{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZQOMV2Z5TA7MZ42QHQSTI3FS7K","short_pith_number":"pith:ZQOMV2Z5","canonical_record":{"source":{"id":"1406.6477","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-06-25T07:05:02Z","cross_cats_sorted":[],"title_canon_sha256":"2ac3d917064df9768ca0270f6e56231ec08dd1f1759f347632210df232879dfd","abstract_canon_sha256":"537a75c2e5a7350cf809af6a66fb92fa7cfe0371137fef7b5a85d9ddefb1d68f"},"schema_version":"1.0"},"canonical_sha256":"cc1ccaeb3d983eccf3503c25346cb2fab327c543228b74cd777b1f59551ac69b","source":{"kind":"arxiv","id":"1406.6477","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6477","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6477v1","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6477","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZQOMV2Z5TA7M","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZQOMV2Z5TA7MZ42Q","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZQOMV2Z5","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZQOMV2Z5TA7MZ42QHQSTI3FS7K","target":"record","payload":{"canonical_record":{"source":{"id":"1406.6477","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-06-25T07:05:02Z","cross_cats_sorted":[],"title_canon_sha256":"2ac3d917064df9768ca0270f6e56231ec08dd1f1759f347632210df232879dfd","abstract_canon_sha256":"537a75c2e5a7350cf809af6a66fb92fa7cfe0371137fef7b5a85d9ddefb1d68f"},"schema_version":"1.0"},"canonical_sha256":"cc1ccaeb3d983eccf3503c25346cb2fab327c543228b74cd777b1f59551ac69b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:02.781607Z","signature_b64":"63uuOeGeRHUkXzQfblC2kWxyoL+vLwAqE4yX6iifnMDh/1khgv2mgAIylqnxicW0S6e6ZbhCFsmdSKWM1JssDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc1ccaeb3d983eccf3503c25346cb2fab327c543228b74cd777b1f59551ac69b","last_reissued_at":"2026-05-18T02:49:02.781113Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:02.781113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.6477","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":"2026-05-18T02:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C07fR5Yp/9tPZfwK9pirKG67Pb+aKNZDjCT+i95X20P7IqJwRBKTwo2scHAAhXl+cUrUi3VMGELqCdNrwlHTCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:22:58.309378Z"},"content_sha256":"794d0b8edfc512df787ce4012ee7fb25fe416795b9632afca24c5bcdd87a760d","schema_version":"1.0","event_id":"sha256:794d0b8edfc512df787ce4012ee7fb25fe416795b9632afca24c5bcdd87a760d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZQOMV2Z5TA7MZ42QHQSTI3FS7K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct mapping of nuclear shell effects in the heaviest elements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"C. Droese, Ch. E. D\\\"ullmann, C. Scheidenberger, C. Weber, D. Ackermann, D. Nesterenko, D. Rodr\\'iguez, E. Haettner, E. Minaya Ramirez, F. Herfurth, F.P. He{\\ss}berger, G. Marx, J. Ketelaer, K. Blaum, L. Schweikhard, M. Block, M. Dworschak, M. Eibach, M. Mazzocco, P.G. Thirolf, S. Eliseev, S. Hofmann, W.R. Pla{\\ss}, Yu.N. Novikov","submitted_at":"2014-06-25T07:05:02Z","abstract_excerpt":"Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an \"island of stability\" of superheavy elements. The predicted center at proton number $Z=114,120$, or $126$ and neutron number $N=184$ has been substantiated by the recent synthesis of new elements up to $Z=118$. However the location of the center and the extension of the island of stability remain vague. High-precision mass spectrometry allows the direct measurement of nuclear binding energies and thus the determination of the strength of shell effects. Here, we present such measurements for nobelium and law"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6477","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":"2026-05-18T02:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uKDoNeaGb8N6aI32saYiTLc1xQ0ed+F/7DhKUec9K6oDvN0pQ8BXzBS8JjbkbY/8+V1h97CCuPUauxGPdFAcBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:22:58.310040Z"},"content_sha256":"5867dbcb15a29acafdd1fc4e222414e677cf437e428f05812d4a6902decd052d","schema_version":"1.0","event_id":"sha256:5867dbcb15a29acafdd1fc4e222414e677cf437e428f05812d4a6902decd052d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K/bundle.json","state_url":"https://pith.science/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K/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":"2026-05-31T12:22:58Z","links":{"resolver":"https://pith.science/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K","bundle":"https://pith.science/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K/bundle.json","state":"https://pith.science/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZQOMV2Z5TA7MZ42QHQSTI3FS7K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZQOMV2Z5TA7MZ42QHQSTI3FS7K","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":"537a75c2e5a7350cf809af6a66fb92fa7cfe0371137fef7b5a85d9ddefb1d68f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-06-25T07:05:02Z","title_canon_sha256":"2ac3d917064df9768ca0270f6e56231ec08dd1f1759f347632210df232879dfd"},"schema_version":"1.0","source":{"id":"1406.6477","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6477","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6477v1","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6477","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZQOMV2Z5TA7M","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZQOMV2Z5TA7MZ42Q","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZQOMV2Z5","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:5867dbcb15a29acafdd1fc4e222414e677cf437e428f05812d4a6902decd052d","target":"graph","created_at":"2026-05-18T02:49:02Z","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":"Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an \"island of stability\" of superheavy elements. The predicted center at proton number $Z=114,120$, or $126$ and neutron number $N=184$ has been substantiated by the recent synthesis of new elements up to $Z=118$. However the location of the center and the extension of the island of stability remain vague. High-precision mass spectrometry allows the direct measurement of nuclear binding energies and thus the determination of the strength of shell effects. Here, we present such measurements for nobelium and law","authors_text":"C. Droese, Ch. E. D\\\"ullmann, C. Scheidenberger, C. Weber, D. Ackermann, D. Nesterenko, D. Rodr\\'iguez, E. Haettner, E. Minaya Ramirez, F. Herfurth, F.P. He{\\ss}berger, G. Marx, J. Ketelaer, K. Blaum, L. Schweikhard, M. Block, M. Dworschak, M. Eibach, M. Mazzocco, P.G. Thirolf, S. Eliseev, S. Hofmann, W.R. Pla{\\ss}, Yu.N. Novikov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-06-25T07:05:02Z","title":"Direct mapping of nuclear shell effects in the heaviest elements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6477","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":"sha256:794d0b8edfc512df787ce4012ee7fb25fe416795b9632afca24c5bcdd87a760d","target":"record","created_at":"2026-05-18T02:49:02Z","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":"537a75c2e5a7350cf809af6a66fb92fa7cfe0371137fef7b5a85d9ddefb1d68f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-06-25T07:05:02Z","title_canon_sha256":"2ac3d917064df9768ca0270f6e56231ec08dd1f1759f347632210df232879dfd"},"schema_version":"1.0","source":{"id":"1406.6477","kind":"arxiv","version":1}},"canonical_sha256":"cc1ccaeb3d983eccf3503c25346cb2fab327c543228b74cd777b1f59551ac69b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc1ccaeb3d983eccf3503c25346cb2fab327c543228b74cd777b1f59551ac69b","first_computed_at":"2026-05-18T02:49:02.781113Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:49:02.781113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"63uuOeGeRHUkXzQfblC2kWxyoL+vLwAqE4yX6iifnMDh/1khgv2mgAIylqnxicW0S6e6ZbhCFsmdSKWM1JssDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:49:02.781607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.6477","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:794d0b8edfc512df787ce4012ee7fb25fe416795b9632afca24c5bcdd87a760d","sha256:5867dbcb15a29acafdd1fc4e222414e677cf437e428f05812d4a6902decd052d"],"state_sha256":"e6d06900c3b242ab13b961fbaceeacb2118ad173c6d189474c5fd2e85fc433f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"poG+ZtnZvOJ6AtowT2jY3TVXMZE4GnaeKobkzz9r6jVY/OMBRUd8CmnB1ZlpTAQ7zgLdDA9iZIwW25PQTTYDDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:22:58.313268Z","bundle_sha256":"cea5551e7ae27c5d55d1050bac21d038f2c0ea14769293d9e72cdfb4376c79ce"}}