{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q3XCTVVNM4VTUPNXQTJCOMJG2A","short_pith_number":"pith:Q3XCTVVN","canonical_record":{"source":{"id":"1901.06546","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-19T16:10:26Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"df44ad891fba1873e5311ff28554b5100dad67083d603026b34ba5fb06bb6fb1","abstract_canon_sha256":"fb815ec393c831a649b3d6dc291d8827699a7491750e9d0c72ecc930209924ef"},"schema_version":"1.0"},"canonical_sha256":"86ee29d6ad672b3a3db784d2273126d02a04be192d74ba50c7867be284e3672f","source":{"kind":"arxiv","id":"1901.06546","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06546","created_at":"2026-05-17T23:55:49Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06546v1","created_at":"2026-05-17T23:55:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06546","created_at":"2026-05-17T23:55:49Z"},{"alias_kind":"pith_short_12","alias_value":"Q3XCTVVNM4VT","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q3XCTVVNM4VTUPNX","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q3XCTVVN","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q3XCTVVNM4VTUPNXQTJCOMJG2A","target":"record","payload":{"canonical_record":{"source":{"id":"1901.06546","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-19T16:10:26Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"df44ad891fba1873e5311ff28554b5100dad67083d603026b34ba5fb06bb6fb1","abstract_canon_sha256":"fb815ec393c831a649b3d6dc291d8827699a7491750e9d0c72ecc930209924ef"},"schema_version":"1.0"},"canonical_sha256":"86ee29d6ad672b3a3db784d2273126d02a04be192d74ba50c7867be284e3672f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:49.898554Z","signature_b64":"+eB1z8UUG1mHXINGUz9CUnQPUVViqeTGk+WR2kvVjrVi+RnIWca/ojByuVh97ZyUap5HeYsZSnZEhSVFrnPABA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86ee29d6ad672b3a3db784d2273126d02a04be192d74ba50c7867be284e3672f","last_reissued_at":"2026-05-17T23:55:49.897984Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:49.897984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.06546","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":"2026-05-17T23:55:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gh59d1F2oCRep/EJtfIN17ViiBYCbX/rKU1i8t7BTUST+xgKLWjYfVskIgEUfMUQ1moeE7NoqjcgZ0H849YlBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:05:16.885579Z"},"content_sha256":"0130197921eb52b9a03b0e7a5cea6b7c8be96d177bc372b4edc19f56a179fd70","schema_version":"1.0","event_id":"sha256:0130197921eb52b9a03b0e7a5cea6b7c8be96d177bc372b4edc19f56a179fd70"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q3XCTVVNM4VTUPNXQTJCOMJG2A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An unbiased spectral line survey observation toward the low-mass star-forming region L1527","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Kento Yoshida, Nami Sakai, Satoshi Yamamoto, Shuro Takano, Takeshi Sakai, Tomoya Tokudome, Yoshimasa Watanabe, Yuri Nishimura","submitted_at":"2019-01-19T16:10:26Z","abstract_excerpt":"An unbiased spectral line survey toward a solar-type Class 0/I protostar, IRAS04368+2557, in L1527 has been carried out in the 3 mm band with the Nobeyama 45 m telescope. L1527 is known as a warm carbon-chain chemistry (WCCC) source, which harbors abundant unsaturated organic species such as C$_n$H ($n = 3,\\ 4,\\ 5,\\ldots$) in a warm and dense region near the protostar. The observation covers the frequency range from 80 to 116 GHz. A supplementary observation has also been conducted in the 70 GHz band to observe fundamental transitions of deuterated species. In total, 69 molecular species are i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06546","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":"2026-05-17T23:55:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S6rEEsV479StNWJG8oO8ecoQfVWjcUM+mBXVemey6a9P99kwE4syCvSMAEFSyN/V3KHMutEEMqQMaRJv0JupAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:05:16.886116Z"},"content_sha256":"e75522404cd986601002b7d3a1405a2f885403e3fcc00d64dde52061fed46716","schema_version":"1.0","event_id":"sha256:e75522404cd986601002b7d3a1405a2f885403e3fcc00d64dde52061fed46716"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A/bundle.json","state_url":"https://pith.science/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A/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":"2026-05-31T05:05:16Z","links":{"resolver":"https://pith.science/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A","bundle":"https://pith.science/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A/bundle.json","state":"https://pith.science/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q3XCTVVNM4VTUPNXQTJCOMJG2A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q3XCTVVNM4VTUPNXQTJCOMJG2A","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":"fb815ec393c831a649b3d6dc291d8827699a7491750e9d0c72ecc930209924ef","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-19T16:10:26Z","title_canon_sha256":"df44ad891fba1873e5311ff28554b5100dad67083d603026b34ba5fb06bb6fb1"},"schema_version":"1.0","source":{"id":"1901.06546","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06546","created_at":"2026-05-17T23:55:49Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06546v1","created_at":"2026-05-17T23:55:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06546","created_at":"2026-05-17T23:55:49Z"},{"alias_kind":"pith_short_12","alias_value":"Q3XCTVVNM4VT","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q3XCTVVNM4VTUPNX","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q3XCTVVN","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:e75522404cd986601002b7d3a1405a2f885403e3fcc00d64dde52061fed46716","target":"graph","created_at":"2026-05-17T23:55:49Z","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":"An unbiased spectral line survey toward a solar-type Class 0/I protostar, IRAS04368+2557, in L1527 has been carried out in the 3 mm band with the Nobeyama 45 m telescope. L1527 is known as a warm carbon-chain chemistry (WCCC) source, which harbors abundant unsaturated organic species such as C$_n$H ($n = 3,\\ 4,\\ 5,\\ldots$) in a warm and dense region near the protostar. The observation covers the frequency range from 80 to 116 GHz. A supplementary observation has also been conducted in the 70 GHz band to observe fundamental transitions of deuterated species. In total, 69 molecular species are i","authors_text":"Kento Yoshida, Nami Sakai, Satoshi Yamamoto, Shuro Takano, Takeshi Sakai, Tomoya Tokudome, Yoshimasa Watanabe, Yuri Nishimura","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-19T16:10:26Z","title":"An unbiased spectral line survey observation toward the low-mass star-forming region L1527"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06546","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":"sha256:0130197921eb52b9a03b0e7a5cea6b7c8be96d177bc372b4edc19f56a179fd70","target":"record","created_at":"2026-05-17T23:55:49Z","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":"fb815ec393c831a649b3d6dc291d8827699a7491750e9d0c72ecc930209924ef","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-19T16:10:26Z","title_canon_sha256":"df44ad891fba1873e5311ff28554b5100dad67083d603026b34ba5fb06bb6fb1"},"schema_version":"1.0","source":{"id":"1901.06546","kind":"arxiv","version":1}},"canonical_sha256":"86ee29d6ad672b3a3db784d2273126d02a04be192d74ba50c7867be284e3672f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86ee29d6ad672b3a3db784d2273126d02a04be192d74ba50c7867be284e3672f","first_computed_at":"2026-05-17T23:55:49.897984Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:49.897984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+eB1z8UUG1mHXINGUz9CUnQPUVViqeTGk+WR2kvVjrVi+RnIWca/ojByuVh97ZyUap5HeYsZSnZEhSVFrnPABA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:49.898554Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.06546","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0130197921eb52b9a03b0e7a5cea6b7c8be96d177bc372b4edc19f56a179fd70","sha256:e75522404cd986601002b7d3a1405a2f885403e3fcc00d64dde52061fed46716"],"state_sha256":"f619c554c6c8a7198d6a6787df9df71a9923717c5fa4c40a8a94d09359dd9289"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nBzoPkEAyC6nKnyVi5zlt2d6DIIGKOJLvoxeoKqq4sN5R89bOeqy881nuSDVKMjlAR4SsMpzfpnS/ZjjzUNgBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T05:05:16.889038Z","bundle_sha256":"5c98b0a172f256aba9760af7975fedf7deb2fe3a6e16c93fd7f18d38890042a6"}}