Dev.to
7/22/2026

How we built the delivery evidence chain
Short summary
Appaloft is an open-source delivery platform that enforces explicit promotion and verifiable evidence at each deployment step. Its four-link chain (freeze → preview → promote → verify) uses canonical JSON manifests of file hashes rather than tarball hashes, enabling meaningful dedup, mutation detection, and path safety. The system fails closed: absent evidence never silently passes, and secret scanning runs before artifacts become immutable.
- •Appaloft's evidence chain links approved artifacts to running workloads via freeze → preview → promote → verify
- •Artifact identity uses SHA-256 over canonical JSON manifest-of-hashes, not tarball hashes, enabling dedup and mutation detection
- •Fail-closed design: missing evidence never passes silently; secret scanning runs at freeze time
Generated with AI, which can make mistakes.
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