{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:NKK4U34NALLTZ4OMOGBP75H5VF","short_pith_number":"pith:NKK4U34N","canonical_record":{"source":{"id":"1010.1658","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-08T10:48:27Z","cross_cats_sorted":[],"title_canon_sha256":"df8d8d4230775e9cc74ab784ef5c1256be0ed4b81fb5129ff38358591f8d3dbb","abstract_canon_sha256":"21aefdf5540245de5b70fc8fbc61aabe11c0dc2d28657ce26d4670deb0965e52"},"schema_version":"1.0"},"canonical_sha256":"6a95ca6f8d02d73cf1cc7182fff4fda9607a7f1ca0839a97c2471c40058db1b3","source":{"kind":"arxiv","id":"1010.1658","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.1658","created_at":"2026-05-18T02:05:07Z"},{"alias_kind":"arxiv_version","alias_value":"1010.1658v1","created_at":"2026-05-18T02:05:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.1658","created_at":"2026-05-18T02:05:07Z"},{"alias_kind":"pith_short_12","alias_value":"NKK4U34NALLT","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NKK4U34NALLTZ4OM","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NKK4U34N","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:NKK4U34NALLTZ4OMOGBP75H5VF","target":"record","payload":{"canonical_record":{"source":{"id":"1010.1658","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-08T10:48:27Z","cross_cats_sorted":[],"title_canon_sha256":"df8d8d4230775e9cc74ab784ef5c1256be0ed4b81fb5129ff38358591f8d3dbb","abstract_canon_sha256":"21aefdf5540245de5b70fc8fbc61aabe11c0dc2d28657ce26d4670deb0965e52"},"schema_version":"1.0"},"canonical_sha256":"6a95ca6f8d02d73cf1cc7182fff4fda9607a7f1ca0839a97c2471c40058db1b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:07.595350Z","signature_b64":"TFOYseuaXxBeq7eHCso4DKaL1azpfJZ1ZVYerd5Ffp7f4pu2JOpe1q8JrxLhS0R8iS8Pv2dDYSHmJPQqXsF6Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a95ca6f8d02d73cf1cc7182fff4fda9607a7f1ca0839a97c2471c40058db1b3","last_reissued_at":"2026-05-18T02:05:07.594597Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:07.594597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.1658","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":"2026-05-18T02:05:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FTmz05C0hFJcQYMV6RWQFPOMgqRNfsdJj94LjGtH3zz5vN7dFMp7EkBixbz5a1WKWSd96IUv3MPR7WRZGRxvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T22:43:33.490165Z"},"content_sha256":"aad554f84deab897432a8b64f5774161f49365d5a9e6387434f60944134d65c5","schema_version":"1.0","event_id":"sha256:aad554f84deab897432a8b64f5774161f49365d5a9e6387434f60944134d65c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:NKK4U34NALLTZ4OMOGBP75H5VF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical pattern across the young associations ONC and OB1b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"50125 Firenze, Francesco Palla (1) ((1) INAF - Osservatorio Astrofisico di Arcetri, Italy), Katia Biazzo (1), Largo E. Fermi 5, Sofia Randich (1)","submitted_at":"2010-10-08T10:48:27Z","abstract_excerpt":"Context. Abundances of iron-peak and alpha-elements are poorly known in Orion, and the available measurements yield contradictory results. Aims. We measure accurate and homogeneous elemental abundances of the Orion subgroups ONC and OB1b, and search for abundance differences across the Orion complex. Methods. We present FLAMES/UVES spectroscopic observations of 20 members of the ONC and OB1b. We measured radial velocity, veiling, effective temperature using two spectroscopic methods, and determined the chemical abundances of Fe, Na, Al, Si, Ca, Ti, and Ni using the code MOOG. We also performed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.1658","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":"2026-05-18T02:05:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xXMHk6BL69bflo9SYSVu+lnqjDsxliWdfjmUnyUwqLIStf4w2geCfPyDZiZMIBY021IB20dgp0KTfWI4IuFwAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T22:43:33.490519Z"},"content_sha256":"d4a53fd6162c224c5bf16caa197ae18d98fa002f471fd324ab001edbad00abde","schema_version":"1.0","event_id":"sha256:d4a53fd6162c224c5bf16caa197ae18d98fa002f471fd324ab001edbad00abde"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NKK4U34NALLTZ4OMOGBP75H5VF/bundle.json","state_url":"https://pith.science/pith/NKK4U34NALLTZ4OMOGBP75H5VF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NKK4U34NALLTZ4OMOGBP75H5VF/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":"2026-06-24T22:43:33Z","links":{"resolver":"https://pith.science/pith/NKK4U34NALLTZ4OMOGBP75H5VF","bundle":"https://pith.science/pith/NKK4U34NALLTZ4OMOGBP75H5VF/bundle.json","state":"https://pith.science/pith/NKK4U34NALLTZ4OMOGBP75H5VF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NKK4U34NALLTZ4OMOGBP75H5VF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:NKK4U34NALLTZ4OMOGBP75H5VF","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":"21aefdf5540245de5b70fc8fbc61aabe11c0dc2d28657ce26d4670deb0965e52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-08T10:48:27Z","title_canon_sha256":"df8d8d4230775e9cc74ab784ef5c1256be0ed4b81fb5129ff38358591f8d3dbb"},"schema_version":"1.0","source":{"id":"1010.1658","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.1658","created_at":"2026-05-18T02:05:07Z"},{"alias_kind":"arxiv_version","alias_value":"1010.1658v1","created_at":"2026-05-18T02:05:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.1658","created_at":"2026-05-18T02:05:07Z"},{"alias_kind":"pith_short_12","alias_value":"NKK4U34NALLT","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NKK4U34NALLTZ4OM","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NKK4U34N","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:d4a53fd6162c224c5bf16caa197ae18d98fa002f471fd324ab001edbad00abde","target":"graph","created_at":"2026-05-18T02:05:07Z","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":"Context. Abundances of iron-peak and alpha-elements are poorly known in Orion, and the available measurements yield contradictory results. Aims. We measure accurate and homogeneous elemental abundances of the Orion subgroups ONC and OB1b, and search for abundance differences across the Orion complex. Methods. We present FLAMES/UVES spectroscopic observations of 20 members of the ONC and OB1b. We measured radial velocity, veiling, effective temperature using two spectroscopic methods, and determined the chemical abundances of Fe, Na, Al, Si, Ca, Ti, and Ni using the code MOOG. We also performed","authors_text":"50125 Firenze, Francesco Palla (1) ((1) INAF - Osservatorio Astrofisico di Arcetri, Italy), Katia Biazzo (1), Largo E. Fermi 5, Sofia Randich (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-08T10:48:27Z","title":"Chemical pattern across the young associations ONC and OB1b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.1658","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:aad554f84deab897432a8b64f5774161f49365d5a9e6387434f60944134d65c5","target":"record","created_at":"2026-05-18T02:05:07Z","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":"21aefdf5540245de5b70fc8fbc61aabe11c0dc2d28657ce26d4670deb0965e52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-08T10:48:27Z","title_canon_sha256":"df8d8d4230775e9cc74ab784ef5c1256be0ed4b81fb5129ff38358591f8d3dbb"},"schema_version":"1.0","source":{"id":"1010.1658","kind":"arxiv","version":1}},"canonical_sha256":"6a95ca6f8d02d73cf1cc7182fff4fda9607a7f1ca0839a97c2471c40058db1b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a95ca6f8d02d73cf1cc7182fff4fda9607a7f1ca0839a97c2471c40058db1b3","first_computed_at":"2026-05-18T02:05:07.594597Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:07.594597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TFOYseuaXxBeq7eHCso4DKaL1azpfJZ1ZVYerd5Ffp7f4pu2JOpe1q8JrxLhS0R8iS8Pv2dDYSHmJPQqXsF6Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:07.595350Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.1658","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aad554f84deab897432a8b64f5774161f49365d5a9e6387434f60944134d65c5","sha256:d4a53fd6162c224c5bf16caa197ae18d98fa002f471fd324ab001edbad00abde"],"state_sha256":"5c77a9f0e8cfb94c3170ecd419e34ba7ddc97d5a4951e103d54f3fa0268946d6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h85nQpM1vxAutN8IRAqLa0wQNmQzCpw63kyFvG/CUuCJS8YZ1FD2NTeIs1H5ive5U5JtZL+zYaiJe7u3MwCwDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T22:43:33.492424Z","bundle_sha256":"262b25d784df54807f451333fd84419268f346de322ebec36dee0515fc61d1dc"}}