@0x0 yes! DID is a pretty useful standard. And its rekey capability is clutch.
It sounds like you’re averse to “cryptocurrency” so I am a bit trepidatious about mentioning https://chia.net - but it’s a non-global-warming blockchain with DID support and advanced custody tooling (UI still in development).
Their “Chia Cultivation Grants” might also be a useful source of funding: https://www.chia.net/grants/