{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:5KBE534RQBIA47ARI62RA4IGJZ","short_pith_number":"pith:5KBE534R","canonical_record":{"source":{"id":"1803.03173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-03-08T15:59:03Z","cross_cats_sorted":[],"title_canon_sha256":"0e883722c15d53a2fa4cd975c37e929d5e311d0da89ad16d7a6c741665c47a20","abstract_canon_sha256":"f796c0ee91cc2f8f869fe47a574b2da00de220771339238e34a05370fc51d8e1"},"schema_version":"1.0"},"canonical_sha256":"ea824eef9180500e7c1147b51071064e636fc54f6abfd20ced532a92d05b2dd5","source":{"kind":"arxiv","id":"1803.03173","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03173","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03173v1","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03173","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"pith_short_12","alias_value":"5KBE534RQBIA","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5KBE534RQBIA47AR","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5KBE534R","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:5KBE534RQBIA47ARI62RA4IGJZ","target":"record","payload":{"canonical_record":{"source":{"id":"1803.03173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-03-08T15:59:03Z","cross_cats_sorted":[],"title_canon_sha256":"0e883722c15d53a2fa4cd975c37e929d5e311d0da89ad16d7a6c741665c47a20","abstract_canon_sha256":"f796c0ee91cc2f8f869fe47a574b2da00de220771339238e34a05370fc51d8e1"},"schema_version":"1.0"},"canonical_sha256":"ea824eef9180500e7c1147b51071064e636fc54f6abfd20ced532a92d05b2dd5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:44.229557Z","signature_b64":"bYZfdDoiKoSB+FQwKAvmZ6rKmAmSk1UZKviR+8YKNKEwGRYMKqmpS0rytIar5ONpy0ZfkTsMSlxwg8bwdcqkDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea824eef9180500e7c1147b51071064e636fc54f6abfd20ced532a92d05b2dd5","last_reissued_at":"2026-05-18T00:21:44.229058Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:44.229058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.03173","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:21:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WtzG+hPcrK5mz2eOf0EBj85oVi2JB19mN0ACHBX0rtlxXJ4vwdqp9VeG6+R9+oLAwyp5PGSjzrbj+FgINZKSAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T11:40:36.126889Z"},"content_sha256":"41589ea54b65340cb49811a9df5affe20c1869cad2285d1cde91fd79405fce7d","schema_version":"1.0","event_id":"sha256:41589ea54b65340cb49811a9df5affe20c1869cad2285d1cde91fd79405fce7d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:5KBE534RQBIA47ARI62RA4IGJZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards the Modular Specification and Validation of Cyber-Physical Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.LO","authors_text":"Andre Metelo, Christiano Braga, Diego Brand\\~ao","submitted_at":"2018-03-08T15:59:03Z","abstract_excerpt":"Cyber-Physical Systems (CPS) are systems controlled by one or more computer-based components tightly integrated with a set of physical components, typically described as sensors and actuators, that can either be directly attached to the computer components, or at a remote location, and accessible through a network connection. The modeling and verification of such systems is a hard task and error prone that require rigorous techniques. Hybrid automata is a formalism that extends finite-state automata with continuous behavior, described by ordinary differential equations. This paper uses a rewri"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03173","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:21:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fm5JrKlBkFuSDqI7JYo2LOKeEIpe3oofn1oeyf9abXAxxcSn0gvaHE0ZLwhVGUFkun/lbwx22mV/i2EhtQqYDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T11:40:36.127342Z"},"content_sha256":"4e08dead3e40a2a56ee7deef2c19a9d91a49f7dcb11e369084fe1d599117e3f5","schema_version":"1.0","event_id":"sha256:4e08dead3e40a2a56ee7deef2c19a9d91a49f7dcb11e369084fe1d599117e3f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5KBE534RQBIA47ARI62RA4IGJZ/bundle.json","state_url":"https://pith.science/pith/5KBE534RQBIA47ARI62RA4IGJZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5KBE534RQBIA47ARI62RA4IGJZ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-07T11:40:36Z","links":{"resolver":"https://pith.science/pith/5KBE534RQBIA47ARI62RA4IGJZ","bundle":"https://pith.science/pith/5KBE534RQBIA47ARI62RA4IGJZ/bundle.json","state":"https://pith.science/pith/5KBE534RQBIA47ARI62RA4IGJZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5KBE534RQBIA47ARI62RA4IGJZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:5KBE534RQBIA47ARI62RA4IGJZ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"f796c0ee91cc2f8f869fe47a574b2da00de220771339238e34a05370fc51d8e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-03-08T15:59:03Z","title_canon_sha256":"0e883722c15d53a2fa4cd975c37e929d5e311d0da89ad16d7a6c741665c47a20"},"schema_version":"1.0","source":{"id":"1803.03173","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03173","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03173v1","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03173","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"pith_short_12","alias_value":"5KBE534RQBIA","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5KBE534RQBIA47AR","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5KBE534R","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:4e08dead3e40a2a56ee7deef2c19a9d91a49f7dcb11e369084fe1d599117e3f5","target":"graph","created_at":"2026-05-18T00:21:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Cyber-Physical Systems (CPS) are systems controlled by one or more computer-based components tightly integrated with a set of physical components, typically described as sensors and actuators, that can either be directly attached to the computer components, or at a remote location, and accessible through a network connection. The modeling and verification of such systems is a hard task and error prone that require rigorous techniques. Hybrid automata is a formalism that extends finite-state automata with continuous behavior, described by ordinary differential equations. This paper uses a rewri","authors_text":"Andre Metelo, Christiano Braga, Diego Brand\\~ao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-03-08T15:59:03Z","title":"Towards the Modular Specification and Validation of Cyber-Physical Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03173","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:41589ea54b65340cb49811a9df5affe20c1869cad2285d1cde91fd79405fce7d","target":"record","created_at":"2026-05-18T00:21:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"f796c0ee91cc2f8f869fe47a574b2da00de220771339238e34a05370fc51d8e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-03-08T15:59:03Z","title_canon_sha256":"0e883722c15d53a2fa4cd975c37e929d5e311d0da89ad16d7a6c741665c47a20"},"schema_version":"1.0","source":{"id":"1803.03173","kind":"arxiv","version":1}},"canonical_sha256":"ea824eef9180500e7c1147b51071064e636fc54f6abfd20ced532a92d05b2dd5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea824eef9180500e7c1147b51071064e636fc54f6abfd20ced532a92d05b2dd5","first_computed_at":"2026-05-18T00:21:44.229058Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:44.229058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bYZfdDoiKoSB+FQwKAvmZ6rKmAmSk1UZKviR+8YKNKEwGRYMKqmpS0rytIar5ONpy0ZfkTsMSlxwg8bwdcqkDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:44.229557Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.03173","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41589ea54b65340cb49811a9df5affe20c1869cad2285d1cde91fd79405fce7d","sha256:4e08dead3e40a2a56ee7deef2c19a9d91a49f7dcb11e369084fe1d599117e3f5"],"state_sha256":"dc3ae42747f18531fadc4d1936f18655ae2ed2fa3a17d77a45f43283cd02bd3d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p0bB+S4GRYhQhlJbLSrdptMZBEiCT4x71g6X5Kf7SzYUFsPvWgZQ0iqutVALTT7iXtn7nBPHacO0Zaj6dcsbDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T11:40:36.131947Z","bundle_sha256":"1d60f519bfae49f2a391536436ee9d770a21d44e68f3e0368dc41d8fed85757c"}}