Most viewed questions in Blockchain

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How can I verify my bitcoin transaction independently?

Transactions are first, verified by the miners, and ...READ MORE

Apr 8, 2022 in Blockchain by Rahul
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452 views
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Hyperledger composer: network start gives no output

You are using -v as your option ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
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452 views
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How to generate addresses from a file rather than specific phase

If the file with the passwords is ...READ MORE

Sep 7, 2018 in Blockchain by MI3
452 views
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How to avoid Ethereum Token Name redundancy?

I dont think you can do anything ...READ MORE

Jul 12, 2018 in Blockchain by digger
• 26,740 points
452 views
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Getting error during “truffle migrate” for an ethereum contract on testrpc

Can you just try to give network ...READ MORE

Sep 27, 2018 in Blockchain by slayer
• 29,350 points
450 views
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Blockchain Hyperledger private key not able to send coins

From the code you posted, if(whichType == TX_SCRIPTHASH){//pay ...READ MORE

Sep 14, 2018 in Blockchain by digger
• 26,740 points
450 views
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Hyperledger fabric: vagrant up in devenv fails

This is a problem with vagrant 1.9.3: You ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
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449 views
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How to get results by running the voting code on Ethereum?

In mist go to your contract and ...READ MORE

Sep 18, 2018 in Blockchain by digger
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449 views
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1 answer

JSON valid numerical param in Perl

Use 0.0 + sprintf('%.8f', $btc), 0.0 + $data{'amount'} READ MORE

Sep 11, 2018 in Blockchain by digger
• 26,740 points
449 views
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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
448 views
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Permisssible platform suitable for C

There are many implementations of Blockchain like ...READ MORE

Jun 27, 2018 in Blockchain by Shashank
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448 views
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Blockchair - dump files does not contain decimal bitcoin values

The result in the dump file is ...READ MORE

Mar 31, 2022 in Blockchain by Rahul
• 9,670 points
447 views
0 votes
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sellprice and buyprice fixing in smart contract.

It is due to the fact you ...READ MORE

Oct 17, 2018 in Blockchain by Christine
• 15,790 points
447 views
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Does the contract hosting account owns ether that is being sent to contract too??

I dont think so. I've done a ...READ MORE

May 22, 2018 in Blockchain by Johnathon
• 9,090 points
446 views
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Not able to send payments using Blockchain API.

Try the following code. It should help ...READ MORE

Jul 31, 2018 in Blockchain by slayer
• 29,350 points
445 views
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CryptoCurrency NODE.js Web3 Ethereum - Can't connect to TESTRPC

Your connection is working. To return an ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
444 views
0 votes
1 answer

How does the architecture of a blockchain search work?

Hey there! There is no architecture called ...READ MORE

Mar 28, 2019 in Blockchain by Suman
444 views
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1 answer

When trying to Start the membersrvc, its not responding!

You should start membersrvc at first in ...READ MORE

Sep 19, 2018 in Blockchain by Christine
• 15,790 points
444 views
0 votes
1 answer

How to decrypt result of query when using the Hyperledger Client SDK for Node.js

In this case, it is just a ...READ MORE

Sep 18, 2018 in Blockchain by slayer
• 29,350 points
444 views
0 votes
1 answer

Implementing Giveaways in Blockchain

I have found a similar question. The ...READ MORE

Aug 17, 2018 in Blockchain by digger
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444 views
0 votes
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Why visual studio 2015 can not open blockchain api project on github

If you look in the solution file ...READ MORE

Jul 24, 2018 in Blockchain by aryya
• 7,450 points
444 views
+1 vote
1 answer

How do I develop enterprise solutions using hyperledger composer?

With IBM cloud you can use containers, ...READ MORE

May 15, 2018 in Blockchain by Shashank
• 10,400 points
444 views
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0 answers
0 votes
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Why is it downloading the blocks when I am trying to deploy the ethereum private network?

Once you have installed the Ethereum wallet, ...READ MORE

May 3, 2018 in Blockchain by Shashank
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443 views
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1 answer

I am not able to change array elements globally

Remove the constant modifier from getArray(). constant functions do not write state ...READ MORE

Oct 9, 2018 in Blockchain by Omkar
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442 views
0 votes
1 answer

How does the consensus happen in Saas based blockchain application?

I will be maintaining the database at ...READ MORE

Jul 20, 2018 in Blockchain by aryya
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442 views
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0 answers
0 votes
1 answer

How to return data on execution of invoke function?

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

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

How proof work prevents rebuilding of blockchain?

POS has the same idea as POW. ...READ MORE

Jul 24, 2018 in Blockchain by Shashank
• 10,400 points
439 views
0 votes
0 answers

Blake2b-512 with ED25519 in PHP with NanoSalt library (Nano Crypto)

I have been trying to generate a Nano ...READ MORE

Mar 4, 2022 in Blockchain by Soham
• 9,700 points
438 views
0 votes
1 answer

What is the mean Hash Encryption?

Hash encryption is a form of providing ...READ MORE

Dec 4, 2018 in Blockchain by Omkar
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438 views
0 votes
1 answer

Bitcoin - BitGO - Save all wallet objects into Array of Objects

 After noticing your following code: docs.forEach(function(address) { console.log(address); var ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
437 views
0 votes
1 answer

How to choose which function is called first in Node Js

You can do something like: infuraProvider.getBlockNumber().then(function(blockNumber) { ...READ MORE

Oct 8, 2018 in Blockchain by Omkar
• 69,210 points
436 views
0 votes
1 answer

How to send ethers to a contract?

Transfer of tokens means you will deduct ...READ MORE

Jul 25, 2018 in Blockchain by charlie_brown
• 7,720 points
436 views
0 votes
1 answer

what is the meaning of the term 'airdrops' in cryptocurrency?

Cryptocurrency vocabulary is difficult to pin down. ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
435 views
+1 vote
1 answer

truffle compile

Try running the truffle commands as root. ...READ MORE

May 9, 2019 in Blockchain by Omkar
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434 views
0 votes
1 answer

How to use Proc/lamba returned from a method in Ruby?

You need to remove the colon: list.select(&valid_transaction) The & ...READ MORE

Aug 24, 2018 in Blockchain by digger
• 26,740 points
433 views
0 votes
1 answer

Can smart contract be altered after deployment?

No, you can not make changes to ...READ MORE

Jul 17, 2018 in Blockchain by digger
• 26,740 points
433 views
0 votes
1 answer

How does a downed peer connects back to the network in a fabric network?

This might be due to the expected ...READ MORE

Aug 8, 2018 in Blockchain by Johnathon
• 9,090 points
432 views
0 votes
1 answer

Function not working from class

Try this code:  // Add new block ...READ MORE

Aug 16, 2018 in Blockchain by digger
• 26,740 points
431 views
0 votes
1 answer

Where do we execute Smart Contracts on Hyperledger Fabric?

Take a look here: http://hyperledger-fabric.readthedocs.io/en/latest/txflow.html Hyperledger Fabric has 2 ...READ MORE

Aug 1, 2018 in Blockchain by Christine
• 15,790 points
431 views
0 votes
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Can i use HTTP GET to call external service in Hyperledger Composer?

Right now, the Hyperledger Composer supports only ...READ MORE

Jul 16, 2018 in Blockchain by slayer
• 29,350 points
431 views
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Where is default chaincode is located in pc?

The path that you have mentioned in ...READ MORE

Mar 25, 2019 in Blockchain by Omkar
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430 views
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What files are supported by BigchainDB?

BigchainDB supports .json file format. It can ...READ MORE

Feb 26, 2019 in Blockchain by anonymous
430 views
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Is {from: thesponsor, value: 10000000, gas: 3000000} considered as a transaction object?

Yes, {from: thesponsor, value: 10000000, gas: 3000000} ...READ MORE

Jul 25, 2018 in Blockchain by digger
• 26,740 points
430 views
0 votes
1 answer

Hyperledger Composer: Not able to query fabric.

Add another rule to .acl file to ...READ MORE

Nov 12, 2018 in Blockchain by Omkar
• 69,210 points
429 views
0 votes
1 answer

Blockchain ToBTC API not returning Php variable

Seems like you have a syntax error ...READ MORE

Sep 20, 2018 in Blockchain by digger
• 26,740 points
428 views
0 votes
1 answer

How to track changes of an object in exonum?

You have to describe each component in ...READ MORE

Jul 23, 2018 in Blockchain by slayer
• 29,350 points
428 views
0 votes
1 answer

How to reduce a random hash to a boolean value

Take the largest or smallest bit from ...READ MORE

Oct 30, 2018 in Blockchain by Christine
• 15,790 points
427 views
0 votes
1 answer

Will blockchain be feasible in future when the ledgers will be of a larger size?

I read this post "Blockchains don’t scale. ...READ MORE

Jul 13, 2018 in Blockchain by digger
• 26,740 points
424 views