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Verifying the artifacts

First, download the checksums.txt file, for example, with wget:

wget 'https://github.com/charmbracelet/{{.ProjectName}}/releases/download/{{.Tag}}/checksums.txt'

Then, verify it using cosign:

cosign verify-blob \
  --certificate-identity 'https://github.com/charmbracelet/meta/.github/workflows/goreleaser.yml@refs/heads/main' \
  --certificate-oidc-issuer 'https://token.actions.githubusercontent.com' \
  --cert 'https://github.com/charmbracelet/{{.ProjectName}}/releases/download/{{.Tag}}/checksums.txt.pem' \
  --signature 'https://github.com/charmbracelet/{{.ProjectName}}/releases/download/{{.Tag}}/checksums.txt.sig' \
  ./checksums.txt

If the output is Verified OK, you can safely use it to verify the checksums of other artifacts you downloaded from the release using sha256sum:

sha256sum --ignore-missing -c checksums.txt

Done! You artifacts are now verified!

Thoughts? Questions? We love hearing from you. Feel free to reach out on Twitter, The Fediverse, or on Discord.