{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:DXKYJBSCE7BUNCLSF5LY7Q2BA2","short_pith_number":"pith:DXKYJBSC","canonical_record":{"source":{"id":"1704.02680","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-10T00:55:57Z","cross_cats_sorted":[],"title_canon_sha256":"cadde207716f18584aee4a371c436300982b6ae9ff7b4303915eb27e35b73d2c","abstract_canon_sha256":"c0fca69b5a2762e4d42b97c0ca6d54a4e0ae489b253d235ad78ed71631749d16"},"schema_version":"1.0"},"canonical_sha256":"1dd584864227c34689722f578fc341068c222f5008d81c10d2244cc09bacd058","source":{"kind":"arxiv","id":"1704.02680","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02680","created_at":"2026-05-18T00:46:44Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02680v1","created_at":"2026-05-18T00:46:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02680","created_at":"2026-05-18T00:46:44Z"},{"alias_kind":"pith_short_12","alias_value":"DXKYJBSCE7BU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DXKYJBSCE7BUNCLS","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DXKYJBSC","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:DXKYJBSCE7BUNCLSF5LY7Q2BA2","target":"record","payload":{"canonical_record":{"source":{"id":"1704.02680","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-10T00:55:57Z","cross_cats_sorted":[],"title_canon_sha256":"cadde207716f18584aee4a371c436300982b6ae9ff7b4303915eb27e35b73d2c","abstract_canon_sha256":"c0fca69b5a2762e4d42b97c0ca6d54a4e0ae489b253d235ad78ed71631749d16"},"schema_version":"1.0"},"canonical_sha256":"1dd584864227c34689722f578fc341068c222f5008d81c10d2244cc09bacd058","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:44.730440Z","signature_b64":"c0V6yTB8xH32mKMUDo5Eq3kNZqUizpz7R5u6mqKLwpzNlQT6Wayn5qodXCVANhGATmakNhmoxDrCUaA9ZbhdDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1dd584864227c34689722f578fc341068c222f5008d81c10d2244cc09bacd058","last_reissued_at":"2026-05-18T00:46:44.729742Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:44.729742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.02680","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":"2026-05-18T00:46:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TwwJ79KzY0D4O+B6XFyO+bPpYW5knGCxg2JEesF3IASbRq4JOILVsZErhFRlioqCh9ac8/+xb+syCibHnN5KCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:16:36.364382Z"},"content_sha256":"c66a8d899e67063f28137451caabd5480da4879ed8ebe5196447d0fa2d49ef7a","schema_version":"1.0","event_id":"sha256:c66a8d899e67063f28137451caabd5480da4879ed8ebe5196447d0fa2d49ef7a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:DXKYJBSCE7BUNCLSF5LY7Q2BA2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Submillimeter Array CO(2-1) Imaging of the NGC 6946 Giant Molecular Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hsi-An Pan, Kazushi Sakamoto, Ya-Lin Wu","submitted_at":"2017-04-10T00:55:57Z","abstract_excerpt":"We present a CO(2-1) mosaic map of the spiral galaxy NGC 6946 by combining data from the Submillimeter Array and the IRAM 30 m telescope. We identify 390 giant molecular clouds (GMCs) from the nucleus to 4.5 kpc in the disk. GMCs in the inner 1 kpc are generally more luminous and turbulent, some of which have luminosities >10^6 K km/s pc^2 and velocity dispersions >10 km/s. Large-scale bar-driven dynamics likely regulate GMC properties in the nuclear region. Similar to the Milky Way and other disk galaxies, GMC mass function of NGC 6946 has a shallower slope (index>-2) in the inner region, and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02680","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":"2026-05-18T00:46:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RDmP58I6gGk9G/J8gJQSqJXNQbF1cKlwwVtgzYndwgxVePByKyN/GuniGQWOk9aUO6jjMCTi+2frBjjw1VSZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:16:36.365032Z"},"content_sha256":"03b7c2db54a5aa94a4581ce2929e087d12f10dbab7daf4cec55afc67910c5a2c","schema_version":"1.0","event_id":"sha256:03b7c2db54a5aa94a4581ce2929e087d12f10dbab7daf4cec55afc67910c5a2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2/bundle.json","state_url":"https://pith.science/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2/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":"2026-05-27T19:16:36Z","links":{"resolver":"https://pith.science/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2","bundle":"https://pith.science/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2/bundle.json","state":"https://pith.science/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DXKYJBSCE7BUNCLSF5LY7Q2BA2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DXKYJBSCE7BUNCLSF5LY7Q2BA2","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":"c0fca69b5a2762e4d42b97c0ca6d54a4e0ae489b253d235ad78ed71631749d16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-10T00:55:57Z","title_canon_sha256":"cadde207716f18584aee4a371c436300982b6ae9ff7b4303915eb27e35b73d2c"},"schema_version":"1.0","source":{"id":"1704.02680","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02680","created_at":"2026-05-18T00:46:44Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02680v1","created_at":"2026-05-18T00:46:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02680","created_at":"2026-05-18T00:46:44Z"},{"alias_kind":"pith_short_12","alias_value":"DXKYJBSCE7BU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DXKYJBSCE7BUNCLS","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DXKYJBSC","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:03b7c2db54a5aa94a4581ce2929e087d12f10dbab7daf4cec55afc67910c5a2c","target":"graph","created_at":"2026-05-18T00:46:44Z","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":"We present a CO(2-1) mosaic map of the spiral galaxy NGC 6946 by combining data from the Submillimeter Array and the IRAM 30 m telescope. We identify 390 giant molecular clouds (GMCs) from the nucleus to 4.5 kpc in the disk. GMCs in the inner 1 kpc are generally more luminous and turbulent, some of which have luminosities >10^6 K km/s pc^2 and velocity dispersions >10 km/s. Large-scale bar-driven dynamics likely regulate GMC properties in the nuclear region. Similar to the Milky Way and other disk galaxies, GMC mass function of NGC 6946 has a shallower slope (index>-2) in the inner region, and","authors_text":"Hsi-An Pan, Kazushi Sakamoto, Ya-Lin Wu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-10T00:55:57Z","title":"Submillimeter Array CO(2-1) Imaging of the NGC 6946 Giant Molecular Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02680","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:c66a8d899e67063f28137451caabd5480da4879ed8ebe5196447d0fa2d49ef7a","target":"record","created_at":"2026-05-18T00:46:44Z","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":"c0fca69b5a2762e4d42b97c0ca6d54a4e0ae489b253d235ad78ed71631749d16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-10T00:55:57Z","title_canon_sha256":"cadde207716f18584aee4a371c436300982b6ae9ff7b4303915eb27e35b73d2c"},"schema_version":"1.0","source":{"id":"1704.02680","kind":"arxiv","version":1}},"canonical_sha256":"1dd584864227c34689722f578fc341068c222f5008d81c10d2244cc09bacd058","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1dd584864227c34689722f578fc341068c222f5008d81c10d2244cc09bacd058","first_computed_at":"2026-05-18T00:46:44.729742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:44.729742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c0V6yTB8xH32mKMUDo5Eq3kNZqUizpz7R5u6mqKLwpzNlQT6Wayn5qodXCVANhGATmakNhmoxDrCUaA9ZbhdDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:44.730440Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.02680","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c66a8d899e67063f28137451caabd5480da4879ed8ebe5196447d0fa2d49ef7a","sha256:03b7c2db54a5aa94a4581ce2929e087d12f10dbab7daf4cec55afc67910c5a2c"],"state_sha256":"87c7d5c5b6b49ff02979aa8cb3aef738b0ac5694edaac28946bc678eebc3418e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GpmZnEk9wnoyb9e9+9QxMwqp228Ri6hfJ3tXqaAwLYXHMLMyNFW09SFpkGeO5DQbbt+h68BzuvfW6zjawKY8AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:16:36.368469Z","bundle_sha256":"597a2ceee06ae140d4c24da596f39ba51e342d4a5bdbe0bbfe17fc716dd0e619"}}