What's the point of a blockchain here? It suffers the same flaws as when proposed for things like property ownership records. You don't actually want an immut

What's the point of a blockchain here? It suffers the same flaws as when proposed for things like property ownership records. You don't actually want an immutable ledger, for one thing. Professional certifications can usually be revoked. Log the revocation as well? Might as well just publish the certifications publicly and sign them (and their revocations). Such a public database would be about as secure with none of the overhead. IMO blockchains are massive overkill if you just want to redundantly publish something.