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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1answer
26 views

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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1answer
30 views

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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1answer
37 views

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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2answers
55 views

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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31 views

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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1answer
19 views

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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35 views

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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39 views

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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1answer
36 views

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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23 views

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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1answer
29 views

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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1answer
32 views

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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2answers
158 views

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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2answers
30 views

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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24 views

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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29 views

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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2answers
80 views

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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1answer
127 views

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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47 views

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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15 views

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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1answer
153 views

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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1answer
17 views

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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1answer
69 views

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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1answer
58 views

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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25 views

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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1answer
48 views

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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1answer
76 views

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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2answers
91 views

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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0answers
90 views

Rate limits Bitcoin Core JSON-RPC

I am trying to brute force using Burp Suite to create wallets in Bitcoin Core with random strings(size:5) containing special characters. Context: https://github.com/bitcoin/bitcoin/issues/21510 ...
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90 views

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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0answers
25 views

Is there an API that accepts a transaction id/hash as an input, and returns all inputs and outputs for that transaction?

I'm looking for an API that accepts a tx id/hash as an input and returns all the inputs and outputs associated with that transaction hash. For example, the transaction described at https://www....
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2answers
133 views

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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0answers
32 views

Locally Sign transactions Blockcypher API

I'm having a problem that I can't solve since yesterday with the blockCypher APIs when I try to create a new transaction and submit it. https://www.blockcypher.com/dev/bitcoin/?shell#creating-...
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14 views

Free Api To Get the total Market Caps

I'm looking for a Free API to get the market caps of Bitcoin. There was a previous question about it. However the documentation those endpoint are only to paid plans? How can I get the total market ...
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1answer
201 views

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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0answers
36 views

Tracking transactions on different wallets. Coinbase

How to track each transaction to each wallet that creating for users in website? when i am trying to get data from all transactions i am getting information that includes only global coinbase account ...
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0answers
47 views

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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2answers
140 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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1answer
205 views

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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2answers
1k views

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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1answer
64 views

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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0answers
58 views

Getting Error "Not enough funds after fees in 1 inputs to pay for 1 outputs, missing -xxx" with BlockCypher API

I code a C# application, build of the BlockCypher API and NBitcoin. I try to send 5000 Satoshi (f.e.) from my wallet to another. My wallet has an amount of 12709 satoshi as balance. The Request is: {&...
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1answer
72 views

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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1answer
90 views

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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0answers
55 views

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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1answer
80 views

API for automatical buying and selling coins in Java [closed]

I need to create a simple bot for buying and selling coins and the programming language needs to be Java due to some technical specifications. These are the functions which I need from that API: buy(...
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0answers
76 views

Single API to Get Fee Estimates for All Major Cryptocurrencies? [closed]

Many sites provide estimates of miner/gas fees for individual cryptocurrencies. For example, EtherScan provides gas estimates for ETH. BTC Network provides fee estimates for Bitcoin. Both of these ...
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1answer
43 views

How do internet wallets connected to full blockchain nodes

How do internet wallets such as Coinbase connect to the a blockchain node? Doesn’t the node itself create a default wallet object on startup? How is this replaced by internet wallets which hold ...
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2answers
241 views

What exactly is the "vout" field?

This is driving me nuts. Through trial-and-error, asking numerous people and attempting to read endless articles and manuals, I've come to the conclusion that the "transactions" listed by ...
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1answer
56 views

How to search (via json API) transactions to my wallet?

I'm new to bitcoin and want to take payments with it on my website. Taking payment isn't a problem but the manually process of verifying payments and matching up with users is. Is there any way to use ...

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