{"slug":"quantum-state-validity-201e79ec","name":"Quantum-state validity","summary":"Check a supplied single-qubit complex density matrix for unit trace, Hermiticity and positive semidefiniteness with explicit tolerance; no hardware validation. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.","status":"live","indexable":true,"listed_since":"2026-10-25T17:52:51.335583Z","sources":[{"source":"x402_bazaar","external_id":"https://www.mahastrategies.com/api/v1/compute/quantum/state-validity","owner_address":"0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28","seen_at":"2026-10-26T17:13:00.099705Z","removed_at":null}],"endpoints":[{"url":"https://www.mahastrategies.com/api/v1/compute/quantum/state-validity","host":"www.mahastrategies.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T03:52:52.732811Z","last_ok_at":"2026-10-26T03:52:52.732811Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"www-mahastrategies-com-616da621","name":"www.mahastrategies.com"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":1,"paid_calls_30d":1,"last_paid_at":"2026-10-14T06:55:03.258Z","reported_at":"2026-10-26T17:13:00.099705Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 10 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 0 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":"2026-10-26T14:49:39.836100Z"},"identity":{"endpoint_domains":["mahastrategies.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[{"slug":"quantum-state-validity-650460ee","name":"Quantum-state validity","proven_domain":null}],"namesake_count":1},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}