{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MCFL7VIDZPAZDP4SRTTIYSIFS3","short_pith_number":"pith:MCFL7VID","canonical_record":{"source":{"id":"1904.01347","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-04-02T11:35:48Z","cross_cats_sorted":["physics.data-an"],"title_canon_sha256":"6a9c1abade5115d3dbecb62353a49227a547318c448fa5ff4c70d398b4b0dd4c","abstract_canon_sha256":"6a86f259c0a071a5db74f8047d4fb4c3ae155c5c9822d4a275656bea9dc8ebd3"},"schema_version":"1.0"},"canonical_sha256":"608abfd503cbc191bf928ce68c490596f2f639a60be620793ad56c445dfbbbbd","source":{"kind":"arxiv","id":"1904.01347","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.01347","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"arxiv_version","alias_value":"1904.01347v1","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01347","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"pith_short_12","alias_value":"MCFL7VIDZPAZ","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"MCFL7VIDZPAZDP4S","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"MCFL7VID","created_at":"2026-05-18T12:33:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MCFL7VIDZPAZDP4SRTTIYSIFS3","target":"record","payload":{"canonical_record":{"source":{"id":"1904.01347","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-04-02T11:35:48Z","cross_cats_sorted":["physics.data-an"],"title_canon_sha256":"6a9c1abade5115d3dbecb62353a49227a547318c448fa5ff4c70d398b4b0dd4c","abstract_canon_sha256":"6a86f259c0a071a5db74f8047d4fb4c3ae155c5c9822d4a275656bea9dc8ebd3"},"schema_version":"1.0"},"canonical_sha256":"608abfd503cbc191bf928ce68c490596f2f639a60be620793ad56c445dfbbbbd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:34.983168Z","signature_b64":"0I4Q/YJUUeuah/PlHVNV+p5vfgHXMcnrMA+7wG11kfQ3RwP3reMBcrELSA6tUYlL1Ob4MPRWvnQ/Va7OHCRXDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"608abfd503cbc191bf928ce68c490596f2f639a60be620793ad56c445dfbbbbd","last_reissued_at":"2026-05-17T23:49:34.981849Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:34.981849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.01347","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":"2026-05-17T23:49:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aI3dzCCOOUMhLHSKAPVCY6IyABCcvtD9n/H6fEzZs6Xi6zLip6LB8OCmouAPj86Q4RTipP0HSOwf3soOMMh3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:49:10.968990Z"},"content_sha256":"536e264c1f3bb2c9617b5df61af3fb4180f8e2872ad34132897cd6c165ffeefd","schema_version":"1.0","event_id":"sha256:536e264c1f3bb2c9617b5df61af3fb4180f8e2872ad34132897cd6c165ffeefd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MCFL7VIDZPAZDP4SRTTIYSIFS3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-neutron transfer reactions and quantum-chaos measure of nuclear spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.data-an"],"primary_cat":"nucl-th","authors_text":"A.G. Magner, A.I. Levon","submitted_at":"2019-04-02T11:35:48Z","abstract_excerpt":"A new statistical interpretation of the nuclear collective states is suggested and applied recently in rare earths and actinide nuclei by the two-neutron transfer reactions in terms of the nearest neighbor-spacing distributions (NNSDs). Experimental NNSDs were obtained by using the complete and pure sequences of the collective states through an unfolding procedure. The two-neutron transfer reactions allow to obtain such a sequence of the collective states that meets the requirements for a statistical analysis. Their theoretical analysis is based on the linear approximation of a repulsion level"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01347","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":""},"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":"2026-05-17T23:49:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ToreQFpqKVcPcYwfrYUs8B4UjrkoV0r2rIR51nos4A9Gbh+4sUBLED8nz3eexrbryMUz9vkHMJsFICGQjXtbAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:49:10.969341Z"},"content_sha256":"4fd1a6ddd9ba9e3ba9cc63e97c83f53b44337864c106488abdf8866da0fe67ad","schema_version":"1.0","event_id":"sha256:4fd1a6ddd9ba9e3ba9cc63e97c83f53b44337864c106488abdf8866da0fe67ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3/bundle.json","state_url":"https://pith.science/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3/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":"2026-06-02T19:49:10Z","links":{"resolver":"https://pith.science/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3","bundle":"https://pith.science/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3/bundle.json","state":"https://pith.science/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MCFL7VIDZPAZDP4SRTTIYSIFS3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MCFL7VIDZPAZDP4SRTTIYSIFS3","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":"6a86f259c0a071a5db74f8047d4fb4c3ae155c5c9822d4a275656bea9dc8ebd3","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-04-02T11:35:48Z","title_canon_sha256":"6a9c1abade5115d3dbecb62353a49227a547318c448fa5ff4c70d398b4b0dd4c"},"schema_version":"1.0","source":{"id":"1904.01347","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.01347","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"arxiv_version","alias_value":"1904.01347v1","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01347","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"pith_short_12","alias_value":"MCFL7VIDZPAZ","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"MCFL7VIDZPAZDP4S","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"MCFL7VID","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:4fd1a6ddd9ba9e3ba9cc63e97c83f53b44337864c106488abdf8866da0fe67ad","target":"graph","created_at":"2026-05-17T23:49:34Z","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":"A new statistical interpretation of the nuclear collective states is suggested and applied recently in rare earths and actinide nuclei by the two-neutron transfer reactions in terms of the nearest neighbor-spacing distributions (NNSDs). Experimental NNSDs were obtained by using the complete and pure sequences of the collective states through an unfolding procedure. The two-neutron transfer reactions allow to obtain such a sequence of the collective states that meets the requirements for a statistical analysis. Their theoretical analysis is based on the linear approximation of a repulsion level","authors_text":"A.G. Magner, A.I. Levon","cross_cats":["physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-04-02T11:35:48Z","title":"Two-neutron transfer reactions and quantum-chaos measure of nuclear spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01347","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":"sha256:536e264c1f3bb2c9617b5df61af3fb4180f8e2872ad34132897cd6c165ffeefd","target":"record","created_at":"2026-05-17T23:49:34Z","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":"6a86f259c0a071a5db74f8047d4fb4c3ae155c5c9822d4a275656bea9dc8ebd3","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-04-02T11:35:48Z","title_canon_sha256":"6a9c1abade5115d3dbecb62353a49227a547318c448fa5ff4c70d398b4b0dd4c"},"schema_version":"1.0","source":{"id":"1904.01347","kind":"arxiv","version":1}},"canonical_sha256":"608abfd503cbc191bf928ce68c490596f2f639a60be620793ad56c445dfbbbbd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"608abfd503cbc191bf928ce68c490596f2f639a60be620793ad56c445dfbbbbd","first_computed_at":"2026-05-17T23:49:34.981849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:34.981849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0I4Q/YJUUeuah/PlHVNV+p5vfgHXMcnrMA+7wG11kfQ3RwP3reMBcrELSA6tUYlL1Ob4MPRWvnQ/Va7OHCRXDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:34.983168Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.01347","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:536e264c1f3bb2c9617b5df61af3fb4180f8e2872ad34132897cd6c165ffeefd","sha256:4fd1a6ddd9ba9e3ba9cc63e97c83f53b44337864c106488abdf8866da0fe67ad"],"state_sha256":"7548c00b6e8aca63bde1d4dfb46ba433a1685adaf3cb43a4e41c27c32dafb8e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Am4sK/Es03da/yAIFLfnb99t6ga0Kh4udrKtRqSNlobPbtzQyol8Swu6Axs5kOSC8qzenv79uA+PTsUhOlWvAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T19:49:10.971228Z","bundle_sha256":"513e301303c6a800480a03b58d4e44bd22c46b32858ddf58c470f7af87314feb"}}