Trending questions in Blockchain

0 votes
1 answer

I need all Ethereum smart contracts

Have a look at EIP165. It allows you ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 402 views
0 votes
1 answer

Curl Script Usage in Ethereum Blockcypher's API

You should store and keep the private ...READ MORE

May 28, 2018 in Blockchain by Christine
 • 15,790 points • 1,195 views
0 votes
1 answer

How can I deploy a HelloWorld contract on my testrpc network?

The problem lies in the command: truffle migrate Your truffle migrate command ...READ MORE

Apr 27, 2018 in Blockchain by Perry
 • 17,100 points
edited Aug 10, 2018 by Omkar • 2,494 views
0 votes
1 answer

Issue deploying the business network using hyperledger composer

I had same issue. I created card ...READ MORE

Jun 5, 2018 in Blockchain by Johnathon
 • 9,090 points • 807 views
+1 vote
2 answers

How is Blockchain programming languages different than usual programming?

The programming syntax of most of the ...READ MORE

Mar 30, 2018 in Blockchain by Christine
 • 15,790 points • 896 views
0 votes
1 answer

Unknown MSP DEFAULT error query chaincode

./byfn.sh -m up After running the above command, ...READ MORE

Jun 8, 2018 in Blockchain by Christine
 • 15,790 points • 619 views
+1 vote
2 answers

Hyperledger - Can I have some instances on one network while on a Virtual Box?

Yes, you can connect multiple instances to ...READ MORE

Aug 1, 2018 in Blockchain by Omkar
 • 69,230 points • 719 views
0 votes
1 answer

Can I swap an ERC-20 token with a Neo NEP5 token using a smart contract?

Every Blockchain has a separate administration. So, it ...READ MORE

Jun 4, 2018 in Blockchain by Perry
 • 17,100 points • 723 views
0 votes
1 answer

Why am I getting a grp timeout while setting up a Hyperledger development?

This error usually means that Validation Peer ...READ MORE

Jun 7, 2018 in Blockchain by Christine
 • 15,790 points • 568 views
0 votes
1 answer

How can I synchronize smart contract on blockchain?

This is how it is on Blockchain. ...READ MORE

May 29, 2018 in Blockchain by Perry
 • 17,100 points • 949 views
+1 vote
1 answer

Which data structure to prefer to model a blockchain?

To start with, let me tell you ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 2,566 views
0 votes
1 answer

What happens to the blockchain currency when nodes gets disconnected?

After the resync of the network, the ...READ MORE

May 22, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,222 views
0 votes
1 answer

Is IPFS, blockchain a decentralized file system?

HTTP protocol is the most popular on ...READ MORE

May 31, 2018 in Blockchain by Shashank
 • 10,400 points • 782 views
0 votes
1 answer

How is a request sent from an app to a smart contract?

Yes, the contract is distributed by every node ...READ MORE

Jun 4, 2018 in Blockchain by Perry
 • 17,100 points • 578 views
0 votes
1 answer

How Bitcoin wallet find unspent transaction output(UTXOs)?

The wallet apps are connected to the ...READ MORE

May 22, 2018 in Blockchain by Shashank
 • 10,400 points • 1,087 views
0 votes
1 answer

What happen to the mining fee for the blocks that are stale?

As I understood the forks of the ...READ MORE

Jun 4, 2018 in Blockchain by Shashank
 • 10,400 points • 503 views
0 votes
1 answer

how do we register our assets in hyperledger?

First of all, the chaincode (or smart ...READ MORE

May 26, 2018 in Blockchain by Johnathon
 • 9,090 points • 908 views
0 votes
1 answer

How is the ledger kept consistent among differnt peers in blockchain?

Bitcoin doesn't guarantee that all ledgers become ...READ MORE

May 26, 2018 in Blockchain by Johnathon
 • 9,090 points • 898 views
+1 vote
1 answer

Getting issues while Sending signTransaction with web3.js

The chain ID for ropsten is 3. ...READ MORE

Mar 28, 2018 in Blockchain by Johnathon
 • 9,090 points • 3,357 views
+1 vote
1 answer

What are peers and how a user enrolls into a specific peer?

In fabric, there is an admin, he ...READ MORE

May 3, 2018 in Blockchain by Shashank
 • 10,400 points • 1,762 views
0 votes
1 answer

What could be the best term to use for the collection of contracts in a .sol file?

module - don't think so. Because module ...READ MORE

Jun 2, 2018 in Blockchain by Shashank
 • 10,400 points • 537 views
0 votes
1 answer

Can I secretly add numbers in a smart contract and only add sum?

In am not sure about that, but ...READ MORE

May 30, 2018 in Blockchain by Shashank
 • 10,400 points • 611 views
0 votes
1 answer

Account not listed in the Deploy Contract screen?

You need to get an initial allocated ...READ MORE

Jun 4, 2018 in Blockchain by Perry
 • 17,100 points • 371 views
0 votes
1 answer

What if Gas required in my program exceeds the limit of 3000000?

Going through your code, I noticed that  you ...READ MORE

May 29, 2018 in Blockchain by Perry
 • 17,100 points • 615 views
+1 vote
1 answer

What are the differences between coin and token?

Coins are cryptocurrencies that are independent and ...READ MORE

Jul 18, 2018 in Blockchain by Sahil
 • 623 views
0 votes
1 answer

where is ethereum contract instance state stored???

Migrating the state to a new version ...READ MORE

Jun 2, 2018 in Blockchain by Shashank
 • 10,400 points • 400 views
0 votes
1 answer

How can I simulate private bitcoin network with random peer discovery?

You can model the whatever network you ...READ MORE

May 29, 2018 in Blockchain by Johnathon
 • 9,090 points • 541 views
0 votes
1 answer

Why do we use virtual machine for running smart contracts.

You can write smart contracts in any ...READ MORE

May 23, 2018 in Blockchain by Johnathon
 • 9,090 points • 732 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 • 1,288 views
0 votes
1 answer

Can we say that Applications on hyperledger fabric are centralized?

In practice, you would expect every Org ...READ MORE

May 29, 2018 in Blockchain by Johnathon
 • 9,090 points • 469 views
+1 vote
1 answer

How can I connect to the specified nodes using IPFS?

You can actually connect to the specific ...READ MORE

Apr 25, 2018 in Blockchain by Christine
 • 15,790 points • 1,821 views
0 votes
1 answer

How do I use hyperledger fabric blockchain to build my own application?

To use fabric I would recommend you ...READ MORE

May 17, 2018 in Blockchain by Johnathon
 • 9,090 points • 924 views
+1 vote
1 answer

Can Blocks be reorganized in the blockchain?

In practical applications, invalid transactions can not ...READ MORE

Jul 18, 2018 in Blockchain by Varun
edited Aug 3, 2018 by Omkar • 527 views
0 votes
1 answer

How is storage space handled in hyperledger peer?

Every transaction is not stored by every ...READ MORE

May 11, 2018 in Blockchain by anonymous
 • 1,086 views
0 votes
1 answer

Can there be different smart contract with same logic or a master contract with all configuration?

It depends on the complexity of the ...READ MORE

May 23, 2018 in Blockchain by Johnathon
 • 9,090 points • 507 views
0 votes
1 answer

Does the contract hosting account owns ether that is being sent to contract too??

I dont think so. I've done a ...READ MORE

May 22, 2018 in Blockchain by Johnathon
 • 9,090 points • 458 views
0 votes
1 answer

Can someone pls explain the hyperledger consensus?

The multiple peers determine the validity of ...READ MORE

May 22, 2018 in Blockchain by Shashank
 • 10,400 points • 420 views
0 votes
1 answer

How can i create a simple P2P network on a blockchain?

To develop your own cryptocurrency, you need ...READ MORE

Apr 20, 2018 in Blockchain by Christine
 • 15,790 points • 1,756 views
0 votes
1 answer

How can I sync geth and testrpc private nodes locally?

node running on testrpc cannot be connected ...READ MORE

May 17, 2018 in Blockchain by Shashank
 • 10,400 points • 546 views
+1 vote
1 answer

How is ordering of transactions done in a block in hyperledger?

Consensus is the key concept for validating ...READ MORE

May 3, 2018 in Blockchain by Christine
 • 15,790 points • 1,049 views
+1 vote
1 answer

How do I develop enterprise solutions using hyperledger composer?

With IBM cloud you can use containers, ...READ MORE

May 15, 2018 in Blockchain by Shashank
 • 10,400 points • 464 views
+1 vote
1 answer

What is the best way to search for an item in blockchain?

All transactions and records in blockchain are ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 1,523 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 • 1,304 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 • 1,242 views
+1 vote
1 answer

Why is it so difficult to find a nonce while validating a block in Bitcoin?

A nonce is just "some arbitrary number". In ...READ MORE

Apr 11, 2018 in Blockchain by Perry
 • 17,100 points • 1,894 views
0 votes
1 answer

Can a blockchain be used to verify or store a document on the blockchain?

Bitcoin is decentralized payment syatem. It was ...READ MORE

May 10, 2018 in Blockchain by Johnathon
 • 9,090 points • 658 views
+1 vote
1 answer

How does a miner get to know that a transaction is verified by all the nodes?

Contrary to the popular belief, it is ...READ MORE

Mar 27, 2018 in Blockchain by Johnathon
 • 9,090 points • 2,532 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 • 1,270 views
+1 vote
1 answer

Transaction using Blockchain wallet APi

Each transaction requires a fee to be ...READ MORE

Jun 19, 2018 in Blockchain by Perry
 • 17,100 points • 478 views
0 votes
1 answer

How a transaction validity is verified in blockchain?

Blockchain has the records the of all ...READ MORE

May 11, 2018 in Blockchain by Johnathon
 • 9,090 points • 531 views
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