{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BPH42V6IJ7X4XNEDIDHNOEPXXC","short_pith_number":"pith:BPH42V6I","canonical_record":{"source":{"id":"1807.03741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-10T16:32:58Z","cross_cats_sorted":[],"title_canon_sha256":"964fa0c96d725a464abe872b05c3fa3567cc24ba44ae60297bb7a2fda77f9dd8","abstract_canon_sha256":"a8d9382a8a174662922b70fa3e34c4989be6eb972136ea8dd4adcffdebc309c4"},"schema_version":"1.0"},"canonical_sha256":"0bcfcd57c84fefcbb48340ced711f7b8941659f28ac19c7a190f6e954038eb00","source":{"kind":"arxiv","id":"1807.03741","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03741","created_at":"2026-05-18T00:05:57Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03741v1","created_at":"2026-05-18T00:05:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03741","created_at":"2026-05-18T00:05:57Z"},{"alias_kind":"pith_short_12","alias_value":"BPH42V6IJ7X4","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BPH42V6IJ7X4XNED","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BPH42V6I","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BPH42V6IJ7X4XNEDIDHNOEPXXC","target":"record","payload":{"canonical_record":{"source":{"id":"1807.03741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-10T16:32:58Z","cross_cats_sorted":[],"title_canon_sha256":"964fa0c96d725a464abe872b05c3fa3567cc24ba44ae60297bb7a2fda77f9dd8","abstract_canon_sha256":"a8d9382a8a174662922b70fa3e34c4989be6eb972136ea8dd4adcffdebc309c4"},"schema_version":"1.0"},"canonical_sha256":"0bcfcd57c84fefcbb48340ced711f7b8941659f28ac19c7a190f6e954038eb00","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:57.136516Z","signature_b64":"Ney+PHmvBY1VoZwSilfRxfGk/+Ocfh9P7ATvm/PYU6ou1PCTgYhHekzZV3xLYAmHNBuxk7oM/xlCBTSnHN+IAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0bcfcd57c84fefcbb48340ced711f7b8941659f28ac19c7a190f6e954038eb00","last_reissued_at":"2026-05-18T00:05:57.136031Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:57.136031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.03741","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":"2026-05-18T00:05:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HVAVf5fhcdSI4GiI6XJhY3cOxZs2sn/JNVOwdQGQtdywS4iIhZrn1qVYzNcfr3nVEXBTopw2Nm+bWqXvffK9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T19:40:40.579432Z"},"content_sha256":"f65567dad925fcbf0b089b953da55726d6f01b5a580975375cae0fc8d72b8cbe","schema_version":"1.0","event_id":"sha256:f65567dad925fcbf0b089b953da55726d6f01b5a580975375cae0fc8d72b8cbe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BPH42V6IJ7X4XNEDIDHNOEPXXC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mapping the 13CO/C18O abundance ratio in the massive star forming region G29.96-0.02","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"M. B. Areal, M. E. Ortega, S. Paron","submitted_at":"2018-07-10T16:32:58Z","abstract_excerpt":"Estimating molecular abundances ratios from the direct measurement of the emission of the molecules towards a variety of interstellar environments is indeed very useful to advance in our understanding of the chemical evolution of the Galaxy, and hence of the physical processes related to the chemistry. It is necessary to increase the sample of molecular clouds, located at different distances, in which the behavior of molecular abundance ratios, such as the 13CO/C18O ratio (X), is studied in detail. We selected the well-studied high-mass star-forming region G29.96-0.02, located at a distance of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03741","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":"2026-05-18T00:05:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lbFH2Of8SHXxuuyc8TUtEwpu4Pg2NfHvKGoCnElAJVZC5IP4Krqrv4dZ9iIsiQNaECrEeQ0XcLewR6odVfxsDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T19:40:40.579773Z"},"content_sha256":"8ca56cef3f62d384497a3c652e4d5621b3e482f3d784c5af00e859725b9e268b","schema_version":"1.0","event_id":"sha256:8ca56cef3f62d384497a3c652e4d5621b3e482f3d784c5af00e859725b9e268b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC/bundle.json","state_url":"https://pith.science/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC/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":"2026-06-27T19:40:40Z","links":{"resolver":"https://pith.science/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC","bundle":"https://pith.science/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC/bundle.json","state":"https://pith.science/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BPH42V6IJ7X4XNEDIDHNOEPXXC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BPH42V6IJ7X4XNEDIDHNOEPXXC","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":"a8d9382a8a174662922b70fa3e34c4989be6eb972136ea8dd4adcffdebc309c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-10T16:32:58Z","title_canon_sha256":"964fa0c96d725a464abe872b05c3fa3567cc24ba44ae60297bb7a2fda77f9dd8"},"schema_version":"1.0","source":{"id":"1807.03741","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03741","created_at":"2026-05-18T00:05:57Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03741v1","created_at":"2026-05-18T00:05:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03741","created_at":"2026-05-18T00:05:57Z"},{"alias_kind":"pith_short_12","alias_value":"BPH42V6IJ7X4","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BPH42V6IJ7X4XNED","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BPH42V6I","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:8ca56cef3f62d384497a3c652e4d5621b3e482f3d784c5af00e859725b9e268b","target":"graph","created_at":"2026-05-18T00:05:57Z","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":"Estimating molecular abundances ratios from the direct measurement of the emission of the molecules towards a variety of interstellar environments is indeed very useful to advance in our understanding of the chemical evolution of the Galaxy, and hence of the physical processes related to the chemistry. It is necessary to increase the sample of molecular clouds, located at different distances, in which the behavior of molecular abundance ratios, such as the 13CO/C18O ratio (X), is studied in detail. We selected the well-studied high-mass star-forming region G29.96-0.02, located at a distance of","authors_text":"M. B. Areal, M. E. Ortega, S. Paron","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-10T16:32:58Z","title":"Mapping the 13CO/C18O abundance ratio in the massive star forming region G29.96-0.02"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03741","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:f65567dad925fcbf0b089b953da55726d6f01b5a580975375cae0fc8d72b8cbe","target":"record","created_at":"2026-05-18T00:05:57Z","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":"a8d9382a8a174662922b70fa3e34c4989be6eb972136ea8dd4adcffdebc309c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-10T16:32:58Z","title_canon_sha256":"964fa0c96d725a464abe872b05c3fa3567cc24ba44ae60297bb7a2fda77f9dd8"},"schema_version":"1.0","source":{"id":"1807.03741","kind":"arxiv","version":1}},"canonical_sha256":"0bcfcd57c84fefcbb48340ced711f7b8941659f28ac19c7a190f6e954038eb00","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0bcfcd57c84fefcbb48340ced711f7b8941659f28ac19c7a190f6e954038eb00","first_computed_at":"2026-05-18T00:05:57.136031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:57.136031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ney+PHmvBY1VoZwSilfRxfGk/+Ocfh9P7ATvm/PYU6ou1PCTgYhHekzZV3xLYAmHNBuxk7oM/xlCBTSnHN+IAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:57.136516Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.03741","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f65567dad925fcbf0b089b953da55726d6f01b5a580975375cae0fc8d72b8cbe","sha256:8ca56cef3f62d384497a3c652e4d5621b3e482f3d784c5af00e859725b9e268b"],"state_sha256":"e7655e907de0b9d1aad3b539ac4638eb724d850213093454b76293e10395500a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n2/8dJ9iojq5jZhABQaCj+Avj+ymjS1GSH6QS4LsW9uCiBfrVoAuXYxjGpEbSBhyNQ6iAKTg6zufTe8sho8oAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T19:40:40.581605Z","bundle_sha256":"75b73950b6130dfd7a4854b6bec94e541eb28cca97573e276c80927989821827"}}