{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:BS6EBKSZUNCGXWPTNZLPE5PB4B","short_pith_number":"pith:BS6EBKSZ","canonical_record":{"source":{"id":"1408.3856","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-08-17T20:19:08Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"db55ca24aa8339c52ca3b14c71554513b20dc9155ea439eaa70781aa1dc0825e","abstract_canon_sha256":"2239ffa4f54bdfbf7e4abe834f9a9bb206109d62f87f03be372c830b524ab253"},"schema_version":"1.0"},"canonical_sha256":"0cbc40aa59a3446bd9f36e56f275e1e06a8e28803500849e61d35300f5c12d98","source":{"kind":"arxiv","id":"1408.3856","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3856","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3856v2","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3856","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"pith_short_12","alias_value":"BS6EBKSZUNCG","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"BS6EBKSZUNCGXWPT","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"BS6EBKSZ","created_at":"2026-05-18T12:28:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:BS6EBKSZUNCGXWPTNZLPE5PB4B","target":"record","payload":{"canonical_record":{"source":{"id":"1408.3856","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-08-17T20:19:08Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"db55ca24aa8339c52ca3b14c71554513b20dc9155ea439eaa70781aa1dc0825e","abstract_canon_sha256":"2239ffa4f54bdfbf7e4abe834f9a9bb206109d62f87f03be372c830b524ab253"},"schema_version":"1.0"},"canonical_sha256":"0cbc40aa59a3446bd9f36e56f275e1e06a8e28803500849e61d35300f5c12d98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:18.183130Z","signature_b64":"L0G4CqspJeeGz2kLMxepgVfEX0iGEy6WotO0kd2hMa15+4lk0JP5+Rxozns/N+U1eqOIbg2EKFPUCMcZ/vjNAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cbc40aa59a3446bd9f36e56f275e1e06a8e28803500849e61d35300f5c12d98","last_reissued_at":"2026-05-18T01:42:18.182445Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:18.182445Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.3856","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":"2026-05-18T01:42:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g40YqkA/czXb0NBbBDGoHIo61NFjuht+aLk8oElLg0/rKXBDQ1PjcYW/psfLLvGrScaF2mjtjyQOX+udtAvACA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:23:33.525747Z"},"content_sha256":"f8e33a84fed6f1b8dc3467bda0e4815bfeb0e667e4ca673398b7aea428f7c91f","schema_version":"1.0","event_id":"sha256:f8e33a84fed6f1b8dc3467bda0e4815bfeb0e667e4ca673398b7aea428f7c91f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:BS6EBKSZUNCGXWPTNZLPE5PB4B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extreme neutron stars from Extended Theories of Gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-th"],"primary_cat":"gr-qc","authors_text":"Artyom V. Astashenok, Salvatore Capozziello, Sergei D. Odintsov","submitted_at":"2014-08-17T20:19:08Z","abstract_excerpt":"We discuss neutron stars with strong magnetic mean fields in the framework of Extended Theories of Gravity. In particular, we take into account models derived from $f(R)$ and $f(\\cal G)$ extensions of General Relativity where functions of the Ricci curvature invariant $R$ and the Gauss-Bonnet invariant ${\\cal G}$ are respectively considered. Dense matter in magnetic mean field, generated by magnetic properties of particles, is described by assuming a model with three meson fields and baryons octet. As result, the considerable increasing of maximal mass of neutron stars can be achieved by cubic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3856","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":"2026-05-18T01:42:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GXM8UNnpMIj6JjqQ7oWt/muUBSd4/FsOEUosPVDW9maZaUa5sIh3sBOmTrA1NJQQhYot5Sjj/M+SELtz814cBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:23:33.526439Z"},"content_sha256":"c6181d186efb0208b95c539c662e2730b8903895218e09af10764816e07b01c3","schema_version":"1.0","event_id":"sha256:c6181d186efb0208b95c539c662e2730b8903895218e09af10764816e07b01c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B/bundle.json","state_url":"https://pith.science/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B/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":"2026-05-25T17:23:33Z","links":{"resolver":"https://pith.science/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B","bundle":"https://pith.science/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B/bundle.json","state":"https://pith.science/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BS6EBKSZUNCGXWPTNZLPE5PB4B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:BS6EBKSZUNCGXWPTNZLPE5PB4B","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":"2239ffa4f54bdfbf7e4abe834f9a9bb206109d62f87f03be372c830b524ab253","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-08-17T20:19:08Z","title_canon_sha256":"db55ca24aa8339c52ca3b14c71554513b20dc9155ea439eaa70781aa1dc0825e"},"schema_version":"1.0","source":{"id":"1408.3856","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3856","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3856v2","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3856","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"pith_short_12","alias_value":"BS6EBKSZUNCG","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"BS6EBKSZUNCGXWPT","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"BS6EBKSZ","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:c6181d186efb0208b95c539c662e2730b8903895218e09af10764816e07b01c3","target":"graph","created_at":"2026-05-18T01:42:18Z","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"},"paper":{"abstract_excerpt":"We discuss neutron stars with strong magnetic mean fields in the framework of Extended Theories of Gravity. In particular, we take into account models derived from $f(R)$ and $f(\\cal G)$ extensions of General Relativity where functions of the Ricci curvature invariant $R$ and the Gauss-Bonnet invariant ${\\cal G}$ are respectively considered. Dense matter in magnetic mean field, generated by magnetic properties of particles, is described by assuming a model with three meson fields and baryons octet. As result, the considerable increasing of maximal mass of neutron stars can be achieved by cubic","authors_text":"Artyom V. Astashenok, Salvatore Capozziello, Sergei D. Odintsov","cross_cats":["astro-ph.HE","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-08-17T20:19:08Z","title":"Extreme neutron stars from Extended Theories of Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3856","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:f8e33a84fed6f1b8dc3467bda0e4815bfeb0e667e4ca673398b7aea428f7c91f","target":"record","created_at":"2026-05-18T01:42:18Z","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":"2239ffa4f54bdfbf7e4abe834f9a9bb206109d62f87f03be372c830b524ab253","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-08-17T20:19:08Z","title_canon_sha256":"db55ca24aa8339c52ca3b14c71554513b20dc9155ea439eaa70781aa1dc0825e"},"schema_version":"1.0","source":{"id":"1408.3856","kind":"arxiv","version":2}},"canonical_sha256":"0cbc40aa59a3446bd9f36e56f275e1e06a8e28803500849e61d35300f5c12d98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cbc40aa59a3446bd9f36e56f275e1e06a8e28803500849e61d35300f5c12d98","first_computed_at":"2026-05-18T01:42:18.182445Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:18.182445Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L0G4CqspJeeGz2kLMxepgVfEX0iGEy6WotO0kd2hMa15+4lk0JP5+Rxozns/N+U1eqOIbg2EKFPUCMcZ/vjNAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:18.183130Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.3856","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8e33a84fed6f1b8dc3467bda0e4815bfeb0e667e4ca673398b7aea428f7c91f","sha256:c6181d186efb0208b95c539c662e2730b8903895218e09af10764816e07b01c3"],"state_sha256":"60d0832405d32b4f93eae25d251b9e1a13b397a6412c199a2ffe475795b62157"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pOd1Jtkqe+cMtCMP6e2jRsuXpEKOpU+9Kq05yxF3ntJDvIMhlWI4C0EM9Yz+M39RXQ8xI6W2klAjJvEs+MX8Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:23:33.530006Z","bundle_sha256":"eec52776b735ac1830758da2b1992d9e662f802a696eb61fd06964081caff495"}}