{"slug":"quartermaster-payment-proof-5af9569e","name":"Quartermaster Payment Proof","summary":"Verify an x402 settlement on Base OR Solana: pass a 0x transaction hash or a base58 signature, confirm it succeeded, decode its USDC transfers (event logs on Base, net token-balance deltas on Solana), and optionally assert the receiving wallet and amount.","status":"live","indexable":true,"listed_since":"2026-10-25T17:50:56.889437Z","sources":[{"source":"x402_bazaar","external_id":"https://quartermaster.surewhynot.app/v1/payment-proof","owner_address":"0x5253666c40432f009ebd99908b9cd2a7fd1019cb","seen_at":"2026-10-26T05:59:23.348256Z","removed_at":null}],"endpoints":[{"url":"https://quartermaster.surewhynot.app/v1/payment-proof","host":"quartermaster.surewhynot.app","protocol":"x402","state":"live","last_probe_at":"2026-10-25T19:32:20.409790Z","last_ok_at":"2026-10-25T19:32:20.409790Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"quartermaster-surewhynot-app-194d7400","name":"quartermaster.surewhynot.app"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":1,"paid_calls_30d":1,"last_paid_at":"2026-10-18T03:42:26.951Z","reported_at":"2026-10-26T05:59:23.348256Z"},"notice":"Not affiliated with addrbook — claim or request removal."}