{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LG4X6JWKVRUZKBX6XRNBM4PNRF","short_pith_number":"pith:LG4X6JWK","canonical_record":{"source":{"id":"2411.12507","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-11-19T13:49:39Z","cross_cats_sorted":[],"title_canon_sha256":"92bb9e86413e05ea046867f2ead2a8bb9c17a05df98647df78061a984c37adf2","abstract_canon_sha256":"aadf38adb91e673de0e5a30b8efbd05e54ccece5980ab252c96ac3b68a28facd"},"schema_version":"1.0"},"canonical_sha256":"59b97f26caac699506febc5a1671ed8953049c0333be9149874c24eb165ea7f4","source":{"kind":"arxiv","id":"2411.12507","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.12507","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"arxiv_version","alias_value":"2411.12507v1","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.12507","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"pith_short_12","alias_value":"LG4X6JWKVRUZ","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"pith_short_16","alias_value":"LG4X6JWKVRUZKBX6","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"pith_short_8","alias_value":"LG4X6JWK","created_at":"2026-07-05T09:37:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LG4X6JWKVRUZKBX6XRNBM4PNRF","target":"record","payload":{"canonical_record":{"source":{"id":"2411.12507","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-11-19T13:49:39Z","cross_cats_sorted":[],"title_canon_sha256":"92bb9e86413e05ea046867f2ead2a8bb9c17a05df98647df78061a984c37adf2","abstract_canon_sha256":"aadf38adb91e673de0e5a30b8efbd05e54ccece5980ab252c96ac3b68a28facd"},"schema_version":"1.0"},"canonical_sha256":"59b97f26caac699506febc5a1671ed8953049c0333be9149874c24eb165ea7f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:37:44.162826Z","signature_b64":"5IPg38tY0H2AHXCW6BKlAUOXrM4bvluSjX/JAuMnxAmVJwDdZY3o/ifHIy972+dqXcIvHBG6+I7YM2VDGtUrAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59b97f26caac699506febc5a1671ed8953049c0333be9149874c24eb165ea7f4","last_reissued_at":"2026-07-05T09:37:44.162343Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:37:44.162343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2411.12507","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":"2026-07-05T09:37:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LfTwHR7pI/04tysgerg/8UOtrMI7SBJxyU62qdB/2B21fxLr415tAVEv5uXLWBEJB/2rnhnvV2hLdUfkpx79Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T23:51:10.003528Z"},"content_sha256":"bedd98e8cc2684274dd150799faf436a396144d13c14c9cd97279d1eb091321b","schema_version":"1.0","event_id":"sha256:bedd98e8cc2684274dd150799faf436a396144d13c14c9cd97279d1eb091321b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LG4X6JWKVRUZKBX6XRNBM4PNRF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fifty Years After the Discovery of the First Stellar-Mass Black Hole: A Review of Cyg X-1","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Jiachen Jiang","submitted_at":"2024-11-19T13:49:39Z","abstract_excerpt":"Around 50 years ago, the famous bet between Stephen Hawking and Kip Thorne on whether Cyg X-1 hosts a stellar-mass black hole became a well-known story in the history of black hole science. Today, Cyg X-1 is widely recognised as hosting a stellar-mass black hole with a mass of approximately 20 solar masses. With the advancement of X-ray telescopes, Cyg X-1 has become a prime laboratory for studies in stellar evolution, accretion physics, and high-energy plasma physics. In this review, we explore the latest results from X-ray observations of Cyg X-1, focusing on its implications for black hole "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.12507","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2411.12507/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T09:37:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cj752wAGuaHZVCOkrjwcnpi6L5XJNGCxBpMlqH9sMyjHgq6qks/HgHXviNBwGVHBYFU9SPw9RFraFZ3n5RK/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T23:51:10.004036Z"},"content_sha256":"3a8422187bc1a6a89e107ff12eddb22fc2e9a2915c031498dfa410720b4d8d88","schema_version":"1.0","event_id":"sha256:3a8422187bc1a6a89e107ff12eddb22fc2e9a2915c031498dfa410720b4d8d88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF/bundle.json","state_url":"https://pith.science/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF/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":"2026-08-02T23:51:10Z","links":{"resolver":"https://pith.science/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF","bundle":"https://pith.science/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF/bundle.json","state":"https://pith.science/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LG4X6JWKVRUZKBX6XRNBM4PNRF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LG4X6JWKVRUZKBX6XRNBM4PNRF","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":"aadf38adb91e673de0e5a30b8efbd05e54ccece5980ab252c96ac3b68a28facd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-11-19T13:49:39Z","title_canon_sha256":"92bb9e86413e05ea046867f2ead2a8bb9c17a05df98647df78061a984c37adf2"},"schema_version":"1.0","source":{"id":"2411.12507","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.12507","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"arxiv_version","alias_value":"2411.12507v1","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.12507","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"pith_short_12","alias_value":"LG4X6JWKVRUZ","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"pith_short_16","alias_value":"LG4X6JWKVRUZKBX6","created_at":"2026-07-05T09:37:44Z"},{"alias_kind":"pith_short_8","alias_value":"LG4X6JWK","created_at":"2026-07-05T09:37:44Z"}],"graph_snapshots":[{"event_id":"sha256:3a8422187bc1a6a89e107ff12eddb22fc2e9a2915c031498dfa410720b4d8d88","target":"graph","created_at":"2026-07-05T09:37:44Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2411.12507/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Around 50 years ago, the famous bet between Stephen Hawking and Kip Thorne on whether Cyg X-1 hosts a stellar-mass black hole became a well-known story in the history of black hole science. Today, Cyg X-1 is widely recognised as hosting a stellar-mass black hole with a mass of approximately 20 solar masses. With the advancement of X-ray telescopes, Cyg X-1 has become a prime laboratory for studies in stellar evolution, accretion physics, and high-energy plasma physics. In this review, we explore the latest results from X-ray observations of Cyg X-1, focusing on its implications for black hole ","authors_text":"Jiachen Jiang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-11-19T13:49:39Z","title":"Fifty Years After the Discovery of the First Stellar-Mass Black Hole: A Review of Cyg X-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.12507","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:bedd98e8cc2684274dd150799faf436a396144d13c14c9cd97279d1eb091321b","target":"record","created_at":"2026-07-05T09:37:44Z","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":"aadf38adb91e673de0e5a30b8efbd05e54ccece5980ab252c96ac3b68a28facd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-11-19T13:49:39Z","title_canon_sha256":"92bb9e86413e05ea046867f2ead2a8bb9c17a05df98647df78061a984c37adf2"},"schema_version":"1.0","source":{"id":"2411.12507","kind":"arxiv","version":1}},"canonical_sha256":"59b97f26caac699506febc5a1671ed8953049c0333be9149874c24eb165ea7f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59b97f26caac699506febc5a1671ed8953049c0333be9149874c24eb165ea7f4","first_computed_at":"2026-07-05T09:37:44.162343Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:37:44.162343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5IPg38tY0H2AHXCW6BKlAUOXrM4bvluSjX/JAuMnxAmVJwDdZY3o/ifHIy972+dqXcIvHBG6+I7YM2VDGtUrAA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:37:44.162826Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.12507","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bedd98e8cc2684274dd150799faf436a396144d13c14c9cd97279d1eb091321b","sha256:3a8422187bc1a6a89e107ff12eddb22fc2e9a2915c031498dfa410720b4d8d88"],"state_sha256":"8662cab813d93f971140536a8802fe16bf31d7b29a21a582578edab503578e8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Verb6f+UziyS7eCRsS9lNgUh4diDYgrCvw/kCE35jnGMLGBLcz177V0mV82ThgE4AuGx+bVgmkztIqL5P1tXAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T23:51:10.007393Z","bundle_sha256":"b06c27be4cb07ee963f0fa2c59b52b3115078a10e4c99ff5b5a7edf5ad7aea7f"}}