{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:SDXVMIM5YEOI5DZWBLDW3SAYVN","short_pith_number":"pith:SDXVMIM5","canonical_record":{"source":{"id":"2010.15244","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-10-24T17:37:35Z","cross_cats_sorted":["physics.app-ph","physics.optics","quant-ph"],"title_canon_sha256":"79a59f41ecff55fc13634c404d53c7ec614b1460486534639f2053736533b0e0","abstract_canon_sha256":"ebecf6a5139b19b1d0d94a1e7fedb01ab92bfc8033cb01c2dbf928965c5e9a98"},"schema_version":"1.0"},"canonical_sha256":"90ef56219dc11c8e8f360ac76dc818ab4966e7b514ba21b4bf9ea4f2133c5664","source":{"kind":"arxiv","id":"2010.15244","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.15244","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"2010.15244v3","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.15244","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"SDXVMIM5YEOI","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"pith_short_16","alias_value":"SDXVMIM5YEOI5DZW","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"pith_short_8","alias_value":"SDXVMIM5","created_at":"2026-07-05T01:48:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:SDXVMIM5YEOI5DZWBLDW3SAYVN","target":"record","payload":{"canonical_record":{"source":{"id":"2010.15244","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-10-24T17:37:35Z","cross_cats_sorted":["physics.app-ph","physics.optics","quant-ph"],"title_canon_sha256":"79a59f41ecff55fc13634c404d53c7ec614b1460486534639f2053736533b0e0","abstract_canon_sha256":"ebecf6a5139b19b1d0d94a1e7fedb01ab92bfc8033cb01c2dbf928965c5e9a98"},"schema_version":"1.0"},"canonical_sha256":"90ef56219dc11c8e8f360ac76dc818ab4966e7b514ba21b4bf9ea4f2133c5664","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:48:14.273256Z","signature_b64":"FAnsf2TfYsVtOYc98f7E8tiqCPeyl+huYIwerV1UQleSuqamt0sti+rlfSJXL2qfKFxD44YvDNvAdO5++hkSDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90ef56219dc11c8e8f360ac76dc818ab4966e7b514ba21b4bf9ea4f2133c5664","last_reissued_at":"2026-07-05T01:48:14.272777Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:48:14.272777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.15244","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:48:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y4zwVWKrGBudANpv4UikaJn8YZJvGtbZgIcl2FhredoIWeBdJUMlJvB19Ve8jbzw/o8lnd5OvZxIQ8cb1RuLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T16:52:19.664022Z"},"content_sha256":"156ebee67ad6a891f30633b8bd52f91c31bf65b371172f7c7b3ff6862365f92c","schema_version":"1.0","event_id":"sha256:156ebee67ad6a891f30633b8bd52f91c31bf65b371172f7c7b3ff6862365f92c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:SDXVMIM5YEOI5DZWBLDW3SAYVN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Compact transportable 171Yb+ single-ion optical fully automated clock with 4.9E-16 relative instability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph","physics.optics","quant-ph"],"primary_cat":"physics.ins-det","authors_text":"Alexander Borisenko, Alexei Taichenachev, Anton Tausenev, Ilya Semerikov, Ilya Zalivako, Ivan Sherstov, Konstantin Makarenko, Ksenia Khabarova, Mikhail Axenov, Nikolay Kolachevsky, Sergey Bagaev, Sergey Chepurov, Timur Abbasov","submitted_at":"2020-10-24T17:37:35Z","abstract_excerpt":"The paper describes the results achieved in the development of the compact transportable fully automated optical clock based on a single 171Yb+ ion in a radiofrequency (RF) quadrupole trap. The resulted measurements demonstrated the 4.9E-16 output RF signal relative instability on 1000 s integration time with 298.1 kg weight, 0.921 volume, and 2.766 kW input power consumption of the device. A transformation of the ultrastable optical signal into the RF range was performed via the optical frequency comb with a supercontinuum fiber laser generator. The transformation was conducted without loss o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.15244","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.15244/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:48:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QuGfN+QmcW5Ptz31feUXC3U6xBIMq5Vu6/n+tBNft4/K9GMk3yuj1Q07UZa/5/2F54OtMoMq4lnp3mrWfd9jAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T16:52:19.665098Z"},"content_sha256":"59b5e32e0231ffdac11094482636293bdc6daef5e77b3f79efc2f2e69400f734","schema_version":"1.0","event_id":"sha256:59b5e32e0231ffdac11094482636293bdc6daef5e77b3f79efc2f2e69400f734"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN/bundle.json","state_url":"https://pith.science/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN/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":"2026-08-04T16:52:19Z","links":{"resolver":"https://pith.science/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN","bundle":"https://pith.science/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN/bundle.json","state":"https://pith.science/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SDXVMIM5YEOI5DZWBLDW3SAYVN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SDXVMIM5YEOI5DZWBLDW3SAYVN","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":"ebecf6a5139b19b1d0d94a1e7fedb01ab92bfc8033cb01c2dbf928965c5e9a98","cross_cats_sorted":["physics.app-ph","physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-10-24T17:37:35Z","title_canon_sha256":"79a59f41ecff55fc13634c404d53c7ec614b1460486534639f2053736533b0e0"},"schema_version":"1.0","source":{"id":"2010.15244","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.15244","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"2010.15244v3","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.15244","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"SDXVMIM5YEOI","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"pith_short_16","alias_value":"SDXVMIM5YEOI5DZW","created_at":"2026-07-05T01:48:14Z"},{"alias_kind":"pith_short_8","alias_value":"SDXVMIM5","created_at":"2026-07-05T01:48:14Z"}],"graph_snapshots":[{"event_id":"sha256:59b5e32e0231ffdac11094482636293bdc6daef5e77b3f79efc2f2e69400f734","target":"graph","created_at":"2026-07-05T01:48:14Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2010.15244/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The paper describes the results achieved in the development of the compact transportable fully automated optical clock based on a single 171Yb+ ion in a radiofrequency (RF) quadrupole trap. The resulted measurements demonstrated the 4.9E-16 output RF signal relative instability on 1000 s integration time with 298.1 kg weight, 0.921 volume, and 2.766 kW input power consumption of the device. A transformation of the ultrastable optical signal into the RF range was performed via the optical frequency comb with a supercontinuum fiber laser generator. The transformation was conducted without loss o","authors_text":"Alexander Borisenko, Alexei Taichenachev, Anton Tausenev, Ilya Semerikov, Ilya Zalivako, Ivan Sherstov, Konstantin Makarenko, Ksenia Khabarova, Mikhail Axenov, Nikolay Kolachevsky, Sergey Bagaev, Sergey Chepurov, Timur Abbasov","cross_cats":["physics.app-ph","physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-10-24T17:37:35Z","title":"Compact transportable 171Yb+ single-ion optical fully automated clock with 4.9E-16 relative instability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.15244","kind":"arxiv","version":3},"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":"sha256:156ebee67ad6a891f30633b8bd52f91c31bf65b371172f7c7b3ff6862365f92c","target":"record","created_at":"2026-07-05T01:48:14Z","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":"ebecf6a5139b19b1d0d94a1e7fedb01ab92bfc8033cb01c2dbf928965c5e9a98","cross_cats_sorted":["physics.app-ph","physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-10-24T17:37:35Z","title_canon_sha256":"79a59f41ecff55fc13634c404d53c7ec614b1460486534639f2053736533b0e0"},"schema_version":"1.0","source":{"id":"2010.15244","kind":"arxiv","version":3}},"canonical_sha256":"90ef56219dc11c8e8f360ac76dc818ab4966e7b514ba21b4bf9ea4f2133c5664","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90ef56219dc11c8e8f360ac76dc818ab4966e7b514ba21b4bf9ea4f2133c5664","first_computed_at":"2026-07-05T01:48:14.272777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:48:14.272777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FAnsf2TfYsVtOYc98f7E8tiqCPeyl+huYIwerV1UQleSuqamt0sti+rlfSJXL2qfKFxD44YvDNvAdO5++hkSDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:48:14.273256Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.15244","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:156ebee67ad6a891f30633b8bd52f91c31bf65b371172f7c7b3ff6862365f92c","sha256:59b5e32e0231ffdac11094482636293bdc6daef5e77b3f79efc2f2e69400f734"],"state_sha256":"4914d7fcbbc86247bc3cf540ca3450e1173a325271dd1556c5734d3965aec8fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8B65MirjSzSW/6FO1NhAZwnabM8hJ7Epl5Vsxm/uVGmPwfpKfmc0wxd02j/WODQ5FW9CoM5kMLEPCWzdA0OXDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T16:52:19.674489Z","bundle_sha256":"561dfdf6c5b10f300958f797c37ab3872f46d236bedb41e4067a5bfd0a3fb159"}}