⚓  VERIFIED SOURCE · PROVENANCE FOR AI INPUTS

Garbage in, caught and proved.

You can't make bad data good. But you can stop it becoming an invisible, confident answer. A data source vouches for its own data by hosting one file on a domain only it controls. Then any AI or app can check an input against that domain and get a sealed verdict — GENUINE, UNVERIFIED or UNKNOWN — anchored to Bitcoin. Proves the input is genuinely from its source and unaltered. Free.

1 · Become a source2 · Vouch for data3 · Check an input
The open format & how it works

A source hosts this file at https://<domain>/.well-known/sebbi-source.json. Hosting it proves domain control (only the owner can). The vouches array holds the SHA-256 of each piece of data the domain stands behind. A checker fetches the file and matches the input's SHA-256 against it. Nothing is signed by us; the proof is domain control + the sealed, dated record.

{
  "sebbi_source": "1",
  "domain": "example.com",
  "token": "vs-...",
  "statement": "example.com is the authentic source for ...",
  "issued": "2026-10-11",
  "vouches": [ { "hash": "<sha256>", "label": "Q3 price list", "at": "2026-10-11" } ]
}

Machine-readable spec: /x/vsource/spec. This proves provenance — genuine source, unaltered — not that the facts are correct; but a source that vouches stakes its own domain and a permanent sealed record, so garbage becomes attributable.

Browse the register of verified sources → · Also guard your AI's tools with MCP Shield →

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