Release notes: v2.2.0

Why this release

v2.2.0 is the trust-layer release. It turns Akmon from "the review-aware agent" into the
producer-agnostic, tamper-evident evidence & verification layer that sits on top of whatever agent
you already run — and makes that claim provable: a third party can verify an Akmon bundle's
signature, and now its operator attestation, offline with nothing but openssl — no Akmon
binary, no cloud. Everything is additive; existing journals and bundles remain readable.

Top user-facing wins

• Import any agent (OpenTelemetry GenAI): akmon otel import <trace.json> turns an OTLP/JSON
  trace into a verifiable AGEF session — including the legacy ≤ v1.36 message-event form that
  most deployed instrumentations still emit by default, not only the v1.37 structured attributes.
  Capture fidelity is honest: imports are capture_level=structural (metadata only), never silently
  presented as a full recording.
• Generate a signing key: akmon bundle keygen produces a usable Ed25519 key (PKCS#8 v2) with a
  0600 private-key file. (openssl genpkey emits PKCS#8 v1, which is rejected.)
• Verify offline with stock openssl (metric F.1): akmon bundle prove-openssl emits
  statement.bin / signature.bin / pubkey.pem so anyone can check a signature with no Akmon and
  no cloud.
• Operator-identity binding (AGEF v0.1.3): akmon bundle attest records a separately-signed
  AGEF-OPERATOR-v1 claim binding an accountable operator/human to a session — addressing the EU AI
  Act Art. 14 / Art. 12(3) "which operator" requirement without PKI, DID, or cloud. akmon bundle verify and agef-verify gain --operator-key / --require-operator; prove-openssl --operator-key makes the operator claim openssl-verifiable too. Verification attaches trust to the
  key, never to the self-asserted identity string.
• Standalone agef-verify is now shipped in the release alongside akmon, with SHA-256 checksums
  and an SBOM, so auditors can verify on an air-gapped machine.

Upgrade notes

• Safe, additive upgrade from v2.1.0. AGEF bumps 0.1.1 → 0.1.3, but the bumps are minor/additive:
  0.1.1/0.1.2 readers still read 0.1.3 bundles and ignore the optional signatures[] /
  operator_attestations[] fields. Unsigned/unattributed bundles serialize byte-identically.
• The AGEF-SIG-v1 head signature and the prove-openssl byte output are unchanged by the operator
  layer — adding an operator attestation never invalidates an existing head signature.
• The canonical AGEF specification (radotsvetkov/agef) is being updated to v0.1.3 in lockstep.

Verifying your download

Each release publishes SHA256SUMS. After downloading, check it:

sha256sum --check SHA256SUMS

Full Changelog: https://github.com/radotsvetkov/akmon/compare/v2.1.0...v2.2.0