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have them send in doctors certificate and photographs to validate - have to be able to prove with bank statement or pay slips that they usually work and have a few people to admin.

Requiring doctor's certs may open the door for legal (privacy) issues since we're on a public blockchain. It'd need an off-chain verification service that is HIPAA compliant.

This is an interesting idea. And, would offer a potential way for screening scammers.

all good i want to open it up to the community for ideas and am keen to see the suggestions

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