{"status":"checked","page":"https://annalist.dev/store/system76.com","full_record":"GET /v1/web/readiness?domain= (paid, $0.005)","statement":{"type":"annalist.store-check/v1","issuer":"https://annalist.dev","subject":{"domain":"system76.com"},"issued_at":"2026-10-15T00:00:00Z","valid_until":"2026-10-23T00:00:00Z","facts":{"reach":"ok","store":true,"platform":"bigcommerce","agent_checkout":"ucp","ucp_version":"2026-04-08","acp_version":null,"ucp_mcp_endpoint":"https://system76.com/api/ucp/mcp","payment_handlers":["com.google.pay"],"ships_to_countries":null,"currency":null,"return_days":null,"llms_txt":false,"a2a_agent_card":false,"mcp_server_card":false,"x402":false,"ai_agents_blocked":[],"shopping_agents_blocked":[],"changes_90d":0},"method":"census-1","evidence":{"visits":"derived/web/census/","ledger":"https://github.com/ryanroskowski/annalist-ledger"}},"signature":"F_7YmHCFO_wWTw1_a2Zt7NOSG4K06lF4NieuS-2cMLU2hbRs_AFdyjWe_UW4NrTNEnKjN1HOTFxZiJmh3t_UDQ","key_id":"187e49f200625a2f","public_key_url":"https://api.annalist.dev/.well-known/annalist-key.json","how_to_verify":"Ed25519 signature (base64url) over the RFC 8785 canonical JSON of `statement`, checked with the public key at https://api.annalist.dev/.well-known/annalist-key.json (key_id must match). Then check valid_until. It states what we measured at our last weekly visit; the visits are archived daily and each day's archive hashes are in the public ledger."}