Attestations for
  ghcr.io/boks-sh/sed@sha256:8cb150e7d383dc80778641c9bd0826e2237d31aced5a2f977e3cef904b1eeabd

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/sed@sha256:8cb150e7d383dc80778641c9bd0826e2237d31aced5a2f977e3cef904b1eeabd

=== 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)