Trending questions in Blockchain

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Aug 1 in Blockchain by anonymous
• 300 points
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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 in Blockchain by Soham
• 9,150 points
1,258 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 7 in Blockchain by Rahul
• 9,240 points
890 views
0 votes
1 answer

Generate new Ethereum Wallet in NodeJS

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

Apr 12 in Blockchain by Soham
• 9,150 points
616 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 in Blockchain by Soham
• 9,150 points
590 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 in Blockchain by Rahul
• 9,240 points
527 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 in Blockchain by Rahul
• 9,240 points
423 views
0 votes
1 answer

How to get price from bitcoin to USD with api

If I'm not wrong, is this what ...READ MORE

Apr 7 in Blockchain by Aditya
• 7,660 points
527 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 in Blockchain by Soham
• 9,150 points
391 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?

This is how I did so: https://www.binance.com/exchange-api/v2/public/asset-service/product/get-products Get this ...READ MORE

Apr 6 in Blockchain by Aditya
• 7,660 points
522 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 in Blockchain by Soham
• 9,150 points
350 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 in Blockchain by Rahul
• 9,240 points
449 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 in Blockchain by Soham
• 9,150 points
289 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 in Blockchain by Soham
• 9,150 points
241 views
0 votes
1 answer

How to write the Bitcoin logo as text?

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

Apr 12 in Blockchain by Aditya
• 7,660 points
106 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 in Blockchain by Rahul
• 9,240 points
224 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
• 7,660 points
354 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 in Blockchain by Rahul
• 9,240 points
223 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
• 7,660 points
348 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 in Blockchain by Soham
• 9,150 points
211 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 in Blockchain by Rahul
• 9,240 points
204 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 in Blockchain by Rahul
• 9,240 points
283 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
• 9,240 points
270 views
0 votes
1 answer

.Ethereum/BSC blockchain transaction data

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

Apr 11 in Blockchain by Rahul
• 9,240 points
131 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 in Blockchain by Soham
• 9,150 points
121 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
• 7,660 points
245 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 in Blockchain by Rahul
• 9,240 points
102 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 in Blockchain by Soham
• 9,150 points
93 views
0 votes
1 answer

Is Ganache Decentralized?

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

Apr 11 in Blockchain by Rahul
• 9,240 points
92 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 in Blockchain by Soham
• 9,150 points
93 views
0 votes
1 answer

Stratum connection for bitcoin pool mining

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

Apr 7 in Blockchain by Aditya
• 7,660 points
220 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 in Blockchain by Soham
• 9,150 points
87 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 in Blockchain by Soham
• 9,150 points
86 views
0 votes
1 answer

Transaction verification in Blockchain

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

Apr 11 in Blockchain by Soham
• 9,150 points
73 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 in Blockchain by Rahul
• 9,240 points
71 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
• 9,240 points
75 views
0 votes
1 answer

blockchain api payment module

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

Apr 11 in Blockchain by Soham
• 9,150 points
68 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 in Blockchain by Soham
• 9,150 points
71 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 in Blockchain by Rahul
• 9,240 points
65 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 in Blockchain by Soham
• 9,150 points
68 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 in Blockchain by Rahul
• 9,240 points
64 views
0 votes
1 answer

Bitcoin ticker + fontawesome

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

Apr 12 in Blockchain by Soham
• 9,150 points
64 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 in Blockchain by Soham
• 9,150 points
60 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
• 9,150 points
60 views
0 votes
1 answer

understanding cryptocoins mining profit calculation

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

Apr 12 in Blockchain by Rahul
• 9,240 points
57 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 in Blockchain by Rahul
• 9,240 points
51 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 in Blockchain by Rahul
• 9,240 points
55 views
0 votes
1 answer
0 votes
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
• 9,150 points
49 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 in Blockchain by Rahul
• 9,240 points
45 views