{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:Q6C75F27PNFP6DNAUIL6RWUBXY","short_pith_number":"pith:Q6C75F27","canonical_record":{"source":{"id":"1411.7823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-28T11:40:17Z","cross_cats_sorted":[],"title_canon_sha256":"f4a2bb8faa9949bd14a1e3c3f9d234664c327f5c70632caf31ecd915fd2eaf8b","abstract_canon_sha256":"8399b867fc6bbda0ad4bd01effc51bab86abb1b57a527a9dcba46308527c0e45"},"schema_version":"1.0"},"canonical_sha256":"8785fe975f7b4aff0da0a217e8da81be017055b3f99a382f1f9220e2c6a563b9","source":{"kind":"arxiv","id":"1411.7823","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.7823","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"arxiv_version","alias_value":"1411.7823v1","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.7823","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"pith_short_12","alias_value":"Q6C75F27PNFP","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"Q6C75F27PNFP6DNA","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"Q6C75F27","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:Q6C75F27PNFP6DNAUIL6RWUBXY","target":"record","payload":{"canonical_record":{"source":{"id":"1411.7823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-28T11:40:17Z","cross_cats_sorted":[],"title_canon_sha256":"f4a2bb8faa9949bd14a1e3c3f9d234664c327f5c70632caf31ecd915fd2eaf8b","abstract_canon_sha256":"8399b867fc6bbda0ad4bd01effc51bab86abb1b57a527a9dcba46308527c0e45"},"schema_version":"1.0"},"canonical_sha256":"8785fe975f7b4aff0da0a217e8da81be017055b3f99a382f1f9220e2c6a563b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:25.109362Z","signature_b64":"Oof5fzaa0ALddBH8nLB1QBFpwRNcHPyE1BmH8mZQdHL4w7reWFkWKz6f6mA6qWOAO8Kk1vdc7UtoKeLJuJblBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8785fe975f7b4aff0da0a217e8da81be017055b3f99a382f1f9220e2c6a563b9","last_reissued_at":"2026-05-18T01:41:25.108775Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:25.108775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.7823","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":"2026-05-18T01:41:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"46+D1i8jybu9BZybUneDf6jHEYeI98fhOPryHrpoQGsqRhAD0YihBEN33xlPwC9mbMHNjezUCKTfYw24n4aiBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T18:04:54.313798Z"},"content_sha256":"25b75bf37dcf90cda5a29efcc8defdafea4197960a459b17f1b4e97b66a12cd7","schema_version":"1.0","event_id":"sha256:25b75bf37dcf90cda5a29efcc8defdafea4197960a459b17f1b4e97b66a12cd7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:Q6C75F27PNFP6DNAUIL6RWUBXY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Herschel -PACS observations of [OI] and H2O in Cha II","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Bayo, B. Mer\\'in, B. Montesinos, C. Eiroa, D. Barrado, G. Duch\\^ne, G. Mathews, I. Kamp, J. P. Williams, L. Podio, N. Hu\\'elamo, P. Riviere-Marichalar, S. Vicente, W. R. F. Dent","submitted_at":"2014-11-28T11:40:17Z","abstract_excerpt":"Gas plays a major role in the dynamical evolution of protoplanetary discs. Its coupling with the dust is the key to our understanding planetary formation. Studying the gas content is therefore a crucial step towards understanding protoplanetary discs evolution. Such a study can be made through spectroscopic observations of emission lines in the far-infrared, where some of the most important gas coolants emit, such as the [OI] 3P1-3 P2 transition at 63.18 microns. We aim at characterising the gas content of protoplanetary discs in the intermediate-aged Chamaeleon II (Cha II) star forming region"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.7823","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":"2026-05-18T01:41:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IX+6iGeKa2QqzpsfUyJor/y+cqrEu5naM3yGkPU+4yT6ihs8gkdIrgFvQoo5eLjNFkNIvh8AbpOdIaet/cwUDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T18:04:54.314588Z"},"content_sha256":"b6fb19f003154e5671d201dad2c2d8ef922d7ab86e36aafff1391c8611961342","schema_version":"1.0","event_id":"sha256:b6fb19f003154e5671d201dad2c2d8ef922d7ab86e36aafff1391c8611961342"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q6C75F27PNFP6DNAUIL6RWUBXY/bundle.json","state_url":"https://pith.science/pith/Q6C75F27PNFP6DNAUIL6RWUBXY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q6C75F27PNFP6DNAUIL6RWUBXY/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":"2026-06-08T18:04:54Z","links":{"resolver":"https://pith.science/pith/Q6C75F27PNFP6DNAUIL6RWUBXY","bundle":"https://pith.science/pith/Q6C75F27PNFP6DNAUIL6RWUBXY/bundle.json","state":"https://pith.science/pith/Q6C75F27PNFP6DNAUIL6RWUBXY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q6C75F27PNFP6DNAUIL6RWUBXY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:Q6C75F27PNFP6DNAUIL6RWUBXY","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":"8399b867fc6bbda0ad4bd01effc51bab86abb1b57a527a9dcba46308527c0e45","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-28T11:40:17Z","title_canon_sha256":"f4a2bb8faa9949bd14a1e3c3f9d234664c327f5c70632caf31ecd915fd2eaf8b"},"schema_version":"1.0","source":{"id":"1411.7823","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.7823","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"arxiv_version","alias_value":"1411.7823v1","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.7823","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"pith_short_12","alias_value":"Q6C75F27PNFP","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"Q6C75F27PNFP6DNA","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"Q6C75F27","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:b6fb19f003154e5671d201dad2c2d8ef922d7ab86e36aafff1391c8611961342","target":"graph","created_at":"2026-05-18T01:41:25Z","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":"Gas plays a major role in the dynamical evolution of protoplanetary discs. Its coupling with the dust is the key to our understanding planetary formation. Studying the gas content is therefore a crucial step towards understanding protoplanetary discs evolution. Such a study can be made through spectroscopic observations of emission lines in the far-infrared, where some of the most important gas coolants emit, such as the [OI] 3P1-3 P2 transition at 63.18 microns. We aim at characterising the gas content of protoplanetary discs in the intermediate-aged Chamaeleon II (Cha II) star forming region","authors_text":"A. Bayo, B. Mer\\'in, B. Montesinos, C. Eiroa, D. Barrado, G. Duch\\^ne, G. Mathews, I. Kamp, J. P. Williams, L. Podio, N. Hu\\'elamo, P. Riviere-Marichalar, S. Vicente, W. R. F. Dent","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-28T11:40:17Z","title":"Herschel -PACS observations of [OI] and H2O in Cha II"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.7823","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":"sha256:25b75bf37dcf90cda5a29efcc8defdafea4197960a459b17f1b4e97b66a12cd7","target":"record","created_at":"2026-05-18T01:41:25Z","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":"8399b867fc6bbda0ad4bd01effc51bab86abb1b57a527a9dcba46308527c0e45","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-28T11:40:17Z","title_canon_sha256":"f4a2bb8faa9949bd14a1e3c3f9d234664c327f5c70632caf31ecd915fd2eaf8b"},"schema_version":"1.0","source":{"id":"1411.7823","kind":"arxiv","version":1}},"canonical_sha256":"8785fe975f7b4aff0da0a217e8da81be017055b3f99a382f1f9220e2c6a563b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8785fe975f7b4aff0da0a217e8da81be017055b3f99a382f1f9220e2c6a563b9","first_computed_at":"2026-05-18T01:41:25.108775Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:25.108775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Oof5fzaa0ALddBH8nLB1QBFpwRNcHPyE1BmH8mZQdHL4w7reWFkWKz6f6mA6qWOAO8Kk1vdc7UtoKeLJuJblBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:25.109362Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.7823","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25b75bf37dcf90cda5a29efcc8defdafea4197960a459b17f1b4e97b66a12cd7","sha256:b6fb19f003154e5671d201dad2c2d8ef922d7ab86e36aafff1391c8611961342"],"state_sha256":"56db9743515f7096d26f2225a4eac813470d6ba2304da0ded18ae2728b35ce21"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BXBm5KFKGneNWGbQpOfBwDC6LEOBx3eI6VZj+14CRF3ia10+UmH70PSTa9yOk5t7P77VZcDm+8wzwyDyBo8yDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T18:04:54.318661Z","bundle_sha256":"f50536d5e6f57ce84722184896472ccab836cd5cc46044083b16fad407eebe34"}}