{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JB4JYAX5QBHANDPTWP5KWG3SB6","short_pith_number":"pith:JB4JYAX5","canonical_record":{"source":{"id":"1409.0587","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-02T01:39:27Z","cross_cats_sorted":[],"title_canon_sha256":"445cf8f36e2dcabdbe6e53125fb88b2452b75644ed7fd7faebd8d2e78d50186e","abstract_canon_sha256":"dc497baaca94ae37e8e19aaabfb64092b20432df0c538408bb9ca4196ef0d16e"},"schema_version":"1.0"},"canonical_sha256":"48789c02fd804e068df3b3faab1b720fb39c33e433774ff371e349c2790633bb","source":{"kind":"arxiv","id":"1409.0587","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.0587","created_at":"2026-05-18T01:42:10Z"},{"alias_kind":"arxiv_version","alias_value":"1409.0587v1","created_at":"2026-05-18T01:42:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.0587","created_at":"2026-05-18T01:42:10Z"},{"alias_kind":"pith_short_12","alias_value":"JB4JYAX5QBHA","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JB4JYAX5QBHANDPT","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JB4JYAX5","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JB4JYAX5QBHANDPTWP5KWG3SB6","target":"record","payload":{"canonical_record":{"source":{"id":"1409.0587","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-02T01:39:27Z","cross_cats_sorted":[],"title_canon_sha256":"445cf8f36e2dcabdbe6e53125fb88b2452b75644ed7fd7faebd8d2e78d50186e","abstract_canon_sha256":"dc497baaca94ae37e8e19aaabfb64092b20432df0c538408bb9ca4196ef0d16e"},"schema_version":"1.0"},"canonical_sha256":"48789c02fd804e068df3b3faab1b720fb39c33e433774ff371e349c2790633bb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:10.990583Z","signature_b64":"2lOOjWkLV8g6sffRRbK34NfvflIL3+Unl+SbisOZGRBN3ES+WRZ9vcLRDKSNjmjhXkNAjcQfPxXPh8PfWg52Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48789c02fd804e068df3b3faab1b720fb39c33e433774ff371e349c2790633bb","last_reissued_at":"2026-05-18T01:42:10.989890Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:10.989890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.0587","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":"2026-05-18T01:42:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S1NMTD8wX+cxtietL3AEMUYyKXByv8Wcg6Acrn7Sshl84tvju2DJTEpT6eCeieUeu34IQMgWpih8hQMMR8gmBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:45:25.162124Z"},"content_sha256":"058a6ef9e8ff50d398848d1e7ac20ebbed8ec5527cc3a4dfc6f05891760503db","schema_version":"1.0","event_id":"sha256:058a6ef9e8ff50d398848d1e7ac20ebbed8ec5527cc3a4dfc6f05891760503db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JB4JYAX5QBHANDPTWP5KWG3SB6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical atomic clocks with suppressed black body radiation shift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Alexander Kozlov, Victor Flambaum, Vladimir Dzuba","submitted_at":"2014-09-02T01:39:27Z","abstract_excerpt":"We study a wide range of neutral atoms and ions suitable for ultra-precise atomic optical clocks with naturally suppressed black body radiation shift of clock transition frequency. Calculations show that scalar polarizabilities of clock states cancel each other for at least one order of magnitude for considered systems. Results for calculations of frequencies, quadrupole moments of the states, clock transition amplitudes and natural widths of upper clock states are presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.0587","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":"2026-05-18T01:42:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"scxcVPP9+wUP1EAytD+eec9OxNdwUPFNVy1Va0TxQaKx2E4FG0wWILQ8+75ZYCM5Luuku89i/V36II00ngDaAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:45:25.162489Z"},"content_sha256":"1cabcaa861e4c064050456e9ababe517397b13bfd59a667d252dd81409010c97","schema_version":"1.0","event_id":"sha256:1cabcaa861e4c064050456e9ababe517397b13bfd59a667d252dd81409010c97"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JB4JYAX5QBHANDPTWP5KWG3SB6/bundle.json","state_url":"https://pith.science/pith/JB4JYAX5QBHANDPTWP5KWG3SB6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JB4JYAX5QBHANDPTWP5KWG3SB6/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":"2026-06-01T13:45:25Z","links":{"resolver":"https://pith.science/pith/JB4JYAX5QBHANDPTWP5KWG3SB6","bundle":"https://pith.science/pith/JB4JYAX5QBHANDPTWP5KWG3SB6/bundle.json","state":"https://pith.science/pith/JB4JYAX5QBHANDPTWP5KWG3SB6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JB4JYAX5QBHANDPTWP5KWG3SB6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JB4JYAX5QBHANDPTWP5KWG3SB6","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":"dc497baaca94ae37e8e19aaabfb64092b20432df0c538408bb9ca4196ef0d16e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-02T01:39:27Z","title_canon_sha256":"445cf8f36e2dcabdbe6e53125fb88b2452b75644ed7fd7faebd8d2e78d50186e"},"schema_version":"1.0","source":{"id":"1409.0587","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.0587","created_at":"2026-05-18T01:42:10Z"},{"alias_kind":"arxiv_version","alias_value":"1409.0587v1","created_at":"2026-05-18T01:42:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.0587","created_at":"2026-05-18T01:42:10Z"},{"alias_kind":"pith_short_12","alias_value":"JB4JYAX5QBHA","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JB4JYAX5QBHANDPT","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JB4JYAX5","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:1cabcaa861e4c064050456e9ababe517397b13bfd59a667d252dd81409010c97","target":"graph","created_at":"2026-05-18T01:42:10Z","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 study a wide range of neutral atoms and ions suitable for ultra-precise atomic optical clocks with naturally suppressed black body radiation shift of clock transition frequency. Calculations show that scalar polarizabilities of clock states cancel each other for at least one order of magnitude for considered systems. Results for calculations of frequencies, quadrupole moments of the states, clock transition amplitudes and natural widths of upper clock states are presented.","authors_text":"Alexander Kozlov, Victor Flambaum, Vladimir Dzuba","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-02T01:39:27Z","title":"Optical atomic clocks with suppressed black body radiation shift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.0587","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":"sha256:058a6ef9e8ff50d398848d1e7ac20ebbed8ec5527cc3a4dfc6f05891760503db","target":"record","created_at":"2026-05-18T01:42:10Z","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":"dc497baaca94ae37e8e19aaabfb64092b20432df0c538408bb9ca4196ef0d16e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-02T01:39:27Z","title_canon_sha256":"445cf8f36e2dcabdbe6e53125fb88b2452b75644ed7fd7faebd8d2e78d50186e"},"schema_version":"1.0","source":{"id":"1409.0587","kind":"arxiv","version":1}},"canonical_sha256":"48789c02fd804e068df3b3faab1b720fb39c33e433774ff371e349c2790633bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48789c02fd804e068df3b3faab1b720fb39c33e433774ff371e349c2790633bb","first_computed_at":"2026-05-18T01:42:10.989890Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:10.989890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2lOOjWkLV8g6sffRRbK34NfvflIL3+Unl+SbisOZGRBN3ES+WRZ9vcLRDKSNjmjhXkNAjcQfPxXPh8PfWg52Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:10.990583Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.0587","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:058a6ef9e8ff50d398848d1e7ac20ebbed8ec5527cc3a4dfc6f05891760503db","sha256:1cabcaa861e4c064050456e9ababe517397b13bfd59a667d252dd81409010c97"],"state_sha256":"7220855b26ead3b61d253fd4bfd84233a19df89785dd62c8cb2cfff6a1af3db7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ffGPea5NX8CAj/PP+ZA/xPw1SOmuXk2sgygRsjLJIhuZlUK9f660pOKyyoKEzULBwlxDESFKk2LOBVWjwH8oDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T13:45:25.164430Z","bundle_sha256":"718181fe9280d33ba2d1f50d3e1b5ec1f6d3ff6c32c9f6f6f13c748da91b4f23"}}