Latest questions in Blockchain

0 votes
2 answers

Chaincode Installation failed, Hyperledger Fabric

I had the same issue. I had ...READ MORE

Feb 15, 2022 in Blockchain by Pranitha Sanda
edited Mar 5 • 5,955 views
0 votes
2 answers

Code to change owner

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

Oct 5, 2020 in Blockchain by Rajiv
 • 8,870 points • 2,110 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, 2020 in Blockchain by Roshni
 • 10,480 points • 3,758 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, 2020 in Blockchain by Rajiv
 • 8,870 points • 2,283 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 • 842 views
0 votes
1 answer

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

Hi there, I dont know about ethereum, but ...READ MORE

Jan 4, 2021 in Blockchain by Achuth
 • 150 points • 2,678 views
0 votes
2 answers

Key Advantages of Using Blockchain in Banking

Immutability: One of the main features of blockchain ...READ MORE

Apr 7, 2021 in Blockchain by Denis
edited Mar 5 • 1,321 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 28, 2020 in Blockchain by Rajiv
 • 8,870 points • 1,702 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, 2020 in Blockchain by pauloshikoya
 • 120 points
recategorized Jul 3, 2020 by Gitika • 1,573 views
0 votes
1 answer

Blockchain Basic Questions

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

Jun 30, 2020 in Blockchain by Gitika
 • 65,770 points • 1,422 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, 2020 in Blockchain by Gitika
 • 65,770 points • 1,974 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, 2020 in Blockchain by Gitika
 • 65,770 points • 2,188 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, 2020 in Blockchain by Ritvik
 • 120 points • 1,668 views
0 votes
1 answer

Channel fails to create Hyperledger Fabric

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

May 26, 2020 in Blockchain by Gitika
 • 65,770 points • 2,530 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, 2020 in Blockchain by Gitika
 • 65,770 points • 1,710 views
0 votes
1 answer

Hyperledger Fabric starting ./startFabric.sh Error: proposal failed (err: rpc error: code = Unavailable desc = transport is closing)

1=grpc@1.24.2     2= i have ...READ MORE

May 21, 2020 in Blockchain by Sagar
 • 180 points • 4,426 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, 2020 in Blockchain by Zara
 • 140 points • 739 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, 2020 in Blockchain by Zara
 • 140 points • 1,422 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, 2020 in Blockchain by Gitika
 • 65,770 points • 1,542 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 13, 2020 in Blockchain by Manon
 • 130 points • 1,554 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, 2020 in Blockchain by Vikas Blockchained
 • 6,636 views
0 votes
1 answer

hyperledger composer network is not starting

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

May 13, 2020 in Blockchain by Gitika
 • 65,770 points • 1,702 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, 2020 in Blockchain by Gitika
 • 65,770 points • 1,070 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, 2020 in Blockchain by Niroj
 • 82,800 points • 10,118 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, 2020 in Blockchain by Niroj
 • 82,800 points • 23,195 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, 2020 in Blockchain by Ratul
 • 180 points • 1,251 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, 2020 in Blockchain by Edureka
 • 120 points • 1,019 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, 2020 in Blockchain by Gitika
 • 65,770 points • 4,487 views
0 votes
1 answer

Blockchain validation

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

Apr 20, 2020 in Blockchain by Gitika
 • 65,770 points • 788 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, 2020 in Blockchain by Hicham
 • 120 points • 760 views
0 votes
1 answer

Could not assemble transaction, err proposal response was not successful, error code 500, msg chaincode registration failed: container exited with 0

Hey, @Nithin, Can you please post your peer ...READ MORE

Apr 9, 2020 in Blockchain by Gitika
 • 65,770 points • 4,413 views
0 votes
1 answer

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

0xc253f0917b33b2947b4d9cdb7ad656cc0233ef1781984384284f3a91810a8a36 Th ...READ MORE

Oct 14, 2023 in Blockchain by Rishav Utkarsh
edited Mar 5 • 10,351 views
0 votes
0 answers

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

Apr 1, 2020 in Blockchain by Dinesh
 • 180 points • 4,362 views
0 votes
0 answers

Inspect and explore the transaction with the hash :0x5edb69874d0900d8857468fbe53715cc1a58137709b8b70e46299bf10983dc09

Apr 1, 2020 in Blockchain by Dinesh
 • 180 points • 1,884 views
0 votes
0 answers

What is the address of the sender in this transaction:0x5edb69874d0900d8857468fbe53715cc1a58137709b8b70e46299bf10983dc09

Apr 1, 2020 in Blockchain by Dinesh
 • 180 points • 2,777 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, 2020 in Blockchain by Gitika
 • 65,770 points • 3,622 views
0 votes
0 answers

modify both abac.go and abac_test.go by adding entity called 'C' to the existing flow and allow for a transaction between A->C and A->B

I need to add another entity in ...READ MORE

Mar 23, 2020 in Blockchain by utthara
 • 120 points • 974 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, 2020 in Blockchain by Md
 • 120 points • 1,546 views
0 votes
0 answers

Low_s canonical signature for bitcoin transaction

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

Mar 3, 2020 in Blockchain by anonymous
 • 120 points • 1,125 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, 2020 in Blockchain by anonymous
 • 120 points • 1,232 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

Mar 1, 2020 in Blockchain by pablobonet
 • 120 points • 853 views
0 votes
0 answers

Solidity: How i can return data from hash value ?

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

Feb 14, 2020 in Blockchain by simone
 • 120 points • 1,376 views
+1 vote
1 answer

How I can Develope a chaincode for generating network admins private and public key using certification authority for each organisation and Is it possible?

You can follow the steps provided in ...READ MORE

Feb 13, 2020 in Blockchain by Edureka
 • 140 points • 1,229 views
–1 vote
1 answer

how to npm install in node.js

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

Mar 13, 2020 in Blockchain by Sirajul
 • 59,190 points • 988 views
+1 vote
0 answers

How can i made a ledger-system using hyperledger.

Jan 12, 2020 in Blockchain by anonymous
 • 190 points • 965 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, 2020 in Blockchain by Rhea
 • 1,766 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, 2020 in Blockchain by Aditya
 • 250 points • 4,854 views
+1 vote
0 answers

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

I have been successfully able to cover ...READ MORE

Jan 9, 2020 in Blockchain by Aditya
 • 250 points
reopened Nov 12, 2024 by Neelam • 2,030 views
+2 votes
1 answer

Issue in Initialising the Blockchain

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

Sep 17, 2020 in Blockchain by Edureka
 • 200 points
reshown Sep 17, 2020 by Gitika • 1,994 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, 2020 in Blockchain by vt
 • 210 points
closed Jan 6, 2020 by Kalgi • 666 views
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