Most viewed questions in Blockchain

0 votes
1 answer

How to make a class that fits Blockchain.info Json?

Hey, I found a simple solution for ...READ MORE

Sep 18, 2018 in Blockchain by digger
 • 26,740 points • 1,443 views
0 votes
1 answer

Fatal error while installing web3 node.

Try to add git config by executing ...READ MORE

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 1,441 views
0 votes
1 answer

How to create a contract in truffle?

The command you are using to create ...READ MORE

Dec 11, 2018 in Blockchain by Omkar
 • 69,230 points • 1,439 views
+1 vote
1 answer

How immutability is achieved in hyperledger fabric?

Since it is a private blockchain platform, ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 1,438 views
0 votes
0 answers

Attach two nodes on different machine via private blockchain (Ethereum)

I have seen many blogs regarding ways ...READ MORE

Jun 9, 2020 in Blockchain by Ritvik
 • 120 points • 1,435 views
0 votes
1 answer

How do I query Blockchain bitcoin locally?

You could use json RPC provided by ...READ MORE

Apr 19, 2018 in Blockchain by Christine
 • 15,790 points • 1,434 views
0 votes
1 answer

How to make sure transactions take no fee in a private Ethereum blockchain?

In a private ethereum network you have ...READ MORE

Mar 26, 2018 in Blockchain by Christine
 • 15,790 points
edited Mar 26, 2018 by Christine • 1,434 views
0 votes
1 answer

How do nodes communicate with each other in hyperledger?

First let me tell you that there ...READ MORE

Jul 17, 2018 in Blockchain by slayer
 • 29,360 points • 1,432 views
0 votes
1 answer

Hyperledger Fabric: Error: Error getting (myc) orderer endpoint: Error endorsing GetConfigBlock

First of all please note, that during ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,230 points • 1,431 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 • 1,430 views
0 votes
1 answer

Hyperledger Fabric: Could not resolve all dependencies for configuration

First, build the chaincode using gradle build. You should ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,230 points • 1,430 views
+1 vote
1 answer

What are the key functional differences between Hyperledger Composer and Fabric Javascript SDK?

Hyperledger Composer is an application development framework ...READ MORE

Apr 11, 2018 in Blockchain by Perry
 • 17,100 points • 1,430 views
0 votes
1 answer

Hyperledger Fabric: "No go in PATH" error.

The error is because the go path ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,230 points • 1,429 views
0 votes
1 answer

Hyperledger Composer: not able to install Hyperledger composer-cli

Try setting the PATH like this, export PATH="/usr/local/share/npm/bin:$PATH" Now run the ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,230 points • 1,428 views
0 votes
1 answer

Hyperledger Fabric: error on outputChannelCreateTx: Cannot define a new channel with no Application section

Try defining or referencing the application in ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,230 points • 1,426 views
0 votes
1 answer

How to monitor Ethereum private network?

geth should be started with --metrics. try the ...READ MORE

Jul 11, 2018 in Blockchain by slayer
 • 29,360 points • 1,424 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 • 1,418 views
0 votes
0 answers

how to sign bitcoin psbt with ledger?

I'm trying to sign a PSBT transaction ...READ MORE

Mar 9, 2022 in Blockchain by Soham
 • 9,700 points • 1,407 views
0 votes
1 answer

Where is the hyperlewdger fabric endorsement policy stored?

I don't know exactly where is the ...READ MORE

Jul 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,405 views
+1 vote
1 answer

Can I mine a specific transaction on ethereum?

On a public ethereum network it is ...READ MORE

Apr 24, 2018 in Blockchain by Shashank
 • 10,400 points
edited Oct 6, 2021 by Sarfaraz • 1,399 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 • 1,397 views
0 votes
1 answer

How is consensus reached when there are only two peers in Hyperledger Fabric?

The consensus is achieved in the ordering ...READ MORE

Jul 5, 2018 in Blockchain by digger
 • 26,740 points • 1,394 views
0 votes
1 answer

PHP Bitcoin validate from form

isValid($addr, $version) $addr: A bitcoin address $version: The ...READ MORE

Sep 3, 2018 in Blockchain by slayer
 • 29,360 points • 1,393 views
0 votes
2 answers

how save data from different account using web3.py to smart contract

Hey, @Amal, It will automatically take the address ...READ MORE

Jul 28, 2020 in Blockchain by Rajiv
 • 8,910 points • 1,389 views
0 votes
1 answer

Hyperledger Fabric v1.0 setup on multiple machines

You would be able to host hyperledger fabric ...READ MORE

Oct 23, 2018 in Blockchain by Perry
 • 17,100 points • 1,388 views
0 votes
1 answer

Required parameter missing: account error

You need to swap out the place ...READ MORE

Aug 30, 2018 in Blockchain by slayer
 • 29,360 points • 1,387 views
+1 vote
1 answer

Can I setup hyperledger composer on multiple nodes?

To deploy your network on multiple nodes, ...READ MORE

Jul 25, 2018 in Blockchain by digger
 • 26,740 points • 1,387 views
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 • 1,386 views
0 votes
1 answer

how to get modification history of asset?

You can use GetHistoryForKey() API as shown ...READ MORE

Jul 9, 2018 in Blockchain by digger
 • 26,740 points • 1,385 views
0 votes
1 answer

How to input realtime data from google sheets into urlfetch google scripts?

Based on your title I hope to ...READ MORE

Oct 12, 2018 in Blockchain by Perry
 • 17,100 points • 1,382 views
+1 vote
1 answer

What'd be the best database to store data on blockchain?

To read and add data you can ...READ MORE

Apr 25, 2018 in Blockchain by Christine
 • 15,790 points • 1,382 views
0 votes
2 answers

is there any way of getting all data in hyperledger fabric before we start the ledger

Hey, @Harinishree, You can also do one thing, ...READ MORE

Jun 4, 2020 in Blockchain by Gitika
 • 65,910 points • 1,381 views
0 votes
1 answer

"[RuntimeException] The "-t" option does not exist" error in Hyperledger composer.

This command runs on composer-cli. Have you ...READ MORE

Nov 21, 2018 in Blockchain by Omkar
 • 69,230 points • 1,381 views
0 votes
1 answer

How to compute SHA256 hash for bitcoin header

header_hex = "02000000aaf8ab82362344f49083ee4edef795362cf135293564c4070000000000000000c009bb6222e9bc4cdb8f26b2e8a2f8d163509691a4038fa692abf9a474c9b21476800755c02e17181fe6c1c3" # Decode header hex into ...READ MORE

Aug 31, 2018 in Blockchain by digger
 • 26,740 points • 1,381 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
 • 1,380 views
+1 vote
1 answer

How blockchain node behaves upon receiving a new block when previous block wasn't acquired?

A node will ask for block number ...READ MORE

Mar 26, 2018 in Blockchain by Perry
 • 17,100 points • 1,371 views
0 votes
1 answer

How to get a list of Coinbase CryptoCurrency Coins

The following code: import requests ...READ MORE

Apr 8, 2022 in Blockchain by Rahul
 • 9,680 points • 1,369 views
0 votes
1 answer

Can one contract own tokens of another contract?

Yes, contracts can own tokens. The transaction you ...READ MORE

Oct 17, 2018 in Blockchain by Christine
 • 15,790 points • 1,365 views
0 votes
1 answer

How to use local binance smart chain lightclient to access the blockchain with web3.js?

So the answer is that I was ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
 • 9,680 points • 1,364 views
0 votes
1 answer

How to round a number down to 8 decimal places if its over 8 decimal places in Javascript

Try it in this way: function nrOfDecimals(number) { ...READ MORE

Sep 12, 2018 in Blockchain by slayer
 • 29,360 points • 1,363 views
+1 vote
1 answer

how to create a voting Dapp ?!

If you want to create your own ...READ MORE

Aug 3, 2020 in Blockchain by moshbhavika
 • 140 points • 1,362 views
0 votes
1 answer

How can i integrate Omnet++ with ethereum ?? or is there any other simulator which can do this??

You can use Hive Validator. Using this, you ...READ MORE

Apr 9, 2019 in Blockchain by Omkar
 • 69,230 points • 1,362 views
0 votes
1 answer

How do I develop a supply chain DApp on Blockchain?

Either of the ways is acceptable but ...READ MORE

May 30, 2018 in Blockchain by Perry
 • 17,100 points • 1,358 views
0 votes
1 answer

How to develop peer to peer network in hyperledger fabric?

There are two ways you can do ...READ MORE

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 1,355 views
+1 vote
1 answer

Car lease demo database location in IBM blockchain

Firstly, yes you can change the default DB ...READ MORE

Jun 7, 2018 in Blockchain by Christine
 • 15,790 points • 1,354 views
–1 vote
1 answer

How to list ethereum accounts in RPC?

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

Jan 10, 2019 in Blockchain by Omkar
 • 69,230 points • 1,352 views
+1 vote
1 answer

What happened on deploy, invoke and query in Hyperledger chaincode?

1. Deploy: During Deploy the chaincode is written onto ...READ MORE

Apr 26, 2018 in Blockchain by Christine
 • 15,790 points • 1,352 views
0 votes
1 answer

Hyperledger on Kubernetes - How can Kubernetes be aware of Chaincode container

I have been investigating the same issue ...READ MORE

Oct 22, 2018 in Blockchain by Christine
 • 15,790 points • 1,349 views
0 votes
1 answer

How do I submit multiple transaction in a block?

There can only be one block at ...READ MORE

May 10, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,349 views
0 votes
1 answer

How to solve “Package 'ethereum' has no installation candidate” error?

This error might have occurred because your ...READ MORE

Aug 8, 2018 in Blockchain by slayer
 • 29,360 points • 1,348 views
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