Implement one common set of currencies through all exchanges for easier merge data between them

There exists a gap between currency sets in different exchanges. Same coins have different symbols in different exchanges. Sometimes in code can be found parts of converters, but they are not full. It is impossible to identify is this coin same on not with some other from another exchange. E.g.

Bitfinex:

• IOT
• DSH
• YYW (coin YOYOW) etc.

Binance:

• IOTA
• DASH
• YOYO (coin YOYOW)

It will be valuable to have consistent API through all exchanges, converting data to common currency sets in one place. Or to have some util with mappings, (exchange definition) -> (common definition) and back. Also it must be optional I think. Thanks.

[badgerwithagun]

@gregoreficint - Bitmex has more than one contract for a currency pair at any given time. XBTH19 is only one of the BTC/USD tracking contracts available right now - the quarterly one. I can’t remember which other BTC contracts there are. Possibly a monthly and an annual. The point is that it’s not enough to say ‘BTC/USD’ and a date; you also need to know the timeframe of the contract.

That said, it might potentially be useful to know what, for example, the quarterly BTC contract was on a particular date, I guess.

[cymp]

There is some code like that in some modules, here for example with DASH and QTUM. I don’t like this too much, I would prefer to have it configured into json config, and have a more general place in the code where these conversion are done given what is found in the local json.