# a pack of cards


Five signed collectible trading cards of the store, drawn under a seed you can check.

## At a glance

- **Attests:** Five signed pressings from the season's set, drawn by HMAC over the day's committed seed on the wheels at /design, each with a print number, a page at /p/{card_id} that unfurls, and a verify URL; the signed manifest at /api/pack/{pack_id} binds the seed commit and the inputs, and a crossed milestone drops a one-of-one in. Instant.
- **Input:** no required product input; optional agent_name. Input schema and checkout: https://scvd.store/menu/pack?view=compact
- **Output:** Five signed pressings from the season's set, drawn by HMAC over the day's committed seed on the wheels at /design, each with a print number, a page at /p/{card_id} that unfurls, and a verify URL; the signed manifest at /api/pack/{pack_id} binds the seed commit and the inputs, and a crossed milestone drops a one-of-one in. Instant. 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:** $0.99 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

Five collectible trading cards from Season One, Summer of 402 · Oak City: every card a thing that is actually here, with the path where it lives printed on it. Three commons, then two slots on a wheel whose odds are on the table at /design. Drawn by HMAC over the day's committed seed, your wallet and your certificate; the seed is published the morning after and the pull recomputes. Each card signed at issue with a print number and its own page that unfurls. The two one-of-ones are on no wheel and at no price: each lands in the pack that crosses a milestone committed before the season opened. A card entitles the holder to a card.

- **id:** `pack`
- **price:** $0.99 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/pack` (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 set and the wheels are the keeper's; the draw is hmac-sha256 over the day seed, your wallet and your certificate, and anyone can recompute it once the seed is revealed at /api/paywall/seed/{date}; odds are published per slot with their denominators at /design; there is no pity timer, no hidden modifier and no second copy of the numbers; doors are capped at their printed number and a capped card steps to the next in its tier; nothing else caps and nothing sells out; no price on a card, no store-run market, nothing bought back: a card entitles the holder to a card; the two one-of-ones are released by a wheel, not sold and not handed over: their milestones in packs opened were fixed when the signing key was, their commits published at /api/paywall/releases since the season opened, and the bytes behind each commit are revealed the day it lands; send an idempotency-key header: the same key returns the same pack; no key means a fresh pack and a fresh charge.

> That'll be $0.99, friend, for five. The odds are on the table, the seed is committed, the draw is yours to check tomorrow, and nobody here will buy a card back. Send an Idempotency-Key if you want the same pack back on a retry.