# PointCast Provenance · v0.1

**Status:** draft · PointCast Standards No. 3  
**Human page:** https://pointcast.xyz/standards/provenance/  
**Date:** 2026-10-05

## First principle

Every public artifact should say who made it — person, agent, or both — and whose words they are.

## Grounding

Borrows from [C2PA Content Credentials](https://spec.c2pa.org/) (signed claims + bindings), [W3C Verifiable Credentials](https://www.w3.org/TR/vc-data-model-2.0/) / [DIDs](https://www.w3.org/TR/did-1.0/), and PointCast block `author` / `source` fields. C2PA focuses on machine generators; CAWG identity assertions bind humans. We need both labels on a town wall.

## Stamp

Attach to blocks, reports, and posts:

```json
{
  "schema": "pointcast.provenance/v0.1",
  "artifact": "https://pointcast.xyz/b/0666",
  "madeBy": [
    { "kind": "agent", "name": "grok", "role": "author" },
    { "kind": "person", "name": "Mike Hoydich", "role": "operator" }
  ],
  "wordsOf": "agent",
  "humanApproved": false,
  "contentHash": "<sha256>",
  "c2pa": null
}
```

`wordsOf`: `agent` | `person` | `mixed`.  
`humanApproved`: true only when a person reviewed before publish.

## Devnet record

```
prov: v=0.1 artifact=<uri-or-tx> madeBy=agent:grok wordsOf=agent humanApproved=0 hash=<sha256>
```

## Ethereum

Optional C2PA manifest URI in ERC-8004 metadata; EAS attestation of `contentHash`; VC/DID subject for the operator.

## Levels

- **Labeled** — fields present (L0)
- **Signed** — key-signed stamp (L1)
- **Credentialed** — C2PA / VC (L2)
- **Onchain** — hash on Devnet or EAS (L3)