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Hello, I have an question to reddit’s big brain. What “open” and “close” prices are, if cryptocurrencies markets works for whole time, without closing hours. I’m working on machine learning project and it would help me a lot. Thanks a lot.

Hello, I have an question to reddit’s big brain. What “open” and “close” prices are, if cryptocurrencies markets works for whole time, without closing hours. I’m working on machine learning project and it would help me a lot. Thanks a lot.



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10 Comments

  1. Yeah good luck. Every single website and exchange has different times for determining when their ‘day’, ‘hour’ and ‘minute’ gets tabulated to form ‘open’ vs ‘close’ data points. They are essentially arbitrary. At best, you’ll get a handful of sites that use midnight local time as the ‘day’ start/end…the only things these ‘open/close’ indicators share is length of time between snapshots.

  2. Since those prices come from an exchange, beginning of day (open and previous day’s close) is whatever the exchange says it is.

    If these are aggregate prices from more than one exchange, it’s whatever the aggregator says it is.

  3. You can find online (some exchanges or training data providers) one minute candles history of most crypto, even tick by tick, sometimes for free, then you can build your own hourly, daily, etc.

    You can extract a lot more info from that.

    I’ve done it a few years back. Good luck on your project!

  4. If you have a full orderbook snapshot you can see what times they’re considering open/close by matching them to those pricepoints.

    The screenshot implies that the data is coming form CoinMarketCap, which who knows what mathemagic they use to derive the price but it’s probably some/all the markets they track weighted by volume or something similar. And yahoo might take the numbers from CMC and just only count direct btc/usd for the purposes of the graph above.

    [https://coinmarketcap.com/currencies/bitcoin/markets/](https://coinmarketcap.com/currencies/bitcoin/markets/) states 23,939.16 right now but not even 4% of their volume/listings are that high.

What do you think?

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