Trust Badges

The Sovereign Bazaar uses schema-backed trust badges. A package may only claim a badge if the registry entry includes a matching evidence object under trust.

Registry Policy

The canonical policy lives in:

nexus-forge/registry/packages.json
nexus-forge/registry/trust-badges.schema.json

The registry policy defines:

• Allowed badge identifiers
• Human-readable labels and descriptions
• Required evidence keys for each badge
• Publisher identity mode: did-vc or explicit self-published
• Package-level validation rules

Badge Truth Table

Badge	Claim	Required evidence	Proof artifact	Validation command	Display status
signed	Artifact origin and digest are bound to a signer key.	signer, key_id, signature, artifact_digest, attested_at	Detached signature plus artifact digest.	nexus bazaar validate && nexus verify <artifact>	seed-attested
reproducible	Independent rebuilds converge on the same Variant-CID.	artifact_digest, recipe_digest, rebuild_count, builders, attested_at	Recipe digest, rebuild transcript, builder identities, and artifact digest.	nexus bazaar verify-cids	seed-attested
audited	A named audit reviewed the declared source and manifest scope.	auditor, report, scope, completed_at	Audit report reference and declared scope.	nexus bazaar validate	seed-attested
no-heap	The declared runtime scope does not allocate from the heap.	analysis_tool, report, scope, attested_at	Static allocation analysis report.	nexus bazaar validate	seed-attested
no-network	The declared runtime scope cannot initiate network access.	policy, scope, attested_at	Pledge, capability, or syscall policy reference.	nexus bazaar validate	seed-attested
air-gap-ready	The package can be verified and installed without network access.	offline_bundle, dependency_closure, attested_at	Offline bundle manifest and dependency closure.	nexus bazaar validate	seed-attested

The same fields are machine-readable in trust_badges.badges. nexus bazaar validate rejects a badge definition that omits its claim, proof artifact, validation command, or display status.

Publisher Identity

Every package must declare a publisher object. The publisher identity is either DID/VC-backed or explicitly marked self-published.

The seed registry uses self-published publisher identity for its development attestations. That is intentionally weaker than DID/VC verification, but it is honest and machine-checkable.

Validation

Run the local registry validator:

nexus bazaar validate

The validator checks that every claimed badge has evidence and that badge evidence contains the keys required by the registry policy. For signed and reproducible, the evidence artifact digest must match the package variant_cid. It also rejects packages that lack publisher identity metadata.

Verification Boundary

Registry validation proves the catalog metadata is internally consistent. It does not replace artifact verification. Consumers should still run:

nexus verify <artifact>

or use the underlying nip verify flow during package installation.