Trending questions in Blockchain

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1 answer

How to prevent the smart contract from being modified and deployed in the blockchain network?

To expand on Matthew's answer, each state ...READ MORE

Jul 6, 2018 in Blockchain by aryya
 • 7,460 points • 906 views
0 votes
1 answer

How many people are mining bitcoins all over the world?

No, it's not possible to find out ...READ MORE

Jun 26, 2018 in Blockchain by Omkar
 • 69,220 points • 1,322 views
0 votes
1 answer

Error connecting due to rpc error

In the previous version, this problem was ...READ MORE

Jul 6, 2018 in Blockchain by slayer
 • 29,370 points • 869 views
0 votes
1 answer

How to control a malicious user in hyperledger fabric?

Fabric is an implementation of blockchain. Blockchain ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,220 points • 1,168 views
0 votes
1 answer

Who is miners in smart contracts?

Proof of work is used as a ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,220 points • 994 views
0 votes
1 answer

Error: t: Instance org.acme.seller.Car#HW7722 missing required field oldOwner

This error occurs if you have added a ...READ MORE

Jun 21, 2018 in Blockchain by Christine
 • 15,790 points
edited Jun 21, 2018 by Christine • 1,506 views
0 votes
1 answer

Hyperledge fabric v0.6 querying states between a period range

The Hyperledge fabric v0.6 does not provide ...READ MORE

Jul 4, 2018 in Blockchain by digger
 • 26,740 points • 940 views
0 votes
1 answer

How is computational and electricity wastage be avoided other than successful bitcoin miner?

What you are describing is an inherent ...READ MORE

Jul 14, 2018 in Blockchain by Shashank
 • 10,400 points • 537 views
0 votes
1 answer

Use of command : ./teardownFabric.sh

Note that if you've run the teardown ...READ MORE

Jul 6, 2018 in Blockchain by Perry
 • 17,100 points • 815 views
0 votes
1 answer

Can't import "blockchain.info" to Node.js.. Need help.

Aurelia is a client-side framework and blockchain ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,220 points • 1,199 views
0 votes
2 answers

Why does not India consider Bitcoin as a legal tender?

to be specific there are few logical ...READ MORE

Jul 3, 2018 in Blockchain by Priyaj
 • 58,020 points • 928 views
0 votes
1 answer

How to change "gasLimit" on Azure private blockchain?

Before deploying your network on Azure you ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,220 points • 926 views
+1 vote
2 answers

How can I use blockhain for storing a proof of a document such as an image?

Yes, you're right. Saving entire image in ...READ MORE

Aug 28, 2018 in Blockchain by hakusaro
 • 948 views
0 votes
2 answers

How can I make transactions to a blockchain from a remote device(like a cell phone)?

You can do this by developing a ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,220 points • 1,131 views
0 votes
1 answer

"could not find test.properties" error in Hyperledger v1.0

There is no java sdk for your ...READ MORE

Jul 5, 2018 in Blockchain by digger
 • 26,740 points • 831 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
 • 1,690 views
0 votes
1 answer

Error while running make command using Fabric 1.0.6

It's a known issue in go 1.9.4: https://github.com/golang/go/issues/23739 While ...READ MORE

Jun 27, 2018 in Blockchain by Perry
 • 17,100 points • 1,192 views
0 votes
1 answer

Changing block time on Quorum.

They are two commands you can use ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,220 points • 1,173 views
0 votes
1 answer

IBM Blockchain cant retrieving multiple rows from table

You can not use the older implementation ...READ MORE

Jul 5, 2018 in Blockchain by digger
 • 26,740 points • 788 views
0 votes
1 answer

Geth account password on command line

You've got the following two ways to create ...READ MORE

May 29, 2018 in Blockchain by Perry
 • 17,100 points • 2,348 views
0 votes
1 answer

difference between running docker image in and outside of vagrant

Most people recommend to run docker containers ...READ MORE

Jul 5, 2018 in Blockchain by digger
 • 26,740 points • 758 views
0 votes
1 answer

Generic put and get in hyperledger fabric

For this, you have to write a ...READ MORE

Jul 6, 2018 in Blockchain by digger
 • 26,740 points • 707 views
0 votes
1 answer

Handling connection of new nodes in Decentralized Chatting application.

Libp2p handles discovery and connection of nodes ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,220 points • 999 views
0 votes
1 answer

IRS demo Scheduled Event - InitiationHandler

The TODO you are looking for has ...READ MORE

Jul 6, 2018 in Blockchain by slayer
 • 29,370 points • 694 views
0 votes
1 answer

"Blocking waiting for file lock on the registry index"

Use the following command: rm -rf ~/.cargo/registry/index/* Or you ...READ MORE

Jun 18, 2018 in Blockchain by Christine
 • 15,790 points • 1,463 views
0 votes
1 answer

How to enable authentication in hyperledger Angular application

Try npm install -g passport-github READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,546 views
0 votes
1 answer

How to define different privacy for different users in Fabric 1.0?

The privacy restriction to particular peers in ...READ MORE

Jul 6, 2018 in Blockchain by digger
 • 26,740 points • 682 views
0 votes
1 answer

How to hold back KYC reward until the end of the ICO Crowdsale?

Your contract contains two functions - the payable function which ...READ MORE

Jul 4, 2018 in Blockchain by Christine
 • 15,790 points • 791 views
0 votes
1 answer

How can I create a blockchain for keeping records?

​You can use an already existing Blockchain. ...READ MORE

Jun 27, 2018 in Blockchain by Christine
 • 15,790 points • 1,061 views
0 votes
1 answer

How ordering nodes synchronize work?

To prevent time-based retention and prevent expiring ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,220 points • 769 views
0 votes
1 answer

Network issue while testing Chaincode.

You can do the following things: You can ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,220 points • 760 views
0 votes
1 answer

How to make transactions without creating assets in multichain?

To transfer your Mycoins, you can make ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,220 points • 755 views
0 votes
1 answer

Issue to run curl command in windows 7 Docker Quickstart Terminal

Actually, the issue is more likely that ...READ MORE

Jun 27, 2018 in Blockchain by aryya
 • 7,460 points • 1,015 views
0 votes
1 answer

What path should I give for credentials in web3j?

WalletUtils.loadCredentials can be buggy, I would recommend ...READ MORE

Jun 27, 2018 in Blockchain by Shashank
 • 10,400 points • 1,036 views
0 votes
1 answer

How do I implement Blockchain in my project

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

Jun 27, 2018 in Blockchain by Shashank
 • 10,400 points • 1,033 views
0 votes
1 answer

How to search inside List for a specific value?

You can amend your ORM wrapper such that ...READ MORE

Jun 27, 2018 in Blockchain by Christine
 • 15,790 points • 976 views
0 votes
1 answer

How to store picture(s) in a hyperledger blockchain channel

You can hold images as encrypted characters ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,439 views
0 votes
1 answer

Can't install remote HTTP chaincode

Fabric 1.0 does not support remote paths ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,220 points • 951 views
+1 vote
1 answer

Does the client know which peer approves/supports its transaction in Hyperledger Fabric?

Yes, client is aware of the endorsing ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,220 points • 893 views
0 votes
1 answer

"stateHash" vs. "previousBlockHash" in blockchain.

A statehash is the hash of the ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,220 points • 848 views
0 votes
2 answers

Hyperledger Fabric Bluemix not accepting logins.

The error is caused because your certificate ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,220 points • 792 views
0 votes
1 answer

Getting world state by value

Worldstate level storage works at the {key,value} ...READ MORE

Jun 27, 2018 in Blockchain by aryya
 • 7,460 points • 871 views
0 votes
1 answer

How to read a state after writing it into a chaincode?

Data that is 'written' in chaincode is ...READ MORE

May 28, 2018 in Blockchain by Perry
 • 17,100 points • 2,149 views
+1 vote
1 answer

What are the differences between the hyperledger and Blockchain?

To answer your first query.. Blockchain is ...READ MORE

Apr 5, 2018 in Blockchain by anonymous
 • 4,396 views
0 votes
1 answer

What is Blockchain?

Understanding Blockchain: Like Galia Benartzi says: Blockchain is ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,220 points • 761 views
0 votes
1 answer

Blockchain/decentralized apps development intro

If you are looking for books, try ...READ MORE

Jul 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 588 views
0 votes
1 answer

How can I get into the development of blockchain decentralized applications?

try Microsoft Blockchain as a service, they ...READ MORE

Jun 30, 2018 in Blockchain by Shashank
 • 10,400 points • 700 views
0 votes
0 answers

Identification of purchased product

I have created coins on test network.Now ...READ MORE

Jul 6, 2018 in Blockchain by charlie_brown
 • 7,720 points • 471 views
0 votes
1 answer

Hyperledger : Deploying chaincode successful. But, cannot query - says ResourceNotFound

The problem(from logging) is dial unix /var/run/docker.sock: connect: ...READ MORE

Jun 21, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,076 views
0 votes
1 answer

In IBM's Marble demo where are the transactions stored?

When using the Marbles tutorial, there is ...READ MORE

Jun 19, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,120 views
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