Where can I get all historical trades BTC price data?
(There are some similar questions, but I am looking for high-resolution data, while the previous questions asked for lower resolution data, such as daily prices.)
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Each of these files have every trade executed on the given exchange (except the last 15 minutes or so).
You might want to try http://www.cryptodatasets.com/ It has free raw data and sampled data from Bitfinex and HitBtc (currently).
P.S. it's my website
You can also use their JSON API: http://bitcoincharts.com/about/markets-api/ to get updates to your already downloaded historical data.
Founder & developer of https://tardis.dev here. It's an API I've built that provides high resolution cryptocurrency historical raw market data — tick-by-tick trades, full order book depth snapshots & delta updates, quotes, liquidations etc. There were already services providing similar data, but were very expensive or didn't have all the data I needed - like tick by tick order book updates etc.
Check out www.kaiko.com, we offer tick-by-tick trade data for 2000+ currency pairs, over 25 of the largest crypto exchanges. Same with order book data, on a historical basis. And if you are interested, we're hiring!
You can get free intraday data for bitcoin and other cryptos here http://www.coinintraday.com good luck))