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Changelog

All notable changes to the DSSP specification are documented in this file.

The format follows Keep a Changelog. Specification versions follow Semantic Versioning.

[0.1.3] - 2026-02-27

Added

Multi-model composition: sub-agent chain attestation
Numeric precision policy to prevent steganographic exfiltration
Sub-agent policy in contract consumer section

[0.1.2] - 2026-02-26

Added

AI agent type declarations (structured, ml_structured, llm_freeform)
Result scanning requirements (regex, NER, statistical)
Privacy budget controls (k-anonymity, differential privacy)
Document sanitization policy for prompt injection defense
Sidecar verifier specification
End-of-session attestation

Changed

Enclave type "none" restricted to public sensitivity only
Gateway operates in split-knowledge mode (metadata only)

[0.1.1] - 2026-02-25

Added

Reference implementation (Go gateway, Python agent)
Conformance test suite (Core, Attested, Sovereign levels)
PII scanner (regex, NER, statistical backends)
Test vectors for canonical JSON, Merkle chain, hash computation

[0.1.0] - 2026-02-24

Added

Initial specification draft
Document Manifest schema
Processing Contract schema
Result Envelope schema
Audit Event schema
Storage Binding schema
Common definitions schema
OpenAPI 3.1 definition
Bank statement extraction example