Trending questions in Blockchain

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Ethereum Studio: Can't find Sandbox

The GitHub project site says that the image is ...READ MORE

Jul 20, 2018 in Blockchain by Christine
 • 15,750 points • 2,135 views
0 votes
1 answer

What is the process to Create Cryptocurrency for ICO?

No, you don’t have to issue the ...READ MORE

Jul 25, 2018 in Blockchain by slayer
 • 29,370 points • 1,922 views
0 votes
1 answer

I want to use Blockchain receive API without exchange rate

You are not using receive API you are using Exchange ...READ MORE

Aug 1, 2018 in Blockchain by Perry
 • 17,100 points • 1,638 views
0 votes
1 answer

Looking for a simple Blockchain PoC to implement on a office level

Hyperledger has been collecting some use cases, though not ...READ MORE

Jul 24, 2018 in Blockchain by aryya
 • 7,460 points • 1,951 views
0 votes
1 answer

Can i transfer Kraken to Poloniex?

You can use withdrawFunds method from the ...READ MORE

Jul 24, 2018 in Blockchain by slayer
 • 29,370 points • 1,946 views
0 votes
1 answer

How should I set my mac to install "hyperledger composer playground locally" ?

Install the pre-reqs https://hyperledger.github.io/composer/in ...READ MORE

Jul 21, 2018 in Blockchain by Christine
 • 15,750 points • 2,102 views
0 votes
1 answer

Not able to deploy smart contract on testrpc.

I attached to geth using the following ...READ MORE

Jul 23, 2018 in Blockchain by digger
 • 26,740 points • 1,983 views
0 votes
1 answer

How to create own coins in Blockchain Ethereum wallet?

To create own coins you have to ...READ MORE

Jul 26, 2018 in Blockchain by slayer
 • 29,370 points • 1,848 views
0 votes
1 answer

Hyperledger fabric ./byfn.sh -m up command hangs during execution

Run the following command: sudo docker stop $(docker ...READ MORE

Jul 30, 2018 in Blockchain by slayer
 • 29,370 points • 1,695 views
0 votes
1 answer

How to check Bitcoin Wallet ?

This can be done using Extended Public ...READ MORE

Jul 13, 2018 in Blockchain by Perry
 • 17,100 points • 2,397 views
0 votes
1 answer

How to use real world/live data in my smart contract?

You cant access/embed real world data using ...READ MORE

Jul 12, 2018 in Blockchain by digger
 • 26,740 points • 2,447 views
0 votes
1 answer

How can I build a hexadecimal block if I have all the needed information?

Here you have some articles about bitcoin ...READ MORE

Jul 21, 2018 in Blockchain by Christine
 • 15,750 points • 2,077 views
0 votes
1 answer

Can someone help me conceptualizing blockchain for supply chain demo?

I think you should take a step ...READ MORE

Jul 17, 2018 in Blockchain by Shashank
 • 10,400 points • 2,218 views
0 votes
1 answer

How to set up Hyperledger Fabric v0.6 network without docker?

Hyperledger Fabric v0.6 does not provide any ...READ MORE

Jul 9, 2018 in Blockchain by slayer
 • 29,370 points • 2,564 views
0 votes
1 answer

How to understand transaction verification in blockchain

They said it takes about 10 minutes ...READ MORE

Jul 17, 2018 in Blockchain by aryya
 • 7,460 points • 2,219 views
0 votes
1 answer

What is the maximum number of nodes in corda?

No, there is no restriction of he ...READ MORE

Jul 11, 2018 in Blockchain by slayer
 • 29,370 points • 2,478 views
+1 vote
2 answers

How do I access the api generated by hyperledger composer publicly?

IBM Bluemix is a platform that provides ...READ MORE

Jul 5, 2018 in Blockchain by slayer
 • 29,370 points • 2,688 views
0 votes
1 answer

Can we custom tokens on Ethereum?

Yes, it is possible. You need to ...READ MORE

Jul 31, 2018 in Blockchain by Mohini
 • 260 points • 1,612 views
0 votes
1 answer

how to modify smart contract template for self defined functionality

TL;DR; This code simply defines the start ...READ MORE

Aug 1, 2018 in Blockchain by aryya
 • 7,460 points • 1,542 views
0 votes
1 answer

Unable to create a Mist connection to a private Ethereum Blockchain.

You could do the following: 1. Start another ...READ MORE

Jul 26, 2018 in Blockchain by Perry
 • 17,100 points • 1,799 views
0 votes
1 answer

What happens to the short chain when the nodes follow the long chain?

This situation occurs every day in the ...READ MORE

Jul 16, 2018 in Blockchain by digger
 • 26,740 points • 2,207 views
0 votes
1 answer

Error in playground while committing transaction on the ledger

1. Is this transaction is trying to ...READ MORE

Jul 27, 2018 in Blockchain by shweta
 • 440 points • 1,732 views
0 votes
1 answer

Unable to request channel creation using Rest Api

I'd recommend taking a look at the ordering ...READ MORE

Jul 16, 2018 in Blockchain by Perry
 • 17,100 points • 2,201 views
0 votes
1 answer

Getting error while trying to submit a transaction on hyperledger playground

not enough information as to how you ...READ MORE

Jul 17, 2018 in Blockchain by Shashank
 • 10,400 points • 2,145 views
0 votes
1 answer

How to connect javascript to solidity/ethereum?

You can connect javascript to solidity by ...READ MORE

Jul 11, 2018 in Blockchain by digger
 • 26,740 points • 2,401 views
0 votes
1 answer

How can I integrate ethereum wallet on my site??

you can use web3 js API to ...READ MORE

May 29, 2018 in Blockchain by Perry
 • 17,100 points • 4,257 views
0 votes
1 answer

Is {from: thesponsor, value: 10000000, gas: 3000000} considered as a transaction object?

Yes, {from: thesponsor, value: 10000000, gas: 3000000} ...READ MORE

Jul 25, 2018 in Blockchain by digger
 • 26,740 points • 1,795 views
0 votes
1 answer

"const is reserved" parse error.

It could be an error because of ...READ MORE

Jul 6, 2018 in Blockchain by slayer
 • 29,370 points • 2,613 views
0 votes
1 answer

Çannot implement web3.eth.subscribe on Web3 version 1.0.0-beta.27

As the error suggests, pub/sub is not ...READ MORE

Jun 19, 2018 in Blockchain by Perry
 • 17,100 points
edited Jun 19, 2018 by Perry • 3,347 views
0 votes
1 answer

How to create tokens in smart contracts from node.js?

Any modification to the Ethereum Blockchain will ...READ MORE

Jun 27, 2018 in Blockchain by Shashank
 • 10,400 points • 3,027 views
0 votes
1 answer

how can i convert stub.GetTxTimestamp() to type string?

You can not directly convert the timestamp ...READ MORE

Jul 5, 2018 in Blockchain by digger
 • 26,740 points • 2,641 views
0 votes
1 answer

How to track changes of an object in exonum?

You have to describe each component in ...READ MORE

Jul 23, 2018 in Blockchain by slayer
 • 29,370 points • 1,828 views
0 votes
1 answer

Differences between the composer network and composer identity

'Composer Network' represents the business network entity. ...READ MORE

Jul 25, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,737 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 • 2,713 views
0 votes
1 answer

Can a hyperledger composer work without fabric installed?

The pre-requisites section of hyperledger composer explains ...READ MORE

Jul 24, 2018 in Blockchain by digger
 • 26,740 points • 1,771 views
0 votes
1 answer

How can I access the details of a given address from a blockchain?

There are two ways to actually do ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
 • 10,400 points • 2,326 views
0 votes
1 answer

Error in generating network sample.

I resolved this issue by downloading the ...READ MORE

Jul 26, 2018 in Blockchain by Perry
 • 17,100 points • 1,660 views
0 votes
1 answer

Can I use inherited contract in artifacts.require() statement?

Yes, this code will work just fine. ...READ MORE

Jul 27, 2018 in Blockchain by digger
 • 26,740 points • 1,613 views
0 votes
1 answer

How do I get the total amount sent to an address?

If you are using web3JS you can ...READ MORE

Jul 19, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,976 views
0 votes
1 answer

Getting error when i execute ./byfn.sh -m up command.

The error is caused because you're trying ...READ MORE

Jul 12, 2018 in Blockchain by slayer
 • 29,370 points • 2,250 views
0 votes
1 answer

How are unique public address generated in bitcoin?

In brief, the public addresses are generated ...READ MORE

Jul 16, 2018 in Blockchain by slayer
 • 29,370 points • 2,071 views
0 votes
1 answer

Do we require a specific condition when working with indices on solidity?

Your code is written correctly. require is intended to ...READ MORE

Jul 23, 2018 in Blockchain by Perry
 • 17,100 points • 1,766 views
0 votes
1 answer

How proof work prevents rebuilding of blockchain?

POS has the same idea as POW. ...READ MORE

Jul 24, 2018 in Blockchain by Shashank
 • 10,400 points • 1,742 views
0 votes
1 answer

How does the consensus happen in Saas based blockchain application?

I will be maintaining the database at ...READ MORE

Jul 20, 2018 in Blockchain by aryya
 • 7,460 points • 1,904 views
0 votes
1 answer

How read-write sets is used in hyperledger?

In Hyperledger, read-write sets are used during ...READ MORE

Jul 3, 2018 in Blockchain by digger
 • 26,740 points • 2,604 views
0 votes
2 answers

How to get notified when an event triggers on ethereum smart contract?

Here's a simple example for web3js 1.0.0.beta*: function handler ...READ MORE

Jun 8, 2018 in Blockchain by aryya
 • 7,460 points • 3,675 views
0 votes
1 answer

how can I save my nodejs blockchain??

point 1 and 2 are not immune ...READ MORE

Jul 24, 2018 in Blockchain by Shashank
 • 10,400 points • 1,727 views
0 votes
1 answer

How to use Rest API support in local development environment?

Rest API is not available for Hyperledger ...READ MORE

Jul 11, 2018 in Blockchain by slayer
 • 29,370 points • 2,256 views
+1 vote
3 answers

Is it possible to store data about arbitrary objects on the blockchain using smart contracts?

Basically you implement requested logic on by ...READ MORE

Aug 30, 2018 in Blockchain by Artem
 • 3,383 views
0 votes
1 answer

How to retrieve complete world state of hyperledger?

you can achieve this by iteration process ...READ MORE

Jul 5, 2018 in Blockchain by slayer
 • 29,370 points • 2,513 views
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