ./startFabric.sh ./createPeerAdminCard.sh Then ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
• 68,180 points
1,649 views
0 votes
2 answers

Using Hyperledger composer with Hyperledger Blockchain explorer.

I was facing the same issue and ...READ MORE

Aug 9, 2018 in Blockchain by digger
• 26,600 points
1,633 views
+1 vote
7 answers

What are the advantages and limitations of hyperledger composer over fabric?

While hyperledger composer is a set of ...READ MORE

Apr 7, 2018 in Blockchain by Perry
• 17,090 points
1,576 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 25 in Blockchain by Firoz
1,521 views
0 votes
1 answer

How to print a message in Solidity??

You can use the require function to do this. ...READ MORE

Dec 12, 2018 in Blockchain by Omkar
• 68,180 points
1,501 views
0 votes
1 answer

Hyperledger Fabric: How to Parse arrays in req.body in node js express?

You can get the value from the ...READ MORE

Nov 16, 2018 in Blockchain by Kavya
1,468 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
• 68,180 points
1,464 views
+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
1,428 views
+1 vote
3 answers

How efficient is Ethereum in regard to its TPS??

TPS means transactions processing at any given ...READ MORE

Apr 16, 2018 in Blockchain by Shashank
• 10,350 points
1,412 views
+1 vote
3 answers

How to solve “Module not found: Error: Can't resolve 'truffle-contract'” error in web3?

Try compiling and migrating the contract: $ truffle ...READ MORE

Apr 30 in Blockchain by Rachita
1,401 views
+1 vote
3 answers

Hyperledger Fabric: How to delete installed chaincode ?

One way to do it, that I ...READ MORE

Nov 19, 2018 in Blockchain by Omkar
• 68,180 points
1,354 views
0 votes
4 answers

Hyperledger fabric: enrollAdmin.js Error: Cannot find module 'fabric-client'

Change your directory to fabric-samples/fabrcar. And run: npm ...READ MORE

Nov 21, 2018 in Blockchain by Omkar
• 68,180 points
1,342 views
+1 vote
3 answers

How to connect peers to a private network using geth?

Follow the below steps to connect peers ...READ MORE

Jul 13, 2018 in Blockchain by slayer
• 29,240 points
1,336 views
0 votes
2 answers

How to install Ganache on Linux?

For linux you first need to download ...READ MORE

Jun 2 in Blockchain by Tushar
• 170 points
1,302 views
+1 vote
2 answers

Peer chaincode instantiation timeout expired

Hey, i think you made a slight ...READ MORE

Sep 19, 2018 in Blockchain by digger
• 26,600 points
1,300 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
• 15,810 points
1,294 views
+1 vote
4 answers

Uncaught Error: Returned values aren't valid, did it run Out of Gas?

Could be due to previously set values. ...READ MORE

Jan 30 in Blockchain by Omkar
• 68,180 points
1,270 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
• 29,240 points
1,224 views
+1 vote
4 answers

Hyperledger Fabric: Failed to enroll admin: Error: Failed to enroll admin.

As your .hfc-key-store directory is in chaindev, Try running the following ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
• 68,180 points
1,221 views
0 votes
1 answer

Hyperledger Fabric: can't load package: package github.com/hyperledger/fabric/core/chaincode/shim:

You can install various golang projects with ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
• 68,180 points
1,221 views
–1 vote
1 answer

Truffle migrate not deploying contract.

When you run truffle migrate it shows that network ...READ MORE

Jan 18 in Blockchain by Omkar
• 68,180 points
1,210 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
• 68,180 points
1,197 views
+1 vote
5 answers

Where does the smart contracts stored and executed on blockchain?

Ethereum smart contracts are executed on EVM ...READ MORE

May 2, 2018 in Blockchain by Shashank
• 10,350 points
1,191 views
0 votes
4 answers

Issue with getting web3.eth.accounts (MetaMask)

I solved problem, using: web3.eth.getAccounts((err, res) => ...READ MORE

Oct 12, 2018 in Blockchain by Perry
• 17,090 points
1,169 views