Questions tagged [api]

This tag should be used for questions related to APIs offered by any Bitcoin related service. An API is an Application Programming Interface and services often have APIs available for developers to write software which accesses information offered by the service.

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How can I create/provide crypto currency wallets to my users?

I am interested to know, if I want to make a facility to my website users to be able to pay/buy with crypto currencies, also to gain ability to send/receive crypto currencies together( something like ...
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how can I get the fee percentage on buying or selling a specific amount of bitcoin at any time?

so im noob on all of this so bare with me. im trying to test the possible net revenue of a trading algorithm/bot, but i dont trust it enough to test it with real money, so im going to simulate how ...
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What are bitcoin Pool APIs?

I contacted a website and asked them where they get their data for crypto like Bitcoin, as I am trying to find the place for the most up to date and reliable data on Bitcoin and other crypto. They had ...
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Buy Bitcoin with NBitcoin c# Web App

I have been using the NBitcoin lib with c# to create a Bitcoin wallet app. I have pretty much sorted out the creation of the wallet and everything that this entails. What I need some help with is on ...
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multi currency crypto wallet with API

It's need Linux (Ubuntu) multi currency crypto wallet with API or command line interface to create address, make send and get information when crypto incomming. Is anyone can advice some reliable ...
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Why Binance has BTCUSDT but not BTCUSD?

For BTCUSDT I got feed from Binance API, but not for BTCUSD. USDT is different from USD, right? Then why USD does not exist?
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what are exchanges that use binance or other exchanges called?

There are some exchanges that don't have their own market and use other exchanges (binance, .... ) API to fill their users orders, and charge a little more fee and that's how they make profit out of ...
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Where do you get work and submit solutions?

is it possible to get bitcoins using your own custom code? Is it possible to get a hash somewhere, come up with a solution on my own, and then submit the solution somewhere? I just thought the puzzle ...
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Get transactions for address

I develop an application (BitBook, https://github.com/C-Otto/BitBook) that helps users track their coins. For this, whenever I reason about some address, I need to consider all transactions that take ...
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How is the secp256k1 API defined? In what ways is it restricted?

I'm familiar with proprietary APIs where a third party decides what data and functionality is available to developers communicating with their server. However, secp256k1 is an open source ...
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Unable to "sendcoins" using bitgo express apis - Windows OS

I am building an ASP.Net project (C# - .Net 4.8 - windows os - visual studio 2015). I want to send bitcoin from one address in my wallet to another for test. Trying to access api url : https://test....
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Is bitgo.com api ok for bitcoin payment? What are limitations?

I want to use https://www.bitgo.com api for my bitcoin payment. My Questions : Is this api working at this time? Is this api free? What are limitations about using this api? EDIT : I have 1000 ...
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What is the flow of buying crypto on behalf of users?

I am building a crypto on-ramp for users in emerging markets that allows users to buy crypto via debit/credit cards, mobile money, etc. What is the flow of buying crypto on behalf of users? From ...
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Given a tx hash, is it possible to know if it's someone selling or buying bitcoin?

I'm working on a project that involves identifying sales and purchases in the Blockchain. Is there any way to do this with the blockchain.com API?
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Can't query own node

I'm trying different ways to query my own bitcoind node on testnet but I'm failing every time. Tried using bitcore's API and nodejs: async function tryBitcoin() { const data = await axios.get('...
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Are filters available for Blockchain.com APIs?

I'm trying to get the block details of Bitcoin using block height. The API provided on the "blockchain.com" website also dumps the huge transaction list along with the response. Is there a ...
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coinbase network fee api

i am creating application with online crypto wallet. for this purpose, I used coinbase service. the principle is that the user receives his address to replenish the wallet and can also send currency. ...
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blockchain.com api | How generate "Legacy" & "Nested SegWit" & "Native SegWit" addresses for receive separately?

Please check out this link : https://www.blockchain.com/api/api_receive As you see we can generate receiving addresses for our customers using this api. My question is what is the type of that ...
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Default derivation path in Trezor Suite desktop app

This seems like a silly question but I could not find an answer after searching extensively. I currently have a Trezor Model One device that I'm accessing through both the Trezor Suite desktop app on ...
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Binance get quantity got from trade

I'm working with the Binance API. I can't find a way to calculate how much amount of a certain asset I get from a trade after commissions. E.g. if I spend 100 USDT to buy BTC worth say $200 each since ...
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How to get list of Bitcoin Block Hashes by Block Number?

Suppose I want to obtain the block hashes for all Bitcoin blocks numbered 1 through 50,000. What would be the best way to obtain this information? I could write a web scraper to pull it off web-based ...
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Can a full node measure bandwidth to and from its peers?

For example, can I run a full node, connect to some 8 peers, and measure my uplink and downlink bandwidth to each of my peers?
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Bitcoin-cli responding but not curl

According to the bitcoin documentation I can make curl calls to my bitcoin node. However, whenever I run a curl command like the following (as per the docs): curl --data-binary '{"jsonrpc": &...
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2 answers
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Why in old blocks I can't see the miner address using RPC API calls?

So, I'm using Bitcoin Core RPC client version v22.0.0 and Bitcoin Core version v22.0.0. To get the block with height 1, I call the API like this: bitcoin-cli -datadir=/Users/dennis/Bitcoin getblock \ ...
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Is there a source (e.g. API) that contains the historical bitcoin hashrate amongst the largest mining pools?

The closest of what I have now is this, which can theoretically be used to calculate from the total hashrate from here with e.g. graphical analyzing algorithmns. I wonder whether there is some API ...
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Blockchain Info BTC Hash-Rate API

I'd like to get the history of hash rate, Miners Revenue, Difficulty, Block Size of BTC (& other coins) since 2013 and preferably in different granularity (i.e., 1d, 1hr,...) with Python. I know ...
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Error 400 when pushing tx hex to mempool.space's API

I am using the code syntax provided by mempool.space for a POST transaction request from their website here: https://mempool.space/api const mempoolJS = require("@mempool/mempool.js") const ...
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How to set up a listener on an address, and trigger events upon receiving transaction?

I have a task where I need to set up some sort of a listener on a particular bitcoin addresses for incoming transactions, and once a transaction arrives, I need to call some function in my web service....
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API For CryptoCurrency Exchanger - Free Plan - Highest Requests Per Day

I have a little web site for my clients. That web site is working with 3 digital currencies : Bitcoin Ethereum DogeCoin I want to create a unique wallet for every client > Unique Bitcoin ...
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Buy USD using Binance API

I'm actually if anyone knows how to use Binance API to deposit USD with debit card transactions/ACH payment. Unable to find this on their documentation.
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How can I retrieve all transactions for an address using the blockchain API?

Tell me how to interact with https://www.blockchain.com/. 1). I need to withdraw all transactions from the address, my code outputs transactions only for the last day? 2). How do I add additional ...
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What are some different ways to retrieve btc transaction information of an address using bitcoinjs?

What are some different ways to retrieve btc transaction information of an address using bitcoinjs? I've tried using the syntax from this page (https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/...
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How can I get RawTX transactions?

I used to be able to get RawTX transactions on the Blockchain using the link: https://blockchain.info/tx/60183ab915f2f4b0190605f98bd0e9f8eafe13a1c902b3ae87ecd0dfc8a599a0?format=hex But the site ...
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How do I use Bitcoin Core (fully synced) to "backtrack" a receive address?

I'm trying to "reverse-track" my current Bitcoin wallet to see its exact history on the blockchain, backwards. I have a fully synced Bitcoin Core installed. What command do I use in its ...
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How can i list all transcation of bitcoin using API.. I need all transcations and current transactions of coin( e.g bitcoin) [duplicate]

How can i list all transaction of bitcoin using API.. I need all transactions and current transactions of coin( e.g bitcoin) I need APIs that can give me all transaction related data of particular ...
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Fuzzing descriptor wallet RPCs

Is SQL injection a possibility while using JSON-RPC and Descriptor wallet RPCs? Consider one parameter in some descriptor wallet RPC is vulnerable and returns some data with SQL queries that shouldn't ...
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Python code error : Hash greater than Target

While trying to run a reference code from GitHUb i am getting an error "Cannot Mine-Hash is greater than Target". As i am just a beginner with coding i am not able to figure this out. Kindly ...
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How do APIs know Bitcoin transaction and wallet types?

I am working on a university project, and I noticed that paid crypto APIs like Whale Alert or Whale Trace return information about transaction types (like exchange), sender and receiver wallets (like ...
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1 vote
1 answer
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How to find the secp256k1 api?

I want to use the secp256k1 library https://github.com/bitcoin-core/secp256k1 (or, more specifically I want to use the python wrapper https://github.com/electrumsv/electrumsv-secp256k1). I have a ...
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What is the rate limit of the Esplora instance blockstream.info

Blockstream.info provides a free API, for example: https://blockstream.info/testnet/api/tx/d4b1add055db58343500157a6525a73ceb9c8850f0fb435f1f60071e8cad6540 I would like to know what the rate limit for ...
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How could I make my own API to query the blockchain

I'm looking to access transaction history for some specific coins directly from the blockchain. The main reason is that most of current API are not free or don't provide information for the coins I ...
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How can I pull the "Candles" argument from the Huobi websocket data?

I've a problem with Huobi Websocket, I know my ways in REST API but new to asyncio and websockets, and Huobi only gives resonable amount of history through websocket request so I'm stuck with it. I'm ...
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Cryptocurrency Wallet 3rd party access

Do Crypto wallets such as Exodus etc have something like an API? For example is it possible to perform a cryptocurrency transaction directly from the web browser client (using the specified amount and ...
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1 vote
2 answers
203 views

REST API to fetch block by height

I am trying to incorporate bitcoin in one of the applications and want to integrate the REST API which exposes all the public information. I tried using https://chain.api.btc.com/v3/block/3 but upon ...
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How to get info for public address from bitcoin-cli + local db? (Can it be done without creating a wallet?)

I just started running my own full node. IBD is finished, and I'm now learning how to use bitcoin-cli. First I would like to extract all the available information for one or more public addresses ...
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Binance API Error Code: "code": -1022, "msg": "Signature for this request is not valid."

I have a problem with the Binance API. I use HTTP request from Integromat, but I always get the following error message: "code": -1022, "msg": "Signature for this request is ...
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How do you determine whether Bitcoin Core is synced fully or not from the RPC API?

I keep getting the wrong numbers returned daily in the beginning of the day because Bitcoin Core has not yet synced the blockchain from the computer being powered off during the night. So I need a way ...
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What is the official explorer and value API for Bitcoin?

I am new to cryptocurrency development, and I have noticed that Bitcoin has an official wallet for both Desktop and Mobile (correct me if I am wrong). My question is, does Bitcoin have an official ...
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Quantifying the long term costs associated with self hosting the Bitcoin node?

In this question I discussed the option of self hosting the Bitcoin node vs. using 3rd party services with API access. I quoted a colleague who said that "for every coin we wish to support, we ...
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How do I fix socket.timeout error when getting data from blockchain.info? [closed]

I'm writing a python script using the blockchain API that takes as input a list of seed addresses, gets their transactions and the input/output addresses of each transaction. Then I get the ...
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