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.)
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))