Latest questions in Blockchain

+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 • 1,141 views
+1 vote
0 answers

Is it possible for Chainlink to come off Ethereum and go onto another platform lke NEO or Stellar? Or would it require the entire blockchain be rebuilt onto the new platform?

I'm just trying to understand this whole ...READ MORE

Dec 27, 2019 in Blockchain by finnius
 • 130 points • 850 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 • 717 views
+1 vote
1 answer

Error: failed to create deliver client for orderer: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: context deadline exceeded

It is caused because of firewall restriction, ...READ MORE

Nov 2, 2022 in Blockchain by Prudhvi Krishna Menavalli
edited Mar 5 • 4,488 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 • 570 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 • 926 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 • 890 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
 • 2,055 views
+1 vote
0 answers

How can i can create different cards upon signup and also how can we manage them while login, in hyperledger composer?

Oct 14, 2019 in Blockchain by Vishnu
 • 130 points • 992 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 • 1,703 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
 • 1,152 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 • 1,439 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
 • 1,993 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
 • 2,247 views
+1 vote
0 answers

Our chaincode is by default invoking some other data stored in Fabcar, whereas we already created our own data in init ledger.

Aug 1, 2019 in Blockchain by Dipashri
 • 982 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
 • 2,006 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 • 784 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
 • 2,913 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 • 1,215 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 • 772 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 • 3,645 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 • 1,684 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
 • 1,148 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
 • 4,106 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
 • 941 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
 • 1,060 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
 • 918 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
 • 3,463 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
 • 811 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
 • 13,150 points • 1,096 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
 • 1,454 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
 • 1,325 views
0 votes
0 answers

How do we increase the amount of gas?

Jun 25, 2019 in Blockchain by Neha Agarwal
 • 824 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
 • 1,180 views
0 votes
0 answers

how can i integrate fog computing simulation tools and Blockchain for research purpose

Jun 21, 2019 in Blockchain by anonymous
 • 120 points • 725 views
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
 • 843 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
 • 1,275 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
 • 1,292 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 20, 2019 in Blockchain by anonymous
 • 2,101 views
0 votes
1 answer

If everybody on the network stores a copy of the ledger, can't someone distribute an infected ledger and thus spread viruses etc?

Hi @Noa! Even if everyone has a copy ...READ MORE

Jun 19, 2019 in Blockchain by Lisa
 • 1,404 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
 • 1,465 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
 • 2,737 views
0 votes
1 answer

how to connect a web browser with the hyperledger fabric running blockchain peer container please give answers with step by step commands

Hello, It is not possible to connect a ...READ MORE

May 26, 2020 in Blockchain by anonymous
 • 1,458 views
0 votes
0 answers

how to create a kafka broker in hyperledger fabric what are the files needed to modify in hyperledger fabric version 1.4 also say step by step commands

Jun 12, 2019 in Blockchain by rumaise
 • 683 views
+1 vote
2 answers

I get the following error while i run the command ./byfn.sh up. I have tried removing all the containers and updated every required version but still the same error

Not sure if this is still relevant ...READ MORE

Aug 22, 2019 in Blockchain by Shailaja
 • 160 points • 4,928 views
0 votes
1 answer

Trying to implement block-chain payment in website

There are many plugins that you can ...READ MORE

Jun 11, 2019 in Blockchain by Tina
 • 853 views
0 votes
2 answers

web3 accounts coming undefined

Try this :  web3.eth.getAccounts() READ MORE

Jul 23, 2020 in Blockchain by Manas
 • 150 points • 2,440 views
0 votes
1 answer

What is geth and solidity in Blockchain?

geth is a tool used to run a ...READ MORE

Jun 11, 2019 in Blockchain by Rishi
 • 3,037 views
0 votes
1 answer

Decentralisation and Smart contract

Hey, @Vijayaprasad! The decentralization in Blockchain refers ...READ MORE

Jun 6, 2019 in Blockchain by Omkar
 • 69,220 points • 1,192 views
+1 vote
1 answer

Error: failed to create deliver client: orderer client failed to connect to order.example.com:7050: failed to create new connection: context deadline exceeded

I am facing the some problem in ...READ MORE

Dec 14, 2019 in Blockchain by xyz
 • 210 points • 4,729 views
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