{"updatedAt":"2026-09-19T19:50:59.182Z","prices":{"source":"the 402 this hub receives when it asks the door itself, by the method the seller stated, then GET, then POST; never from a catalogue alone","v2":"the challenge is read from the body and from the PAYMENT-REQUIRED header, whichever carries it","history":"an event per change of terms — price, payee, chain, scheme or asset — and nothing for a repaint; the fingerprint is network|scheme|asset|payTo|amount per option, sorted","cadence":{"unchangedMs":{"from":21600000,"to":604800000,"rule":"doubles while the terms hold"},"changedMs":21600000,"failureMs":{"base":7200000,"max":1209600000,"rule":"doubles per miss"},"goneAfterMs":604800000,"gone":"hidden from /x402, kept, re-asked daily; a 402 after that is a back event"},"usd":"only for dollar stablecoins with a known unit; every other asset stays in the seller's units","claimed":"what a facilitator catalogue states, kept beside the observation and never merged; reportedCalls30d and reportedPayers30d are that facilitator's count of its own settlements"},"volume":{"coverage":{"network":"base","asset":"USDC","methods":["eip3009 (AuthorizationUsed + Transfer in one transaction)","permit2 (a transaction through the x402 Permit2 proxy)"],"notCovered":["batch-settlement (many calls, one transfer, or none)","upto (one authorization, many calls)","Solana","any chain but Base"],"since":"2026-09-19T07:41:39.000Z","watermark":51528923,"lastScanAt":"2026-09-19T19:46:35.954Z","settlements":25819,"payees":298,"note":"read forward from the moment the watcher was switched on, on a public endpoint; a thirty-day window is full thirty days after `since`"},"attribution":"per payee, never per URL: nothing on-chain names a resource. A listing whose payee stands behind exactly one door may call the payee's volume its own (attribution: exact); any other is told it is looking at its operator's (attribution: payee, sharedPayTo: n)","windowDays":30,"rules":{"selfPay":"a payer that is the payee, or is the payee of any resource on the same origin, is the operator; excluded from adjusted figures and shown as selfPayShare","thin":"fewer than 3 distinct real payers in 30 days: adjusted volume is 0, flag thin","concentrated":"the two biggest payers hold more than 80% of the adjusted volume: counted, flag concentrated","sharedPayto":"the payee is named by resources on more than one origin: flag shared-payto, attribution payee","undercounted":"the payee stands behind a resource quoting upto or batch-settlement: flag undercounted"},"notCaught":["multi-hop loops: money that leaves the operator, passes through wallets this hub has never seen, and comes back as a customer","fresh payer wallets funded by the operator: indistinguishable from a real first-time buyer","facilitators: the settling signer is not looked up (it needs a receipt per transaction); the figures do not depend on it"],"viaHub":"calls this hub placed and paid for, exact by resource, with the settlement transaction the provider named on the receipt"},"provenance":{"observed":"this hub asked and was told","claimed":"a catalogue or the seller said so; not checked","reported":"a third party's count of its own traffic","onchain":"this hub read it off the chain"},"constants":{"MIN_PAYERS_FOR_VOLUME":3,"CONCENTRATED_TOP2_SHARE":0.8,"WINDOW_DAYS":30}}