Latest questions in Blockchain

–1 vote
0 answers

how to npm install in node.js

Jan 12 in Blockchain by anonymous
• 170 points
38 views
+1 vote
0 answers

How can i made a ledger-system using hyperledger.

Jan 12 in Blockchain by anonymous
• 170 points
45 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/dev ...READ MORE

Jan 13 in Blockchain by Rhea
55 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
110 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 58 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
40 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 31 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
• 50,840 points
38 views
0 votes
0 answers
+1 vote
0 answers
+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
116 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
91 views
+1 vote
2 answers
+1 vote
0 answers

how to create a voting Dapp ?!

Hello i am student and i wanna ...READ MORE

Oct 6, 2019 in Blockchain by Aymen
• 130 points
152 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
82 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 94 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
117 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
320 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
157 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
95 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
171 views
0 votes
0 answers

how to Build Bitcoin address and balance database?

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

Jul 24, 2019 in Blockchain by Raj
• 180 points
80 views
+1 vote
0 answers
+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 23, 2019 in Blockchain by Ayush
• 180 points
382 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
151 views
+1 vote
0 answers
+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
250 views
+1 vote
1 answer

Multichain "Resource temporarily unavailable" error

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

Jul 9, 2019 in Blockchain by Olivia
52 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
60 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
84 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
194 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
50 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
• 13,070 points
53 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
182 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
135 views
0 votes
0 answers

How do we increase the amount of gas?

Jun 24, 2019 in Blockchain by Neha Agarwal
73 views
+1 vote
1 answer

Where to download the corda network bootstrapper 3.1 or 3.2 version for r3 corda?

Here are the steps to setup corda ...READ MORE

Jun 24, 2019 in Blockchain by Raghu
126 views
0 votes
0 answers
0 votes
0 answers

Network Parameter and additional node info file in R3 corda?

Is that network parameter and additional node ...READ MORE

Jun 21, 2019 in Blockchain by anonymous
81 views
0 votes
1 answer

Using public and private keys for Blockchain transaction

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

Jun 20, 2019 in Blockchain by Will
58 views
0 votes
1 answer

Symmetric key in cryptography

Yes, the same key is used to ...READ MORE

Jun 20, 2019 in Blockchain by Firoz
57 views
0 votes
0 answers

Couldn't find network parameters file and compatibility zone wasn't configured/isn't reachable

After ran this command java -jar network-bootstrapper-VERSION.jar --dir <nodes-root-dir>.The files is generated.After ...READ MORE

Jun 19, 2019 in Blockchain by anonymous
194 views
0 votes
0 answers

Is there any API for ether sent transaction in ethereum without using web3.js

I want to do a transaction (sent ...READ MORE

Jun 17, 2019 in Blockchain by vishal tyagi
77 views
+1 vote
0 answers

Can't call contract function in Remix in Web3 provider mode, but it works in Javascript VM

A simple contract for addition, an error ...READ MORE

Jun 15, 2019 in Blockchain by XHQ
164 views