{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:DW3IVH2VMBS7YO6SUTS3U5TE6C","short_pith_number":"pith:DW3IVH2V","canonical_record":{"source":{"id":"1611.03654","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-11-11T10:55:55Z","cross_cats_sorted":[],"title_canon_sha256":"e46090d21a44cefcc567fd6d7181f6427099ceb67758384234293767cd339a9a","abstract_canon_sha256":"352ab64933d6c31f8167ea37a67c825d62dc628f00846eadf7c8fe687afa53b6"},"schema_version":"1.0"},"canonical_sha256":"1db68a9f556065fc3bd2a4e5ba7664f0a5b13cdcafb53ee01eb3860a556781d7","source":{"kind":"arxiv","id":"1611.03654","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03654","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03654v1","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03654","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"pith_short_12","alias_value":"DW3IVH2VMBS7","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"pith_short_16","alias_value":"DW3IVH2VMBS7YO6S","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"pith_short_8","alias_value":"DW3IVH2V","created_at":"2026-07-05T07:22:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:DW3IVH2VMBS7YO6SUTS3U5TE6C","target":"record","payload":{"canonical_record":{"source":{"id":"1611.03654","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-11-11T10:55:55Z","cross_cats_sorted":[],"title_canon_sha256":"e46090d21a44cefcc567fd6d7181f6427099ceb67758384234293767cd339a9a","abstract_canon_sha256":"352ab64933d6c31f8167ea37a67c825d62dc628f00846eadf7c8fe687afa53b6"},"schema_version":"1.0"},"canonical_sha256":"1db68a9f556065fc3bd2a4e5ba7664f0a5b13cdcafb53ee01eb3860a556781d7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:22:48.629627Z","signature_b64":"3ovOEQeUzFArijpNZ4W0Qt/MOqRqcg4YOgprIDJXOfoGOJ2+6BaU2eT2OsfpMc3AoviFZAaGHbL7z7Uytf2mDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1db68a9f556065fc3bd2a4e5ba7664f0a5b13cdcafb53ee01eb3860a556781d7","last_reissued_at":"2026-07-05T07:22:48.629043Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:22:48.629043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.03654","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":"2026-07-05T07:22:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SuUxVfT6sxQOQbJVlPwAdghYUCuwdNzOztFmnln58YKkmmav/6RbzY3kdVFGmSEIzGh4SAde9aU+t74f906dBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:39:57.995231Z"},"content_sha256":"27d714e8bd0eae9a1a8107213cde66a9c013a818e386ea6258830fff59d1602e","schema_version":"1.0","event_id":"sha256:27d714e8bd0eae9a1a8107213cde66a9c013a818e386ea6258830fff59d1602e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:DW3IVH2VMBS7YO6SUTS3U5TE6C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On regular rotating black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Francesc Fayos, Ramon Torres","submitted_at":"2016-11-11T10:55:55Z","abstract_excerpt":"Different proposals for regular rotating black hole spacetimes have appeared recently in the literature. However, a rigorous analysis and proof of the regularity of this kind of spacetimes is still lacking. In this note we analyze rotating Kerr-like black hole spacetimes and find the necessary and sufficient conditions for the regularity of all their second order scalar invariants polynomial in the Riemann tensor. We also show that the regularity is linked to a violation of the weak energy conditions around the core of the rotating black hole."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03654","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/1611.03654/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":"2026-07-05T07:22:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r/G0UA0Akt5Yxh1f/UaAJTwtkCzBccu9SM89iTf2xQrFFN1lJdgNi6iMGF+MyDUHgMhszh+Qj5PdR3NJeuC4CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:39:57.995863Z"},"content_sha256":"d8ec9d56c58bb4eb17333071a3f432a72a7441c3c0aac9e1c9019810744e252e","schema_version":"1.0","event_id":"sha256:d8ec9d56c58bb4eb17333071a3f432a72a7441c3c0aac9e1c9019810744e252e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C/bundle.json","state_url":"https://pith.science/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C/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":"2026-08-15T06:39:57Z","links":{"resolver":"https://pith.science/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C","bundle":"https://pith.science/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C/bundle.json","state":"https://pith.science/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DW3IVH2VMBS7YO6SUTS3U5TE6C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DW3IVH2VMBS7YO6SUTS3U5TE6C","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":"352ab64933d6c31f8167ea37a67c825d62dc628f00846eadf7c8fe687afa53b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-11-11T10:55:55Z","title_canon_sha256":"e46090d21a44cefcc567fd6d7181f6427099ceb67758384234293767cd339a9a"},"schema_version":"1.0","source":{"id":"1611.03654","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03654","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03654v1","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03654","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"pith_short_12","alias_value":"DW3IVH2VMBS7","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"pith_short_16","alias_value":"DW3IVH2VMBS7YO6S","created_at":"2026-07-05T07:22:48Z"},{"alias_kind":"pith_short_8","alias_value":"DW3IVH2V","created_at":"2026-07-05T07:22:48Z"}],"graph_snapshots":[{"event_id":"sha256:d8ec9d56c58bb4eb17333071a3f432a72a7441c3c0aac9e1c9019810744e252e","target":"graph","created_at":"2026-07-05T07:22:48Z","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/1611.03654/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Different proposals for regular rotating black hole spacetimes have appeared recently in the literature. However, a rigorous analysis and proof of the regularity of this kind of spacetimes is still lacking. In this note we analyze rotating Kerr-like black hole spacetimes and find the necessary and sufficient conditions for the regularity of all their second order scalar invariants polynomial in the Riemann tensor. We also show that the regularity is linked to a violation of the weak energy conditions around the core of the rotating black hole.","authors_text":"Francesc Fayos, Ramon Torres","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-11-11T10:55:55Z","title":"On regular rotating black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03654","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":"sha256:27d714e8bd0eae9a1a8107213cde66a9c013a818e386ea6258830fff59d1602e","target":"record","created_at":"2026-07-05T07:22:48Z","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":"352ab64933d6c31f8167ea37a67c825d62dc628f00846eadf7c8fe687afa53b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-11-11T10:55:55Z","title_canon_sha256":"e46090d21a44cefcc567fd6d7181f6427099ceb67758384234293767cd339a9a"},"schema_version":"1.0","source":{"id":"1611.03654","kind":"arxiv","version":1}},"canonical_sha256":"1db68a9f556065fc3bd2a4e5ba7664f0a5b13cdcafb53ee01eb3860a556781d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1db68a9f556065fc3bd2a4e5ba7664f0a5b13cdcafb53ee01eb3860a556781d7","first_computed_at":"2026-07-05T07:22:48.629043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:22:48.629043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3ovOEQeUzFArijpNZ4W0Qt/MOqRqcg4YOgprIDJXOfoGOJ2+6BaU2eT2OsfpMc3AoviFZAaGHbL7z7Uytf2mDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:22:48.629627Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.03654","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27d714e8bd0eae9a1a8107213cde66a9c013a818e386ea6258830fff59d1602e","sha256:d8ec9d56c58bb4eb17333071a3f432a72a7441c3c0aac9e1c9019810744e252e"],"state_sha256":"d46f396036ed72a39e71db3428687f36b8098312144f4f6a9bfd23ca3e3127ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NjDbqJPoRyavdCp9I8MdDFNCD+7UG1VaH4quP1yu5yFSrUSG+ShRGwAnHnuX5/NKjclNJV8JagNr+t7UI6pgCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T06:39:58.001878Z","bundle_sha256":"8932db9129422e4e4e06475c358f33c6534b727d06d87ddd345a5c86a8bd9b58"}}