17
votes
Anyone know of an API I can get historical price time series for multiple coins
I am developing the ccxt cryptocurrency trading library, check it out on GitHub:
https://github.com/kroitor/ccxt
It is a library for cryptocurrency trading and e-commerce with support for many ...
- 428
17
votes
Accepted
What are the most comprehensive APIs for cryptocurrency market data?
Most exchanges offer API solutions for market data. Here are some examples:
GDAX
Bittrex
Kraken
WAVES DEX
CryptoCompare has an API that aggregates data from many exchanges, and they also offer many ...
- 421
11
votes
Accepted
How to estimate optimal fees for transaction in bitcoind?
The other answer is outdated. estimatefee is deprecated.
You should use estimatesmartfee
Please use estimatesmartfee for more intelligent estimates.
Estimates the approximate fee per kilobyte ...
10
votes
How to build a bitcoin trading bot
Building trading bots that interact with the exchanges is very similar to interacting with other RESTful APIs. Basically, you make query objects to whichever exchange you like to use. Here is a simple ...
- 111
9
votes
How to get an address's balance with the bitcoin client?
import all address using "importaddress"
you can get balance using "listunspent", but you must sum all unspent amount per an address.
- 91
9
votes
Accepted
How Do HD Wallets Keep Track of all accounts?
In general, HD Wallets use the following logic for how many addresses to query, and when to stop:
Start with account 0, generate gap limit number of addresses (usually 20)
Check for any transactions ...
- 16.9k
9
votes
Accepted
What is the difference between secp256k1_ecmult_gen and secp256k1_ecmult?
How should these two functions be used properly?
A simple answer is "not at all". Those functions are not exposed in the public API of libsecp256k1, and that's the reason why they don't ...
- 451
8
votes
How to check Bitcoin wallet balance without any API
If you are not going to use a 3rd party API, you'll need to run a node and add each address you want to query as a watch only address. If you are looking to create a database with all addresses, ...
- 5,596
8
votes
How to estimate optimal fees for transaction in bitcoind?
Have you tried using the estimatefee RPC call? This will calculate the amount needed per kilobyte.
For example calling bitcoin-cli estimatefee 2 would provide a fee per kb to try to get confirmed ...
- 5,596
8
votes
Anyone know of an API for RSI and other indicators?
I had the same problem, couldn’t seem to find a good API that supported most of the popular indicators, and at the same time covered all the exchanges. So I decided to start up a project for this. So ...
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7
votes
Accepted
Anyone know of an API I can get historical price time series for multiple coins
Found the data on crypto compare
const endpoint = 'https://min-api.cryptocompare.com/data/histoday?aggregate=1&e=CCCAGG&extraParams=CryptoCompare&fsym='+ ticker.toUpperCase() +'&limit=...
- 461
7
votes
Accepted
Bittrex API rate limit
This question has been asked in the #api-developers channel of the Bittrex Slack Group a few times.
Here's the important fragment of the discussion with somewhat an answer to our question.
July ...
- 186
7
votes
can you use blockchain.info instead of hosting bitcoind for a website
You probably could - blockchain.info has certainly taken steps towards letting you, and provide a reasonably complete API, along with websocket streams for real time data.
That said, you probably ...
- 16.9k
6
votes
How are Fees Charged at Kraken?
How are fees charged?
They are charged in the currency fee set during a trade.
Due to a discreet nature of trade matching process, it's rather tricky to give a definite answer on how each individual ...
- 1,672
6
votes
Accepted
What's the POST endpoint to broadcast a transaction in copay's server?
Multisig and singlesig wallets use the same flow. A Tx proposal need to be created in singlesig wallets also. Copay syncronize across devices, so you can have a non-signing copayers in a 1-1 wallet ...
- 223
6
votes
Accepted
what is the Volume and BaseVolume reported from bittrex API?
Volume is the amount traded in that altcoin over the past 24 hours.
In the case of BTC-DGB, this is the amount of DGB that has been traded in 24 hours.
BaseVolume is the total value traded in the ...
- 176
6
votes
How should I handle cases like this where the documentation for Bitcoin Core states one thing, and the actual program does something else?
In the example RPC results, it will show whether the result is a JSON array by including brackets [] or it will show if it is a JSON object (associative array) by using curly brackets {}. If the ...
- 166
6
votes
Accepted
API for large number of queries to different addresses every few minutes
You can use a self-hosted (but low-burden!) instance of Esplora.
Blockstream is also exposing an instance for free (at the moment) at blockstream.info.
Disclaimer: if you take part of Bitcoin as an ...
- 7,027
5
votes
How to get an address's balance with the bitcoin client?
"We'll hopefully soon get support for (...) watch-only wallets, where you can just add addresses you'd like to track, without having their keys."
...
- 51
5
votes
List of blockchain explorer APIs?
https://blockchair.com/api
API for BTC, BCH, LTC and ETH blockchains.
- 49
5
votes
Anyone know of an API I can get historical price time series for multiple coins
http://www.cryptocoincharts.info
Advance API to more than 100 exchanges: cryptocurrency pricing, OHLC and volume data from multiple exchanges.
BTC38, BTCC, BTER, Bit2C, Bitfinex, Bitstamp, Bittrex, ...
- 59
5
votes
Accepted
Valid asset_pair for Kraken.com
the list is found here:
https://api.kraken.com/0/public/AssetPairs
Also here's a list of assets:
https://api.kraken.com/0/public/Assets
- 64
5
votes
Accepted
Does Bitcoin RPC API have a realtime websocket?
Since you only care about transactions involving your wallet, you can specify the walletnotify option in your bitcoin.conf or your bitcoind start command.
Since walletnotify allows you to execute an ...
- 16.9k
5
votes
what is blockchain.info testnet api url?
Have you checked https://testnet.blockchain.info/api?
For instance, to get a raw tx:
https://testnet.blockchain.info/rawtx/tx_id
- 3,192
5
votes
Accepted
How to use blockstream's REST api to retrieve JSON output on an address?
As others have said you can use https://blockstream.info/api/address/bc1qgsmfaz22lzy08wqjspd8xtm43hal5tgz4hyac6 for the JSON - the doc is in reference to running a local instance - the exact endpoint ...
- 395
5
votes
Accepted
What is the request limit number in the blockchain.info API?
Should be 1 request every 10 seconds:
https://www.blockchain.com/api/q
- 181
5
votes
Accepted
Bitcoin-cli responding but not curl
Found it out, you just need to give it a username and password. You can add them to a bitcoin.conf file in your datadir. This file isn't automatically created. The default datadir is at ~/.bitcoin, so ...
- 171
5
votes
How to get list of Bitcoin Block Hashes by Block Number?
Easy enough with your own Bitcoin node.
for height in {1..500000}; do echo "$height `bitcoin-cli getblockhash $height`"; done
- 15.4k
4
votes
huobi.com API to get latest trade price, bids and asks?
I had some trouble finding it there but then I found it in "reference"
https://github.com/huobiapi/API_Docs_en/wiki/REST_Reference
You can use normal http queries like on other exchanges so to get an ...
- 141
4
votes
List of blockchain explorer APIs?
Insight by bitpay:
https://insight.bitpay.com/
Block Explorer:
https://blockexplorer.com/
Bitcoin Chain:
https://bitcoinchain.com/block_explorer
There are many more in development, but these are ...
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Only top scored, non community-wiki answers of a minimum length are eligible