Most viewed questions in Blockchain

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Problem with installing testrpc using python-pip.

You are facing this error because you ...READ MORE

Aug 10, 2018 in Blockchain by slayer
• 29,360 points
908 views
0 votes
1 answer

npm hfc@0.6.2 not properly installing

this is harmless, the hfc module should ...READ MORE

Jul 24, 2018 in Blockchain by charlie_brown
• 7,720 points
908 views
0 votes
1 answer

JAVA Retrive current bitcoin price with JSON

You should start log Exceptions when you ...READ MORE

Feb 28, 2022 in Blockchain by Soham
• 9,700 points
907 views
0 votes
1 answer

Best database type to store data that will be used with a blockchain?

Storing just the hash on the blockchain ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
905 views
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1 answer

Getting error when i execute ./byfn.sh -m up command.

The error is caused because you're trying ...READ MORE

Jul 12, 2018 in Blockchain by slayer
• 29,360 points
905 views
0 votes
2 answers

Key Advantages of Using Blockchain in Banking

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

Jul 15, 2020 in Blockchain by Gitika
• 65,910 points
904 views
0 votes
1 answer

Private ethereum blockchain mining on a Raspberry Pi - is it possible?

There are some pretty good guides out ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
902 views
0 votes
0 answers

API - Convert Bitcoin Amount into USD with my Api

After apiv2.bitcoinaverage.com is not free anymore I ...READ MORE

Mar 2, 2022 in Blockchain by Aditya
• 7,680 points
901 views
0 votes
1 answer

Angular 4: not able to iterate over an array

Replace this : <div *ngFor="let price of prices"> ...READ MORE

Sep 3, 2018 in Blockchain by digger
• 26,740 points
901 views
0 votes
0 answers

hd wallet bip44 in js - how to create an address for a chain other than bitcoin?

I have a small script basically taken ...READ MORE

Mar 2, 2022 in Blockchain by Aditya
• 7,680 points
900 views
0 votes
1 answer

Can't import "blockchain.info" to Node.js.. Need help.

Aurelia is a client-side framework and blockchain ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 69,230 points
900 views
0 votes
1 answer

Sawtooth Invalid Batch or Signature

The problem is in setting the batch ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
900 views
+1 vote
1 answer

Deploy contract using solcjs

Try to add some typo and run ...READ MORE

Sep 26, 2018 in Blockchain by slayer
• 29,360 points
899 views
0 votes
1 answer

How to call smart contract methods from transactions?

You can do this using a wrapper. ...READ MORE

Aug 13, 2018 in Blockchain by slayer
• 29,360 points
899 views
0 votes
1 answer

What exactly is BigChainDB?

Technically, BigChainDB internally uses RethinkDB as a ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,400 points
896 views
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1 answer

Could I share ledger between channels in hyperledger?

You say that you want to use ...READ MORE

Aug 3, 2018 in Blockchain by Johnathon
• 9,090 points
894 views
0 votes
1 answer

What is sent to a non-validating notary service when corda transaction is sent?

The transaction is first filtered in the ...READ MORE

Jul 23, 2018 in Blockchain by digger
• 26,740 points
894 views
0 votes
1 answer

Hyperledger : Deploying chaincode successful. But, cannot query - says ResourceNotFound

The problem(from logging) is dial unix /var/run/docker.sock: connect: ...READ MORE

Jun 21, 2018 in Blockchain by charlie_brown
• 7,720 points
888 views
0 votes
0 answers

Blockchain API to determine transaction confirmations

I am trying to identify whether a ...READ MORE

Mar 1, 2022 in Blockchain by Soham
• 9,700 points
887 views
0 votes
1 answer

Hyperledger Fabric: Changing component item owner automatically with its parent

You can try something like this: /** * ...READ MORE

Nov 16, 2018 in Blockchain by Omkar
• 69,230 points
886 views
+1 vote
1 answer

In the Hyperledger Fabric architecture where is the SDK hosted?

Hyperledger client SDK is a component used ...READ MORE

Mar 27, 2018 in Blockchain by Christine
• 15,790 points
886 views
0 votes
1 answer

Error while running make command using Fabric 1.0.6

It's a known issue in go 1.9.4: https://github.com/golang/go/issues/23739 While ...READ MORE

Jun 27, 2018 in Blockchain by Perry
• 17,100 points
885 views
0 votes
1 answer

In a Blockchain, how difficult is it to modify the third to last block?

Technically, it's not difficult at all, all ...READ MORE

Apr 20, 2018 in Blockchain by Christine
• 15,790 points
885 views
0 votes
1 answer

Transaction Id in Bitcoin Blockchain

The TransactionId comes from sending the coin. ...READ MORE

Jul 13, 2018 in Blockchain by Christine
• 15,790 points
884 views
0 votes
1 answer

How do you obtain the transaction uuid after submitting an invoke transaction using the nodejs HFC

The results returned via the 'submitted' event ...READ MORE

Sep 14, 2018 in Blockchain by slayer
• 29,360 points
883 views
0 votes
1 answer

In IBM's Marble demo where are the transactions stored?

When using the Marbles tutorial, there is ...READ MORE

Jun 19, 2018 in Blockchain by Johnathon
• 9,090 points
883 views
0 votes
1 answer

How can I create multiple connection profiles and multiple nodes in hyperledger composer?

 If you want to learn more about ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,400 points
882 views
0 votes
1 answer

program can't start because cudart64_70.dll is missing

You might have missed out installing the ...READ MORE

Jan 29, 2019 in Blockchain by Omkar
• 69,230 points
881 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
880 views
0 votes
1 answer

Bitminter shows no progress but my system heated up and shutdown

After initialization of bitminter you won't be ...READ MORE

Jan 3, 2019 in Blockchain by Omkar
• 69,230 points
880 views
0 votes
2 answers

Hyperledger Fabric: invokeChaincode returns [Object object]

Replace  return shim.success(valString); with: return shim ...READ MORE

Nov 9, 2018 in Blockchain by Omkar
• 69,230 points
880 views
0 votes
1 answer

Not able to deploy smart contract to private network

This could happen due to 3 possible ...READ MORE

Jan 18, 2019 in Blockchain by Omkar
• 69,230 points
879 views
0 votes
1 answer

ERRO : Error trying to connect to local peer: grpc: timed out trying to connect

You need to use the correct port ...READ MORE

Sep 17, 2018 in Blockchain by slayer
• 29,360 points
879 views
0 votes
1 answer

How to install Magento Bitcoin Currency extension on linux box?

Follow these steps to install it: Copy files ...READ MORE

Aug 17, 2018 in Blockchain by slayer
• 29,360 points
879 views
0 votes
1 answer

Can't open a to big .csv file in python

You can't "split a file", but you can read ...READ MORE

Sep 3, 2018 in Blockchain by slayer
• 29,360 points
877 views
0 votes
1 answer

What are the differences between tendermint and hashgraph?

Hashgraph uses Superior distributed ledger technology. Hashgraph ...READ MORE

Apr 8, 2018 in Blockchain by Shashank
• 10,400 points
875 views
0 votes
1 answer

Can't install pyethereum module

The module's name is ethereum, not pyethereum. Using the ...READ MORE

Sep 27, 2018 in Blockchain by slayer
• 29,360 points
870 views
0 votes
2 answers

How can I make transactions to a blockchain from a remote device(like a cell phone)?

You can do this by developing a ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 69,230 points
868 views
0 votes
1 answer

Solidity mocha : address is not a contract error

Try the following: // Initialize contract variable with ...READ MORE

Oct 1, 2018 in Blockchain by digger
• 26,740 points
867 views
0 votes
0 answers

What happens to the ethereum mempool transaction of uncle and fork nodes

I understand that in Bitcoin network when ...READ MORE

Apr 8, 2018 in Blockchain by Christine
• 15,790 points
867 views
0 votes
1 answer

"Blocking waiting for a file lock on the registry index" after building parity from source

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

Aug 28, 2018 in Blockchain by Johnathon
• 9,090 points
864 views
0 votes
1 answer

Using web3swift to create raw transaction.

Here you go: var options = Web3Options.defaultOptions() options.gasLimit = ...READ MORE

Jul 31, 2018 in Blockchain by digger
• 26,740 points
864 views
0 votes
1 answer

Litecoin/Bitcoin how divide uint256 target value on difficulty in C++

This is the solution: void setdouble(double val) { ...READ MORE

Sep 12, 2018 in Blockchain by digger
• 26,740 points
863 views
0 votes
1 answer

Install testrpc on Linux

You can install testrpc using npm $ npm install ...READ MORE

Feb 28, 2019 in Blockchain by Chandu
862 views
0 votes
1 answer

How to update data in Corda?

Yes, in corda you can store data ...READ MORE

Jul 11, 2018 in Blockchain by digger
• 26,740 points
862 views
0 votes
1 answer

How to add peers on a running Hyperledger Fabric?

You can not use configtxlator tool for ...READ MORE

Jul 10, 2018 in Blockchain by slayer
• 29,360 points
861 views
0 votes
1 answer

Include real world data in smart contract

What you are looking for is an ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,400 points
859 views
0 votes
1 answer

What if I change Chaincode state in invokeChaincode?

The chaincode state is not changed when ...READ MORE

Jul 13, 2018 in Blockchain by slayer
• 29,360 points
857 views
0 votes
1 answer

How many people are mining bitcoins all over the world?

No, it's not possible to find out ...READ MORE

Jun 26, 2018 in Blockchain by Omkar
• 69,230 points
856 views
0 votes
1 answer

Web is not injected by metamask

You need to do import the Web3 ...READ MORE

Oct 3, 2018 in Blockchain by slayer
• 29,360 points
855 views