Trending questions in Blockchain

–1 vote
1 answer

Not able to compile truffle project

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

Jan 17 in Blockchain by Omkar
• 67,620 points
192 views
0 votes
1 answer

Not able to deploy smart contract to private network

This could happen due to 3 possible ...READ MORE

Jan 18 in Blockchain by Omkar
• 67,620 points
41 views
0 votes
1 answer

“geth attach” command shows error: Fatal: Unable to attach to remote geth

Seems like the geth.ipc file is not present in ...READ MORE

Jan 16 in Blockchain by Omkar
• 67,620 points
118 views
0 votes
1 answer

Truffle migrate Server Error

Seems like truffle didn't find a server. ...READ MORE

Jan 18 in Blockchain by Omkar
• 67,620 points
24 views
–1 vote
1 answer

Geth miner not working

Hi. miner.start() gives no output. So, when the output ...READ MORE

Jan 16 in Blockchain by Omkar
• 67,620 points
146 views
0 votes
1 answer

Testrpc can't find log handlers

This doesn't usually happen, maybe the log ...READ MORE

Jan 18 in Blockchain by Omkar
• 67,620 points
21 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 in Blockchain by Omkar
• 67,620 points
91 views
–1 vote
1 answer

Truffle migrate network error

When you are running truffle on a ...READ MORE

Jan 18 in Blockchain by Omkar
• 67,620 points
34 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 16 in Blockchain by Omkar
• 67,620 points
101 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 in Blockchain by Omkar
• 67,620 points
37 views
0 votes
1 answer

geth personal.newAccount() shows password error

You have to pass the password as ...READ MORE

Jan 16 in Blockchain by Omkar
• 67,620 points
30 views
–1 vote
1 answer

setEtherbase() not working in geth

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

Jan 16 in Blockchain by Omkar
• 67,620 points
30 views
0 votes
2 answers

Truffle compile: Cant find module error

You can install babel-register and try again. ...READ MORE

Feb 19 in Blockchain by Loki
177 views
0 votes
1 answer

HyperLedger Fabric and Multichain - difference & different use cases

MULTICHAIN: It is a Permissioned Blockchain. It doesn't implement ...READ MORE

Dec 28, 2018 in Blockchain by Omkar
• 67,620 points
748 views
–1 vote
1 answer

How to connect two different nodes in private ethereum network?

To connect two nodes, you can use ...READ MORE

Jan 9 in Blockchain by Omkar
• 67,620 points
202 views
0 votes
1 answer

How to interact with blockchain from web application?

You can use the Web3.js library to interact ...READ MORE

Jan 11 in Blockchain by Omkar
• 67,620 points
64 views
0 votes
1 answer

Why is geth --fast faster in downloading the Blockchain?

When you use the --fast flag to download the Blockchain, ...READ MORE

Jan 10 in Blockchain by Omkar
• 67,620 points
90 views
0 votes
3 answers

Hyperledger-fabric not working with docker swarm

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

Aug 20, 2018 in Blockchain by Perry
• 17,020 points
743 views
0 votes
1 answer

Why to use libraries over Json-RPC to interact with Blockchain?

Though Json-RPC provides methods to interact with ...READ MORE

Jan 11 in Blockchain by Omkar
• 67,620 points
33 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
1,217 views
0 votes
1 answer

Not able to unbox truffle drizzle

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

Jan 9 in Blockchain by Omkar
• 67,620 points
117 views
0 votes
1 answer

How to get IP address of peer connected in private ethereum network?

To get these details, you can use ...READ MORE

Jan 10 in Blockchain by Omkar
• 67,620 points
55 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 in Blockchain by Omkar
• 67,620 points
27 views
0 votes
1 answer

How to set miner threads outside geth console?

Yes, you can set the miner threads ...READ MORE

Jan 9 in Blockchain by Omkar
• 67,620 points
70 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 in Blockchain by Omkar
• 67,620 points
24 views
0 votes
1 answer

admin.peer not working

There is a typo in your command. ...READ MORE

Jan 10 in Blockchain by Omkar
• 67,620 points
20 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 9 in Blockchain by Omkar
• 67,620 points
90 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 in Blockchain by Omkar
• 67,620 points
51 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 10 in Blockchain by Omkar
• 67,620 points
40 views
0 votes
1 answer

Not able to send ethers in private ethereum network

Your account is locked by default due ...READ MORE

Jan 9 in Blockchain by Omkar
• 67,620 points
29 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 9 in Blockchain by Omkar
• 67,620 points
61 views
–1 vote
1 answer

How to list ethereum accounts in RPC?

You can use the following command to ...READ MORE

Jan 9 in Blockchain by Omkar
• 67,620 points
44 views
0 votes
2 answers

Hyperledger: Cello Operator Dashboard stuck at loading

This may be due to some inconsistency ...READ MORE

Mar 12 in Blockchain by Pikvik
145 views
–1 vote
1 answer

How to import an account in private ethereum network?

 When you create a new account, the ...READ MORE

Jan 9 in Blockchain by Omkar
• 67,620 points
26 views
+1 vote
4 answers

Trying to connect to Cryptocompare's websocket stream using socketIO from a Python client

The reason might be that the the socketio ...READ MORE

Aug 6, 2018 in Blockchain by Perry
• 17,020 points
630 views
+1 vote
8 answers

How to solve “x509: ECDSA verification failure” error?

Before you execute the  composer runtime install -c ...READ MORE

Jul 29, 2018 in Blockchain by digger
• 26,550 points
669 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
• 26,550 points
1,148 views
–1 vote
1 answer

Latest block number in Bitcoin

You can get the current block number ...READ MORE

Jan 7 in Blockchain by Omkar
• 67,620 points
42 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
• 67,620 points
1,088 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
1,693 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
• 29,170 points
1,103 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
• 29,170 points
882 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 in Blockchain by Hyperledger hater
190 views
+1 vote
5 answers

How to solve "truffle: command not found" error in blockchain?

First try restarting the system and then ...READ MORE

Jul 16, 2018 in Blockchain by slayer
• 29,170 points
934 views
0 votes
3 answers

How to solve “VM Exception while processing transaction: revert” error?

I am using windows 7. Any solution ...READ MORE

Apr 30 in Blockchain by Rajesh
941 views
–1 vote
1 answer

User Identity management on Ethereum Blockchain

User Identity management can be done via ERC725 ...READ MORE

Dec 28, 2018 in Blockchain by Omkar
• 67,620 points
351 views
0 votes
1 answer

Bitminter shows no progress but my system heated up and shutdown

After initialization of bitminter you won't be ...READ MORE

Jan 3 in Blockchain by Omkar
• 67,620 points
43 views
+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
860 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 in Blockchain by Shir
675 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
• 67,620 points
672 views