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Audit Archive Export

Exporting the audit archive to customer-controlled storage

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The audit archive is written to the configured S3-compatible bucket or filesystem archive root. Operators can copy archive objects to customer-controlled storage with ordinary object-store tooling after each anchor has been published.

  • meta-roots/*.json: signed meta-root manifests.
  • batches/<tenant_id>/<batch_id>/events.ndjson.zst: compressed canonical event JSON lines for each batch.

Build the verifier from the repository (release images ship service containers only, not this binary):

Terminal window
cargo build --release -p nexus-audit --bin nexus-audit-verify

Then run:

Terminal window
nexus-audit-verify verify --archive-path ./archive

Only transfer archives that pass local verification. If verification fails, follow Runbook: Audit Verifier Failure.

See also Audit Event Contract for the schema and Merkle construction behind these archive objects, and Audit Proof Format for the inclusion-proof structure the verifier checks.