# A Sheaf of Attestations

Up to 20 settlement attestations in one purchase. Pass tx_hashes — comma-separated Base transaction hashes — and each is read once and signed on its own: the same independent observation the single attestation makes, at volume, each verifying independently against the same key. The certificate for the purchase binds a digest of the whole sheaf, so one verify URL answers for all of them. Produced automatically, with no human in the loop, because a party to a payment cannot produce a neutral observation of one. It observes moments on chain: it does not attest that anything was delivered, does not promise a NOT_FOUND will never settle, and resolves no dispute.

- **id:** `attestation_bundle`
- **price:** $0.05 fixed, one-off; nothing here charges again by itself, ever — there is no mechanism that could
- **fulfillment:** delivered instantly
- **buy:** `GET https://scvd.store/api/buy/attestation_bundle` (USDC over x402 v2 on Base, Polygon, Arbitrum, World, Solana, or USDC over MPP (evm/charge) on Base for every shelf item, every publication page and the commission desk)
- **sample:** https://scvd.store/samples/attestation-bundle.json

House rules: give 2 to 20 base transaction hashes in the tx_hashes query parameter, comma-separated, no duplicates; each hash is observed once and signed on its own; the bundle is a purchase shape, not a different artifact; observes settlement only, never delivery; one read per hash at one moment; no polling, no retry, no second look; per-hash narrowing (payer, recipient, nonce, amount) is the single attestation's feature; the sheaf takes hashes only.

> A nickel for the sheaf. Each receipt signed on its own, every one built to hold in a room where nobody trusts you.