# Mesh conformance vectors — v1

The `mesh/1` receipt profile, pinned to a deterministic reference serve. These
vectors are generated by the reference implementation and are byte-stable; a
conforming implementation (in any language) MUST reproduce them.

```text
cargo run -p mesh-conformance --bin gen-vectors -- ../conformance/v1
```

## Files

| File | What it pins |
|---|---|
| `meta.json` | profile (`mesh.receipt/1`), algorithm (`EdDSA`, COSE `-8`), steward `did:key`, steward public key, and the wedge metric name |
| `reference/receipt.json` | the `mesh/1` wire projection of the reference receipt |
| `reference/signed_core.hex` | the canonical det-CBOR signed core (what the envelope signs over) |
| `reference/envelope.hex` | the sealed COSE_Sign1 envelope |

## The reference serve

A steward (seed `[7;32]`) registers a four-tier fidelity cascade — `cache` (F0),
`tiny` (F1), `merge` (F2), `frontier` (F4) — and serves a 64-token request with a
floor of **F1** and a ceiling of **8 J**, metered by a `HwShunt` source reporting
a fixed **3,200,000 µJ** span.

The pinned outcome:

- **Route:** `tiny` wins. `cache` is ruled out by the F1 floor; `merge` and
  `frontier` are ruled out by the 8 J ceiling. Every candidate and its reason is
  recorded.
- **Energy:** `HwShunt`, `measured_uj = 3_200_000`.
- **Wedge metric:** `uj_per_accepted_token = 3_200_000 / 64 = 50_000`.
- **Chain:** genesis receipt (`sequence = 0`, no `prev`).

## Cross-language check

Take `reference/signed_core.hex`, wrap it as a COSE_Sign1 `Signature1` structure
per RFC 9052 (protected header `{1: -8, 4: <steward bytes>}`, empty external AAD),
sign with the steward key — and you MUST reproduce `reference/envelope.hex` byte
for byte. The signed core is canonical det-CBOR (RFC 8949 §4.2.1): length-first
key order, shortest integer form, no floats/booleans/nulls.