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
481 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
414 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
45 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
463 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
285 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
82 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
418 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
13k 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
326 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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3answers
1k 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
1k 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
34 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
641 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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2answers
252 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
151 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
37 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
2k 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
152 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
2k 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
56 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
33 views

A website that provides API for multi currencies [closed]

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 ...
0
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1answer
452 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
259 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
2k 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
363 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
88 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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1answer
3k 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
38 views

Best Public cyrptocurrency APIs to develop exchange [closed]

We are developing cyrptocurrency API where we are relying on Blockcypher for several currencies. But we would like to add more and more currencies to our exchange. But it seems all crypto currencies ...
0
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1answer
288 views

Bittrex API market history -- interpreting OrderType

The Bittrex API has a request to get the market history: https://bittrex.com/api/v1.1/public/getmarkethistory?market=BTC-DOGE which gives a response containing the following fields: "Id" "TimeStamp"...
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1answer
556 views

How to send BCH programmatically using existing wallet

I'm a completely newbie to crypto so sorry in advance for stupid question. How can I send BCH to desired address using existing wallet? I found few services with quite nice rest API or even ready ...
2
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2answers
791 views

What options do I have to avoid API gap limit? I am using xpub keys

I am building a app, and the design is, the "welcome page" has a qr code allowing the user to purchase a single-use of the app. Blockchain.info conveniently allows you to use xpub to generate ...
3
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1answer
929 views

Does Bitcoin RPC API have a realtime websocket?

I am trying to create some app based on RPC API call from bitcoin core. I want to make my btc core daemon send a notification whenever a new transaction is observed. Does BTC core RPC API have a ...
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2answers
15k views

binance advanced indicator api

I know how to extract basic info like bid/ask/open/close prices on binance, but on advanced trading charts on binance I see more price indicators like EMA and I dont want to compute them from price ...
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0answers
1k views

Is there a Bitcoin equivalent to Infura? [closed]

I was wondering if there's some service for Bitcoin that is equivalent to https://infura.io/ All I could find similar so far is blockcypher, but it appears to require fees while infura doesn't seem ...
0
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1answer
571 views

Bitcoin Insight API - How to create new address?

I need to create new public address with private key. but there is no way to create new address using insight rest api. If you guys are aware about insight api then please share with me code snippet ...
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1answer
274 views

QUESTION ABOUT SLOW API

do you know about api requests cryptocurrency exchanges? Simple ticker request may be viewed like this: https://api.kucoin.com/v1/open/tick or like this: https://www.okex.com/api/v1/ticker.do?symbol=...
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1answer
229 views

Cryptocompare API is not updated

I have created an android app for maintaining the portfolio. I have used the coinmarketcap.com API. This API does not have the data at exchange level. I have tried https://min-api.cryptocompare.com/ ...
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0answers
239 views

Programmatically Get Change Address From Blockchain

BIP004 states that a derivation path's 4th digit will be 1 if it is a change address like this: m / purpose' / coin_type' / account' / change / address_index https://github.com/bitcoin/bips/blob/...
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1answer
136 views

What Protocol is used in miner and Pool communication?

I've been reading something about this, and I read about stratum, GBT, getwork. I wanna ask if what protocol are they using (HTTP?, TCP?). I am +1 to beginner so what I am asking now might be wrong ...
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1answer
539 views

Kucoin API buy and sell

Why, when I using Kucoin API, get_tick, for market info, I see, that sell is bigger buy? Example from oficcial API Documentation: With a symbol param { "coinType": "KCS", "trading": true, ...
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0answers
2k views

call JSON RPC API Using C#?

I am trying to call JSON RPS API Using C#. I have added my own IP address with its credentials. Before writing API in C#, I have installed Bitcoin on my server. Now, using the server details, i ...
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3answers
392 views

How to calculate trading fees ahead of time?

I'd like to determine what trading fees to expect before placing an order. According to https://www.bitstamp.net/fee_schedule/ Bitstamp's trading fees depend upon the USD total of a customer’s last ...
0
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2answers
265 views

Why is there a difference between the candlestick data on coinigy versus the data that binance provides?

The candlestick data on coinigy.com does not match the binance official API. See the screenshot below: Especially the open and close are very different, does anyone know why this is the case and if ...
2
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1answer
1k views

Passphrase header - Coinbase API

When trying to access the Coinbase API I am getting a header required: passphrase error. How do I create a passphrase? On the GDAX website, it states you create your passphrase when you create an ...
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1answer
592 views

Can I connect to Litecoin, Dash, BitcoinCash, Doge, etc. RPC with Bitcoin RPC client?

I want to set up a few nodes for different Bitcoin-derived cryptocurrencies and regularly query them for data via the JSON-RPC API. The thing is: I can't find much information on any other RPC API ...
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2answers
783 views

Based on the coinmarket cap api, how do they calculate the bitcoin percent change

I am trying to figure out how coinmarketcap calculates the bitcoin percent change for other coins. For example on ethereum: I'm trying to figure out how they calculate that bottom BTC percent change ...
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1answer
68 views

Can't find an API which gives me a full list of cryptocurrencies ordered by market cap

I need to know the top-10 crytocurrencies ordered by market cap so I am looking for an api that returns a list of coins ordered that way. Does anyone know?
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2answers
82 views

Block number + bitcoin address -> Find transactions with bitcoind?

If I have a block number and a bitcoin address -> Can I list all transactions for this address with an bitcoind command? Or mutliple commands?
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2answers
1k views

Bittrex API 3 minute delay

I'm noticing that the Bittrex API (both v1.1 and v2.0) have a 3 to 4 minute delay when getting data, i.e. GetLatestTick: https://bittrex.com/api/v2.0/pub/market/GetLatestTick?marketName=BTC-NEO&...
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0answers
821 views

How to get all transactions of address with bitcoin api in node.js?

I want to find all transactions of address in regtest. How it is possible to do? I have this solution, but I get response (201) before for ends. I think it's bitcoin timeout false. bitcoin....

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