{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:767FXAOEHPJ663PRUXCMHH6IL3","short_pith_number":"pith:767FXAOE","canonical_record":{"source":{"id":"1804.03684","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-04-10T18:41:45Z","cross_cats_sorted":["astro-ph.SR","gr-qc"],"title_canon_sha256":"63fec75667d1e6e5117080c9d2993cefe633c95253767e87bd36a2421690d39c","abstract_canon_sha256":"b930d5b85db77e35f2541b0c559e935c0a1dca1abbdc1bac3aa36945de961656"},"schema_version":"1.0"},"canonical_sha256":"ffbe5b81c43bd3ef6df1a5c4c39fc85ee39f5a458214141b41833e2e3f0101c0","source":{"kind":"arxiv","id":"1804.03684","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03684","created_at":"2026-05-18T00:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03684v1","created_at":"2026-05-18T00:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03684","created_at":"2026-05-18T00:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"767FXAOEHPJ6","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"767FXAOEHPJ663PR","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"767FXAOE","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:767FXAOEHPJ663PRUXCMHH6IL3","target":"record","payload":{"canonical_record":{"source":{"id":"1804.03684","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-04-10T18:41:45Z","cross_cats_sorted":["astro-ph.SR","gr-qc"],"title_canon_sha256":"63fec75667d1e6e5117080c9d2993cefe633c95253767e87bd36a2421690d39c","abstract_canon_sha256":"b930d5b85db77e35f2541b0c559e935c0a1dca1abbdc1bac3aa36945de961656"},"schema_version":"1.0"},"canonical_sha256":"ffbe5b81c43bd3ef6df1a5c4c39fc85ee39f5a458214141b41833e2e3f0101c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:16.843411Z","signature_b64":"g5q1BfX7qM0iWiMx6FpuB6WfNkREcWPzVCOw7dwaBL/4457vGgXIv7IMs9UOQsQsp12QhJrBducizLQ4yhl6Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ffbe5b81c43bd3ef6df1a5c4c39fc85ee39f5a458214141b41833e2e3f0101c0","last_reissued_at":"2026-05-18T00:03:16.842888Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:16.842888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.03684","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":"2026-05-18T00:03:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z8sSOleH73XY0Eh5W98HpY0MZd6/3AXfnoIf8QJRyit3rbMe1wd+0YOT0WO8YR/G44UUB3gV/5KszJF1ZIftAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:56:58.014045Z"},"content_sha256":"eb9557305f0fa50f7926c790445ce05cf9daaca9134217bf4e215facece16cf0","schema_version":"1.0","event_id":"sha256:eb9557305f0fa50f7926c790445ce05cf9daaca9134217bf4e215facece16cf0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:767FXAOEHPJ663PRUXCMHH6IL3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Short gamma-ray burst central engines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Riccardo Ciolfi","submitted_at":"2018-04-10T18:41:45Z","abstract_excerpt":"Growing evidence connects the progenitor systems of the short-hard subclass of gamma-ray bursts (GRBs) to the merger of compact object binaries composed by two neutron stars (NSs) or by a NS and a black hole (BH). The recent observation of the binary NS (BNS) merger event GW170817 associated with GRB 170817A brought a great deal of additional information and provided further support to the above connection, even though the identification of this burst as a canonical short GRB (SGRB) remains uncertain. Decades of observational constraints and theoretical models consolidated the idea of a jet or"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03684","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":"2026-05-18T00:03:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p8O9VGjWEpuSScldfMbye+Emsqe2rY9XEAT1NaHBHAB1NpuBmMz5aO/8gyT/3LQdyVIvy0H/MDAbfdfkAiNpDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:56:58.014410Z"},"content_sha256":"ca81ef4ca7488f0f2414ef67cbdbd351dc8c735ab5d20df4220e58b897cada82","schema_version":"1.0","event_id":"sha256:ca81ef4ca7488f0f2414ef67cbdbd351dc8c735ab5d20df4220e58b897cada82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/767FXAOEHPJ663PRUXCMHH6IL3/bundle.json","state_url":"https://pith.science/pith/767FXAOEHPJ663PRUXCMHH6IL3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/767FXAOEHPJ663PRUXCMHH6IL3/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":"2026-05-29T14:56:58Z","links":{"resolver":"https://pith.science/pith/767FXAOEHPJ663PRUXCMHH6IL3","bundle":"https://pith.science/pith/767FXAOEHPJ663PRUXCMHH6IL3/bundle.json","state":"https://pith.science/pith/767FXAOEHPJ663PRUXCMHH6IL3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/767FXAOEHPJ663PRUXCMHH6IL3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:767FXAOEHPJ663PRUXCMHH6IL3","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":"b930d5b85db77e35f2541b0c559e935c0a1dca1abbdc1bac3aa36945de961656","cross_cats_sorted":["astro-ph.SR","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-04-10T18:41:45Z","title_canon_sha256":"63fec75667d1e6e5117080c9d2993cefe633c95253767e87bd36a2421690d39c"},"schema_version":"1.0","source":{"id":"1804.03684","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03684","created_at":"2026-05-18T00:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03684v1","created_at":"2026-05-18T00:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03684","created_at":"2026-05-18T00:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"767FXAOEHPJ6","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"767FXAOEHPJ663PR","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"767FXAOE","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:ca81ef4ca7488f0f2414ef67cbdbd351dc8c735ab5d20df4220e58b897cada82","target":"graph","created_at":"2026-05-18T00:03:16Z","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":"Growing evidence connects the progenitor systems of the short-hard subclass of gamma-ray bursts (GRBs) to the merger of compact object binaries composed by two neutron stars (NSs) or by a NS and a black hole (BH). The recent observation of the binary NS (BNS) merger event GW170817 associated with GRB 170817A brought a great deal of additional information and provided further support to the above connection, even though the identification of this burst as a canonical short GRB (SGRB) remains uncertain. Decades of observational constraints and theoretical models consolidated the idea of a jet or","authors_text":"Riccardo Ciolfi","cross_cats":["astro-ph.SR","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-04-10T18:41:45Z","title":"Short gamma-ray burst central engines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03684","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:eb9557305f0fa50f7926c790445ce05cf9daaca9134217bf4e215facece16cf0","target":"record","created_at":"2026-05-18T00:03:16Z","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":"b930d5b85db77e35f2541b0c559e935c0a1dca1abbdc1bac3aa36945de961656","cross_cats_sorted":["astro-ph.SR","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-04-10T18:41:45Z","title_canon_sha256":"63fec75667d1e6e5117080c9d2993cefe633c95253767e87bd36a2421690d39c"},"schema_version":"1.0","source":{"id":"1804.03684","kind":"arxiv","version":1}},"canonical_sha256":"ffbe5b81c43bd3ef6df1a5c4c39fc85ee39f5a458214141b41833e2e3f0101c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ffbe5b81c43bd3ef6df1a5c4c39fc85ee39f5a458214141b41833e2e3f0101c0","first_computed_at":"2026-05-18T00:03:16.842888Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:16.842888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"g5q1BfX7qM0iWiMx6FpuB6WfNkREcWPzVCOw7dwaBL/4457vGgXIv7IMs9UOQsQsp12QhJrBducizLQ4yhl6Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:16.843411Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.03684","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb9557305f0fa50f7926c790445ce05cf9daaca9134217bf4e215facece16cf0","sha256:ca81ef4ca7488f0f2414ef67cbdbd351dc8c735ab5d20df4220e58b897cada82"],"state_sha256":"b608841b29f4bdd63b817073f37ab9834014859bdb1a7aa7d4fe6c60826a74e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IQgbzNhhx+uFXuvrKfbmivoqG9UdXbn+hsbrSlCYFJ2g36SOCLmd14MNC0jWvUIGF0Jje7HBG3L3/XX8WDDMCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T14:56:58.016506Z","bundle_sha256":"9c591574a91040b210c1b75b1ddc3ba8f02d9403bc76a4ee37fcbbae17bb51e3"}}