{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:REZQF5PQL3BHCXXTWY5XOVUQR3","short_pith_number":"pith:REZQF5PQ","canonical_record":{"source":{"id":"1005.4602","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-05-25T15:13:32Z","cross_cats_sorted":[],"title_canon_sha256":"2f06a1f5344114dde3979d3a67f5154eac6c0c0fcbe63d1e9aa350d5385a4c45","abstract_canon_sha256":"92f2b9c7a9ad4a11fee009df31a16cb9830deb3002f669999e2076b538404aa4"},"schema_version":"1.0"},"canonical_sha256":"893302f5f05ec2715ef3b63b7756908ee75de7641cf5ff7442a48283e4dd137c","source":{"kind":"arxiv","id":"1005.4602","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.4602","created_at":"2026-05-18T02:33:23Z"},{"alias_kind":"arxiv_version","alias_value":"1005.4602v1","created_at":"2026-05-18T02:33:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.4602","created_at":"2026-05-18T02:33:23Z"},{"alias_kind":"pith_short_12","alias_value":"REZQF5PQL3BH","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"REZQF5PQL3BHCXXT","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"REZQF5PQ","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:REZQF5PQL3BHCXXTWY5XOVUQR3","target":"record","payload":{"canonical_record":{"source":{"id":"1005.4602","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-05-25T15:13:32Z","cross_cats_sorted":[],"title_canon_sha256":"2f06a1f5344114dde3979d3a67f5154eac6c0c0fcbe63d1e9aa350d5385a4c45","abstract_canon_sha256":"92f2b9c7a9ad4a11fee009df31a16cb9830deb3002f669999e2076b538404aa4"},"schema_version":"1.0"},"canonical_sha256":"893302f5f05ec2715ef3b63b7756908ee75de7641cf5ff7442a48283e4dd137c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:33:23.996634Z","signature_b64":"zNrLz9c5CTt0MRg8BQLjTlcUoCIioH2/srhpaSfzrR3mcxXWUXtTADPjTDb0+ZFJy00LOL3BWl8EBaySIVvKDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"893302f5f05ec2715ef3b63b7756908ee75de7641cf5ff7442a48283e4dd137c","last_reissued_at":"2026-05-18T02:33:23.996270Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:33:23.996270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.4602","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":"2026-05-18T02:33:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HmG/y0PsxZo6Dit4Y3rEgsy5wI6H5FJjg/v21p3Vq7iy4u8LJrULRKBSUlNuzqHU7/Nq5X1uhVponiJUKhCSCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:38:08.209593Z"},"content_sha256":"916fdbd5f0fd88a3acdf18db709a685dda9389305ee4d2e6bcca9a669550b006","schema_version":"1.0","event_id":"sha256:916fdbd5f0fd88a3acdf18db709a685dda9389305ee4d2e6bcca9a669550b006"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:REZQF5PQL3BHCXXTWY5XOVUQR3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pairing-excitation versus intruder states in 68Ni and 90Zr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"D. Pauwels, J.L. Wood, K. Heyde, M. Huyse, P. Van Duppen, R. Julin","submitted_at":"2010-05-25T15:13:32Z","abstract_excerpt":"A discussion on the nature of the 0+ states in 68Ni (Z=28, N=40) is presented and a comparison is made with its valence counterpart 90Zr (Z=40, N=50). Evidence is given for a 0+ proton intruder state at only ~2.2 MeV excitation energy in 68Ni, while the analogous neutron intruder states in 90Zr reside at 4126 keV and 5441 keV. The application of a shell-model description of 0+ intruder states reveals that many pair-scattered neutrons across N=40 have to be involved to explain the low excitation energy of the proton-intruder configuration in 68Ni."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.4602","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":"2026-05-18T02:33:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+6h6yvmD7uKz1ZzmFs5d3l+/wS4qvC76jBH3Dh5EooUdSxr8oaZ/UefFGirQM4WQ/EfyJef1ELDsvSIdN7lpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:38:08.210278Z"},"content_sha256":"7920a6710c603b05b88b7634adf6952b51dab2ec0d3ca48ed56405b2540517e5","schema_version":"1.0","event_id":"sha256:7920a6710c603b05b88b7634adf6952b51dab2ec0d3ca48ed56405b2540517e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/REZQF5PQL3BHCXXTWY5XOVUQR3/bundle.json","state_url":"https://pith.science/pith/REZQF5PQL3BHCXXTWY5XOVUQR3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/REZQF5PQL3BHCXXTWY5XOVUQR3/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":"2026-05-26T08:38:08Z","links":{"resolver":"https://pith.science/pith/REZQF5PQL3BHCXXTWY5XOVUQR3","bundle":"https://pith.science/pith/REZQF5PQL3BHCXXTWY5XOVUQR3/bundle.json","state":"https://pith.science/pith/REZQF5PQL3BHCXXTWY5XOVUQR3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/REZQF5PQL3BHCXXTWY5XOVUQR3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:REZQF5PQL3BHCXXTWY5XOVUQR3","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":"92f2b9c7a9ad4a11fee009df31a16cb9830deb3002f669999e2076b538404aa4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-05-25T15:13:32Z","title_canon_sha256":"2f06a1f5344114dde3979d3a67f5154eac6c0c0fcbe63d1e9aa350d5385a4c45"},"schema_version":"1.0","source":{"id":"1005.4602","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.4602","created_at":"2026-05-18T02:33:23Z"},{"alias_kind":"arxiv_version","alias_value":"1005.4602v1","created_at":"2026-05-18T02:33:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.4602","created_at":"2026-05-18T02:33:23Z"},{"alias_kind":"pith_short_12","alias_value":"REZQF5PQL3BH","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"REZQF5PQL3BHCXXT","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"REZQF5PQ","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:7920a6710c603b05b88b7634adf6952b51dab2ec0d3ca48ed56405b2540517e5","target":"graph","created_at":"2026-05-18T02:33:23Z","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 discussion on the nature of the 0+ states in 68Ni (Z=28, N=40) is presented and a comparison is made with its valence counterpart 90Zr (Z=40, N=50). Evidence is given for a 0+ proton intruder state at only ~2.2 MeV excitation energy in 68Ni, while the analogous neutron intruder states in 90Zr reside at 4126 keV and 5441 keV. The application of a shell-model description of 0+ intruder states reveals that many pair-scattered neutrons across N=40 have to be involved to explain the low excitation energy of the proton-intruder configuration in 68Ni.","authors_text":"D. Pauwels, J.L. Wood, K. Heyde, M. Huyse, P. Van Duppen, R. Julin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-05-25T15:13:32Z","title":"Pairing-excitation versus intruder states in 68Ni and 90Zr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.4602","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":"sha256:916fdbd5f0fd88a3acdf18db709a685dda9389305ee4d2e6bcca9a669550b006","target":"record","created_at":"2026-05-18T02:33:23Z","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":"92f2b9c7a9ad4a11fee009df31a16cb9830deb3002f669999e2076b538404aa4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-05-25T15:13:32Z","title_canon_sha256":"2f06a1f5344114dde3979d3a67f5154eac6c0c0fcbe63d1e9aa350d5385a4c45"},"schema_version":"1.0","source":{"id":"1005.4602","kind":"arxiv","version":1}},"canonical_sha256":"893302f5f05ec2715ef3b63b7756908ee75de7641cf5ff7442a48283e4dd137c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"893302f5f05ec2715ef3b63b7756908ee75de7641cf5ff7442a48283e4dd137c","first_computed_at":"2026-05-18T02:33:23.996270Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:33:23.996270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zNrLz9c5CTt0MRg8BQLjTlcUoCIioH2/srhpaSfzrR3mcxXWUXtTADPjTDb0+ZFJy00LOL3BWl8EBaySIVvKDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:33:23.996634Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.4602","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:916fdbd5f0fd88a3acdf18db709a685dda9389305ee4d2e6bcca9a669550b006","sha256:7920a6710c603b05b88b7634adf6952b51dab2ec0d3ca48ed56405b2540517e5"],"state_sha256":"49b529e1e71a4c2386eccc307dfe2eb403ecfe948e96f7ba8fb6993ef6d1d1cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O3ExT4YZIDUrrR4Fo2Lr7QBaO/hTw1UGsIzjTzs2hnf0L/nlEfJ+jaVPhxJHsc3v8D5dVhC9pP1czosDOjhcDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T08:38:08.217519Z","bundle_sha256":"5ff813447d5af70e845fcd1066085beb3278cbbfac392135a10828307992eab9"}}