{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:467B2SGEUZ42H5Y73HUCXG2YZV","short_pith_number":"pith:467B2SGE","canonical_record":{"source":{"id":"2008.12143","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-08-25T18:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"3e13bfb8b58e3db1ec6ceb989179236be8c244a15e17bbd5e6d2f89d064a8245","abstract_canon_sha256":"83af33fdc91d90e8777c28c5dc029ce440b5523bcedffaee9377f49fdcf64ba6"},"schema_version":"1.0"},"canonical_sha256":"e7be1d48c4a679a3f71fd9e82b9b58cd66d8d1c8fae226c54d2b2cf68eea749a","source":{"kind":"arxiv","id":"2008.12143","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.12143","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"2008.12143v2","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.12143","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"467B2SGEUZ42","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"pith_short_16","alias_value":"467B2SGEUZ42H5Y7","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"pith_short_8","alias_value":"467B2SGE","created_at":"2026-07-05T04:00:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:467B2SGEUZ42H5Y73HUCXG2YZV","target":"record","payload":{"canonical_record":{"source":{"id":"2008.12143","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-08-25T18:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"3e13bfb8b58e3db1ec6ceb989179236be8c244a15e17bbd5e6d2f89d064a8245","abstract_canon_sha256":"83af33fdc91d90e8777c28c5dc029ce440b5523bcedffaee9377f49fdcf64ba6"},"schema_version":"1.0"},"canonical_sha256":"e7be1d48c4a679a3f71fd9e82b9b58cd66d8d1c8fae226c54d2b2cf68eea749a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:00:48.954491Z","signature_b64":"Mg+Xl6sulbKfbSkTEKyUZ5GKlRbv/5HJWAGkWoghCUj9yeP7AeoehHjlEcvaXrAKvB+UBvInAzgtle+Q4YF3Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7be1d48c4a679a3f71fd9e82b9b58cd66d8d1c8fae226c54d2b2cf68eea749a","last_reissued_at":"2026-07-05T04:00:48.954054Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:00:48.954054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.12143","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":"2026-07-05T04:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bpdAyc8KB8jAM+naeOTZu7a+mQDoVAr3nRWOrIZcxX/pUIQ7AHchSaEMLpNtkri9amRxGDOjj/nA69IWKfYPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T09:13:55.549689Z"},"content_sha256":"58185985aba46bca340f7fd4961d3243356240a70ba7fb9b8a5ba2664b4273d6","schema_version":"1.0","event_id":"sha256:58185985aba46bca340f7fd4961d3243356240a70ba7fb9b8a5ba2664b4273d6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:467B2SGEUZ42H5Y73HUCXG2YZV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black holes and wormholes in $f(R)$ gravity with a kinetic curvature scalar","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Igor V. Fomin, J\\'ulio C. Fabris, Sergey V. Chervon","submitted_at":"2020-08-25T18:40:22Z","abstract_excerpt":"We study the chiral self-gravitating model (CSGM) of a special type in the spherically symmetric static spacetime in Einstein frame. Such CSGM is derived, by virtue of Weyl conformal transformation, from a gravity model in the Jordan frame corresponding to a modified $f(R)$ gravity with a kinetic scalar curvature. We investigate the model using harmonic coordinates and consider a special case of the scaling transformation from the Jordan frame. We find classes of solutions corresponding to a zero potential and we investigate horizons, centers and the asymptotic behavior of the obtained solutio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.12143","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/2008.12143/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":"2026-07-05T04:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A2R/MysqQz3Gea+HSuFkdvvfCTXXNpphHlI0pmVwk5xGjeGoZUPYmX4X4QySFFITEuLlfzQzt2Wt1s2htQmwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T09:13:55.550205Z"},"content_sha256":"fe9e7e896d7cabd41bdf9816fc1fa02a4e3a14a2d3c8c8a351047eac6ed65226","schema_version":"1.0","event_id":"sha256:fe9e7e896d7cabd41bdf9816fc1fa02a4e3a14a2d3c8c8a351047eac6ed65226"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/467B2SGEUZ42H5Y73HUCXG2YZV/bundle.json","state_url":"https://pith.science/pith/467B2SGEUZ42H5Y73HUCXG2YZV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/467B2SGEUZ42H5Y73HUCXG2YZV/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":"2026-08-06T09:13:55Z","links":{"resolver":"https://pith.science/pith/467B2SGEUZ42H5Y73HUCXG2YZV","bundle":"https://pith.science/pith/467B2SGEUZ42H5Y73HUCXG2YZV/bundle.json","state":"https://pith.science/pith/467B2SGEUZ42H5Y73HUCXG2YZV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/467B2SGEUZ42H5Y73HUCXG2YZV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:467B2SGEUZ42H5Y73HUCXG2YZV","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":"83af33fdc91d90e8777c28c5dc029ce440b5523bcedffaee9377f49fdcf64ba6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-08-25T18:40:22Z","title_canon_sha256":"3e13bfb8b58e3db1ec6ceb989179236be8c244a15e17bbd5e6d2f89d064a8245"},"schema_version":"1.0","source":{"id":"2008.12143","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.12143","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"2008.12143v2","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.12143","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"467B2SGEUZ42","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"pith_short_16","alias_value":"467B2SGEUZ42H5Y7","created_at":"2026-07-05T04:00:48Z"},{"alias_kind":"pith_short_8","alias_value":"467B2SGE","created_at":"2026-07-05T04:00:48Z"}],"graph_snapshots":[{"event_id":"sha256:fe9e7e896d7cabd41bdf9816fc1fa02a4e3a14a2d3c8c8a351047eac6ed65226","target":"graph","created_at":"2026-07-05T04:00:48Z","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/2008.12143/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the chiral self-gravitating model (CSGM) of a special type in the spherically symmetric static spacetime in Einstein frame. Such CSGM is derived, by virtue of Weyl conformal transformation, from a gravity model in the Jordan frame corresponding to a modified $f(R)$ gravity with a kinetic scalar curvature. We investigate the model using harmonic coordinates and consider a special case of the scaling transformation from the Jordan frame. We find classes of solutions corresponding to a zero potential and we investigate horizons, centers and the asymptotic behavior of the obtained solutio","authors_text":"Igor V. Fomin, J\\'ulio C. Fabris, Sergey V. Chervon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-08-25T18:40:22Z","title":"Black holes and wormholes in $f(R)$ gravity with a kinetic curvature scalar"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.12143","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":"sha256:58185985aba46bca340f7fd4961d3243356240a70ba7fb9b8a5ba2664b4273d6","target":"record","created_at":"2026-07-05T04:00:48Z","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":"83af33fdc91d90e8777c28c5dc029ce440b5523bcedffaee9377f49fdcf64ba6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-08-25T18:40:22Z","title_canon_sha256":"3e13bfb8b58e3db1ec6ceb989179236be8c244a15e17bbd5e6d2f89d064a8245"},"schema_version":"1.0","source":{"id":"2008.12143","kind":"arxiv","version":2}},"canonical_sha256":"e7be1d48c4a679a3f71fd9e82b9b58cd66d8d1c8fae226c54d2b2cf68eea749a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7be1d48c4a679a3f71fd9e82b9b58cd66d8d1c8fae226c54d2b2cf68eea749a","first_computed_at":"2026-07-05T04:00:48.954054Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:00:48.954054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mg+Xl6sulbKfbSkTEKyUZ5GKlRbv/5HJWAGkWoghCUj9yeP7AeoehHjlEcvaXrAKvB+UBvInAzgtle+Q4YF3Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:00:48.954491Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.12143","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58185985aba46bca340f7fd4961d3243356240a70ba7fb9b8a5ba2664b4273d6","sha256:fe9e7e896d7cabd41bdf9816fc1fa02a4e3a14a2d3c8c8a351047eac6ed65226"],"state_sha256":"0999eb40c19131c52c6a67dc102d0449a5d65f39506e1f4590ffcd3b2eb1b857"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3AuEiVGh2Mj3CKv1peCvqkScf1Lg4dOOWp5AZvnQmw6PGC2DvjqyFnyS2S7bFlWE4a7b023sYMeawnoj6YHBBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T09:13:55.553851Z","bundle_sha256":"4f27cfe5914857d68997205e6561ab4d7afb5b95b171f01beb8ec7ba2ba4eb02"}}