CII' FOSS best practices criteria
bestpractices.coreinfrastructure.org
bestpractices.coreinfrastructure.org
Perhaps there needs to be a Platinum level which involves storing the hash of each release in a distributed append-only log, with multiple third parties vouching that they can build the binary from the published source.
Obviously I'm thinking of something like sigstore[0] which the Arch Linux package ecosystem is being experimentally integrated with.[1] Then there's Crev for distributed code review.[2]
[0] https://docs.sigstore.dev/