{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WEGXNHAU4DLZ4J32TVFZ2BHP3C","short_pith_number":"pith:WEGXNHAU","canonical_record":{"source":{"id":"1510.01510","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T10:05:36Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"470a6f7559373c91867e0b8f7f493f78c4fffeb9062f3f5ca45dabb95d7b6530","abstract_canon_sha256":"75148ac9bb80f3c4d920ca230c34d0b8d6880f5fde6510bd8fb3fd02c9c8cc23"},"schema_version":"1.0"},"canonical_sha256":"b10d769c14e0d79e277a9d4b9d04efd8aaae66911f8fbd94a5d9510761462d18","source":{"kind":"arxiv","id":"1510.01510","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01510","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01510v1","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01510","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"pith_short_12","alias_value":"WEGXNHAU4DLZ","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WEGXNHAU4DLZ4J32","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WEGXNHAU","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WEGXNHAU4DLZ4J32TVFZ2BHP3C","target":"record","payload":{"canonical_record":{"source":{"id":"1510.01510","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T10:05:36Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"470a6f7559373c91867e0b8f7f493f78c4fffeb9062f3f5ca45dabb95d7b6530","abstract_canon_sha256":"75148ac9bb80f3c4d920ca230c34d0b8d6880f5fde6510bd8fb3fd02c9c8cc23"},"schema_version":"1.0"},"canonical_sha256":"b10d769c14e0d79e277a9d4b9d04efd8aaae66911f8fbd94a5d9510761462d18","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:00.755885Z","signature_b64":"5KqHYGLodpfNinwhQSU7qGE8tgkrS5fcGhzT4HZta9mwjiJOSBg3hnn0JQqFS/yrqP2oiRqOentbY3IsSTOlDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b10d769c14e0d79e277a9d4b9d04efd8aaae66911f8fbd94a5d9510761462d18","last_reissued_at":"2026-05-18T01:30:00.755255Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:00.755255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.01510","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":"2026-05-18T01:30:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XvlEg1VYh0goAH6LZI4c6FzkavOpAFA9te/JsiwwQKXRTmoeACLYjoRw8XDjMBWMMk91r0f/jChMnZqyI+rlAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:11:58.203451Z"},"content_sha256":"0b5fda96a1d7d4804ddbe69d79f7ae2976b44d341884a3b67ccf58d110e9904b","schema_version":"1.0","event_id":"sha256:0b5fda96a1d7d4804ddbe69d79f7ae2976b44d341884a3b67ccf58d110e9904b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WEGXNHAU4DLZ4J32TVFZ2BHP3C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mass measurement of 56Sc reveals a small A=56 odd-even mass staggering, implying a cooler accreted neutron star crust","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Estrad\\'e, A. Gade, A.L. Cole, B.A. Brown, C. Langer, D. Bazin, D.J. Morrissey, D. Shapira, F. Montes, H. Chung, H. Schatz, J. Browne, J.F. Carpino, J. Pereira, J.R. Winkelbauer, J. Schatz, J. Stevens, J. Yurkon, K. Smith, K. Wimmer, M. Famiano, M. Mato\\v{s}, M. Scott, O. Tarasov, R.G.T. Zegers, R.H. Cyburt, S. Ahn, S. George, S. Towers, W. Mittig, W. Tan, Z. Meisel","submitted_at":"2015-10-06T10:05:36Z","abstract_excerpt":"We present the mass excesses of 52-57Sc, obtained from recent time-of-flight nuclear mass measurements at the National Superconducting Cyclotron Laboratory at Michigan State University. The masses of 56Sc and 57Sc were determined for the first time with atomic mass excesses of -24.85(59)(+0 -54) MeV and -21.0(1.3) MeV, respectively, where the asymmetric uncertainty for 56Sc was included due to possible contamination from a long-lived isomer. The 56Sc mass indicates a small odd-even mass staggering in the A = 56 mass-chain towards the neutron drip line, significantly deviating from trends predi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01510","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":"2026-05-18T01:30:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S9A8XiJ+abLjtAkraiU7hokWCgMCoWl17zoLQTY2h7Y2ucx6hAyjPjexpAMfIqUpLBcg/aEDRBBZIrXmcX0+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:11:58.203849Z"},"content_sha256":"bb354e9ae6c80426834fff6730a129e2405dad3759d0f0eb97373f5f440ac919","schema_version":"1.0","event_id":"sha256:bb354e9ae6c80426834fff6730a129e2405dad3759d0f0eb97373f5f440ac919"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C/bundle.json","state_url":"https://pith.science/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C/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":"2026-06-05T14:11:58Z","links":{"resolver":"https://pith.science/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C","bundle":"https://pith.science/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C/bundle.json","state":"https://pith.science/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WEGXNHAU4DLZ4J32TVFZ2BHP3C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WEGXNHAU4DLZ4J32TVFZ2BHP3C","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":"75148ac9bb80f3c4d920ca230c34d0b8d6880f5fde6510bd8fb3fd02c9c8cc23","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T10:05:36Z","title_canon_sha256":"470a6f7559373c91867e0b8f7f493f78c4fffeb9062f3f5ca45dabb95d7b6530"},"schema_version":"1.0","source":{"id":"1510.01510","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01510","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01510v1","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01510","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"pith_short_12","alias_value":"WEGXNHAU4DLZ","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WEGXNHAU4DLZ4J32","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WEGXNHAU","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:bb354e9ae6c80426834fff6730a129e2405dad3759d0f0eb97373f5f440ac919","target":"graph","created_at":"2026-05-18T01:30:00Z","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 present the mass excesses of 52-57Sc, obtained from recent time-of-flight nuclear mass measurements at the National Superconducting Cyclotron Laboratory at Michigan State University. The masses of 56Sc and 57Sc were determined for the first time with atomic mass excesses of -24.85(59)(+0 -54) MeV and -21.0(1.3) MeV, respectively, where the asymmetric uncertainty for 56Sc was included due to possible contamination from a long-lived isomer. The 56Sc mass indicates a small odd-even mass staggering in the A = 56 mass-chain towards the neutron drip line, significantly deviating from trends predi","authors_text":"A. Estrad\\'e, A. Gade, A.L. Cole, B.A. Brown, C. Langer, D. Bazin, D.J. Morrissey, D. Shapira, F. Montes, H. Chung, H. Schatz, J. Browne, J.F. Carpino, J. Pereira, J.R. Winkelbauer, J. Schatz, J. Stevens, J. Yurkon, K. Smith, K. Wimmer, M. Famiano, M. Mato\\v{s}, M. Scott, O. Tarasov, R.G.T. Zegers, R.H. Cyburt, S. Ahn, S. George, S. Towers, W. Mittig, W. Tan, Z. Meisel","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T10:05:36Z","title":"Mass measurement of 56Sc reveals a small A=56 odd-even mass staggering, implying a cooler accreted neutron star crust"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01510","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":"sha256:0b5fda96a1d7d4804ddbe69d79f7ae2976b44d341884a3b67ccf58d110e9904b","target":"record","created_at":"2026-05-18T01:30:00Z","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":"75148ac9bb80f3c4d920ca230c34d0b8d6880f5fde6510bd8fb3fd02c9c8cc23","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T10:05:36Z","title_canon_sha256":"470a6f7559373c91867e0b8f7f493f78c4fffeb9062f3f5ca45dabb95d7b6530"},"schema_version":"1.0","source":{"id":"1510.01510","kind":"arxiv","version":1}},"canonical_sha256":"b10d769c14e0d79e277a9d4b9d04efd8aaae66911f8fbd94a5d9510761462d18","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b10d769c14e0d79e277a9d4b9d04efd8aaae66911f8fbd94a5d9510761462d18","first_computed_at":"2026-05-18T01:30:00.755255Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:00.755255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5KqHYGLodpfNinwhQSU7qGE8tgkrS5fcGhzT4HZta9mwjiJOSBg3hnn0JQqFS/yrqP2oiRqOentbY3IsSTOlDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:00.755885Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.01510","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b5fda96a1d7d4804ddbe69d79f7ae2976b44d341884a3b67ccf58d110e9904b","sha256:bb354e9ae6c80426834fff6730a129e2405dad3759d0f0eb97373f5f440ac919"],"state_sha256":"cf7a866f94c62a875155d119ddec08bf3f404927efcbe99bc2ca8f9ede003be4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TLBfKDhaGH8862zFha4+Z6JGUQiJ6ySYgwgaZ9DusQBf1YJ68o5Nr+mKgJiJuW2sJ/9l5PT4ACUVmWpu5Sc8CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T14:11:58.206440Z","bundle_sha256":"78378ed42ec3e9c93c3bf72e5bebb80291f97170fce5d402bd27ee22aebfdede"}}