Most viewed questions in Blockchain

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How to create Quorum rawTransaction?

Unfortunately this capability is not currently supported ...READ MORE

Aug 17, 2018 in Blockchain by Shashank
• 10,400 points
590 views
0 votes
1 answer

SHA256 Hash doesn't match the one listed on Bitcoin Wiki

The problem occurring here is that you ...READ MORE

Feb 28, 2022 in Blockchain by Soham
• 9,700 points
589 views
0 votes
0 answers

I got stuck in Blockchain Course. Please Help Me!

Please help me I got stuck in ...READ MORE

Sep 6, 2020 in Blockchain by Arcadius
• 120 points
589 views
0 votes
1 answer

How to generate coin address using bitcoin-ruby?

The only difference between the addresses is ...READ MORE

Aug 29, 2018 in Blockchain by slayer
• 29,350 points
588 views
0 votes
1 answer

Why we should create two connection profiles for one organization, i.e 1. Org1 only and Org1 and Org2 ?

The need for the distinct Org1 and ...READ MORE

Aug 6, 2018 in Blockchain by aryya
• 7,450 points
588 views
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1 answer

Hyperledger Fabric 1.0 how to maintain privacy from OSNs?

Yes, OSNs can see all the transaction ...READ MORE

Jul 2, 2018 in Blockchain by Omkar
• 69,230 points
588 views
0 votes
1 answer

Is it possible to claim BCH without knowing private key?

You can't claim BCH without knowing private ...READ MORE

Sep 5, 2018 in Blockchain by Christine
• 15,790 points
587 views
0 votes
1 answer

Getting error while building Bitcoind on MAC OS

First of all try building a non-GUI ...READ MORE

Aug 20, 2018 in Blockchain by slayer
• 29,350 points
587 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
• 29,350 points
587 views
0 votes
1 answer

Hyperledger Fabric : How to initialise a 2D array in .cto file?

You could try something like this, with ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
• 69,230 points
586 views
0 votes
1 answer

How can I take the required info and send it to a div in the html page?

window.onload=function(){ var anima = document.getElementById("crypto"); var ret = document.getElementById("btn"); ret.addEventListener("click",function(){ var ...READ MORE

Sep 6, 2018 in Blockchain by digger
• 26,740 points
586 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
585 views
0 votes
1 answer

Is it possible to setup private ethereum network for creating applications??

yes, ethereum is an open source platform ...READ MORE

Apr 18, 2018 in Blockchain by Christine
• 15,790 points
585 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
584 views
0 votes
1 answer

How can i read headers of blockchain in multichain?

You could use a recent feature known ...READ MORE

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

Hyperledger fabric node sdk deploy.js example failing

Have you installed couchdb? Install couchdb as ...READ MORE

Sep 17, 2018 in Blockchain by slayer
• 29,350 points
583 views
0 votes
1 answer

How is running the asset_management.go different from running a simple chaincode like chaincode_example02.go

The chaincode workflow you mentioned is correct, ...READ MORE

Aug 3, 2018 in Blockchain by charlie_brown
• 7,720 points
583 views
0 votes
2 answers

Trying to issue tokens on testnet with python API

By looking at - documentation here I think you ...READ MORE

Sep 17, 2018 in Blockchain by Khush
582 views
0 votes
1 answer

Hyperledger Composer error in transaction

Check that you have declare the function ...READ MORE

Jul 21, 2018 in Blockchain by shweta
• 440 points
582 views
0 votes
1 answer

In PBFT view change what happens to committed operations after a valid snapshot?

I think that those messages are executed ...READ MORE

Jul 27, 2018 in Blockchain by aryya
• 7,450 points
581 views
0 votes
1 answer

How to display State Information to a list of participants dynamically?

The if condition mentioned below will never ...READ MORE

Jul 23, 2018 in Blockchain by Omkar
• 69,230 points
580 views
0 votes
1 answer

Not able to create contracts in truffle

It seems like you have files missing that ...READ MORE

Dec 11, 2018 in Blockchain by Omkar
• 69,230 points
579 views
0 votes
1 answer

IBM Container Service blockchain deployment error.

This error might be caused because of ...READ MORE

Jul 10, 2018 in Blockchain by digger
• 26,740 points
577 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
576 views
0 votes
1 answer

Why do bitcoin uses UTXO model? What are the advantages UTXO mechanism provides out of the box?

Basically, Bitcoin nodes maintain a set of ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
575 views
0 votes
1 answer

How will I know the result of Fabric Transaction from application client?

When a transaction happens, a proposal response ...READ MORE

Feb 5, 2019 in Blockchain by Omkar
• 69,230 points
575 views
–1 vote
1 answer

Unable to create account in geth

Well, that's not how you create a ...READ MORE

Dec 28, 2018 in Blockchain by Omkar
• 69,230 points
575 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
• 29,350 points
575 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
• 69,230 points
575 views
0 votes
1 answer

How do I change default service names in Corda Demobench?

Each Corda node individually advertises the services ...READ MORE

Aug 14, 2018 in Blockchain by Perry
• 17,100 points
574 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
• 7,450 points
574 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
574 views
0 votes
1 answer

HyperLedger Composer: Failed to load connector module “composer-connector-embedded” for connection profile “testprofile”

First, update your devDependencies in package.json "devDependencies": { ... "composer-admin": ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
• 69,230 points
573 views
0 votes
1 answer

How to handle memory and processor limitations of nodes in blockchain?

Yes, that's a valid concern. The Bitcoin ...READ MORE

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

How to use bitcoin price as place holder in php?

You can do it by providing an ...READ MORE

Aug 21, 2018 in Blockchain by digger
• 26,740 points
570 views
0 votes
1 answer

Hyperledger Fabric: peer creation no ordering service endpoint created error

You have to pass an orderer in ...READ MORE

Nov 15, 2018 in Blockchain by Omkar
• 69,230 points
569 views
0 votes
1 answer

Decorators in Hyperledger Composer Modeling Language

Define you CustomAsset like mentioned below and ...READ MORE

Sep 19, 2018 in Blockchain by slayer
• 29,350 points
568 views
0 votes
1 answer

Different unicode versions on various devices

Apparently this is not possible since you ...READ MORE

Aug 29, 2018 in Blockchain by Christine
• 15,790 points
568 views
0 votes
1 answer

Trying to implement block-chain payment in website

There are many plugins that you can ...READ MORE

Jun 11, 2019 in Blockchain by Tina
567 views
0 votes
1 answer

How to change Endorsement policies

Well the good news is that it ...READ MORE

Jul 18, 2018 in Blockchain by charlie_brown
• 7,720 points
567 views
0 votes
1 answer

Testrpc can't find log handlers

This doesn't usually happen, maybe the log ...READ MORE

Jan 18, 2019 in Blockchain by Omkar
• 69,230 points
566 views
0 votes
1 answer

How to open bitcoin-qt wallet with bitcoinj?

I found this issue solved at the ...READ MORE

Aug 24, 2018 in Blockchain by slayer
• 29,350 points
566 views
0 votes
1 answer

Cant make transactions in bitcoind.

Fist you should encrypt your wallet: bitcoin-cli encryptwallet ...READ MORE

Aug 23, 2018 in Blockchain by slayer
• 29,350 points
565 views
0 votes
1 answer

How can merkle trees help validate the content of a block in a blockchain

As long as they are centralized entities ...READ MORE

Feb 28, 2022 in Blockchain by Soham
• 9,700 points
563 views
0 votes
1 answer

How to connect to already running go ethereum client using mist Ubuntu

Hey, you can solve the issue by using sudo ...READ MORE

Sep 18, 2018 in Blockchain by digger
• 26,740 points
562 views
+3 votes
1 answer

When I ran truffle init, I got this error:

Hey there @Davidala! The error says that it ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
• 69,230 points
561 views
0 votes
1 answer

Hyperledger Composer: How to update a contract after it is saved?

Try this and see if this works: /** * ...READ MORE

Nov 9, 2018 in Blockchain by Omkar
• 69,230 points
560 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
559 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
558 views