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The API is at https://price.justyy.workers.dev/ basically I get prices from a few exchanges, and do the average.

Is it the same exchange set as the pricefeed repo (Bittrex, Poloniex and Binance) or a more extensive set?

It would be great to do our own volume-weighted prices from Steem's top 90% volume exchanges (as per "Option B" in my recent price feed post).

I'd be happy to help with implementing additional exchange APIs, just let me know :)

Sure, sounds like a good plan

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