Latest questions in Blockchain

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

Apr 1, 2020 in Blockchain by Dinesh
 • 180 points • 2,992 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
 • 65,930 points • 2,114 views
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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 • 1,031 views
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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 • 658 views
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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 • 595 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 • 489 views
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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 • 949 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
 • 59,230 points • 501 views
+1 vote
0 answers

How can i made a ledger-system using hyperledger.

Jan 12, 2020 in Blockchain by anonymous
 • 190 points • 434 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
 • 1,126 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 • 3,492 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 9, 2020 in Blockchain by Aditya
 • 250 points
reshown Jan 9, 2020 by Kalgi • 1,451 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 • 900 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 • 309 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, 2020 in Blockchain by Kalgi
 • 52,350 points • 422 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 • 360 views
+1 vote
0 answers

I need to get throughput requirment is BlockSize 10, Transaction 200, transaction type Insert, Arrival Rates 2 to 25 tps

I am not getting ans, even I ...READ MORE

Nov 29, 2019 in Blockchain by Sudhanshu
 • 130 points • 319 views
+1 vote
0 answers

not getting real transaction ID only getting temp-transaction ID in fabric-sdk

I am using below code for submitting ...READ MORE

Nov 14, 2019 in Blockchain by laxman
 • 130 points • 567 views
+1 vote
0 answers

creation of channel

I am facing in creation channel, please ...READ MORE

Nov 12, 2019 in Blockchain by anonymous
 • 210 points • 549 views
+1 vote
2 answers

how to fetch data from excel (which has some 100 data)or csv file and use that bulk data in smart contract and validate

You can not directly import an excel/csv ...READ MORE

Oct 30, 2019 in Blockchain by Tina
 • 1,307 views
+1 vote
1 answer

how to create a voting Dapp ?!

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

Aug 3, 2020 in Blockchain by moshbhavika
 • 140 points • 1,144 views
+1 vote
1 answer

Can we pass string values to the contract which holds bytes 32 only?

A string is not byte32 and so ...READ MORE

Aug 26, 2019 in Blockchain by Rina
 • 753 views
+1 vote
0 answers

Can I change the network id in ganache GUI? Is it work for calling the functions in solidity?

Can I change the network id in ...READ MORE

Aug 16, 2019 in Blockchain by anonymous
edited Aug 19, 2019 by Omkar • 949 views
+1 vote
1 answer

Error while sending a transaction from Web3py to a Smart Contract in Remix

You get the revert error when a ...READ MORE

Dec 12, 2019 in Blockchain by Vivek
 • 1,382 views
+1 vote
1 answer

hyperledger fabric: can't find package: github.com/pkg/errors in GOPATH or GOROOT

Hey @aiga, try to add the package ...READ MORE

Aug 5, 2019 in Blockchain by Esha
 • 1,733 views
+2 votes
1 answer

Trying to instantiate chain code on channel

Looking at the error, it seems like ...READ MORE

Aug 1, 2019 in Blockchain by Jessica
 • 1,547 views
0 votes
0 answers

How to use mutual authentication without CA in hyperledger fabric

I want to use some certificateless mutual ...READ MORE

Jul 29, 2019 in Blockchain by behnaz
 • 120 points • 449 views
0 votes
1 answer

how to develop healthcare records using DApp on Blockchain?

Hi. As Healthcare will be a private ...READ MORE

Jul 26, 2019 in Blockchain by Esha
 • 1,835 views
0 votes
0 answers

how to Build Bitcoin address and balance database?

How to build Bitcoin Address and Balance ...READ MORE

Jul 25, 2019 in Blockchain by Raj
 • 180 points • 819 views
+1 vote
0 answers

I am trying to replace the fabric-CA with External-CA to work in keep fabric in production environment, in Hyper-ledger fabric any suggestions?

Hi  can, i know how you implemented ...READ MORE

Jul 23, 2019 in Blockchain by anonymous
edited Jul 23, 2019 • 368 views
+1 vote
1 answer

how to create channels with new orgs in Fabric? getting error: Attempted to include a member which is not in the consortium.

$: peer channel fetch config config_block.pb -o ...READ MORE

Jul 24, 2019 in Blockchain by Ayush
 • 180 points • 2,500 views
+1 vote
0 answers

Metamask popup on Server side (Express js) ?

So I have this problem when i ...READ MORE

Jul 15, 2019 in Blockchain by Dzaky
 • 130 points • 1,315 views
+1 vote
0 answers

How to Set Condition on apistub.getstateByRange(startkey,endkey) in Go chaincode of hyperledger fabric

actually i have 2 structure in my ...READ MORE

Jul 14, 2019 in Blockchain by Malik
 • 582 views
+2 votes
1 answer

how to convert hash160 to bitcoin address in python?

Hey @Raj. I use the following script. ...READ MORE

Jul 12, 2019 in Blockchain by Tanisha
 • 2,911 views
+1 vote
1 answer

Multichain "Resource temporarily unavailable" error

The command you have executed is used ...READ MORE

Jul 10, 2019 in Blockchain by Olivia
 • 459 views
0 votes
1 answer

In assymetric cryptography how and when the sender will share the public key with the receiver?

Consider this example: Suppose Bob wants to send ...READ MORE

Jul 3, 2019 in Blockchain by Sheila
 • 398 views
+1 vote
1 answer

Listing all Bitcoin Miners

Yes, you can list down all the ...READ MORE

Jul 3, 2019 in Blockchain by John
 • 428 views
0 votes
1 answer

How can I become a miner in Blockchain?

You need to download software to become ...READ MORE

Jul 3, 2019 in Blockchain by Raman
 • 3,033 views
0 votes
1 answer

Public and private keys created residing in laptop/mobile while initiating a transaction

You need to provide the receiver's public key ...READ MORE

Jul 3, 2019 in Blockchain by Rachit
 • 382 views
0 votes
0 answers

LIVE PODCAST THREAD** (#2 Are Smart contracts really the Future?)

Hey guys this is the link to ...READ MORE

Jun 28, 2019 in Blockchain by Vardhan
 • 13,200 points • 458 views
0 votes
0 answers

In R3 Corda I don't know to start the web server port in server?

In R3 Corda all the nodes are ...READ MORE

Jun 26, 2019 in Blockchain by anonymous
 • 645 views
0 votes
0 answers

Migrations ran out of gas

I have unboxed pet-shop. Then inside the ...READ MORE

Jun 25, 2019 in Blockchain by anonymous
 • 812 views
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