Hello,

We built www.cryptobooks.net: a service that stores in database the order books' historical data for all major cryptocurrencies  and displays it in a chart.
The historical data is displayed for 3 (soon 4) different time frames:
- day (order book stored every 5 mins)
- week (order book stored every 30 mins)
- month (order book stored every 2 hours).
- year (soon! order book will be stored every 24 hours)

The objectives of this tool are:
- (1) Spot major resistances and supports at a glance on the chart! As price levels with big amounts of buying/selling orders are displayed with stronger green/red color and line thickness.
- (2) Download the data of a specific cryptocurrency and time frame in a JSON format containing every bid/ask order of every order book in that time frame.

So far we have pushed the MVP in production: only the display of historical data is available. The data download will be available very soon!

Can you please give us feedback about this tool: do you think it is useful? what would you change, remove or add?

Thanks a lot for taking the time to drop us a reply, guys!