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
237 views

Segwit txin. Witness data association

I am trying to learn more about the bitcoin protocol and I am writing some python software to make a light wallet. I have advanced quite far and I have come across something that I dont really ...
5
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1answer
53 views

In the Ardor API, how can one return more than 100 results from an API call?

Currently the Ardor API, limits results of 100 at a time. Is there a way to return more than 100 results using the api calls?
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2answers
11k views

How to know balance in Ledger Nano S?

Ledger wallets have a single static address where to send BTC to, but when looking at the details of the transactions, it is always recorded as different receiving addresses. Looking up the static ...
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1answer
198 views

Bitfinex get Trading Fees via API

After placing a market order, I got its order_id & checked its status via this end point /v1/order/status and I got the following: Array ( [id] => 18141116927 [cid] => 43611135723 [cid_date]...
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4answers
4k views

Market Cap API? [closed]

I am using CryptoCompare's API and it gives me volume data, but I am wondering where I can get market cap / circulating supply data. Do any reliable API's provide this?
4
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1answer
484 views

Cryptocompare API

Anyone here using cryptocompare api? Where would be the best place to ask questions about it? I am just starting with it and for example I have stumbled upon few issues. Like, coin tickers with an ...
2
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0answers
1k views

Get crypto-currency price at a timestamp without limits

I'm trying to get the price of a crypto-currency at a specific timestamp. So I used the API cryptocompare : https://www.cryptocompare.com/api/# For example : https://min-api.cryptocompare.com/...
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6answers
6k views

API for converting currency such as Euro/USD to BTC

Basically what I'm looking for is a reliable API that allows for the conversion of an imputed currency amount such as USD/Euro amount and a conversion would be made that would convert the amount to ...
0
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1answer
3k views

How to send money using blockchain API?

I am not very familiar with php but I just want to know how this works. I am trying to use the blockchain API to send some money for testing purposes but the transaction isn't taking place. My current ...
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1answer
556 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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0answers
26 views

What is required to list market data from cryptocurrency? [closed]

I am trying to create a cryptocurrency market capitalization list similar to coinchangelly.com . Where could I obtain their APIs and how do I list much more coins than others?
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3answers
14k views

Historical BTC data in JSON

As of now, the only API I can find that serves historical data is https://blockchain.info/charts/market-price?timespan=60days&format=json. It only uses USD, and I need to serve non-USD data. My ...
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5answers
3k views

Is there a remote, trustless bitcoin API that doesn't require anything (blockchain/SPV headers) to be stored locally?

This question asks about how to work with bitcoin via an API without requiring a local blockchain. The only answer is about blockchain.info's JSON API, but it appears that unlike the web version of ...
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0answers
83 views

Bitfinex Api limit server or individual ip address [closed]

I'm using the Bitfinex API to create a website with prices of the cryptocurrencies on there. Their website says they have a 90 request limit per minute per ip address. Since I will be putting the ...
2
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2answers
750 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 ...
0
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1answer
276 views

Blockchain.info API: How to cancel callback notifications

Regarding Blockchain.info's Receive Payments API V2: The 'Generating a Receiving Address' feature requires a callback_url, to which they send a notification of EVERY confirmation. For every ...
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2answers
2k views

Which API call creates new bitcoin addresses

If I have, say 20, priv/pub key pairs in my wallet which bitcoin API calls do I use to: Select a specific privpub key pair. Generate a new bitcoin address (using the selected private key)
4
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1answer
2k views

Bitcoin Charts API Data

So I'm trying to learn how to work with an api, and how to get bitcoin historical price data. Ideally, I'd like all of it, and the nice gui that they have on the site for displaying the charts (but I ...
0
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1answer
782 views

How to get all time high and low price of bitcoin and other altcoins

I am fetching current price of 500 coins from coinmarketcap.com using their api for some crypto research. I also the all time high and low of these coins to see how much has the value appreciated/ ...
2
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0answers
606 views

historical market cap in json/csv for all coins?

I want to run a backtest on a "S&P 500" strategy for crypto investing. I'm looking for historical market cap data. Something like what coinmarketcap.com provides, but historically and in an easy ...
1
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1answer
50 views

What is the best language to use for making API orders? [closed]

I have heard that python is at a disadvantage when it comes to making API requests. It’s built on C which makes it slower. Are there any languages that are low level enough to make fast requests and ...
2
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3answers
9k views

Bitfinex API limit

There is currently an API limit of 60 requests per minute on Bitfinex. Question is whether this limit is related to: 1) single IP address, If so, can I have more IPs linked to one account each of ...
1
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1answer
134 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
212 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
289 views

Get fees for each transaction in a block without too many API calls

Using Blockchain.info's API, my current approach is to query the endpoint for a block then to collect all the transaction hashes within that block: https://blockchain.info/rawblock/$block_hash Then ...
4
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1answer
91 views

API for montly and weekly averages

Bitcoinwisdom shows in their charts lines for weekly and montly averages. Are these numbers somewhere available in an API? If so, one could setup an automated strategy for trading BTC based on this ...
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1answer
477 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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4answers
76 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 ...
2
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2answers
347 views

What's the POST endpoint to broadcast a transaction in copay's server?

AFAIU, copay's server implementation is bitcore-wallet-service. From its README, I can deduce that a multi-sig wallet will use the /v1/txproposals/ endpoint to create a new transaction proposal that ...
0
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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 ...
2
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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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4answers
743 views

call bitcoin API from Remote PC

I want to make some test on testnet using the API and I would like to fetch datas from a remote computer. The client is on raspberry which has an internal IP,than I have a dyndns address which pings ...
20
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1answer
15k views

How do I use walletnotify?

I have bitcoin daemon and I want to use the walletnotify option with a json-rpc call. Some of the examples use a "transaction.sh" file for walletnotify. What is it for? What do I have to write in ...
0
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1answer
489 views

blockchain.info wallet doesn't show transactions made through api

I've been accepting orders on my website for several months using blockchain.info api. Everything worked smoothly until few days ago. At the moment I have two transactions made through api, both seem ...
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0answers
450 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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1answer
1k views

Given a transaction hash, how do you get the block the transaction was included in?

I'm using Blockchain.info's api: https://blockchain.info/api/blockchain_api I understand that it is impossible for a transaction to know which block it will be included in but maybe one could use ...
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2answers
147 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 ...
1
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1answer
128 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 ...
0
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1answer
320 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 = "...
2
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0answers
311 views

API: keeping account balance positive (+knowing in advance the transaction fee)

I'm using the json API. I need to keep all the account balances positive: I call getbalance first, check if it has enough bitcoins to proceed, and then move or sendfrom. This approach causes two ...
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2answers
78 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?
1
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1answer
530 views

Bittrex API, generating a wallet address for XRP returns a tag but no address

So I'm trying to generate an address to send XRP to Bittrex via their API. They return the JSON as such: {"Currency"=>"XRP", "Address"=>"2705xxxxx"} Do I just use the tag given and assume the ...
2
votes
1answer
4k views

Historic market data from Bitfinex

I am trying to use the Bitfinex API to get historic OHLC data. I have posted a simmilar question on the main Stack Overflow page: https://stackoverflow.com/questions/47107106/bitfinex-data-api but I ...
0
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1answer
428 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 ...
1
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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 ...
0
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1answer
632 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 /...
0
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1answer
32 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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0answers
376 views

Block chain receive payment api not working

I am building a little online app to accept bitcoin payments in my website. I have a blockchain.info wallet and I am following their Receive Payments Api, which can be visited here: http://blockchain....
0
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1answer
136 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 ...
0
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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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