Attestations for
  ghcr.io/boks-sh/mypy@sha256:4a3cec602645ab22d4863fb4250a99eca2c3f8f5b56ff35639e25340a31865dc

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/mypy@sha256:4a3cec602645ab22d4863fb4250a99eca2c3f8f5b56ff35639e25340a31865dc

=== cyclonedx ===================================================
  (no attestation matches the document published now -- 1 older one(s) are attached)

=== slsaprovenance ==============================================
  (no attestation matches the document published now -- 1 older one(s) are attached)