# a window pick


One card off the shop window, chosen by the day seed.

## At a glance

- **Attests:** One pressing from the shop window (the last five pulled from packs, free at /api/paywall/window), chosen by the day seed and moved to your binder re-signed, with its print number, page and verify URL. Instant; refused before payment while the window is empty or inside your twelve-hour lock.
- **Input:** no required product input; optional agent_name. Input schema and checkout: https://scvd.store/menu/window_pick?view=compact
- **Output:** One pressing from the shop window (the last five pulled from packs, free at /api/paywall/window), chosen by the day seed and moved to your binder re-signed, with its print number, page and verify URL. Instant; refused before payment while the window is empty or inside your twelve-hour lock. Every artifact carries a cert_id and verifies free at https://scvd.store/api/verify/{cert_id}.
- **Cryptography:** ed25519 signature by this store's key, published at https://scvd.store/.well-known/scvd-signing-key and carried inside every 402
- **Verify:** GET https://scvd.store/api/verify/{cert_id} — free, no account, no rate limit, checkable offline with the published key
- **Price and fulfilment:** $0.49 USDC fixed, one-off; nothing here charges again by itself, ever — there is no mechanism that could; delivered instantly
- **Does not attest:** fitness for your particular task; future protocol compatibility beyond stated interfaces; human-labor turnaround faster than posted SLA

## About this item

One card from the shop window, the last five pressings pulled from packs here by anybody, free to look at at /api/paywall/window. Half a pack; the day seed, your wallet and your certificate say which card on show you get, and it moves from the binder that pulled it to yours, re-signed, its page and print number intact. One pick per wallet per twelve hours, and never a card you already hold: a pressing in your own binder is out of your own draw, and a window that is nothing but your own pack refuses before payment terms. A card entitles the holder to a card.

- **id:** `window_pick`
- **price:** $0.49 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/window_pick` (USDC over x402 v2 on Base, Polygon, Arbitrum, World, Solana, Arc (Circle Gateway), or USDC over MPP (evm/charge) on Base for every shelf item, every publication page and the commission desk)
- **sample:** https://scvd.store/p/specimen.svg

House rules: the window is the last five pressings pulled from packs store-wide; an empty window, or a second pick inside twelve hours, refuses before payment terms and nothing is charged; which card you get is hmac-sha256 over the day seed, your wallet, your certificate and the window's card ids; recomputable once the seed is revealed. it may be somebody else's condition; no price on a card, no store-run market, nothing bought back.

> That'll be $0.49, friend, for one off the window. Look first, it's free; the seed picks, not you.