Trending questions in Blockchain

0 votes
1 answer

Cannot read property 'getBlock' of undefined

getBlock is used by web3 and to use it, ...READ MORE

Jan 29, 2019 in Blockchain by Omkar
• 69,230 points
1,375 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
• 26,740 points
3,225 views
0 votes
0 answers

Cannot read property 'curve' of undefined, while running hyperledger fabric project.

Cannot read property 'curve' of undefined ...READ MORE

Jan 30, 2019 in Blockchain by shraddha
1,369 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
5,231 views
–1 vote
1 answer

How to get balance of all accounts in ethereum network using javascript?

You can write a function that will ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
• 69,230 points
2,257 views
+1 vote
2 answers

Can I invoke a chaincode function from the chaincode itself?

Here's an example on how you can ...READ MORE

May 7, 2019 in Blockchain by Shir
3,203 views
0 votes
1 answer

What is 51% attack in Blockchain?

51% Attack is a situation where a group ...READ MORE

Feb 13, 2019 in Blockchain by Omkar
• 69,230 points
734 views
0 votes
1 answer

How can I call a contract from another contract?

There are two ways to solve this. ...READ MORE

Jan 23, 2019 in Blockchain by Omkar
• 69,230 points
1,595 views
0 votes
2 answers

Hyperledger byfn: could not assemble transaction: ProposalResponsePayloads do not match

This is because you have not installed ...READ MORE

Nov 20, 2018 in Blockchain by Omkar
• 69,230 points
3,153 views
–1 vote
1 answer

geth attach Fatal: Unable to attach to remote geth: no known transport for URL scheme "c"

Seems like geth.ipc path is not set. When ...READ MORE

Jan 17, 2019 in Blockchain by Omkar
• 69,230 points
1,890 views
0 votes
1 answer

Not able to connect to Ethereum node in web browser

By default, geth listens only to localhost. ...READ MORE

Jan 16, 2019 in Blockchain by Omkar
• 69,230 points
1,818 views
0 votes
1 answer

Does a hyperledger fabric application client need to connect to all peers?

No, it is not necessary to connect ...READ MORE

Jan 31, 2019 in Blockchain by Omkar
• 69,230 points
1,172 views
0 votes
1 answer

Do the orderers see the transaction data in Hyperledger Fabric?

No, the orderers do not see the ...READ MORE

Feb 4, 2019 in Blockchain by Omkar
• 69,230 points
985 views
0 votes
1 answer

Truffle deployer is not working

If you have deployed it before, then ...READ MORE

Jan 29, 2019 in Blockchain by Omkar
• 69,230 points
1,187 views
+1 vote
2 answers

How to configure Endorsement policy in Hyperledger?

The Hyperledger Fabric Endorsement policy is configured ...READ MORE

Jul 25, 2018 in Blockchain by slayer
• 29,360 points
3,078 views
–1 vote
1 answer

Not able to compile truffle project

Hi. If you look at the error ...READ MORE

Jan 17, 2019 in Blockchain by Omkar
• 69,230 points
1,706 views
–1 vote
1 answer

Miner in Ethereum Private network is hanging

Looking at your commands again, I figured ...READ MORE

Jan 17, 2019 in Blockchain by Omkar
• 69,230 points
1,686 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
• 26,740 points
3,199 views
0 votes
1 answer

Variable declaration problem in truffle console.

The reason it says “undefined” is because ...READ MORE

Jan 27, 2019 in Blockchain by Omkar
• 69,230 points
1,166 views
0 votes
1 answer

Not able to set up the testrpc or geth client on ubuntu

The commands you have used installs Ethereum ...READ MORE

Feb 8, 2019 in Blockchain by Omkar
• 69,230 points
636 views
+1 vote
1 answer

geth: Fatal: Failed to read genesis file: open “/home/edureka/privatechain/”: no such file or directory

Use this: geth --datadir ./data init ./custom_genesis.json READ MORE

Dec 6, 2018 in Blockchain by Omkar
• 69,230 points
3,381 views
–1 vote
2 answers

Truffle migrate shows Error: Cannot find module 'truffle-expect'

You can also install the basic truffle-expect ...READ MORE

Feb 19, 2019 in Blockchain by Rohit
823 views
0 votes
1 answer

Why is off-chain transaction used?

Though on-chain transactions secure data, off-chain transactions ...READ MORE

Feb 13, 2019 in Blockchain by Omkar
• 69,230 points
379 views
0 votes
3 answers

Hyperledger-fabric not working with docker swarm

The issue is that the chaincode container ...READ MORE

Aug 21, 2018 in Blockchain by Perry
• 17,100 points
2,468 views
0 votes
1 answer

Does Hyperledger support Smart Contract like Ethereum?

Yes, but not exactly true. Ethereum uses ...READ MORE

Feb 4, 2019 in Blockchain by Omkar
• 69,230 points
755 views
0 votes
1 answer

Calling Truffle Commands through a script

Seems like its due to async behavior ...READ MORE

Jan 25, 2019 in Blockchain by Omkar
• 69,230 points
1,181 views
0 votes
1 answer

program can't start because cudart64_70.dll is missing

You might have missed out installing the ...READ MORE

Jan 29, 2019 in Blockchain by Omkar
• 69,230 points
882 views
0 votes
1 answer

How will I know the result of Fabric Transaction from application client?

When a transaction happens, a proposal response ...READ MORE

Feb 5, 2019 in Blockchain by Omkar
• 69,230 points
620 views
0 votes
0 answers
0 votes
1 answer

Geth console can’t access smart contract

You are running commands using an object ...READ MORE

Jan 27, 2019 in Blockchain by Omkar
• 69,230 points
940 views
0 votes
1 answer

truffle migrate Error: “Cannot find module 'truffle-expect'”

Seems like you are missing some modules ...READ MORE

Jan 24, 2019 in Blockchain by Omkar
• 69,230 points
1,104 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
5,197 views
0 votes
2 answers

Hyperledger-fabric : chaincode deploy connection error "addrConn.resetTransport failed to create client"

I have your problem too,  PLEASE HELP ...READ MORE

Feb 28, 2019 in Blockchain by Hyperledger hater
2,069 views
0 votes
1 answer

Truffle does not open console, instead opens truffle.js file

When running truffle commands on Windows system, ...READ MORE

Jan 29, 2019 in Blockchain by Omkar
• 69,230 points
820 views
–1 vote
1 answer

How to change default account in private ethereum network?

First list the accounts: > eth.accounts NOTE: Even ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
• 69,230 points
1,723 views
–1 vote
1 answer

How to add a static node to private ethereum network?

There are two ways to do this. 1. Configuring ...READ MORE

Jan 11, 2019 in Blockchain by Omkar
• 69,230 points
1,670 views
–1 vote
1 answer

setEtherbase() not working in geth

setEtherbase() is not a method of the personal ...READ MORE

Jan 17, 2019 in Blockchain by Omkar
• 69,230 points
1,394 views
0 votes
1 answer

How to get Node URL in private ethereum network?

You have already noticed that  admin.peers does ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
• 69,230 points
1,613 views
0 votes
0 answers

How can we write business data inside chaincode hyperleger fabric sdk java?

Feb 5, 2019 in Blockchain by Alam

recategorized Feb 5, 2019 by Vardhan 556 views
+1 vote
5 answers

Does Hyperledger remove asset actually remove anything?

Hyperledger remove asset doesn't actually "remove" the ...READ MORE

Jun 19, 2018 in Blockchain by charlie_brown
• 7,720 points
3,369 views
0 votes
1 answer

Call contract methods with web3 from newly created account

In fact, we can't just send transactions ...READ MORE

Sep 25, 2018 in Blockchain by digger
• 26,740 points
6,159 views
0 votes
1 answer

How to get account with ethers by default in ethereum private network?

Have you created an account before allocating ...READ MORE

Jan 9, 2019 in Blockchain by Omkar
• 69,230 points
1,569 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 4,729 views
0 votes
1 answer

Ethereum transaction not getting Updated

You have done everything right except for ...READ MORE

Jan 27, 2019 in Blockchain by Omkar
• 69,230 points
751 views
0 votes
3 answers

Hyperledger fabcar sample fabric error: sendPeersProposal - Promise is rejected: Error: Connect Failed

Open the datasources.json file and replace the grpcs:// with grpc://. This solution worked ...READ MORE

Apr 30, 2019 in Blockchain by Reshma
2,806 views
+1 vote
1 answer

Hyperledger Fabric: Got permission denied Docker daemon socket at unix:///var/run/docker.sock

You are getting this error probably because ...READ MORE

Nov 19, 2018 in Blockchain by Omkar
• 69,230 points
3,643 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
3,191 views
0 votes
1 answer

Not able to unbox truffle drizzle

It could be due to a broken ...READ MORE

Jan 9, 2019 in Blockchain by Omkar
• 69,230 points
1,474 views
0 votes
1 answer

How to check peer connectivity in ethereum private network?

You can use the net module to check the ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
• 69,230 points
1,421 views
0 votes
1 answer

How to sync private nodes in geth and testRPC locally?

HI. As much as I know, running ...READ MORE

Jan 16, 2019 in Blockchain by Omkar
• 69,230 points
1,149 views