{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:3Y7WBTR7NLDB2WIYVRV7MZKSUZ","short_pith_number":"pith:3Y7WBTR7","canonical_record":{"source":{"id":"1805.02655","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"880de1fd7cdbc56344c1018435095aa5174863b8c21cd4b026c83522186d7acd","abstract_canon_sha256":"496ebec9483759be22881dec8ca243c538c60bd3a4c01bc94c6e313d13b17967"},"schema_version":"1.0"},"canonical_sha256":"de3f60ce3f6ac61d5918ac6bf66552a6534efc2ffd3690337412e2480a561ef4","source":{"kind":"arxiv","id":"1805.02655","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02655","created_at":"2026-05-18T00:15:54Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02655v1","created_at":"2026-05-18T00:15:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02655","created_at":"2026-05-18T00:15:54Z"},{"alias_kind":"pith_short_12","alias_value":"3Y7WBTR7NLDB","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3Y7WBTR7NLDB2WIY","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3Y7WBTR7","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:3Y7WBTR7NLDB2WIYVRV7MZKSUZ","target":"record","payload":{"canonical_record":{"source":{"id":"1805.02655","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"880de1fd7cdbc56344c1018435095aa5174863b8c21cd4b026c83522186d7acd","abstract_canon_sha256":"496ebec9483759be22881dec8ca243c538c60bd3a4c01bc94c6e313d13b17967"},"schema_version":"1.0"},"canonical_sha256":"de3f60ce3f6ac61d5918ac6bf66552a6534efc2ffd3690337412e2480a561ef4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:54.115067Z","signature_b64":"a2hIQNBLgwzGSPn9Iu9exdwZWebMiq+3+HAT47cfLhP6sgM5hlxcNRUdDcBQf1NmRCWOSe13HRLXzNo/C8XGCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de3f60ce3f6ac61d5918ac6bf66552a6534efc2ffd3690337412e2480a561ef4","last_reissued_at":"2026-05-18T00:15:54.114372Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:54.114372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.02655","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":"2026-05-18T00:15:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"23bFO6rdYlNBlHxYPgv2l3apjYfVVDYOAk2l1gxv9MwkKdDlT89nCwvAJOKbgcHolFdO9D2eYH6e11TPgqG1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:39:15.222437Z"},"content_sha256":"324866dc8101f494af5c8795bcaf37010a1bd2edbc0984db8dd3b5fd24a0b011","schema_version":"1.0","event_id":"sha256:324866dc8101f494af5c8795bcaf37010a1bd2edbc0984db8dd3b5fd24a0b011"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:3Y7WBTR7NLDB2WIYVRV7MZKSUZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the physical mechanisms governing the cloud lifecycle in the Central Molecular Zone of the Milky Way","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) ANU, (3) LJMU), J. M. D. Kruijssen (1), M. R. Krumholz (2), S. M. R. Jeffreson (1), S. N. Longmore (3) ((1) Heidelberg","submitted_at":"2018-05-07T18:00:00Z","abstract_excerpt":"We apply an analytic theory for environmentally-dependent molecular cloud lifetimes to the Central Molecular Zone of the Milky Way. Within this theory, the cloud lifetime in the Galactic centre is obtained by combining the time-scales for gravitational instability, galactic shear, epicyclic perturbations and cloud-cloud collisions. We find that at galactocentric radii $\\sim 45$-$120$ pc, corresponding to the location of the '100-pc stream', cloud evolution is primarily dominated by gravitational collapse, with median cloud lifetimes between 1.4 and 3.9 Myr. At all other galactocentric radii, g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02655","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":"2026-05-18T00:15:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bVkvbR9OEEMXdD21Vzfe9P+msYsg17p/YZBLma0ld69z8TFw7Z8lB+Ymil8W0FpUNY9nA4ZBb0YBwfoqrSRtDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:39:15.222809Z"},"content_sha256":"9b10232edba6e07adda92e8451835e090d67b9b335991bbe7729f905fb61effb","schema_version":"1.0","event_id":"sha256:9b10232edba6e07adda92e8451835e090d67b9b335991bbe7729f905fb61effb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ/bundle.json","state_url":"https://pith.science/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ/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":"2026-05-26T01:39:15Z","links":{"resolver":"https://pith.science/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ","bundle":"https://pith.science/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ/bundle.json","state":"https://pith.science/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3Y7WBTR7NLDB2WIYVRV7MZKSUZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3Y7WBTR7NLDB2WIYVRV7MZKSUZ","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":"496ebec9483759be22881dec8ca243c538c60bd3a4c01bc94c6e313d13b17967","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T18:00:00Z","title_canon_sha256":"880de1fd7cdbc56344c1018435095aa5174863b8c21cd4b026c83522186d7acd"},"schema_version":"1.0","source":{"id":"1805.02655","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02655","created_at":"2026-05-18T00:15:54Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02655v1","created_at":"2026-05-18T00:15:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02655","created_at":"2026-05-18T00:15:54Z"},{"alias_kind":"pith_short_12","alias_value":"3Y7WBTR7NLDB","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3Y7WBTR7NLDB2WIY","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3Y7WBTR7","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:9b10232edba6e07adda92e8451835e090d67b9b335991bbe7729f905fb61effb","target":"graph","created_at":"2026-05-18T00:15:54Z","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":"We apply an analytic theory for environmentally-dependent molecular cloud lifetimes to the Central Molecular Zone of the Milky Way. Within this theory, the cloud lifetime in the Galactic centre is obtained by combining the time-scales for gravitational instability, galactic shear, epicyclic perturbations and cloud-cloud collisions. We find that at galactocentric radii $\\sim 45$-$120$ pc, corresponding to the location of the '100-pc stream', cloud evolution is primarily dominated by gravitational collapse, with median cloud lifetimes between 1.4 and 3.9 Myr. At all other galactocentric radii, g","authors_text":"(2) ANU, (3) LJMU), J. M. D. Kruijssen (1), M. R. Krumholz (2), S. M. R. Jeffreson (1), S. N. Longmore (3) ((1) Heidelberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T18:00:00Z","title":"On the physical mechanisms governing the cloud lifecycle in the Central Molecular Zone of the Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02655","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":"sha256:324866dc8101f494af5c8795bcaf37010a1bd2edbc0984db8dd3b5fd24a0b011","target":"record","created_at":"2026-05-18T00:15:54Z","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":"496ebec9483759be22881dec8ca243c538c60bd3a4c01bc94c6e313d13b17967","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T18:00:00Z","title_canon_sha256":"880de1fd7cdbc56344c1018435095aa5174863b8c21cd4b026c83522186d7acd"},"schema_version":"1.0","source":{"id":"1805.02655","kind":"arxiv","version":1}},"canonical_sha256":"de3f60ce3f6ac61d5918ac6bf66552a6534efc2ffd3690337412e2480a561ef4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de3f60ce3f6ac61d5918ac6bf66552a6534efc2ffd3690337412e2480a561ef4","first_computed_at":"2026-05-18T00:15:54.114372Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:54.114372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a2hIQNBLgwzGSPn9Iu9exdwZWebMiq+3+HAT47cfLhP6sgM5hlxcNRUdDcBQf1NmRCWOSe13HRLXzNo/C8XGCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:54.115067Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.02655","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:324866dc8101f494af5c8795bcaf37010a1bd2edbc0984db8dd3b5fd24a0b011","sha256:9b10232edba6e07adda92e8451835e090d67b9b335991bbe7729f905fb61effb"],"state_sha256":"36cf0a5a6ec65e822533aa5758e8ee25b4190e545ea96a828d6398a658bc9b83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S1vTHUnGWYLA94YnGG8+fEA2AJDCO1lUNzxipVkTLL1Hdlbg00YYzO2SeXRWpb4tHVOBGsrSPvZ+hDm7cYK7Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T01:39:15.226237Z","bundle_sha256":"a0839e8c7aa535ad9e2a7d6ce2c5550de0633c964e8479d6c77445fdab9b3745"}}