Changelog
You can verify the signatures of both the checksums.txt file and the published docker images using cosign.
cosign verify-blob checksums.txt --signature=checksums.txt.sig --key https://artifacts.fairwinds.com/cosign.pub
cosign verify us-docker.pkg.dev/fairwinds-ops/oss/reckoner:v6 --key https://artifacts.fairwinds.com/cosign.pub