Trending questions in Blockchain

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2 answers

Key Advantages of Using Blockchain in Banking

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

15 hours ago in Blockchain by Gitika
 • 31,470 points • 14 views
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0 answers

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

The project is a group of Ethereum ...READ MORE

1 day ago in Blockchain by anonymous
 • 120 points
edited 1 day ago by Gitika • 16 views
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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 • 49 views
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1 answer

Blockchain Basic Questions

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

Jun 30 in Blockchain by Gitika
 • 31,470 points • 82 views
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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
 • 35,660 points • 2,036 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
 • 31,470 points • 52 views
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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
 • 31,470 points • 33 views
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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 • 62 views
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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
 • 31,470 points • 105 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
 • 31,470 points • 93 views
+1 vote
1 answer

while I am hitting servies in node js in hyperledger fabric 2.0 I am getting issues like Invalid common connection profile due to missing configuration data

Hey, @Harinishree, With error "Invalid network configuration due ...READ MORE

May 14 in Blockchain by Gitika
 • 31,470 points • 90 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 • 106 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 • 93 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
 • 152 views
+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 • 101 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
 • 31,470 points • 61 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
 • 31,470 points • 56 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
 • 35,660 points • 273 views
0 votes
0 answers

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

Mar 31 in Blockchain by Dinesh
 • 180 points • 1,679 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 • 86 views
0 votes
0 answers

Received error response from peer: message=failed to execute transaction 33b63361e1ce528c334ecf9ef70af2c9136c0fcc444d1ead9d24b5bae8c6dc57

Received this error while submitTransaction executes in ...READ MORE

May 4 in Blockchain by Edureka
 • 120 points • 67 views
0 votes
1 answer

I face problem while running hyperledger fabric's sample application "build your first network" byfn.sh giving time out while chaincode installation.

Hey, @Sudip, Please check if the peer container ...READ MORE

Apr 27 in Blockchain by Gitika
 • 31,470 points • 142 views
0 votes
1 answer

Blockchain validation

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

Apr 20 in Blockchain by Gitika
 • 31,470 points • 54 views
0 votes
0 answers

What is the total difficulty for block #4390176 in Ethereum Blockchain

Mar 31 in Blockchain by Dinesh
 • 180 points • 603 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 • 64 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
 • 31,470 points • 209 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 • 97 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 • 129 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 • 112 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 • 98 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 • 100 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
 • 54,260 points • 111 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 • 832 views
+1 vote
0 answers

Error 500 during instantiation of chaincode for commercial-paper example. [closed]

I am following this tutorial on setting ...READ MORE

Jan 8 in Blockchain by Aditya
 • 250 points
reshown Jan 9 by Kalgi • 445 views
+1 vote
1 answer

how to creat a privaet blockchain network using ganache step by step process

This might help, check it out https://www.codementor.io/@swader/de ...READ MORE

Jan 13 in Blockchain by Rhea
 • 188 views
+1 vote
0 answers

How can i made a ledger-system using hyperledger.

Jan 12 in Blockchain by anonymous
 • 190 points • 106 views
+2 votes
0 answers

Issue in Initialising the Blockchain

Whenever Iam executing the following command: /home/vashist/go-ethereum/build/bin/geth --datadir ...READ MORE

Jan 5 in Blockchain by vt
 • 210 points • 101 views
+2 votes
0 answers

Doubt regarding Initialising a Blockchain [closed]

Whenever Iam trying to run the command: /home/vashist/go-ethereum/build/bin/geth ...READ MORE

Jan 5 in Blockchain by vt
 • 210 points
closed Jan 6 by Kalgi • 60 views
+1 vote
1 answer

I have a doubt regarding the installation of Go Lang on my Linux system.

Hi @vt. This command should do the job: apt ...READ MORE

Jan 2 in Blockchain by Kalgi
 • 51,890 points • 75 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
 • 26,670 points • 15,097 views
0 votes
0 answers

i am new to hperledger fabric in the offical docs they relased 2.0 version i am geeting error related to tls handshake

when i create channel it showing error READ MORE

Dec 11, 2019 in Blockchain by vineeth
 • 150 points • 105 views
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