{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VIXQK5BKRPSZFUSR4WBQEXJETU","short_pith_number":"pith:VIXQK5BK","canonical_record":{"source":{"id":"1201.4699","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-23T12:20:54Z","cross_cats_sorted":[],"title_canon_sha256":"6ffcdfab840e1e0ed0fddd262be41a5103f0cf166cd344e5557655587d880416","abstract_canon_sha256":"716a09621dbb72f46745927f176105c04f7d1d5f6855e5e247b857b869433522"},"schema_version":"1.0"},"canonical_sha256":"aa2f05742a8be592d251e583025d249d24204f519b278341267c8f335cf6cbfa","source":{"kind":"arxiv","id":"1201.4699","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.4699","created_at":"2026-05-18T01:58:43Z"},{"alias_kind":"arxiv_version","alias_value":"1201.4699v1","created_at":"2026-05-18T01:58:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.4699","created_at":"2026-05-18T01:58:43Z"},{"alias_kind":"pith_short_12","alias_value":"VIXQK5BKRPSZ","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VIXQK5BKRPSZFUSR","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VIXQK5BK","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VIXQK5BKRPSZFUSR4WBQEXJETU","target":"record","payload":{"canonical_record":{"source":{"id":"1201.4699","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-23T12:20:54Z","cross_cats_sorted":[],"title_canon_sha256":"6ffcdfab840e1e0ed0fddd262be41a5103f0cf166cd344e5557655587d880416","abstract_canon_sha256":"716a09621dbb72f46745927f176105c04f7d1d5f6855e5e247b857b869433522"},"schema_version":"1.0"},"canonical_sha256":"aa2f05742a8be592d251e583025d249d24204f519b278341267c8f335cf6cbfa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:43.542716Z","signature_b64":"fP8kttokhF/U5KKvp7FltOytz9Uh8dfpXbToXLVd4guliMNWNFmfTNvg7v/N6gUM7OpEf+QI8J2IwKKG+WY4CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa2f05742a8be592d251e583025d249d24204f519b278341267c8f335cf6cbfa","last_reissued_at":"2026-05-18T01:58:43.541906Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:43.541906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1201.4699","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":"2026-05-18T01:58:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JLHXK+QKh1oqzWuSPnE+FW3DpXzKr4bByWDsTNrBNero0ZJDkel1719D1WBzY90aJKul1JVHgyvMwi6cwWhdCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:27:28.631452Z"},"content_sha256":"549fec0f6d141a533ab55079a65cc5735ad4ea202a1959fc07e68b42c0515435","schema_version":"1.0","event_id":"sha256:549fec0f6d141a533ab55079a65cc5735ad4ea202a1959fc07e68b42c0515435"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VIXQK5BKRPSZFUSR4WBQEXJETU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical composition of AY Ceti: A flaring, spotted star with a white dwarf companion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"G. Barisevi\\v{c}ius, G. Tautvai\\v{s}ien\\.e, I. Ilyin, S. Berdyugina, Y. Chorniy","submitted_at":"2012-01-23T12:20:54Z","abstract_excerpt":"The detailed chemical composition of the atmosphere AY Cet (HD 7672) is determined from a high-resolution spectrum in the optical region. The main atmospheric parameters and the abundances of 22 chemical elements, including key species such as 12C, 13C, N, and O, are determined. A differential line analysis gives T_eff=5080 K, log g=3.0, [Fe/H]=-0.33, [C/Fe]=-0.17, [N/Fe]=0.17, [O/Fe]=0.05, C/N=1.58, and 12C/13C=21. Despite the high chromospheric activity, the optical spectrum of AY Cet provides a chemical composition typical for first ascent giants after the first dredge-up."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.4699","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":"2026-05-18T01:58:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h5YF/0TdFEaC70XiB5FwMghtIMRVwnBbuA8VAYMiic/cmrsPnuxa7Bcvq70qL2IL5E/7W+d6nMXh9VvRakrbAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:27:28.631807Z"},"content_sha256":"70b97e7081203bf4be03073bb8badb6a705139b29727e7556b66d1daa1f3ca28","schema_version":"1.0","event_id":"sha256:70b97e7081203bf4be03073bb8badb6a705139b29727e7556b66d1daa1f3ca28"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VIXQK5BKRPSZFUSR4WBQEXJETU/bundle.json","state_url":"https://pith.science/pith/VIXQK5BKRPSZFUSR4WBQEXJETU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VIXQK5BKRPSZFUSR4WBQEXJETU/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":"2026-05-28T09:27:28Z","links":{"resolver":"https://pith.science/pith/VIXQK5BKRPSZFUSR4WBQEXJETU","bundle":"https://pith.science/pith/VIXQK5BKRPSZFUSR4WBQEXJETU/bundle.json","state":"https://pith.science/pith/VIXQK5BKRPSZFUSR4WBQEXJETU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VIXQK5BKRPSZFUSR4WBQEXJETU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VIXQK5BKRPSZFUSR4WBQEXJETU","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":"716a09621dbb72f46745927f176105c04f7d1d5f6855e5e247b857b869433522","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-23T12:20:54Z","title_canon_sha256":"6ffcdfab840e1e0ed0fddd262be41a5103f0cf166cd344e5557655587d880416"},"schema_version":"1.0","source":{"id":"1201.4699","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.4699","created_at":"2026-05-18T01:58:43Z"},{"alias_kind":"arxiv_version","alias_value":"1201.4699v1","created_at":"2026-05-18T01:58:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.4699","created_at":"2026-05-18T01:58:43Z"},{"alias_kind":"pith_short_12","alias_value":"VIXQK5BKRPSZ","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VIXQK5BKRPSZFUSR","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VIXQK5BK","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:70b97e7081203bf4be03073bb8badb6a705139b29727e7556b66d1daa1f3ca28","target":"graph","created_at":"2026-05-18T01:58:43Z","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":"The detailed chemical composition of the atmosphere AY Cet (HD 7672) is determined from a high-resolution spectrum in the optical region. The main atmospheric parameters and the abundances of 22 chemical elements, including key species such as 12C, 13C, N, and O, are determined. A differential line analysis gives T_eff=5080 K, log g=3.0, [Fe/H]=-0.33, [C/Fe]=-0.17, [N/Fe]=0.17, [O/Fe]=0.05, C/N=1.58, and 12C/13C=21. Despite the high chromospheric activity, the optical spectrum of AY Cet provides a chemical composition typical for first ascent giants after the first dredge-up.","authors_text":"G. Barisevi\\v{c}ius, G. Tautvai\\v{s}ien\\.e, I. Ilyin, S. Berdyugina, Y. Chorniy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-23T12:20:54Z","title":"Chemical composition of AY Ceti: A flaring, spotted star with a white dwarf companion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.4699","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":"sha256:549fec0f6d141a533ab55079a65cc5735ad4ea202a1959fc07e68b42c0515435","target":"record","created_at":"2026-05-18T01:58:43Z","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":"716a09621dbb72f46745927f176105c04f7d1d5f6855e5e247b857b869433522","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-23T12:20:54Z","title_canon_sha256":"6ffcdfab840e1e0ed0fddd262be41a5103f0cf166cd344e5557655587d880416"},"schema_version":"1.0","source":{"id":"1201.4699","kind":"arxiv","version":1}},"canonical_sha256":"aa2f05742a8be592d251e583025d249d24204f519b278341267c8f335cf6cbfa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa2f05742a8be592d251e583025d249d24204f519b278341267c8f335cf6cbfa","first_computed_at":"2026-05-18T01:58:43.541906Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:43.541906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fP8kttokhF/U5KKvp7FltOytz9Uh8dfpXbToXLVd4guliMNWNFmfTNvg7v/N6gUM7OpEf+QI8J2IwKKG+WY4CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:43.542716Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.4699","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:549fec0f6d141a533ab55079a65cc5735ad4ea202a1959fc07e68b42c0515435","sha256:70b97e7081203bf4be03073bb8badb6a705139b29727e7556b66d1daa1f3ca28"],"state_sha256":"db9c9792d824cb8faac4b71bbeeba5f97c7d2351a53c9cacce4e8d84db754654"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CkEM5mZqdaYiiVInIOOEcF/RQzDLfmgNEVMSEUmlIcd9cWt1IOnzMR9xwaItTyQtCcQTlukre09PIUv+OJLACA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T09:27:28.633760Z","bundle_sha256":"e99d2c0252ed5941186bbaf99568c94e2f39426730cef4ec32c797f8ed4b9d92"}}