{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:KB3DYCEG3U2IR4KUUXULOHUBFB","short_pith_number":"pith:KB3DYCEG","schema_version":"1.0","canonical_sha256":"50763c0886dd3488f154a5e8b71e81285db48fdddf1337bc2311d125bc025fdc","source":{"kind":"arxiv","id":"1705.06580","version":2},"attestation_state":"computed","paper":{"title":"The correlation of co-located hydrogen masers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A.M. Zhang, B. Wang, C.H. Han, H.W. Si, J. Yang, L.J. Wang, T.C. Li, X. Zhu, Y.C. Guo, Z.W. Cai","submitted_at":"2017-05-15T06:44:15Z","abstract_excerpt":"The correlation of co-located hydrogen masers (H-masers) is difficult to measure because their common-mode noise induced by the environment will be cancelled out during the comparison measurement. With the development of fibre-based high-precision time and frequency transfer technique, the correlation of co-located hydrogen masers can be directly measured with the help of remote H-masers. Recently, a fiber-based frequency synchronization network was constructed in the Beijing region by connecting 5 H-masers from 4 institutions. The correlation coefficient of atomic clocks is defined and the co"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1705.06580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-05-15T06:44:15Z","cross_cats_sorted":[],"title_canon_sha256":"613b14851a1b8721bacfaf6dd749f9b741a5a91e2de77d914e3590ac129c7783","abstract_canon_sha256":"78a84cfb7f7a397f60fea1da8bda92866e67ce2aa0259068e387cf8f6c68dc71"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:27.493071Z","signature_b64":"VicbphX+c/v0bv3K8ZK1OvJ9zu8w0tKXxa115satmnbb2CZnHUG/aitGDqzKCOLZrF7S0eNtAOuOEWJ0Zru9BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50763c0886dd3488f154a5e8b71e81285db48fdddf1337bc2311d125bc025fdc","last_reissued_at":"2026-05-18T00:20:27.492405Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:27.492405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The correlation of co-located hydrogen masers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A.M. Zhang, B. Wang, C.H. Han, H.W. Si, J. Yang, L.J. Wang, T.C. Li, X. Zhu, Y.C. Guo, Z.W. Cai","submitted_at":"2017-05-15T06:44:15Z","abstract_excerpt":"The correlation of co-located hydrogen masers (H-masers) is difficult to measure because their common-mode noise induced by the environment will be cancelled out during the comparison measurement. With the development of fibre-based high-precision time and frequency transfer technique, the correlation of co-located hydrogen masers can be directly measured with the help of remote H-masers. Recently, a fiber-based frequency synchronization network was constructed in the Beijing region by connecting 5 H-masers from 4 institutions. The correlation coefficient of atomic clocks is defined and the co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06580","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1705.06580","created_at":"2026-05-18T00:20:27.492504+00:00"},{"alias_kind":"arxiv_version","alias_value":"1705.06580v2","created_at":"2026-05-18T00:20:27.492504+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.06580","created_at":"2026-05-18T00:20:27.492504+00:00"},{"alias_kind":"pith_short_12","alias_value":"KB3DYCEG3U2I","created_at":"2026-05-18T12:31:24.725408+00:00"},{"alias_kind":"pith_short_16","alias_value":"KB3DYCEG3U2IR4KU","created_at":"2026-05-18T12:31:24.725408+00:00"},{"alias_kind":"pith_short_8","alias_value":"KB3DYCEG","created_at":"2026-05-18T12:31:24.725408+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB","json":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB.json","graph_json":"https://pith.science/api/pith-number/KB3DYCEG3U2IR4KUUXULOHUBFB/graph.json","events_json":"https://pith.science/api/pith-number/KB3DYCEG3U2IR4KUUXULOHUBFB/events.json","paper":"https://pith.science/paper/KB3DYCEG"},"agent_actions":{"view_html":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB","download_json":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB.json","view_paper":"https://pith.science/paper/KB3DYCEG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1705.06580&json=true","fetch_graph":"https://pith.science/api/pith-number/KB3DYCEG3U2IR4KUUXULOHUBFB/graph.json","fetch_events":"https://pith.science/api/pith-number/KB3DYCEG3U2IR4KUUXULOHUBFB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB/action/storage_attestation","attest_author":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB/action/author_attestation","sign_citation":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB/action/citation_signature","submit_replication":"https://pith.science/pith/KB3DYCEG3U2IR4KUUXULOHUBFB/action/replication_record"}},"created_at":"2026-05-18T00:20:27.492504+00:00","updated_at":"2026-05-18T00:20:27.492504+00:00"}