{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:JEHKY4PVAQ5B5QRVPZYSHZGU54","short_pith_number":"pith:JEHKY4PV","canonical_record":{"source":{"id":"1806.04880","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.SE","submitted_at":"2018-06-13T08:01:20Z","cross_cats_sorted":[],"title_canon_sha256":"29195d63e00532800a3e8ed40ee643bcb4ee475f28bebeae5622a7d60f76931e","abstract_canon_sha256":"4ea1c65e23a81d9f21ae859a3759dfd7f4b04ae8555a7be8409c7eaa25572deb"},"schema_version":"1.0"},"canonical_sha256":"490eac71f5043a1ec2357e7123e4d4ef3334d4aff35a2eb340ced94c0d8e62c1","source":{"kind":"arxiv","id":"1806.04880","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.04880","created_at":"2026-05-18T00:13:20Z"},{"alias_kind":"arxiv_version","alias_value":"1806.04880v1","created_at":"2026-05-18T00:13:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.04880","created_at":"2026-05-18T00:13:20Z"},{"alias_kind":"pith_short_12","alias_value":"JEHKY4PVAQ5B","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JEHKY4PVAQ5B5QRV","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JEHKY4PV","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:JEHKY4PVAQ5B5QRVPZYSHZGU54","target":"record","payload":{"canonical_record":{"source":{"id":"1806.04880","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.SE","submitted_at":"2018-06-13T08:01:20Z","cross_cats_sorted":[],"title_canon_sha256":"29195d63e00532800a3e8ed40ee643bcb4ee475f28bebeae5622a7d60f76931e","abstract_canon_sha256":"4ea1c65e23a81d9f21ae859a3759dfd7f4b04ae8555a7be8409c7eaa25572deb"},"schema_version":"1.0"},"canonical_sha256":"490eac71f5043a1ec2357e7123e4d4ef3334d4aff35a2eb340ced94c0d8e62c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:20.618956Z","signature_b64":"21Ff8chaXqbImLRQYBLugiblbGkQqwhEDIaMoO50DtV6woYBNDEr1uUpmtKfSctmpX9FM0d2WrTPVMWLhDhNDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"490eac71f5043a1ec2357e7123e4d4ef3334d4aff35a2eb340ced94c0d8e62c1","last_reissued_at":"2026-05-18T00:13:20.618446Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:20.618446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.04880","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":"2026-05-18T00:13:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"afL7Izz761a4G04LGKZpi+gpeKgK+ZKyTeAm36tL9QM+bFZ5CXlD1Y369NzyC++IMgt5YUArejtl7iosOCNCBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:49:24.359455Z"},"content_sha256":"34ac5c70761c866d0eff7bab392243fa5b34d8bf5a8d535aaf71ecc9cd06f263","schema_version":"1.0","event_id":"sha256:34ac5c70761c866d0eff7bab392243fa5b34d8bf5a8d535aaf71ecc9cd06f263"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:JEHKY4PVAQ5B5QRVPZYSHZGU54","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Model-Based Safety-Cases for Software-Intensive Systems","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Bernhard Sch\\\"atz, Jan Philipps, Peter Braun, Stefan Wagner","submitted_at":"2018-06-13T08:01:20Z","abstract_excerpt":"Safety cases become increasingly important for software certification. Models play a crucial role in building and combining information for the safety case. This position paper sketches an ideal model-based safety case with defect hypotheses and failure characterisations. From this, open research issues are derived."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.04880","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":"2026-05-18T00:13:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hYTlc5ZfbtdfySiafbuvCQhzaAs0nUQdA02mC4ixsoSGd1ak9bpVflG/7Nm3FhfQ7cUA5cXb61XwPjKl8Xh3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:49:24.359799Z"},"content_sha256":"6ef498fb1f08ddc8325d7505ac0e963eb456497b2dbc0f5b3d9d3887be675812","schema_version":"1.0","event_id":"sha256:6ef498fb1f08ddc8325d7505ac0e963eb456497b2dbc0f5b3d9d3887be675812"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54/bundle.json","state_url":"https://pith.science/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54/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":"2026-06-03T20:49:24Z","links":{"resolver":"https://pith.science/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54","bundle":"https://pith.science/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54/bundle.json","state":"https://pith.science/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JEHKY4PVAQ5B5QRVPZYSHZGU54/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JEHKY4PVAQ5B5QRVPZYSHZGU54","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":"4ea1c65e23a81d9f21ae859a3759dfd7f4b04ae8555a7be8409c7eaa25572deb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.SE","submitted_at":"2018-06-13T08:01:20Z","title_canon_sha256":"29195d63e00532800a3e8ed40ee643bcb4ee475f28bebeae5622a7d60f76931e"},"schema_version":"1.0","source":{"id":"1806.04880","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.04880","created_at":"2026-05-18T00:13:20Z"},{"alias_kind":"arxiv_version","alias_value":"1806.04880v1","created_at":"2026-05-18T00:13:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.04880","created_at":"2026-05-18T00:13:20Z"},{"alias_kind":"pith_short_12","alias_value":"JEHKY4PVAQ5B","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JEHKY4PVAQ5B5QRV","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JEHKY4PV","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:6ef498fb1f08ddc8325d7505ac0e963eb456497b2dbc0f5b3d9d3887be675812","target":"graph","created_at":"2026-05-18T00:13:20Z","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":"Safety cases become increasingly important for software certification. Models play a crucial role in building and combining information for the safety case. This position paper sketches an ideal model-based safety case with defect hypotheses and failure characterisations. From this, open research issues are derived.","authors_text":"Bernhard Sch\\\"atz, Jan Philipps, Peter Braun, Stefan Wagner","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.SE","submitted_at":"2018-06-13T08:01:20Z","title":"Model-Based Safety-Cases for Software-Intensive Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.04880","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":"sha256:34ac5c70761c866d0eff7bab392243fa5b34d8bf5a8d535aaf71ecc9cd06f263","target":"record","created_at":"2026-05-18T00:13:20Z","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":"4ea1c65e23a81d9f21ae859a3759dfd7f4b04ae8555a7be8409c7eaa25572deb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.SE","submitted_at":"2018-06-13T08:01:20Z","title_canon_sha256":"29195d63e00532800a3e8ed40ee643bcb4ee475f28bebeae5622a7d60f76931e"},"schema_version":"1.0","source":{"id":"1806.04880","kind":"arxiv","version":1}},"canonical_sha256":"490eac71f5043a1ec2357e7123e4d4ef3334d4aff35a2eb340ced94c0d8e62c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"490eac71f5043a1ec2357e7123e4d4ef3334d4aff35a2eb340ced94c0d8e62c1","first_computed_at":"2026-05-18T00:13:20.618446Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:20.618446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"21Ff8chaXqbImLRQYBLugiblbGkQqwhEDIaMoO50DtV6woYBNDEr1uUpmtKfSctmpX9FM0d2WrTPVMWLhDhNDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:20.618956Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.04880","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34ac5c70761c866d0eff7bab392243fa5b34d8bf5a8d535aaf71ecc9cd06f263","sha256:6ef498fb1f08ddc8325d7505ac0e963eb456497b2dbc0f5b3d9d3887be675812"],"state_sha256":"c57a8ee4e47aa4eb20c8033d93e723f46cf837b9097e0123f0ffbb2658f4c184"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qMmHgQpSSVRVp1pwEQ2gctCU5GPYFFyVCsoFh941npy3W/52O1xSn0IVd5PTpgF+EKL3xa08UNvBqxRVx7zwDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:49:24.361960Z","bundle_sha256":"d66316895a1439c6a8e7fe6c1d7a76d3ca6da82aaf1b5a65a88fb87350c4c3c8"}}