Latest questions in Blockchain

0 votes
1 answer

How to retrieve data from a block to a blockchain?

web3.eth.getTransaction(txHash) will returns transaction details like blockHash, transactionIndex, ...READ MORE

Jun 27, 2018 in Blockchain by Perry
 • 17,100 points • 3,736 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 • 1,418 views
0 votes
1 answer

Permisssible platform suitable for C

There are many implementations of Blockchain like ...READ MORE

Jun 27, 2018 in Blockchain by Shashank
 • 10,400 points • 445 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
 • 69,210 points • 984 views
0 votes
1 answer

How should I set my mac for Installing Hyperledger Composer Playground?

Use the following link to install the ...READ MORE

Jun 27, 2018 in Blockchain by Perry
 • 17,100 points • 337 views
+2 votes
1 answer

What are the wallet path credentials for Web3j?

Follow the below steps: Go to the private ...READ MORE

Aug 2, 2018 in Blockchain by Omkar
 • 69,210 points • 1,515 views
+1 vote
1 answer

Can there be multiple Hyperledger Fabric CA servers in the same blockchain?

Yes, you can run multiple CA servers ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,210 points • 2,085 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
 • 69,210 points • 673 views
0 votes
1 answer

I wish to know about the data storage in blockchain

That string would be stored in the ...READ MORE

Jun 22, 2018 in Blockchain by Johnathon
 • 9,090 points • 455 views
0 votes
1 answer

In hyperledger, how many number of ordering node can take up a transaction?

There are two types to implement ordering: 1. ...READ MORE

Jun 25, 2018 in Blockchain by Omkar
 • 69,210 points
edited Jun 28, 2018 by Omkar • 892 views
0 votes
1 answer

Windows not able to recognize Monax command

You probably know this already but support ...READ MORE

Jun 22, 2018 in Blockchain by Johnathon
 • 9,090 points • 475 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 • 1,194 views
0 votes
1 answer

Error: Tendermint node crash

It's very simple. Just type in the ...READ MORE

Jun 21, 2018 in Blockchain by Christine
 • 15,790 points • 551 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 • 819 views
0 votes
1 answer

Not able to use IBM Blockchain services after Bluemix 1.0 update (Hyperledger 0.6)

The bluemix service was using an older ...READ MORE

Jun 21, 2018 in Blockchain by charlie_brown
 • 7,720 points • 567 views
0 votes
1 answer

How can I build a network map cluster in Corda?

Corda community is working to move towards ...READ MORE

Jun 20, 2018 in Blockchain by aryya
 • 7,450 points • 601 views
0 votes
1 answer

How to make my Dapp work on regular browsers?

There are ethereum supporting browsers like Metamask, ...READ MORE

Jun 20, 2018 in Blockchain by aryya
 • 7,450 points • 481 views
+14 votes
5 answers

Difference between hyperledger fabric and sawtooth?

Source: https://www.hyperledger.org/wp-content/uploads/2017/ ...READ MORE

Aug 29, 2018 in Blockchain by Anurag
 • 8,454 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 • 795 views
0 votes
1 answer

jQuery/ajax - two separate API requests with combined results

You can move the second ajax call ...READ MORE

Jun 19, 2018 in Blockchain by aryya
 • 7,450 points • 1,629 views
0 votes
1 answer

Web3j v3.3.1 : Error while generating compiled solidity smart contracts which returns array of struct

Solidity does not support returning structs in ...READ MORE

Jun 19, 2018 in Blockchain by aryya
 • 7,450 points • 1,413 views
0 votes
1 answer

Can we protect a Private Blockchain with a Public Blockchain and how?

I have recently reviewed Exonum framework (https://exonum.com/) ...READ MORE

Jun 19, 2018 in Blockchain by Perry
 • 17,100 points • 423 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 • 1,741 views
+1 vote
5 answers

Does Hyperledger remove asset actually remove anything?

Hyperledger remove asset doesn't actually "remove" the ...READ MORE

Jun 19, 2018 in Blockchain by charlie_brown
 • 7,720 points • 3,210 views
0 votes
1 answer

NPM Error While Installing Lisk Dependencies

Meet the lib sodium fails. You're using node ...READ MORE

Jun 19, 2018 in Blockchain by charlie_brown
 • 7,720 points • 510 views
0 votes
1 answer

Blockchain Usecase - Personal Management Records

1. Channels is a mechanism by which ...READ MORE

Jun 18, 2018 in Blockchain by Christine
 • 15,790 points • 619 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 • 1,266 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 • 1,170 views
0 votes
1 answer

Sawtooth Invalid Batch or Signature

The problem is in setting the batch ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 845 views
0 votes
1 answer

Web3j Transfer.sendFunds() returns Error “insufficient funds for gas * price + value”

DISCLAIMER. This may not necessarily be an answer to your ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 2,754 views
0 votes
1 answer

How one can implement blockchain for android development??

Essentially you need to understand what is ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 510 views
0 votes
1 answer

Not Able to register a user with Hyperledger-Fabric v1.1 preview

The error: "Certificate not found with AKI 'e729224e8b3f31784c8a93c5b8ef6f4c1c91d9e6e577c45c33163609fe40011' ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,648 views
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 • 385 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 • 1,140 views
0 votes
1 answer

Deploy API REST IBM Hyperledger Composer Blockchain (bad flag in substitute command: 'U' ERROR)

There is an error in that document. ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 516 views
0 votes
1 answer

I get the following error when I try to submit a transaction on the hyperleger playground

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

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 615 views
+6 votes
3 answers

Why don't we consider Git as a Blockchain?

Blockchain is not just any chain of any blocks. Blockchain is when there ...READ MORE

Sep 7, 2018 in Blockchain by Rowski
 • 3,078 views
+1 vote
2 answers

How to return value from a chaincode in Hyperledger Fabric?

Hyperledger Fabric supports only 2 types of ...READ MORE

Jun 13, 2018 in Blockchain by Perry
 • 17,100 points • 2,600 views
0 votes
1 answer

Does each DApp has its own separate Blockchain? Or can we develop multiple DApps on a single Blockchain platform?

A DApp is a decentralized Application. This ...READ MORE

Jun 11, 2018 in Blockchain by Christine
 • 15,790 points • 1,163 views
0 votes
1 answer

How to connect two instances of Hyperledger Fabric?

Before getting on with your question, let ...READ MORE

Jun 11, 2018 in Blockchain by Christine
 • 15,790 points • 970 views
+1 vote
1 answer

How can I add image into my Hyperledger instance

In your registry, you can Base64-ify your ...READ MORE

Jun 8, 2018 in Blockchain by aryya
 • 7,450 points • 1,652 views
0 votes
2 answers

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

Muchas gracias. ?Como puedo iniciar sesion? READ MORE

May 2, 2020 in Blockchain by aqowcmbevs
 • 2,168 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 • 609 views
0 votes
1 answer

How to get current block number in parity?

You can get the latest block number ...READ MORE

Jun 8, 2018 in Blockchain by Christine
 • 15,790 points • 1,222 views
0 votes
1 answer

PROTOBUF_INLINE_NOT_IN_HEADERS

I had the same problem on Ubuntu ...READ MORE

Jun 7, 2018 in Blockchain by Christine
 • 15,790 points • 870 views
0 votes
1 answer

Understanding Hyperledger transaction verification

 HL v0.x, the consensus process 'validates' transactions ...READ MORE

Jun 7, 2018 in Blockchain by Christine
 • 15,790 points • 886 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 • 1,298 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 • 559 views
0 votes
1 answer

What is the use of Ethereum's RLPx in Ethereum ecosystem?

So, RLPx is a protocol suite. It ...READ MORE

Jun 5, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,863 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 • 793 views
Page:

Most popular tags

"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.