Trending questions in Blockchain

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1 answer

Need to do pdf file to blockchain and how to do?

Hi @Sagara, Attaching the pdf directly to the blockchain ...READ MORE

Oct 19 in Blockchain by Gitika
• 41,720 points
38 views
0 votes
1 answer

PAYMENT ERRORS

Hello,@There, Regarding your issue I guess there can ...READ MORE

Oct 9 in Blockchain by Thomas Walenta
39 views
0 votes
2 answers

Chaincode Installation failed, Hyperledger Fabric

Hi, @Bhuwan, There must be an error in ...READ MORE

Oct 5 in Blockchain by Gitika
• 41,720 points
80 views
0 votes
2 answers

Code to change owner

Hi, @Wilson, U have to write the require ...READ MORE

Oct 5 in Blockchain by Rajiv
• 3,220 points
54 views
0 votes
2 answers

Getting error while Initialising the Blockchain

Hello, @Edureka, You have two options: Execute with sudo. This ...READ MORE

Sep 17 in Blockchain by Roshni
• 4,690 points
80 views
0 votes
1 answer

Solidity: Code to hide message sender address (msg.sender) when writing on a contract

Hey @Wilson, You can use a smart contract ...READ MORE

Sep 14 in Blockchain by Rajiv
• 3,220 points
142 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 in Blockchain by Arcadius
• 120 points
101 views
0 votes
0 answers

what coding language is this in for ethereum and does this work for trading if setup right?

code below: # #  Panoramix v4 Oct 2019 ...READ MORE

Aug 24 in Blockchain by squiggle
• 120 points
210 views
0 votes
1 answer

Javascript ES6 TypeError: Class constructor Client cannot be invoked without 'new'

Hello @kartik, In package.json you can use targets configuration with @babel/preset-env. ...READ MORE

May 5 in Blockchain by Niroj
• 67,020 points
4,899 views
0 votes
1 answer

What is the previous block hash of block #4390176 in Ethereum Blockchain

1,226,797,074,502,984,598,563 READ MORE

Sep 6 in Blockchain by Sayali
2,917 views
0 votes
2 answers

how save data from different account using web3.py to smart contract

Hey, @Amal, It will automatically take the address ...READ MORE

Jul 27 in Blockchain by Rajiv
• 3,220 points
163 views
0 votes
2 answers

Key Advantages of Using Blockchain in Banking

Hi, @blockchainhq, There are a few more advantages ...READ MORE

Jul 15 in Blockchain by Gitika
• 41,720 points
119 views
0 votes
0 answers

How do I apply Ethereum Private blockchain or Hyperledger Fabric to Healthcare data management/Drug Traceability?

I just need a lab practice guide ...READ MORE

Jul 3 in Blockchain by pauloshikoya
• 120 points

recategorized Jul 3 by Gitika 230 views
0 votes
1 answer

Blockchain Basic Questions

Hey, @Nikhil  1. A type of distributed ledger database ...READ MORE

Jun 30 in Blockchain by Gitika
• 41,720 points
172 views
0 votes
1 answer

My account is already an administrator but its giving the an error on denial of permission

Hi, @There, You can try this in your ...READ MORE

Jun 17 in Blockchain by Gitika
• 41,720 points
352 views
0 votes
1 answer

How to create an instance of contract in Truffle console?

Hi, @There, I would suggest you go through ...READ MORE

Jun 17 in Blockchain by Gitika
• 41,720 points
108 views
0 votes
0 answers

Attach two nodes on different machine via private blockchain (Ethereum)

I have seen many blogs regarding ways ...READ MORE

Jun 9 in Blockchain by Ritvik
• 120 points
117 views
0 votes
2 answers

is there any way of getting all data in hyperledger fabric before we start the ledger

Hey, @Harinishree, You can also do one thing, ...READ MORE

Jun 4 in Blockchain by Gitika
• 41,720 points
191 views
0 votes
1 answer

Channel fails to create Hyperledger Fabric

Hi, @Sara, I guess this error is happening ...READ MORE

May 26 in Blockchain by Gitika
• 41,720 points
141 views
0 votes
1 answer

If any etherium smart contract source code is not verified

To remove the “unverified” label, the human ...READ MORE

May 12 in Blockchain by Vikas Blockchained
638 views
0 votes
1 answer

Error: '.' is not recognized as an internal or external command,

Hello @kartik, Edit package.json and remove the ./. Change "start": "./node_modules/nodemon/bin/nodemon.js src/app.js" to "start": "nodemon ...READ MORE

May 5 in Blockchain by Niroj
• 67,020 points
882 views
+1 vote
1 answer
+1 vote
0 answers

Hyperledger fabric : unable to create channel on raspberry pi 4 with Raft ordering service

Hello, I am trying to setup an hyperledger ...READ MORE

May 12 in Blockchain by Manon
• 130 points
261 views
+2 votes
1 answer

Issue in Initialising the Blockchain

Hi, I am also getting the same ...READ MORE

Sep 17 in Blockchain by Edureka
• 200 points

reshown Sep 17 by Gitika 165 views
0 votes
0 answers

How I can check where the data is actually stored when we deploy blockchain?

How I can check where the data ...READ MORE

May 14 in Blockchain by Zara
• 140 points
157 views
0 votes
1 answer

hyperledger composer network is not starting

Hey, @Sudip, First thing you need to start ...READ MORE

May 12 in Blockchain by Gitika
• 41,720 points
253 views
0 votes
0 answers

Any blockchain developer available who could resolve my queries?

I am implementing a project in ethereum. ...READ MORE

May 14 in Blockchain by Zara
• 140 points
138 views
0 votes
1 answer

Can someone tell me how to solve the Hyperledger playground installation issue?

Hey, @Ratul, I would suggest using this command ...READ MORE

May 13 in Blockchain by Gitika
• 41,720 points
130 views
0 votes
1 answer

Can someone tell me how to solve the Hyperledger playground installation issue?

I used those commands but the couldn't ...READ MORE

May 5 in Blockchain by Ratul
• 180 points
125 views
0 votes
1 answer
0 votes
0 answers
0 votes
0 answers
0 votes
1 answer

Blockchain validation

Hey, @Rohan, Every node in the Bitcoin network ...READ MORE

Apr 20 in Blockchain by Gitika
• 41,720 points
83 views
0 votes
0 answers

how can i add more than one node to mining blocks ??

i created 6 nodes whit one node ...READ MORE

Apr 12 in Blockchain by Hicham
• 120 points
96 views
0 votes
1 answer

getting error while starting Hyperleger fabric network on Aws server

Hey, @Nithin, It seems like you have stopped containers ...READ MORE

Mar 30 in Blockchain by Gitika
• 41,720 points
343 views
+1 vote
3 answers

Removing double quotes from a string from JSON response in PHP

Just remove the json_encode call, and it should work: $resp ...READ MORE

Sep 12, 2018 in Blockchain by digger
• 26,680 points
19,196 views
0 votes
0 answers

How I can connect multiple physical machine with hyperledger fabric??

I want to connect my 3 computers ...READ MORE

Mar 12 in Blockchain by Md
• 120 points
173 views
+1 vote
1 answer

how to create a voting Dapp ?!

If you want to create your own ...READ MORE

Aug 3 in Blockchain by moshbhavika
• 140 points
366 views
0 votes
0 answers

Low_s canonical signature for bitcoin transaction

I have a transaction script and trying ...READ MORE

Mar 3 in Blockchain by anonymous
• 120 points
213 views
0 votes
0 answers

Is there any resource for hyper ledger fabric to learn?

Hi, I have searched all the google sites, ...READ MORE

Mar 2 in Blockchain by anonymous
• 120 points
181 views
0 votes
0 answers

Hyperledger Fabric: Average & Max Price FabCar

Hey, I'm using the fabcar project  (https://github.com/IBM/blockchain-application-using-fabric-java-sdk). I ...READ MORE

Feb 29 in Blockchain by pablobonet
• 120 points
143 views
0 votes
0 answers

Solidity: How i can return data from hash value ?

I have a solidity contract with two ...READ MORE

Feb 13 in Blockchain by simone
• 120 points
158 views
–1 vote
1 answer

how to npm install in node.js

This blog has a detailed step-wise explanation ...READ MORE

Mar 13 in Blockchain by Sirajul
• 58,130 points
138 views
+1 vote
2 answers

Error 500: mychannel has been migrated to new lifecycle. Chaincode instantiation error.

This error occured only because I had ...READ MORE

Jan 9 in Blockchain by Aditya
• 250 points
1,169 views