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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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Setting up local bitcoin api

I would like to setup an API on my local machine, api like that of blockchain.info, so that I can query the API locally (using curl) rather than relying on third parties. I come across Insight API ...
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17 views

Error: “1 private keys do not correspond to any input. Please check private keys provided.”

I get this error message "1 private keys do not correspond to any input. Please check private keys provided." using blockcypher PHP API Although I am using the right private key for the right input ...
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1answer
23 views

What is the right method to calculate Relative Strength Index (RSI) for incoming real time data?

I am working on a trading bot that computes values for several indicators including the RSI. I subscribe to real time minute-level market data from an exchanges, and as new data arrives, I get the ...
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1answer
18 views

CoinMarketCap API(v2)

I am new in php and want to display the cryptocurrency table from coinmarketcap to my website using php, can anyone help me out how to add/use coinmarketcap api? Thanks.
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0answers
9 views

Is there a website / api where I can access historic coinbase data?

Is there a website / api where I can access historic coinbase data for Bitcoin? I know about blockchair.com but they charge for the coinbase data. Anywhere that supplies this for free?
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1answer
24 views

How to create wallet in Electrum programmatically?

I want to create new wallet using Electrum-apis. I have gone through the documentation given here but didn't found any method to create a new wallet or an address. Can someone please clarify how I ...
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0answers
34 views

Different balances in API block explorers for BTC

BTC.com block explorer shows bigger balance than for example Insight or Blockchair. For example: https://btc.com/1FLDCfr9iG7n6bAdGsqBXmhaLgC4aSze72 https://insight.bitpay.com/address/...
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1answer
16 views

Calculate fees with Blocktrail/btc.com SDK

First of all hi and thanks for your support and your time. I want to calculate the fees of a blocktrail transaction with blocktrail SDK, before making the transaction, in order to let the recipient ...
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1answer
22 views

Is it required to have an electrum account for electrum api usage?

Is it necessary to have an account on electrum in order to build a custom BTC wallet interface using electrum-apis where user can create multiple wallets, address, send/receive transactions? Or, ...
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2answers
37 views

Does Electrum use Bitcore Apis as it's backend?

Does Electrum use Bitcore Apis as it's backend or not? If not, then what is the purpose of developing Electrum when Bitcore Apis provides all the features Electrum has (like HD wallets and master ...
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0answers
9 views

api blockchain.info receive confirmations count info about transaction

I am making some simple pament gateway using bitcoinchain.info public api. I am generating a new address and after that checking one time per minute the status of this address with https://www....
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29 views

Does Bitcore API supports Litecoin and Bitcoin cash?

Does Bitcore API supports Litecoin and Bitcoin cash? If so, kindly suggest me where to find the documentation for the same
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10 views

Wallet creation using Bitcore API

Is Bitcore's HDPrivateKey same as creating new wallets? Please refer the API document for details.
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1answer
50 views

I'm Searching cryptocurrency exchange api [closed]

We want complete cryptocurrency trading service from api requirement all api where we can integrate all services in my UI. long story in short we want any service provider backend in our UI. API ...
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1answer
38 views

How Master seed is generated using Bitcore API?

Can someone please explain how to get Master Seed when a new HD keys is created using Bitcore APIs? My purpose is to implement wallet service in my application using Bitcore APIs. Refer this link ...
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1answer
20 views

Prioritizing BTC transactions using Bitcore APIs

I’m planning to give a feature in my application where a user can select type of priority (Fast, Average or Slow) for their transactions. How can I get fee required for each type? Does Bitcore API ...
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0answers
50 views

List All the transactions of an adress - API

I am looking for a way to list all the transactions of an address. For instance, if we use the Blokchain.info API we get: url='https://blockchain.info/rawaddr/1PFtrRjbq4aLfM7k4tyLZ3ZAuTsgLr6Q8Q' ...
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2answers
54 views

Bitcoin Transaction using API with Custom Fees

I want to transfer Bitcoin from one individual address to another using API. But I want to set Transaction fees as per my requirement. So How can I do it ? Right now I am using blockchain-transaction ...
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4answers
44 views

How do I connect my online store to the blockchain?

I have an online store for which I want to be able to accept bitcoin. I believe that what I need is an API that will connect my store to the blockchain. If not, the question below would relate to ...
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1answer
53 views

Shorts, longs BTC data

I am trying to use the Bitfinex API to get historic shorts,longs BTC/USD data.So, the Bitfinex gives size data with Available values: '1m', this equals last 2 hours, i need last two month at least. ...
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2answers
53 views

Simple Address check via API

So I have a wallet with thousands of addresses, I want to know how can I check the blockchain whether or not a transaction has been made to one(or another) of the addresses?
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1answer
46 views

how can i get data from GDAX Bitfinex using API and show like bottom

how can i get and show below link data, can someone please help me https://runcoders.com/live-bitcoin/ i am trying by this but failed to show like up link <?php //define API endpoint $url = "...
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0answers
18 views

Which Wallet to use for Exchange having REST api

One of my friends is building a crypto exchange using REST api and I was wondering which open source wallet (hd wallet with multisig) will provide me blockchain api services in REST api (insight, ...
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0answers
51 views

Do we have complete REST api for Copay wallet services?

I'm looking for complete REST api library for copay wallet services that includes all insight operations, wallet operations (create wallet, derive new address deterministically, send BTC to multiple ...
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2answers
87 views

Bitcoin API(s) - how to pair (or obtain) BOTH sender and receiver addresses with a transaction ID (hash)

Various block explorers exist, which offer REST APIs. So far been using blockchain.info and btc.com Here is what we have: - List of bitcoin addresses Here is what can easily be got with that info: -...
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1answer
75 views

Fetch Balance of wallet without Core wallets of all coin?

I'm creating an exchange like service, I need some for showing all transaction to user like deposit and withdrawal but I'm not using core wallets of any coin, using paper wallets for wallet creation ...
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1answer
15 views

Time/memory complexity of Bitcoin API calls

Is there a way to see the time/memory complexity of Bitcoin's API? For example, bitcoin-cli getblock "some-header-hash" fetches the block with a matching hash. How is this implemented under the hood?...
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1answer
111 views

How to determine EUR (or USD) price from Poloniex Ticker?

Poloniex has for me a strange ticker content. Rest API URL: https://poloniex.com/public?command=returnTicker I have no problem with other plateforms to determine an immediate price, for example EUR /...
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1answer
27 views

API for multiple blockchains

Is there an API to get data for multiple blockchains? Most blockchain explorers already offer an API but I'd like to be able to get information for different blockchains through the same API.
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1answer
50 views

How is a ticker price determined?

I am trying to understand how a ticker price is determined for an asset, in this case I am specifically looking at BTC data from GDAX. The question stemmed when downloading historical BTC data from ...
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2answers
33 views

Can one tell which way the market goes from sell and buy orders?

Among other open access (i.e. public) data available in exchange API's are the open order books. They are given on exchange websites sorted by coin value. Is there a way to tell which way the market ...
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0answers
234 views

How login in Bitcoin wallet using private key

We're working with a ICO project based on NEO Blockchain. We've requirement of getting payments through NEO, ETH and BTC. We're using deposit address concept to get payments from the users, and for ...
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2answers
47 views

Blockchain Payment receive api

While using blockchain receive payment api, what if some one send less then require fund or some one send extra fund on same one time generated address. does fund will automatically refund to sender ...
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1answer
107 views

Bitcoin cash - Transaction history as JSON

Is there a way/a service to retrieve all bitcoin cash transaction for a bitcoin cash address in JSON format? Like the API of blockchain.info offers for bitcoin core?
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0answers
42 views

Blockchain API callback is OK but bitcoin is not in wallet

i Have a problem with the blockchain api, i posted in another question here with the same problem but (why?) is deleted. I sent three transactions and this is returned by api and saved in my database,...
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1answer
381 views

How to send Bitcoin in the Testnet?

I'm using this library: https://github.com/lian/bitcoin-ruby And here's my code: require 'open-uri' require 'net/http' require 'net/https' require 'json' require 'bitcoin' Bitcoin.network = :...
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0answers
20 views

Receive payment without 3rd party API

So is there anyway to generate address and then check the address to see if enough fund is sent and enough confirmation without using any 3rd party API? Works on software written in C# or/and Web PHP....
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0answers
22 views

A website that provides API for multi currencies

Can you please help me to find a wallet that provides API for multiple currencies such as: BTC, ETH, XMR, BCH, LTC, DASH. I want to create new address for each of the currencies and check if there is ...
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1answer
117 views

SPV Wallets vs API Wallets - Pragmatic

From what I know, the only advantage of an SPV node compared to a API Node, is the increase in privacy. SPV nodes take up more bandwidth, in order to stay synced with the current chain and in some ...
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1answer
53 views

How to buy with Poloniex API? [closed]

Hi I have a question about buy method. Recently I received successful message from Poloniex I run once buy order method with option immediateOrCancel. I get two trades instead of the expected one. {'...
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1answer
68 views

How Do HD Wallets Keep Track of all accounts?

If a HD Wallet generates 1,000 accounts for example. How would they keep track of all of the account's balances, if someone for example, paid into the 455th account, they would want to update the ...
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0answers
31 views

Using bitcoin-core RFCs to create REST APIs

I am new to using Bitcoin and the Lightning Network. I was looking at this: https://bitcoin.org/en/developer-reference#bitcoin-core-apis I saw REST APIs as well but did not seen any functions for ...
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1answer
40 views

Using a programming API with blockchain

New to using BTC and the Blockchain. My understanding is that (for the Bitcoin), one can download/install btcd. Then, one has to use btcd to synchronize the "local" Blockchain with the "main" ...
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0answers
30 views

Blockchain.info how to request BIP44 receive address with arbitrary index

I have been generating BIP44 addresses with blockchain.info's V2 API. Unfortunately, my database got corrupted and many addresses got lost. I landed with a gap far exceeding 20 and a high address ...
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0answers
71 views

Using bitcored shows 0 balance

I am using bitcoin-node-api module of nodejs for that I am running bitcored and start my server which runs fine. I have transferred money to address which generated by using http://localhost:1111/...
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1answer
77 views

Receiving payments from users for over 150 coins

I would like to receive cryptocurrency payments for bitcoin, ethereum, ripple, stellar and over 150 different altcoins via my website. Similar to a cryptocurrency exchange such as Binance, I would ...
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0answers
17 views

API: Trade Volumes for shorter timeframe than 24h

I need trade volumes for all tradeable symbols for an exchange. E.g.: binance: [{ "LTC/BTC": { "15m": { ... }, }, { "1h": { ... } } }], hitbtc: [...] ... Tickers only have 24h volumes. It's not ...
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1answer
182 views

what is blockchain.info testnet api url?

there is a testnet for blockchain.info here but I can't find a url for calling api(s) in testnet as such we have in main network on main network https://api.blockchain.info/v2/receive?xpub=$xpub&...
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0answers
23 views

Trades in bitstamp

How does one obtain the trade executions in bitstamp ? Is it via the live trades stream comparing order_ids in the stream with our own order_id, or poll one of the http apis periodically. If so, which ...
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56 views

How can I know exact available balance for an address to spend?

Assume scenario as below. My address has 20BTC. I send 5 BTC to someone, My Final balance still shows 20 BTC, with -5 unconfirmed balance. so I assume my available balance to spend is 20 - 5 = 15 BTC....