{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:NH62BAYNYCC4VWJKZYLNVXTSDE","short_pith_number":"pith:NH62BAYN","canonical_record":{"source":{"id":"1601.00867","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-05T15:40:55Z","cross_cats_sorted":[],"title_canon_sha256":"066dedcc3df4f61d4ef8ffee6f44821e341f469e0279d708400b08fc911f4238","abstract_canon_sha256":"aedb14be3fec6b161e45c61b89bc194567cbe8835f650e46b820bae13a693b06"},"schema_version":"1.0"},"canonical_sha256":"69fda0830dc085cad92ace16dade72191f1ebdcc89c12578883c6e3132ea7224","source":{"kind":"arxiv","id":"1601.00867","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00867","created_at":"2026-05-18T01:21:25Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00867v1","created_at":"2026-05-18T01:21:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00867","created_at":"2026-05-18T01:21:25Z"},{"alias_kind":"pith_short_12","alias_value":"NH62BAYNYCC4","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"NH62BAYNYCC4VWJK","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"NH62BAYN","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:NH62BAYNYCC4VWJKZYLNVXTSDE","target":"record","payload":{"canonical_record":{"source":{"id":"1601.00867","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-05T15:40:55Z","cross_cats_sorted":[],"title_canon_sha256":"066dedcc3df4f61d4ef8ffee6f44821e341f469e0279d708400b08fc911f4238","abstract_canon_sha256":"aedb14be3fec6b161e45c61b89bc194567cbe8835f650e46b820bae13a693b06"},"schema_version":"1.0"},"canonical_sha256":"69fda0830dc085cad92ace16dade72191f1ebdcc89c12578883c6e3132ea7224","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:25.517105Z","signature_b64":"qf18Fhvxd21WZvpC1si62HZyPCiU0V6tDwnUoc2ACUSOy5/N8WFEet8tZ/1cNvxX1t0CfSTIZSN0gXZDMME+CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69fda0830dc085cad92ace16dade72191f1ebdcc89c12578883c6e3132ea7224","last_reissued_at":"2026-05-18T01:21:25.516296Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:25.516296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.00867","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":"2026-05-18T01:21:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2VFI58c4h75pKtMuX2USEmeLz142JZmWwxsN79sMq2iel2FkXgWroB0OknrwYW24uqYtr4pkfqXetgDd8JlDBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T15:51:23.241861Z"},"content_sha256":"c4ab9e208af4ad06be4794c9a3c3c78f85f52860e489000d87b0528670e86a06","schema_version":"1.0","event_id":"sha256:c4ab9e208af4ad06be4794c9a3c3c78f85f52860e489000d87b0528670e86a06"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:NH62BAYNYCC4VWJKZYLNVXTSDE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HD 18078: A very slowly rotating Ap star with an unusual magnetic field structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D. M. Pyper, D. O. Kudryavtsev, G. Mathys, I. I. Romanyuk, J. D. Landstreet, S. J. Adelman","submitted_at":"2016-01-05T15:40:55Z","abstract_excerpt":"Context. The existence of a significant population of Ap stars with very long rotation periods (up to several hundred years) has progressively emerged over the past two decades. However, only lower limits of the periods are known for most of them because their variations have not yet been observed over a sufficient timebase.\n  Aims. We determine the rotation period of the slowly rotating Ap star HD 18078 and we derive constraints on the geometrical structure of its magnetic field.\n  Methods. We combine measurements of the mean magnetic field modulus obtained from 1990 to 1997 with determinatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00867","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":"2026-05-18T01:21:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wo5zmibKtNmGEIPM+4/9pDcIhDNksNFEh+wtJ34aRLyj7YIygVB3lhtqtyHiBzCcUbZ08ZHpbNMgdMmvcIetDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T15:51:23.242215Z"},"content_sha256":"8997dda526a5a14a3b19fb5af344ae9f8e0eb305b8e76721f22a910c14b73193","schema_version":"1.0","event_id":"sha256:8997dda526a5a14a3b19fb5af344ae9f8e0eb305b8e76721f22a910c14b73193"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NH62BAYNYCC4VWJKZYLNVXTSDE/bundle.json","state_url":"https://pith.science/pith/NH62BAYNYCC4VWJKZYLNVXTSDE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NH62BAYNYCC4VWJKZYLNVXTSDE/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":"2026-05-28T15:51:23Z","links":{"resolver":"https://pith.science/pith/NH62BAYNYCC4VWJKZYLNVXTSDE","bundle":"https://pith.science/pith/NH62BAYNYCC4VWJKZYLNVXTSDE/bundle.json","state":"https://pith.science/pith/NH62BAYNYCC4VWJKZYLNVXTSDE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NH62BAYNYCC4VWJKZYLNVXTSDE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:NH62BAYNYCC4VWJKZYLNVXTSDE","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":"aedb14be3fec6b161e45c61b89bc194567cbe8835f650e46b820bae13a693b06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-05T15:40:55Z","title_canon_sha256":"066dedcc3df4f61d4ef8ffee6f44821e341f469e0279d708400b08fc911f4238"},"schema_version":"1.0","source":{"id":"1601.00867","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00867","created_at":"2026-05-18T01:21:25Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00867v1","created_at":"2026-05-18T01:21:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00867","created_at":"2026-05-18T01:21:25Z"},{"alias_kind":"pith_short_12","alias_value":"NH62BAYNYCC4","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"NH62BAYNYCC4VWJK","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"NH62BAYN","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:8997dda526a5a14a3b19fb5af344ae9f8e0eb305b8e76721f22a910c14b73193","target":"graph","created_at":"2026-05-18T01:21:25Z","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":"Context. The existence of a significant population of Ap stars with very long rotation periods (up to several hundred years) has progressively emerged over the past two decades. However, only lower limits of the periods are known for most of them because their variations have not yet been observed over a sufficient timebase.\n  Aims. We determine the rotation period of the slowly rotating Ap star HD 18078 and we derive constraints on the geometrical structure of its magnetic field.\n  Methods. We combine measurements of the mean magnetic field modulus obtained from 1990 to 1997 with determinatio","authors_text":"D. M. Pyper, D. O. Kudryavtsev, G. Mathys, I. I. Romanyuk, J. D. Landstreet, S. J. Adelman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-05T15:40:55Z","title":"HD 18078: A very slowly rotating Ap star with an unusual magnetic field structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00867","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:c4ab9e208af4ad06be4794c9a3c3c78f85f52860e489000d87b0528670e86a06","target":"record","created_at":"2026-05-18T01:21:25Z","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":"aedb14be3fec6b161e45c61b89bc194567cbe8835f650e46b820bae13a693b06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-05T15:40:55Z","title_canon_sha256":"066dedcc3df4f61d4ef8ffee6f44821e341f469e0279d708400b08fc911f4238"},"schema_version":"1.0","source":{"id":"1601.00867","kind":"arxiv","version":1}},"canonical_sha256":"69fda0830dc085cad92ace16dade72191f1ebdcc89c12578883c6e3132ea7224","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69fda0830dc085cad92ace16dade72191f1ebdcc89c12578883c6e3132ea7224","first_computed_at":"2026-05-18T01:21:25.516296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:25.516296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qf18Fhvxd21WZvpC1si62HZyPCiU0V6tDwnUoc2ACUSOy5/N8WFEet8tZ/1cNvxX1t0CfSTIZSN0gXZDMME+CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:25.517105Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.00867","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4ab9e208af4ad06be4794c9a3c3c78f85f52860e489000d87b0528670e86a06","sha256:8997dda526a5a14a3b19fb5af344ae9f8e0eb305b8e76721f22a910c14b73193"],"state_sha256":"01c81e7b64d3a12132f2dcd7156dae7e9cf7a040cf5befaa02636fae0b5e37fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XMnQjn53tRJrTq0bb4xumS2MnnHwSOgoWTwsGfXGM8pEmUYky6+svRvMzrXWoCNGiR5HzQKWfHbcwy6vv+tBDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T15:51:23.244936Z","bundle_sha256":"665fe1ab0c1a26b2e504436123e5fa1f1963c5d093ffd8c937a061ae5c65add1"}}