@NickSzabo4 could you please tell me what you believe the flaws of credential verification on the blockchain are? Is this a subset of identity management in your opinion?
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Thank you for your considered response. The "who issued it" is where I see signatures being key (pun unintended), but the blockchain to me is crucial for cases where the transaction itself may be used as evidence. E.g. A safety manager received a credential prior to on-boarding.
Generally speaking this kind of thing is not socially scalable, so it doesn't interest me much.