Trending questions in Blockchain

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How does the consensus mechanism work for a SaaS based blockchain?

Blockchain doesn't have the client-server architecture that ...READ MORE

Aug 1, 2018 in Blockchain by Christine
 • 15,750 points • 1,696 views
0 votes
1 answer

How to modify h2 port in Corda for IntelliJ?

When you use IntelliJ, the nodes are ...READ MORE

Jul 27, 2018 in Blockchain by slayer
 • 29,370 points • 1,904 views
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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 • 2,325 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 • 2,006 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 • 1,689 views
0 votes
1 answer

Problem with deploying to a single organization Hyperledger Fabric

It appears to me that  the proposal is ...READ MORE

Aug 1, 2018 in Blockchain by Christine
 • 15,750 points • 1,687 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 • 1,971 views
0 votes
1 answer

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 • 2,172 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 • 1,876 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 • 2,161 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 • 1,911 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 • 2,463 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 • 2,770 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 • 2,639 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 • 2,510 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 • 2,141 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 • 2,545 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 • 2,024 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 • 1,741 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 • 2,530 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 • 2,264 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 • 3,466 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 • 1,662 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 • 2,508 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 • 1,599 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 • 2,286 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 • 2,264 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 • 3,093 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 • 2,708 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 • 4,305 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 • 1,844 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 • 2,660 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 • 2,371 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 • 2,783 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 • 1,882 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 • 1,794 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 • 1,824 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
 • 3,496 views
0 votes
2 answers

How to set permissions within a blockchain?

There are blockchains that allow defining permissions. ...READ MORE

Aug 28, 2018 in Blockchain by Michael
 • 2,499 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 • 1,834 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 • 1,657 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 • 2,027 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 • 1,693 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 • 1,972 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 • 2,677 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 • 2,115 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 • 1,795 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 • 3,742 views
0 votes
1 answer

Error: Error trying to ping. Error: Error trying to query business network. Error: Connect Failed

Run the following commandbefore updating: composer network start ...READ MORE

Jun 28, 2018 in Blockchain by Perry
 • 17,100 points • 2,886 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 • 2,322 views
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