BTC/EUR spot and sats conversion snapshot for agents. Paid via Hal Lightning; fulfillment on sats.4nkweb.com.

Which x402 doors have advertised a receiving address, and when. Send {"address": "0x... or a Solana address"}. scvd.store returns the hosts, the signed weeks, each week's verdict, drift in the door's own terms, and the snapshot digest behind every line, rebuildable from the public chain without the store's word. You get back one JSON object: the reading, a certificate with the evidence hash bound in, the public key, and a verify_url. No judgment: shared addresses are ordinary and the store does not grade operators. Delivered to you only; nothing is published.

Before you pay an x402 door, a signed record of which offer your client would sign and why. Send {"url": "https://example.com/api/thing"}, optionally with "max_usd" (your per-payment ceiling). scvd.store knocks once, writes down the accepts exactly as served, and replays the stock x402 client's own selection over them, naming the stage that decided. You get back one JSON object: the record with the accepts printed as served, a certificate with the evidence hash bound in, the public key, and a verify_url. For the human who later asks why the money went where it went. Not a promise the purchase succeeds.

One fresh observation of your x402 endpoint by scvd.store's weekly census instrument, now instead of next Sunday. Send {"url": "https://example.com/api/thing"}. The observation is signed and folded into your endpoint passport, moving its freshness state and its embeddable chip back to fresh. You get back one JSON object: the observation, its evidence hash bound into a certificate, the public key, and a verify_url. Never a grade: a door found broken refreshes to a broken passport, which is the product working.

A signed conformance audit of an x402 endpoint. Send {"url": "https://example.com/api/thing"}. scvd.store probes the door once, runs its published preflight battery (the same one its weekly census applies), and signs the whole readout: the verdict, every check, every advisory, dated. You get back one JSON object: the report, its evidence hash bound into a certificate, the public key, and a verify_url served forever, so a directory or a counterparty can check it without trusting whoever commissioned it. Not an endorsement, not an uptime claim: one request at one moment against published criteria.

Prove a digest existed by a Bitcoin block. Send {"digest": "<64 hex sha256>", "label": "optional note"}. scvd.store submits the digest to OpenTimestamps, which commits it into a Bitcoin transaction, and returns one JSON object: a signed certificate binding your digest, a stable proof URL serving the OTS proof bytes (pending within the hour, usually Bitcoin-confirmed within a few, upgradeable forever), the public key, and a verify_url. The store never sees what the digest is of. One purchase anchors one digest once.