{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GKZZLLDW3HTASE7FX7DKJE2S73","short_pith_number":"pith:GKZZLLDW","canonical_record":{"source":{"id":"1703.10260","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-29T23:00:56Z","cross_cats_sorted":[],"title_canon_sha256":"eb002583c3bc747b1ee574435d0a1eded7c6fcc82037d027a67eea3890b969ec","abstract_canon_sha256":"54b7360e9273db564c2a85f14b7e12e31c0a531f18168fb6196f2480c53ec5f8"},"schema_version":"1.0"},"canonical_sha256":"32b395ac76d9e60913e5bfc6a49352fec6c4e93656e04ef998ec14b8c0a70757","source":{"kind":"arxiv","id":"1703.10260","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10260","created_at":"2026-05-18T00:45:38Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10260v1","created_at":"2026-05-18T00:45:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10260","created_at":"2026-05-18T00:45:38Z"},{"alias_kind":"pith_short_12","alias_value":"GKZZLLDW3HTA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GKZZLLDW3HTASE7F","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GKZZLLDW","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GKZZLLDW3HTASE7FX7DKJE2S73","target":"record","payload":{"canonical_record":{"source":{"id":"1703.10260","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-29T23:00:56Z","cross_cats_sorted":[],"title_canon_sha256":"eb002583c3bc747b1ee574435d0a1eded7c6fcc82037d027a67eea3890b969ec","abstract_canon_sha256":"54b7360e9273db564c2a85f14b7e12e31c0a531f18168fb6196f2480c53ec5f8"},"schema_version":"1.0"},"canonical_sha256":"32b395ac76d9e60913e5bfc6a49352fec6c4e93656e04ef998ec14b8c0a70757","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:38.851858Z","signature_b64":"MOTx0T39FoVy5UAgb20c2K4GnmZTHcD+wa8j1/cHe+R0digLpt5lfNPETOK3DXIVNfgXZbnJOliEMK+kP81iDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32b395ac76d9e60913e5bfc6a49352fec6c4e93656e04ef998ec14b8c0a70757","last_reissued_at":"2026-05-18T00:45:38.851113Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:38.851113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.10260","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":"2026-05-18T00:45:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G7swEVQ5cIA9SLmqChAbSHetFtrMZYzXl9A7AiyN3CIuYRjEtGnw2n6jVST1U3ChMmCBcXWQrPnW8iEOEQE7Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:52:21.955730Z"},"content_sha256":"42b2269b1fbba2e318b789a462cfb656fb0a24478380d8e6a4ee6c0f14ad4955","schema_version":"1.0","event_id":"sha256:42b2269b1fbba2e318b789a462cfb656fb0a24478380d8e6a4ee6c0f14ad4955"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GKZZLLDW3HTASE7FX7DKJE2S73","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamical timescale of precollapse evolution inferred from chemical distribution in the Taurus Molecular Cloud-1 (TMC-1) filament","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jeong-Eun Lee, Neal J. Evans II, Tyler L. Bourke, Yunhee Choi","submitted_at":"2017-03-29T23:00:56Z","abstract_excerpt":"We present observations and analysis of the low-mass star-forming region, Taurus Molecular Cloud-1 (TMC-1). CS ($J$=2-1)/N$_2$H$^+$ ($J$=1-0) and C$^{17}$O ($J$=2-1)/C$^{18}$O ($J$=2-1) were observed with FCRAO (Five College Radio Astronomy Observatory) and SRAO (Seoul Radio Astronomy Observatory), respectively. In addition, Spitzer infrared data and 1.2 mm continuum data observed with MAMBO (Max-Planck Millimetre Bolometer) are used. We also perform chemical modeling to investigate the relative molecular distributions of the TMC-1 filament. Based on Spitzer observations, there is no young ste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10260","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":"2026-05-18T00:45:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Raafj8DijUjAYEqYQwhks/ak286b5trr/qzh3o1Pc8N+XY223/+aP5qHNevYWejTS8/xDgUaVOX8gDtvwWmgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:52:21.956432Z"},"content_sha256":"5a3caa6de1ac4e08bf3e6d9a9de743d6e93a901a25a7ee7958d3730f606f8cfb","schema_version":"1.0","event_id":"sha256:5a3caa6de1ac4e08bf3e6d9a9de743d6e93a901a25a7ee7958d3730f606f8cfb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GKZZLLDW3HTASE7FX7DKJE2S73/bundle.json","state_url":"https://pith.science/pith/GKZZLLDW3HTASE7FX7DKJE2S73/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GKZZLLDW3HTASE7FX7DKJE2S73/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":"2026-05-25T16:52:21Z","links":{"resolver":"https://pith.science/pith/GKZZLLDW3HTASE7FX7DKJE2S73","bundle":"https://pith.science/pith/GKZZLLDW3HTASE7FX7DKJE2S73/bundle.json","state":"https://pith.science/pith/GKZZLLDW3HTASE7FX7DKJE2S73/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GKZZLLDW3HTASE7FX7DKJE2S73/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GKZZLLDW3HTASE7FX7DKJE2S73","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":"54b7360e9273db564c2a85f14b7e12e31c0a531f18168fb6196f2480c53ec5f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-29T23:00:56Z","title_canon_sha256":"eb002583c3bc747b1ee574435d0a1eded7c6fcc82037d027a67eea3890b969ec"},"schema_version":"1.0","source":{"id":"1703.10260","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10260","created_at":"2026-05-18T00:45:38Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10260v1","created_at":"2026-05-18T00:45:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10260","created_at":"2026-05-18T00:45:38Z"},{"alias_kind":"pith_short_12","alias_value":"GKZZLLDW3HTA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GKZZLLDW3HTASE7F","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GKZZLLDW","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:5a3caa6de1ac4e08bf3e6d9a9de743d6e93a901a25a7ee7958d3730f606f8cfb","target":"graph","created_at":"2026-05-18T00:45:38Z","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 observations and analysis of the low-mass star-forming region, Taurus Molecular Cloud-1 (TMC-1). CS ($J$=2-1)/N$_2$H$^+$ ($J$=1-0) and C$^{17}$O ($J$=2-1)/C$^{18}$O ($J$=2-1) were observed with FCRAO (Five College Radio Astronomy Observatory) and SRAO (Seoul Radio Astronomy Observatory), respectively. In addition, Spitzer infrared data and 1.2 mm continuum data observed with MAMBO (Max-Planck Millimetre Bolometer) are used. We also perform chemical modeling to investigate the relative molecular distributions of the TMC-1 filament. Based on Spitzer observations, there is no young ste","authors_text":"Jeong-Eun Lee, Neal J. Evans II, Tyler L. Bourke, Yunhee Choi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-29T23:00:56Z","title":"Dynamical timescale of precollapse evolution inferred from chemical distribution in the Taurus Molecular Cloud-1 (TMC-1) filament"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10260","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":"sha256:42b2269b1fbba2e318b789a462cfb656fb0a24478380d8e6a4ee6c0f14ad4955","target":"record","created_at":"2026-05-18T00:45:38Z","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":"54b7360e9273db564c2a85f14b7e12e31c0a531f18168fb6196f2480c53ec5f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-29T23:00:56Z","title_canon_sha256":"eb002583c3bc747b1ee574435d0a1eded7c6fcc82037d027a67eea3890b969ec"},"schema_version":"1.0","source":{"id":"1703.10260","kind":"arxiv","version":1}},"canonical_sha256":"32b395ac76d9e60913e5bfc6a49352fec6c4e93656e04ef998ec14b8c0a70757","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32b395ac76d9e60913e5bfc6a49352fec6c4e93656e04ef998ec14b8c0a70757","first_computed_at":"2026-05-18T00:45:38.851113Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:38.851113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MOTx0T39FoVy5UAgb20c2K4GnmZTHcD+wa8j1/cHe+R0digLpt5lfNPETOK3DXIVNfgXZbnJOliEMK+kP81iDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:38.851858Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.10260","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42b2269b1fbba2e318b789a462cfb656fb0a24478380d8e6a4ee6c0f14ad4955","sha256:5a3caa6de1ac4e08bf3e6d9a9de743d6e93a901a25a7ee7958d3730f606f8cfb"],"state_sha256":"682ea3936d7c5cbf21b38f1ad1889ec370471692bee73db780d0c0415fd72b7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ahaCCZR/3hdwsrsTBnM4UF5rmh7De82TVtbHS+kWQjn7WiFhho+dZrbGepiOIqEsG91FEB4+qRU4Bod9pgc7AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:52:21.960495Z","bundle_sha256":"1e61c7a27444b3966ab8d59c61dcdcfcc352e61523b3230c716c537c755193f5"}}