{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:XHD5MIKD7YE4TJ46EJZOBK7ZWT","short_pith_number":"pith:XHD5MIKD","canonical_record":{"source":{"id":"1412.8067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-27T16:08:52Z","cross_cats_sorted":[],"title_canon_sha256":"b929be5f647f294a5169ee56c8b023b86099f6ff13f8f61892b5c4a1e845b046","abstract_canon_sha256":"b644ab59249be8dbde0a31d28edd3be05af10b357d041ac632deff3ab68d659b"},"schema_version":"1.0"},"canonical_sha256":"b9c7d62143fe09c9a79e2272e0abf9b4f71c25685f2774e1b03d532525e7fb80","source":{"kind":"arxiv","id":"1412.8067","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8067","created_at":"2026-05-18T02:30:24Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8067v1","created_at":"2026-05-18T02:30:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8067","created_at":"2026-05-18T02:30:24Z"},{"alias_kind":"pith_short_12","alias_value":"XHD5MIKD7YE4","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XHD5MIKD7YE4TJ46","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XHD5MIKD","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:XHD5MIKD7YE4TJ46EJZOBK7ZWT","target":"record","payload":{"canonical_record":{"source":{"id":"1412.8067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-27T16:08:52Z","cross_cats_sorted":[],"title_canon_sha256":"b929be5f647f294a5169ee56c8b023b86099f6ff13f8f61892b5c4a1e845b046","abstract_canon_sha256":"b644ab59249be8dbde0a31d28edd3be05af10b357d041ac632deff3ab68d659b"},"schema_version":"1.0"},"canonical_sha256":"b9c7d62143fe09c9a79e2272e0abf9b4f71c25685f2774e1b03d532525e7fb80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:30:24.282671Z","signature_b64":"NjBOgiQHgrFEh1nC75Jwm4q2SYuWig1holh53BZkIMMFZ2ipi2pG15p5N5icueoDBLvzvekFnlIPlnf5yyfbAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9c7d62143fe09c9a79e2272e0abf9b4f71c25685f2774e1b03d532525e7fb80","last_reissued_at":"2026-05-18T02:30:24.282188Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:30:24.282188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.8067","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":"2026-05-18T02:30:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"524NPKhAbN2SSuAeB5N2/Y5ON2l80+FhC5F/dN0vWZ3YvNEXInR6/6HkCSyJ8KMd8tv8zvhCz0ltopoSSIhNAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:00:25.814864Z"},"content_sha256":"e7f71ab6b09458edccd2e538df79daf2732e9492ce38a29d7d3ed1c3825d591b","schema_version":"1.0","event_id":"sha256:e7f71ab6b09458edccd2e538df79daf2732e9492ce38a29d7d3ed1c3825d591b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:XHD5MIKD7YE4TJ46EJZOBK7ZWT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hercules X-1 - another 'first': long-term decay of the cyclotron line energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"R\\\"udiger Staubert","submitted_at":"2014-12-27T16:08:52Z","abstract_excerpt":"Her~X-1 is one of the most remarkable members of the class of binary X-ray pulsars. It does not only show a large number of observable features, but has repeatedly been the first object for which fundamental discoveries were made: it was the first to show a super-orbital modulation, the first to reveal a cyclotron line in its spectrum and the first in which systematic variations of the cyclotron line energy were detected, namely variations with pulse phase (by $\\sim$ 25\\%) and a positive correlation with X-ray luminosity ($\\sim$ 5\\% increase for a factor of two increase in luminosity). Now we "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8067","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":"2026-05-18T02:30:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"suFO1mh4IZuk0B8U9zt1UjXaT8zpiVss0uNKBqcKPFY3DXJjVWlfPOZSQsjNXJ+j9L3u9jsJ/N62kjhkqPUeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:00:25.815578Z"},"content_sha256":"05484291c17ff24fbffb426968995facd0c827e48a4eee7601833077dbb55cec","schema_version":"1.0","event_id":"sha256:05484291c17ff24fbffb426968995facd0c827e48a4eee7601833077dbb55cec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT/bundle.json","state_url":"https://pith.science/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT/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":"2026-06-01T05:00:25Z","links":{"resolver":"https://pith.science/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT","bundle":"https://pith.science/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT/bundle.json","state":"https://pith.science/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHD5MIKD7YE4TJ46EJZOBK7ZWT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XHD5MIKD7YE4TJ46EJZOBK7ZWT","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":"b644ab59249be8dbde0a31d28edd3be05af10b357d041ac632deff3ab68d659b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-27T16:08:52Z","title_canon_sha256":"b929be5f647f294a5169ee56c8b023b86099f6ff13f8f61892b5c4a1e845b046"},"schema_version":"1.0","source":{"id":"1412.8067","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8067","created_at":"2026-05-18T02:30:24Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8067v1","created_at":"2026-05-18T02:30:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8067","created_at":"2026-05-18T02:30:24Z"},{"alias_kind":"pith_short_12","alias_value":"XHD5MIKD7YE4","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XHD5MIKD7YE4TJ46","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XHD5MIKD","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:05484291c17ff24fbffb426968995facd0c827e48a4eee7601833077dbb55cec","target":"graph","created_at":"2026-05-18T02:30:24Z","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":"Her~X-1 is one of the most remarkable members of the class of binary X-ray pulsars. It does not only show a large number of observable features, but has repeatedly been the first object for which fundamental discoveries were made: it was the first to show a super-orbital modulation, the first to reveal a cyclotron line in its spectrum and the first in which systematic variations of the cyclotron line energy were detected, namely variations with pulse phase (by $\\sim$ 25\\%) and a positive correlation with X-ray luminosity ($\\sim$ 5\\% increase for a factor of two increase in luminosity). Now we ","authors_text":"R\\\"udiger Staubert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-27T16:08:52Z","title":"Hercules X-1 - another 'first': long-term decay of the cyclotron line energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8067","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:e7f71ab6b09458edccd2e538df79daf2732e9492ce38a29d7d3ed1c3825d591b","target":"record","created_at":"2026-05-18T02:30:24Z","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":"b644ab59249be8dbde0a31d28edd3be05af10b357d041ac632deff3ab68d659b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-27T16:08:52Z","title_canon_sha256":"b929be5f647f294a5169ee56c8b023b86099f6ff13f8f61892b5c4a1e845b046"},"schema_version":"1.0","source":{"id":"1412.8067","kind":"arxiv","version":1}},"canonical_sha256":"b9c7d62143fe09c9a79e2272e0abf9b4f71c25685f2774e1b03d532525e7fb80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9c7d62143fe09c9a79e2272e0abf9b4f71c25685f2774e1b03d532525e7fb80","first_computed_at":"2026-05-18T02:30:24.282188Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:30:24.282188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NjBOgiQHgrFEh1nC75Jwm4q2SYuWig1holh53BZkIMMFZ2ipi2pG15p5N5icueoDBLvzvekFnlIPlnf5yyfbAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:30:24.282671Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8067","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e7f71ab6b09458edccd2e538df79daf2732e9492ce38a29d7d3ed1c3825d591b","sha256:05484291c17ff24fbffb426968995facd0c827e48a4eee7601833077dbb55cec"],"state_sha256":"2cc661d5d5d652da1459fe63b66e59823bc90542c2c9bd2aa411bd3cbad35c87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"68trTxbQnvJ1wwVF6Hl9qYY1YxTuZQy4tR9y/LOCReVnXK1deAEngudjksFb1MdVFba5fKaAH5EaAGQFrXktDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T05:00:25.819118Z","bundle_sha256":"6efc452acf1cf48d0a956121deaa7da6a104729a87d4108599f95fa87669557b"}}