Latest questions in Blockchain

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Testing Ask a question

This category houses questions pertaining to various ...READ MORE

Aug 1, 2022 in Blockchain by anonymous
• 300 points
480 views
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1 answer

How to write the Bitcoin logo as text?

Create a string in strings.xml like the ...READ MORE

Apr 12, 2022 in Blockchain by Aditya
• 7,680 points
660 views
0 votes
1 answer

Hyperledger Fabric blockchain network from scratch

Try playing with configtx.yaml, crypto-config.yaml and docker-compose ...READ MORE

Apr 11, 2022 in Blockchain by Soham
• 9,700 points
1,203 views
0 votes
1 answer

PHP - Validate Multisig Bitcoin Wallet Address (with Leading 2 or 3)

 The answer to your question is located here:  function ...READ MORE

Apr 11, 2022 in Blockchain by Soham
• 9,700 points
1,680 views
0 votes
1 answer

blockchain api payment module

No curly braces after your if statement. ...READ MORE

Apr 11, 2022 in Blockchain by Soham
• 9,700 points
659 views
0 votes
1 answer

Error using Santiment sanpy library for cryptocurrency data analysis

This is a great start, but I ...READ MORE

Apr 11, 2022 in Blockchain by Soham
• 9,700 points
620 views
0 votes
1 answer

Transaction verification in Blockchain

Assuming You are asking about UTXO transaction ...READ MORE

Apr 11, 2022 in Blockchain by Soham
• 9,700 points
711 views
0 votes
1 answer

Naives Bayes Classifier for bag of vectorized sentences

The error is basically the [X_train] which ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
549 views
0 votes
1 answer

safeTransferFrom does not transfer etherium to the target. ERC-721

I changed my contract buy function like ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
774 views
0 votes
1 answer

Is there a pricing calculator for azure-blockchain-workbench or azure baas using hyperledger fabric?

The cost of Blockchain Workbench is an ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
458 views
0 votes
1 answer

What is blockchain and Ethereum? Where is it used?

A blockchain is an immutable, sequential chain of ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
319 views
0 votes
1 answer

Is Ganache Decentralized?

1. Can blockchain be implemented without cryptocurrency? Yes. ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
542 views
0 votes
1 answer

Unable to send Ripple (Cryptocurrency Coin - XRP) to Wallet

The "Secret Key" or privateKey is for ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
869 views
0 votes
1 answer

How would calculate the exchange rate of Bitcoin/GBP?

You simply divide 1 by the resulting ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
289 views
0 votes
1 answer

Where does Hyperledger fabric store the public key and private key of the user?

It signs the transaction with its private key ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
644 views
0 votes
1 answer

.Ethereum/BSC blockchain transaction data

The "Tokens Transferred" information comes from event ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
763 views
0 votes
1 answer

Why do we not use Istanbul Byzantine Fault Tolerance (IBFT) in Public Blockchains?

The use of the IBFT consensus involves ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
549 views
0 votes
1 answer

Generate Ethereum addresses in HD Wallet using public key only (bitcoinj/web3j)

Like Bitcoin, Ethereum uses secp256k1. Ethereum addresses ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
3,370 views
0 votes
1 answer

What's the difference between distributed hashtable technology and the bitcoin blockchain?

A Distributed Hash Table is simply a key-value ...READ MORE

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

Does timestamp also change with nonce to calculate block hash in blockchain? How hash is calculated?

I was unable to locate the exact ...READ MORE

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

In-App Purchase vs. support developer with bitcoin

Not only do I think this will ...READ MORE

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

Generate new Ethereum Wallet in NodeJS

 In its simplest form, the Ethereum wallet ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
1,658 views
0 votes
1 answer

Why is Proof of Work necessary in Blockchain?

You are missing the double-spending problem. If ...READ MORE

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

Kotlin Convert Bitcoin value into Satoshi Value

java.lang.NumberFormatException: For input string: "45,586" This means ...READ MORE

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

How can I import a Bitcoin paper wallet key into a bitcoinlib wallet?

Your code should work in the latest ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
1,146 views
0 votes
1 answer

Coinbase API v2 Getting Historic Price for Multiple Days

Any reason you aren't using coinbase pro? The ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
2,206 views
0 votes
1 answer

Bitcoin ticker + fontawesome

Font Awesome arrow up is displayed like ...READ MORE

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

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
481 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
473 views
0 votes
1 answer

How to swap an Ethereum ERC-20 and Neo NEP5 token with a smart contract?

Each blockchain is its own separated administration. ...READ MORE

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

Is it possible to set up bots for BitCoin faucet websites?

I managed to create a bot for ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
2,426 views
0 votes
1 answer

How to get the current price of a cryptocurrency on google sheets from coinmarketcap?

Your code does not appear to use ...READ MORE

Apr 12, 2022 in Blockchain by Soham
• 9,700 points
1,194 views
0 votes
1 answer

How to get sender bitcoin address from transaction ID?

 You can use any scripting language with ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
2,556 views
0 votes
1 answer

understanding cryptocoins mining profit calculation

 The problem is that the miner you ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
391 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
482 views
0 votes
1 answer

Using zCash through BitcoinJ

Your code isn't accounting for the format ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
497 views
0 votes
1 answer

IBM Cloud - Blockchain platform | Problem creating MSP definition

I have found a solution by doing ...READ MORE

Apr 11, 2022 in Blockchain by Rahul
• 9,670 points
362 views
0 votes
1 answer

Is there a way to get the market cap or market cap rank of a coin using the Binance API?

There is no "legal" way to get ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
924 views
0 votes
1 answer

How to use local binance smart chain lightclient to access the blockchain with web3.js?

So the answer is that I was ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
1,304 views
0 votes
1 answer

Ethereum Smart Contract Blocking

Since transactions from a block are executed ...READ MORE

Apr 12, 2022 in Blockchain by Rahul
• 9,670 points
318 views
0 votes
1 answer

safeTransferFrom does not transfer etherium to the target. ERC-721

I changed my contract buy function like ...READ MORE

Apr 7, 2022 in Blockchain by Rahul
• 9,670 points

edited Mar 13, 2023 by Gunashree 1,818 views
0 votes
1 answer

How to get historic Bitcoin Price Index using coinbase or any other open source API?

I would recommend you to use the ...READ MORE

Apr 7, 2022 in Blockchain by Rahul
• 9,670 points
1,126 views
0 votes
1 answer

How to visualize real-time data candlestick chart for cryptocurrencies?

Take a look at https://github.com/highfestiva/finplot. Where you can ...READ MORE

Apr 7, 2022 in Blockchain by Rahul
• 9,670 points
2,362 views
0 votes
1 answer

Where does Hyperledger Fabric store the database for the Blockchain and where do i can see it and how?

Hyperledger fabric supports LevelDB and CouchDB as ...READ MORE

Apr 7, 2022 in Blockchain by Rahul
• 9,670 points
2,050 views
0 votes
1 answer

Bitcoin blockchain rookie question: how is nonce (the secret number added to each block) generated?

It isn't a secret number but it's ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
618 views
0 votes
1 answer

What is the "eosio" account re:EOS blockchains?

Its private key is stored at config.ini # ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
294 views
0 votes
1 answer

Stratum connection for bitcoin pool mining

After hours of tinkering around I have ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
1,383 views
0 votes
1 answer

What's the difference between SHA and AES encryption?

You use SHA functions to take a ...READ MORE

Apr 7, 2022 in Blockchain by Aditya
• 7,680 points
4,883 views