Interestingly it is Crypto investment firm Paradigm. Not a full exchange anymore. Which is showing that big invesment firms that own bitcoin are donating some of their money in hopes that the security and improvments in bitcoin will bring their holdings up. Pretty cool.
Need to see more IMO
https://www.theblockcrypto.com/post/71452/crypto-hedge-fund-paradigm-is-now-sponsoring-a-bitcoin-core-developer
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From @sames