VargaProof Protocol V1 (VPF1)
==============================

Network: VargaMesh Mainnet
Purpose: Proof of existence for an exact SHA-256 digest

On-chain payload
----------------
Magic:       VPF1
Magic hex:   56504631
Digest:      32-byte SHA-256
Payload:     56504631 || SHA256
Payload size: 36 bytes
Storage:     OP_RETURN in a normal VargaMesh transaction

Canonical script for a VPF1 payload:
  OP_RETURN <56504631 + 64 lowercase/uppercase hex characters>

A confirmed VPF1 transaction proves that the exact digest was included no later
than the confirming VargaMesh block. It does not by itself prove authorship,
ownership, truth of the document contents, contractual validity, or that nobody
possessed the same data earlier.

Privacy
-------
The VargaProof web client hashes selected files locally. The file itself and its
filename do not need to be transmitted or stored on-chain. Only the SHA-256
digest is submitted for anchoring or lookup.

Public API
----------
GET  /api/v1/proof/status
GET  /api/v1/proof/lookup/{sha256}
GET  /api/v1/proof/recent
POST /api/v1/proof/anchor   JSON: {"sha256":"<64 hex>"}
GET  /api/v1/proof/openapi.json

Version: VPF1 / service v1.0.0