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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26 views

What is the list of blocking RPC calls in bitcoin?

I would like to get a list of blocking rpc calls in Bitcoin Core. For example importmulti is a RPC blocking call and I would like to know the full list
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2answers
19 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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18 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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20 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
61 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
48 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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37 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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13 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
87 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
13 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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33 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
48 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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24 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
35 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
51 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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1answer
66 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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67 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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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
79 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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26 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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12 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
136 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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31 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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40 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
100 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
140 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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992 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
50 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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49 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
66 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
74 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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47 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
60 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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68 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
41 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
167 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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19 views

What is the purpose of the "category" Bitcoin Core RPC API field/property?

When using the Bitcoin Core RPC API to list the transactions, there is a "category" property, which can apparently be either "send" or "receive". Then there's the "...
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1answer
48 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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1answer
216 views

How can I determine the address from a private key?

From the steps in the wiki, take this example private key: 0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D When I import this into Electrum, I find these values: Address: ...
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1answer
385 views

How start make a application with php

I'm new with bitcoin, and I would like create a application that have wallets and transactions, but I dont know how start, I was reading the api blockchain.info and is interested use the module that ...
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1answer
110 views

How to get a balance from the network directly?

I was under the impression that I'd be able to get a balance from the network directly, not only by going through some http interface which wraps the server RPCs. I am curious, is it possible to get a ...
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1answer
34 views

Specification of REST .bin format?

I'm currently using the JSON Rest API to get lots of transaction data from bitcoin. Unfortunately thats quite slow. I know there is also a binary format (see Unauthenticated REST Interface), but I ...
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1answer
79 views

What is the alternative for an exchange which doesnt want to run a node of a coin traded?

It seems to be best practice for an exchange to run a node itself for a coin traded there. But, is there an alternative? A third party service? If yes, which are recommended and why?
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2answers
68 views

What am I missing about this "guaranteed" money-making scheme that I didn't hear from anyone but just popped up in my head?

Let's suppose that I have already set up an account at Exchange A and Exchange B, loaded each up with a small buffer of BTC (much less than 1 BTC), and am able to make API requests to buy/sell from ...
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1answer
51 views

Are there any Bitcoin payment providers with an API’s for allowing unconfirmed transactions? [closed]

I want to design my web app to instantly accept crypto currency like Bitcoin as a payment for a subscription to the app. I will design it to cancel the subscription and ban the user’s account if the ...
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1answer
53 views

Is the `addmultisignature` API call dependent on order of public keys in the array? Or is it lexicographically sorted?

Say Alice and Bob are part of a partnership business that accepts Bitcoin. They store all their main funds in cold storage until the end of 3 months, when they cash out and use a new address. This ...
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2answers
102 views

How can I build my own get address transactions API?

I want to build an API to query an arbitrary bitcoin address for received transactions. The address is not necessarily associated with my wallet. Is this possible using the commands in bitcoin-cli? I ...
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2answers
161 views

In Electrum, how does one watch/poll a wallet for an incoming payments to a certain address via API?

I want to create a simple way to accepting bitcoins on my own, using Electrum. I don't except big volume. I suppose, I'd have at most a handful of incoming payments in the beginning. That is, I ...
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1answer
1k views

What is the request limit number in the blockchain.info API? [closed]

I'm planning to use https://www.blockchain.com/api, precisely single block https://www.blockchain.com/api/blockchain_api for testing purposes on my script. I noticed there this line on the the API ...
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2answers
80 views

library for validating bitcoin private and public keys

I am building a python script that gets a string and determines if it is a valid bitcoin private key or public key, and if so it returns its type/format (base58, BIP32, HexaDecimal etc.) and its ...

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