Trending questions in Blockchain

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How to write the Bitcoin logo as text?

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

Apr 12 in Blockchain by Aditya
 • 7,280 points • 41 views
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Generate Ethereum addresses in HD Wallet using public key only (bitcoinj/web3j)

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 94 views
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PHP - Validate Multisig Bitcoin Wallet Address (with Leading 2 or 3)

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

Apr 11 in Blockchain by Soham
 • 8,730 points • 73 views
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1 answer

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

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 77 views
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1 answer

Generate new Ethereum Wallet in NodeJS

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 71 views
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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 in Blockchain by Rahul
 • 8,980 points • 63 views
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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 in Blockchain by Soham
 • 8,730 points • 58 views
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1 answer

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

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 53 views
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1 answer

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

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 50 views
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1 answer

Bitcoin ticker + fontawesome

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 43 views
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Hyperledger Fabric blockchain network from scratch

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

Apr 11 in Blockchain by Soham
 • 8,730 points • 36 views
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1 answer

How to get sender bitcoin address from transaction ID?

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

Apr 12 in Blockchain by Rahul
 • 8,980 points • 40 views
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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 in Blockchain by Rahul
 • 8,980 points • 39 views
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1 answer

Why is Proof of Work necessary in Blockchain?

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 38 views
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Error using Santiment sanpy library for cryptocurrency data analysis

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

Apr 11 in Blockchain by Soham
 • 8,730 points • 33 views
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Naives Bayes Classifier for bag of vectorized sentences

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 32 views
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1 answer

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

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 35 views
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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 in Blockchain by Rahul
 • 8,980 points • 30 views
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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 in Blockchain by Rahul
 • 8,980 points • 29 views
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1 answer

Is Ganache Decentralized?

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 29 views
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1 answer

How would calculate the exchange rate of Bitcoin/GBP?

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 28 views
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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 in Blockchain by Soham
 • 8,730 points • 32 views
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1 answer

Coinbase API v2 Getting Historic Price for Multiple Days

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 31 views
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1 answer

.Ethereum/BSC blockchain transaction data

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 27 views
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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 in Blockchain by Rahul
 • 8,980 points • 27 views
0 votes
1 answer

Using zCash through BitcoinJ

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

Apr 12 in Blockchain by Rahul
 • 8,980 points • 29 views
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1 answer

What is blockchain and Ethereum? Where is it used?

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 24 views
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1 answer

understanding cryptocoins mining profit calculation

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

Apr 12 in Blockchain by Rahul
 • 8,980 points • 28 views
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1 answer

blockchain api payment module

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

Apr 11 in Blockchain by Soham
 • 8,730 points • 23 views
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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 in Blockchain by Soham
 • 8,730 points • 27 views
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1 answer

CryptoCurrency NODE.js Web3 Ethereum - Can't connect to TESTRPC

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 27 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 in Blockchain by Soham
 • 8,730 points • 26 views
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1 answer

Transaction verification in Blockchain

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

Apr 11 in Blockchain by Soham
 • 8,730 points • 21 views
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Kotlin Convert Bitcoin value into Satoshi Value

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 25 views
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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 in Blockchain by Soham
 • 8,730 points • 24 views
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1 answer

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

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

Apr 12 in Blockchain by Rahul
 • 8,980 points • 23 views
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Ethereum Smart Contract Blocking

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

Apr 12 in Blockchain by Rahul
 • 8,980 points • 23 views
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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 in Blockchain by Soham
 • 8,730 points • 20 views
0 votes
1 answer

REQUEST_TIMEOUT when instantiating my mart contarct on IBM blockchain Hyperledger Fabric network IBM. VS CODE is used for Hyperledger Fabric network

 If you're seeing a REQUEST_TIMEOUT error it's ...READ MORE

Apr 12 in Blockchain by Soham
 • 8,730 points • 19 views
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1 answer

In-App Purchase vs. support developer with bitcoin

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

Apr 12 in Blockchain by Soham
 • 8,730 points • 18 views
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1 answer

IBM Cloud - Blockchain platform | Problem creating MSP definition

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

Apr 11 in Blockchain by Rahul
 • 8,980 points • 27 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 in Blockchain by Rahul
 • 8,980 points • 109 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 in Blockchain by Rahul
 • 8,980 points • 54 views
0 votes
1 answer

How to get Bitcoin Private Key from an ExtPrivKey using NBitcoin

From what I see in the code ...READ MORE

Apr 7 in Blockchain by Aditya
 • 7,280 points • 44 views
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1 answer

Where actual blockchain state data stored : in memory , in file or in database?

Bitcoin nodes keep the raw block data ...READ MORE

Apr 7 in Blockchain by Aditya
 • 7,280 points • 41 views
0 votes
1 answer

How to request the data of only one cryptocurrency using CoinMarketCap api?

If you want to get the price ...READ MORE

Apr 7 in Blockchain by Aditya
 • 7,280 points • 39 views
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2 answers

Difference between various blockchain protocols

There are several differences between those blockchain ...READ MORE

Apr 6 in Blockchain by Aditya
 • 7,280 points • 40 views
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1 answer

Crypto algorithm list

The learning here is that cyphers and ...READ MORE

Apr 7 in Blockchain by Aditya
 • 7,280 points • 35 views
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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 in Blockchain by Aditya
 • 7,280 points • 33 views
0 votes
1 answer

bitcoin to currency converter and it's reverse in php

Ok, you can get the value by ...READ MORE

Apr 7 in Blockchain by Aditya
 • 7,280 points • 33 views
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