{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OQAYTRZP2X4CCBLKT4ODEXWLTE","short_pith_number":"pith:OQAYTRZP","canonical_record":{"source":{"id":"2511.06017","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-11-08T14:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"8806240e021604d83c1404d181f761b86f7b71c9c02b14785abd5c06656a1128","abstract_canon_sha256":"40e9b9c9815a153767f7007a289d9b6c9c0d2144b460311bd7ae08e66e12e181"},"schema_version":"1.0"},"canonical_sha256":"740189c72fd5f821056a9f1c325ecb9906eef46fd8f1ca6a68247f7f2095462e","source":{"kind":"arxiv","id":"2511.06017","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.06017","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"arxiv_version","alias_value":"2511.06017v3","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.06017","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_12","alias_value":"OQAYTRZP2X4C","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_16","alias_value":"OQAYTRZP2X4CCBLK","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_8","alias_value":"OQAYTRZP","created_at":"2026-05-26T01:03:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OQAYTRZP2X4CCBLKT4ODEXWLTE","target":"record","payload":{"canonical_record":{"source":{"id":"2511.06017","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-11-08T14:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"8806240e021604d83c1404d181f761b86f7b71c9c02b14785abd5c06656a1128","abstract_canon_sha256":"40e9b9c9815a153767f7007a289d9b6c9c0d2144b460311bd7ae08e66e12e181"},"schema_version":"1.0"},"canonical_sha256":"740189c72fd5f821056a9f1c325ecb9906eef46fd8f1ca6a68247f7f2095462e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T01:03:18.500623Z","signature_b64":"iPYfxXPFIm7sPa2rlmQZkv13j6NQfw2G7QxwQWSNc25ufEbpWa5UZ6AB4Y2/IBDu1erdMlmcgVDwrrGJBqqVAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"740189c72fd5f821056a9f1c325ecb9906eef46fd8f1ca6a68247f7f2095462e","last_reissued_at":"2026-05-26T01:03:18.499918Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T01:03:18.499918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2511.06017","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-26T01:03:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hops4o40c+CE/vYLyli3AJRgxJEyaJ99WPuQQn+0po7Kr5U8ZGe3ZCR4pfkGTSRscXaDASpk5oKH4jcRYNQKCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:45:32.889310Z"},"content_sha256":"f907b0cd4b7915b93652f5f486254fc30279142e97cfdc72eda321c9dc63509c","schema_version":"1.0","event_id":"sha256:f907b0cd4b7915b93652f5f486254fc30279142e97cfdc72eda321c9dc63509c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OQAYTRZP2X4CCBLKT4ODEXWLTE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Universal Framework for Horizon-Scale Tests of Gravity with Black Hole Shadows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Di Wu, Wentao Liu, Yang Liu, Yu-Xiao Liu","submitted_at":"2025-11-08T14:09:16Z","abstract_excerpt":"In this Letter, we have developed a numerically efficient framework for evaluating parameters in metric theories of gravity, and applied it to constrain the horizon-scale magnetic field in the Kerr-Bertotti-Robinson (Kerr-BR) spacetime using the latest EHT observations. The method's adaptive ray-tracing strategy achieves near-linear computational efficiency without loss of numerical accuracy. Owing to this efficiency, the framework enables high precision shadow modeling at minimal computational cost and, for the first time, supports statistically robust inference of black hole parameters from "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.06017","kind":"arxiv","version":3},"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/2511.06017/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":"2026-05-26T01:03:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C6eazjyWH2teXWinO2U6V9erVJ+EksbGqFt7hLEjwxKlrhEMEkonTWdGtcrYTLeDRmvnR3f3FL5i0M6+JjmBDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:45:32.890019Z"},"content_sha256":"0033c023f71c690dc09736b00f712494fc36df71954b9d4e5eb750cf135988a2","schema_version":"1.0","event_id":"sha256:0033c023f71c690dc09736b00f712494fc36df71954b9d4e5eb750cf135988a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE/bundle.json","state_url":"https://pith.science/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE/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":"2026-05-29T16:45:32Z","links":{"resolver":"https://pith.science/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE","bundle":"https://pith.science/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE/bundle.json","state":"https://pith.science/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OQAYTRZP2X4CCBLKT4ODEXWLTE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OQAYTRZP2X4CCBLKT4ODEXWLTE","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":"40e9b9c9815a153767f7007a289d9b6c9c0d2144b460311bd7ae08e66e12e181","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-11-08T14:09:16Z","title_canon_sha256":"8806240e021604d83c1404d181f761b86f7b71c9c02b14785abd5c06656a1128"},"schema_version":"1.0","source":{"id":"2511.06017","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.06017","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"arxiv_version","alias_value":"2511.06017v3","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.06017","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_12","alias_value":"OQAYTRZP2X4C","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_16","alias_value":"OQAYTRZP2X4CCBLK","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_8","alias_value":"OQAYTRZP","created_at":"2026-05-26T01:03:18Z"}],"graph_snapshots":[{"event_id":"sha256:0033c023f71c690dc09736b00f712494fc36df71954b9d4e5eb750cf135988a2","target":"graph","created_at":"2026-05-26T01:03:18Z","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/2511.06017/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this Letter, we have developed a numerically efficient framework for evaluating parameters in metric theories of gravity, and applied it to constrain the horizon-scale magnetic field in the Kerr-Bertotti-Robinson (Kerr-BR) spacetime using the latest EHT observations. The method's adaptive ray-tracing strategy achieves near-linear computational efficiency without loss of numerical accuracy. Owing to this efficiency, the framework enables high precision shadow modeling at minimal computational cost and, for the first time, supports statistically robust inference of black hole parameters from ","authors_text":"Di Wu, Wentao Liu, Yang Liu, Yu-Xiao Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-11-08T14:09:16Z","title":"A Universal Framework for Horizon-Scale Tests of Gravity with Black Hole Shadows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.06017","kind":"arxiv","version":3},"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:f907b0cd4b7915b93652f5f486254fc30279142e97cfdc72eda321c9dc63509c","target":"record","created_at":"2026-05-26T01:03:18Z","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":"40e9b9c9815a153767f7007a289d9b6c9c0d2144b460311bd7ae08e66e12e181","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-11-08T14:09:16Z","title_canon_sha256":"8806240e021604d83c1404d181f761b86f7b71c9c02b14785abd5c06656a1128"},"schema_version":"1.0","source":{"id":"2511.06017","kind":"arxiv","version":3}},"canonical_sha256":"740189c72fd5f821056a9f1c325ecb9906eef46fd8f1ca6a68247f7f2095462e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"740189c72fd5f821056a9f1c325ecb9906eef46fd8f1ca6a68247f7f2095462e","first_computed_at":"2026-05-26T01:03:18.499918Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T01:03:18.499918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iPYfxXPFIm7sPa2rlmQZkv13j6NQfw2G7QxwQWSNc25ufEbpWa5UZ6AB4Y2/IBDu1erdMlmcgVDwrrGJBqqVAQ==","signature_status":"signed_v1","signed_at":"2026-05-26T01:03:18.500623Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.06017","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f907b0cd4b7915b93652f5f486254fc30279142e97cfdc72eda321c9dc63509c","sha256:0033c023f71c690dc09736b00f712494fc36df71954b9d4e5eb750cf135988a2"],"state_sha256":"99abfae4de6a6c1993f2ab906bd8815312883e8dae3492d19859af5ea8c6b75c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vgoBU1Dran00285inCUDeNbfDtFelSDBoZ0bbSHtFahDIa1r4zjS1wd5YNadeEwEeA2ozM0onOkdhRt6A/ZADQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T16:45:32.895249Z","bundle_sha256":"bec9e217cbc627114b2a1bea4d00a318711c7edba1e12271d423d7a6b47fe402"}}