{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LZDF3NEIMSYYPFCWTIAIB7DO3V","short_pith_number":"pith:LZDF3NEI","canonical_record":{"source":{"id":"2404.07357","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2024-04-10T21:26:24Z","cross_cats_sorted":[],"title_canon_sha256":"8fb575f6bab00230807220d95c9a144b800152f4db16ac1f039cb6ea011f627b","abstract_canon_sha256":"1be29d96d437f9507c22fcec08c237cbd2cb90d97c99c869d2caad6c4eb9649a"},"schema_version":"1.0"},"canonical_sha256":"5e465db48864b18794569a0080fc6edd5fb39147824c6cdc2da8d933acd74779","source":{"kind":"arxiv","id":"2404.07357","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07357","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07357v2","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07357","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"LZDF3NEIMSYY","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"pith_short_16","alias_value":"LZDF3NEIMSYYPFCW","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"pith_short_8","alias_value":"LZDF3NEI","created_at":"2026-07-05T09:23:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LZDF3NEIMSYYPFCWTIAIB7DO3V","target":"record","payload":{"canonical_record":{"source":{"id":"2404.07357","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2024-04-10T21:26:24Z","cross_cats_sorted":[],"title_canon_sha256":"8fb575f6bab00230807220d95c9a144b800152f4db16ac1f039cb6ea011f627b","abstract_canon_sha256":"1be29d96d437f9507c22fcec08c237cbd2cb90d97c99c869d2caad6c4eb9649a"},"schema_version":"1.0"},"canonical_sha256":"5e465db48864b18794569a0080fc6edd5fb39147824c6cdc2da8d933acd74779","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:23:04.780425Z","signature_b64":"qfCti6/pvnRRk3CRbhgl9uDkG2UGlQAtiVfwlb/zMHRwHePlf3/bd8gCiADrWaibyhX5C3SJlD0WQ7MQzXW+BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e465db48864b18794569a0080fc6edd5fb39147824c6cdc2da8d933acd74779","last_reissued_at":"2026-07-05T09:23:04.780008Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:23:04.780008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.07357","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":"2026-07-05T09:23:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iZP+COg5SjU3FedPeC1qYDH1quDOisVPlgkG7pwJH+49pcixsLayD17t5UMCfNKp+VTGHEJt3mdIyrBaQC9aCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T04:38:51.923506Z"},"content_sha256":"286b3914859c5472b8c6231b1400e6e489280b03944fd089d309f045c60741bf","schema_version":"1.0","event_id":"sha256:286b3914859c5472b8c6231b1400e6e489280b03944fd089d309f045c60741bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LZDF3NEIMSYYPFCWTIAIB7DO3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the nature of inner light-rings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Francesco Di Filippo","submitted_at":"2024-04-10T21:26:24Z","abstract_excerpt":"Non-singular horizonless ultracompact objects provide a simple resolution to the black holes singularity problem. It has been shown that, if these objects are compact enough to exhibit the presence of the light-ring required to mimic the phenomenology of general relativity black holes, they must have at least one additional light-ring. The stability of the inner light ring has been proven under the assumption of Einstein equations and the validity of the null energy condition. Since this can have important repercussions on the instability of a horizonless ultracompact object and the existence "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07357","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.07357/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":"2026-07-05T09:23:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7DI03KuAWbJk5zBS9iN0V7OhV0HC/HBrfz1kEg6RY1uyea9U4+GnuDChU6Jzgh92Mij0NqxLxDeifb3NONryBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T04:38:51.924049Z"},"content_sha256":"358b0454d3d294a9b38f554a90daaf2f34e0a007acb183d19a9b327fdea5167c","schema_version":"1.0","event_id":"sha256:358b0454d3d294a9b38f554a90daaf2f34e0a007acb183d19a9b327fdea5167c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V/bundle.json","state_url":"https://pith.science/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V/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":"2026-08-05T04:38:51Z","links":{"resolver":"https://pith.science/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V","bundle":"https://pith.science/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V/bundle.json","state":"https://pith.science/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LZDF3NEIMSYYPFCWTIAIB7DO3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LZDF3NEIMSYYPFCWTIAIB7DO3V","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":"1be29d96d437f9507c22fcec08c237cbd2cb90d97c99c869d2caad6c4eb9649a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2024-04-10T21:26:24Z","title_canon_sha256":"8fb575f6bab00230807220d95c9a144b800152f4db16ac1f039cb6ea011f627b"},"schema_version":"1.0","source":{"id":"2404.07357","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07357","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07357v2","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07357","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"LZDF3NEIMSYY","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"pith_short_16","alias_value":"LZDF3NEIMSYYPFCW","created_at":"2026-07-05T09:23:04Z"},{"alias_kind":"pith_short_8","alias_value":"LZDF3NEI","created_at":"2026-07-05T09:23:04Z"}],"graph_snapshots":[{"event_id":"sha256:358b0454d3d294a9b38f554a90daaf2f34e0a007acb183d19a9b327fdea5167c","target":"graph","created_at":"2026-07-05T09:23:04Z","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/2404.07357/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-singular horizonless ultracompact objects provide a simple resolution to the black holes singularity problem. It has been shown that, if these objects are compact enough to exhibit the presence of the light-ring required to mimic the phenomenology of general relativity black holes, they must have at least one additional light-ring. The stability of the inner light ring has been proven under the assumption of Einstein equations and the validity of the null energy condition. Since this can have important repercussions on the instability of a horizonless ultracompact object and the existence ","authors_text":"Francesco Di Filippo","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2024-04-10T21:26:24Z","title":"On the nature of inner light-rings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07357","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":"sha256:286b3914859c5472b8c6231b1400e6e489280b03944fd089d309f045c60741bf","target":"record","created_at":"2026-07-05T09:23:04Z","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":"1be29d96d437f9507c22fcec08c237cbd2cb90d97c99c869d2caad6c4eb9649a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2024-04-10T21:26:24Z","title_canon_sha256":"8fb575f6bab00230807220d95c9a144b800152f4db16ac1f039cb6ea011f627b"},"schema_version":"1.0","source":{"id":"2404.07357","kind":"arxiv","version":2}},"canonical_sha256":"5e465db48864b18794569a0080fc6edd5fb39147824c6cdc2da8d933acd74779","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e465db48864b18794569a0080fc6edd5fb39147824c6cdc2da8d933acd74779","first_computed_at":"2026-07-05T09:23:04.780008Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:23:04.780008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qfCti6/pvnRRk3CRbhgl9uDkG2UGlQAtiVfwlb/zMHRwHePlf3/bd8gCiADrWaibyhX5C3SJlD0WQ7MQzXW+BA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:23:04.780425Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.07357","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:286b3914859c5472b8c6231b1400e6e489280b03944fd089d309f045c60741bf","sha256:358b0454d3d294a9b38f554a90daaf2f34e0a007acb183d19a9b327fdea5167c"],"state_sha256":"29e62e156e38d02b100b9517e24a1b1efee60571f92ef4d7ece9fa5100d114d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ro8T/XicKXi5lCKkgOH3l/adZXsp7tXiIDyzMRmZp8D6KPNBYUAikG2cLz+QaJFqMJQpR6+pc5O9IEcjCEiFCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T04:38:51.927671Z","bundle_sha256":"f9c8793ec6e72b5ad06d463dca6acea255e8e865602e0f7a3cf06a5db7b05b01"}}