{"slug":"crc-16-multiple-variants-3f766415","name":"CRC-16 (multiple variants)","summary":"CRC-16 over the input payload in one of several standard variants (ccitt-false, xmodem, modbus, ibm; default ccitt-false). Returns the checksum as an unsigned integer and 4-digit hex. Non-cryptographic.","status":"live","indexable":true,"listed_since":"2026-10-25T17:53:27.505995Z","sources":[{"source":"x402_bazaar","external_id":"https://checksum.openverbs.com/v1/crc16","owner_address":"0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a","seen_at":"2026-10-27T21:43:14.801666Z","removed_at":null}],"endpoints":[{"url":"https://checksum.openverbs.com/v1/crc16","host":"checksum.openverbs.com","protocol":"x402","state":"live","last_probe_at":"2026-10-27T01:06:18.797731Z","last_ok_at":"2026-10-27T01:06:18.797731Z","tools_count":null,"tools_changed_at":null,"uptime_24h":null,"uptime_30d":1.0}],"also_listed_as":[{"slug":"checksum-openverbs-com-34323050","name":"checksum.openverbs.com"}],"payment_options":[{"endpoint_url":"https://checksum.openverbs.com/v1/crc16","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"2000","pay_to":"0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a","observed_at":"2026-10-27T01:06:18.797731Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":1,"paid_calls_30d":1,"last_paid_at":"2026-10-05T13:12:59.287Z","reported_at":"2026-10-27T21:43:14.801666Z"},"assessment":{"method":"2026.10.2","checks":[{"id":"answers","state":"pass","reason":"Answered a check 23 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 2 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"1 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-28T00:46:00.067155Z"},"identity":{"endpoint_domains":["openverbs.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[],"human_backings":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}