{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CNHX7JU52N5L3RIFHW7WQUWTA7","short_pith_number":"pith:CNHX7JU5","canonical_record":{"source":{"id":"1204.3289","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-15T16:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"1c9f561660e0f62289a89d0aa93f3030fdfaa02a3d3d568176ac68635072c0d5","abstract_canon_sha256":"a5905aa72ea38030833134ac8d27577dd6810e24289d6ec27d30fbcb08f0111e"},"schema_version":"1.0"},"canonical_sha256":"134f7fa69dd37abdc5053dbf6852d307ef0ef4d34bc5c97c4e3c1ac39dba7a83","source":{"kind":"arxiv","id":"1204.3289","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3289","created_at":"2026-05-18T01:57:52Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3289v2","created_at":"2026-05-18T01:57:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3289","created_at":"2026-05-18T01:57:52Z"},{"alias_kind":"pith_short_12","alias_value":"CNHX7JU52N5L","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CNHX7JU52N5L3RIF","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CNHX7JU5","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CNHX7JU52N5L3RIFHW7WQUWTA7","target":"record","payload":{"canonical_record":{"source":{"id":"1204.3289","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-15T16:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"1c9f561660e0f62289a89d0aa93f3030fdfaa02a3d3d568176ac68635072c0d5","abstract_canon_sha256":"a5905aa72ea38030833134ac8d27577dd6810e24289d6ec27d30fbcb08f0111e"},"schema_version":"1.0"},"canonical_sha256":"134f7fa69dd37abdc5053dbf6852d307ef0ef4d34bc5c97c4e3c1ac39dba7a83","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:52.390773Z","signature_b64":"xN6DDG5xveLVa51JtJbCxh+HtWNvZbPPvpIoncBBF1R8SCe1xe6UzqxsNRdF2ne+G8b32saLTY6qpvY7gql7Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"134f7fa69dd37abdc5053dbf6852d307ef0ef4d34bc5c97c4e3c1ac39dba7a83","last_reissued_at":"2026-05-18T01:57:52.390401Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:52.390401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.3289","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MLI7VeMqzKLUJcUnFYrNjxDIaPVvOFyYoF3cvn92B+IrFMNhfsvrB7wdOa2oPd9ajx2RO7Rn954L3dNPq6lgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:25:39.592307Z"},"content_sha256":"a2f2bc1d65fcc1c304ea304d026c01682cdd96d9e405ed72655bd96ba801fe07","schema_version":"1.0","event_id":"sha256:a2f2bc1d65fcc1c304ea304d026c01682cdd96d9e405ed72655bd96ba801fe07"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CNHX7JU52N5L3RIFHW7WQUWTA7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Disc-Corona Model for a Rotating Black Hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Lixin Li, Renyi Ma, Xiaolong Gong","submitted_at":"2012-04-15T16:35:52Z","abstract_excerpt":"We propose a disc-corona model in which a geometrically thin, optically thick disc surrounds a Kerr black hole, and magnetic fields exert a time-steady torque on the inner edge of the accretion disc. The analytical expression of the total gravitational power is derived from the thin-disc dynamics equations by using this new boundary condition. It is shown that the magnetic torque can considerably enhance the amount of energy released in the disc-corona system. Furthermore, the global solutions of this disc-corona system are obtained numerically. We find that the fraction of the power dissipate"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3289","kind":"arxiv","version":2},"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":"2026-05-18T01:57:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7Y2h8ssW4eAAcHOdWR71CQNcwH13tLkHj7NdWWXanw8J6D42ajkO+2Oi9FUYVKX7fQfSA1eP2cspWub/vFhfBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:25:39.592992Z"},"content_sha256":"9d2cec61696372f247f1b21d548bc441b0d21b7500c4d06346ddb9618d7ed18c","schema_version":"1.0","event_id":"sha256:9d2cec61696372f247f1b21d548bc441b0d21b7500c4d06346ddb9618d7ed18c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CNHX7JU52N5L3RIFHW7WQUWTA7/bundle.json","state_url":"https://pith.science/pith/CNHX7JU52N5L3RIFHW7WQUWTA7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CNHX7JU52N5L3RIFHW7WQUWTA7/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":"2026-06-04T22:25:39Z","links":{"resolver":"https://pith.science/pith/CNHX7JU52N5L3RIFHW7WQUWTA7","bundle":"https://pith.science/pith/CNHX7JU52N5L3RIFHW7WQUWTA7/bundle.json","state":"https://pith.science/pith/CNHX7JU52N5L3RIFHW7WQUWTA7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CNHX7JU52N5L3RIFHW7WQUWTA7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CNHX7JU52N5L3RIFHW7WQUWTA7","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":"a5905aa72ea38030833134ac8d27577dd6810e24289d6ec27d30fbcb08f0111e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-15T16:35:52Z","title_canon_sha256":"1c9f561660e0f62289a89d0aa93f3030fdfaa02a3d3d568176ac68635072c0d5"},"schema_version":"1.0","source":{"id":"1204.3289","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3289","created_at":"2026-05-18T01:57:52Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3289v2","created_at":"2026-05-18T01:57:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3289","created_at":"2026-05-18T01:57:52Z"},{"alias_kind":"pith_short_12","alias_value":"CNHX7JU52N5L","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CNHX7JU52N5L3RIF","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CNHX7JU5","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:9d2cec61696372f247f1b21d548bc441b0d21b7500c4d06346ddb9618d7ed18c","target":"graph","created_at":"2026-05-18T01:57:52Z","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":"We propose a disc-corona model in which a geometrically thin, optically thick disc surrounds a Kerr black hole, and magnetic fields exert a time-steady torque on the inner edge of the accretion disc. The analytical expression of the total gravitational power is derived from the thin-disc dynamics equations by using this new boundary condition. It is shown that the magnetic torque can considerably enhance the amount of energy released in the disc-corona system. Furthermore, the global solutions of this disc-corona system are obtained numerically. We find that the fraction of the power dissipate","authors_text":"Lixin Li, Renyi Ma, Xiaolong Gong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-15T16:35:52Z","title":"A Disc-Corona Model for a Rotating Black Hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3289","kind":"arxiv","version":2},"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:a2f2bc1d65fcc1c304ea304d026c01682cdd96d9e405ed72655bd96ba801fe07","target":"record","created_at":"2026-05-18T01:57:52Z","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":"a5905aa72ea38030833134ac8d27577dd6810e24289d6ec27d30fbcb08f0111e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-15T16:35:52Z","title_canon_sha256":"1c9f561660e0f62289a89d0aa93f3030fdfaa02a3d3d568176ac68635072c0d5"},"schema_version":"1.0","source":{"id":"1204.3289","kind":"arxiv","version":2}},"canonical_sha256":"134f7fa69dd37abdc5053dbf6852d307ef0ef4d34bc5c97c4e3c1ac39dba7a83","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"134f7fa69dd37abdc5053dbf6852d307ef0ef4d34bc5c97c4e3c1ac39dba7a83","first_computed_at":"2026-05-18T01:57:52.390401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:52.390401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xN6DDG5xveLVa51JtJbCxh+HtWNvZbPPvpIoncBBF1R8SCe1xe6UzqxsNRdF2ne+G8b32saLTY6qpvY7gql7Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:52.390773Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.3289","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a2f2bc1d65fcc1c304ea304d026c01682cdd96d9e405ed72655bd96ba801fe07","sha256:9d2cec61696372f247f1b21d548bc441b0d21b7500c4d06346ddb9618d7ed18c"],"state_sha256":"85a3bb5a31d799eb813782c106b273f93d09f4c90f9c43743b4a6c523342b505"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VXuMzDgSkOQEXGzPjG3ZrWYb3Iz3iYOz1Iroip3rzqNA5b2K9i8anWMYt9LiCWsMGu0Ydu6EttHltk8SnMzLAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T22:25:39.596557Z","bundle_sha256":"826c15eaeb4dba8081ac527546cf5dd9ddf43bbdf009644c541dbd43c36c5fc1"}}