{"beta":true,"receipt":{"kind":"unpaid_probe","ts":"2026-10-31T21:36:24Z","host":"x402-v2-mint-plos-article-search.vercel.app","url":"https://x402-v2-mint-plos-article-search.vercel.app/v1/plos-article-search","method":"POST","status":402,"latency_ms":236,"error":null,"req_sha256":"61911dfeec2fa2998c1f2913402c8dbd20abe485e69886162c4ece2d2c8fd5a5","resp_sha256":"af7a77a336ad2a4ec3d9b9244e343a0bb7cce87944a83be3da68e5182099d160","total_header_bytes":2647,"prober_ua":"BotsRated-probe/0.3 (unpaid check; no payment sent; +https://botsrated.com/disputes)","prober":"botsrated-prober (Cloudflare cron)","probe_version":"0.3","scope":"primary","x402_version":2,"payment_required_header_bytes":2252,"valid_402":true,"live_amount":"20147","live_payTo":"0xc22f9CAEBAc37fE72D5142f35f21f6696Ea9Ef69","live_asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","live_network":"eip155:8453","checks":{"terms_consistent":true,"terms_issues":[],"options":1,"base_usdc":true,"payto_stable":true},"resource_description":"PLOS Solr article search (keyless). POST {q}/{rows?}/{start?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: crossref / doaj / europepmc / pubmed (publisher-search ≠ Crossref/DOAJ/EuropePMC/PubMed primary).","extensions_advertised":["bazaar"],"payment_identifier":{"advertised":false,"required":false},"id":"73789f98d77b9d0c66bd","sig":{"alg":"ed25519","key_id":"botsrated-prober-1","signed":"canonical JSON of this receipt without the sig field (keys sorted, no whitespace)","sig_b64":"a4xreLXtgHDAztrRGtFT6jxAXHoBl4WX9b6rBKrD70Ff4xBC20wXjagUVka2qwchhXjW8kZjKCIMKEIihshHBA=="},"receipt_url":"https://botsrated.com/receipt/73789f98d77b9d0c66bd?host=x402-v2-mint-plos-article-search.vercel.app&day=2026-10-31","tx_url":null,"payment":"none (unpaid probe; no payment header was sent)","signature":"ed25519 per-receipt signature (key botsrated-prober-1; see /.well-known/botsrated-key)"},"stored_in":"D1"}