OKX proof of reserves: 119% BCH
https://www.okx.com/proof-of-reserves
119% ~198k BCH
OKX claims to have enough BCH.
OKX has 127k BTC ... so OKX reserve ratio is about 1 vs 1.6 (BTC vs BCH)
The number of all existing BCH and BTC coins is similar, so the amount of reserves at other exchanges should be about 1:1 ... or something like that.
So Binance should have 600k BCH or more ...
EDIT:
Gate also claims to have sufficient BCH reserves:
https://www.gate.com/proof-of-reserves
24k BTC vs 45k BCH
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