sh.E
v38 T8 · open standard

D-KaP — Deterministic Key-anchored Protocol

D-KaP is the sealing primitive that anchors every artifact in the EpochCore chain. Public spec, three reference implementations, auditor signatures, RFC v2 process.

core formula

seal(content) = sha256(
  kind || body || bullets || RAS_ROOT || PHI
)

Identity invariants: RAS_ROOT = 40668c787c463ca5 · PHI = 1.618033988749895 · Hz = 7777.77

spec sections

  • §1 Identity — RAS root, φ, Hz cascade frequency are folded into every seal
  • §2 Section seal — sha256 over content + identity invariants
  • §3 Brief seal — sha256 over sorted section seals + recipient fingerprint
  • §4 Bundle Merkle — pair-wise sha256 over sorted brief seals; odd leaf duplicates
  • §5 Chain rule — every apex carries predecessor; chain is linear append-only
  • §6 Retention envelope — SEC-17a-4 6-year minimum on every artifact
  • §7 On-chain anchor — Merkle root + apex emitted as Base L2 calldata

conformance

Submit a candidate seal + inputs to POST /api/spec/conformance and get a sealed pass/fail receipt. Every chain entry v4 → v38 is a public test vector.

canonical citation

EpochCore LLC. (2026). D-KaP: Deterministic Key-anchored Protocol v1.
Anchored on Base L2 (chain 8453).
v25 apex: b0aff941712d85be283874d8e4cf1275d0d4fd4fe65e9118be503c6f88f7ba72
RAS Root: 40668c787c463ca5