{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:UZ5MTP2PTQFJODAISHVBWTS6SS","short_pith_number":"pith:UZ5MTP2P","canonical_record":{"source":{"id":"1409.3342","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.optics","submitted_at":"2014-09-11T08:03:34Z","cross_cats_sorted":[],"title_canon_sha256":"18a334764c1cf47cd277cabe1135f569d421859e86fb5bce19f120481ed2d887","abstract_canon_sha256":"2a20e17b9dc93ef8c976cb638c64c9a48d20246ed7eedabba4bae6ca5c1322d5"},"schema_version":"1.0"},"canonical_sha256":"a67ac9bf4f9c0a970c0891ea1b4e5e94b27f90c356cb662e84cce8371b2c7195","source":{"kind":"arxiv","id":"1409.3342","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.3342","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"arxiv_version","alias_value":"1409.3342v1","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.3342","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"pith_short_12","alias_value":"UZ5MTP2PTQFJ","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UZ5MTP2PTQFJODAI","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UZ5MTP2P","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:UZ5MTP2PTQFJODAISHVBWTS6SS","target":"record","payload":{"canonical_record":{"source":{"id":"1409.3342","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.optics","submitted_at":"2014-09-11T08:03:34Z","cross_cats_sorted":[],"title_canon_sha256":"18a334764c1cf47cd277cabe1135f569d421859e86fb5bce19f120481ed2d887","abstract_canon_sha256":"2a20e17b9dc93ef8c976cb638c64c9a48d20246ed7eedabba4bae6ca5c1322d5"},"schema_version":"1.0"},"canonical_sha256":"a67ac9bf4f9c0a970c0891ea1b4e5e94b27f90c356cb662e84cce8371b2c7195","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:43:01.588853Z","signature_b64":"f1tVHyr1/sWUTHZPaYAT4hvFfvf/bsVUU4TLUud7kLjHp9IqVZA5wND4t1S9xWBN6yzLThUl2V+MnFM08LNwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a67ac9bf4f9c0a970c0891ea1b4e5e94b27f90c356cb662e84cce8371b2c7195","last_reissued_at":"2026-05-18T02:43:01.588359Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:43:01.588359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.3342","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":"2026-05-18T02:43:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bPmvxh4UFPxwQR5YYW2qAFQ2G4mTXEH8CVqrxXSs5TW3lYpHQ90FvOWBcqQnMunPGHG9x7CZ2zQsi2YWD98yBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:29:17.688673Z"},"content_sha256":"28b4d385c2a0edc225c45c035ee5bf26d5c1311e86211a8b26a35239272bc126","schema_version":"1.0","event_id":"sha256:28b4d385c2a0edc225c45c035ee5bf26d5c1311e86211a8b26a35239272bc126"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:UZ5MTP2PTQFJODAISHVBWTS6SS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fiber-based ultra-stable frequency synchronization using client-side, 1f-2f active compensation method","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Bo Wang, Chao Gao, Jing Miao, Lijun Wang, Xi Zhu, Yu Bai","submitted_at":"2014-09-11T08:03:34Z","abstract_excerpt":"We demonstrate a frequency synchronization scheme with the phase noise compensation function placed at the client site. One transmitting module hence can be linked with multiple client sites. As a performance test, using two separate 50 km fiber spools, we recover the 100 MHz disseminated reference frequencies at two remote sites, separately. Relative frequency stabilities between two recovered frequency signals of 2.8E-14/s and 2.5E-17/day are obtained. This scalable scheme is suitable for the applications of frequency dissemination with a star-topology, such as SKA and DSN."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.3342","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":"2026-05-18T02:43:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WddBx0ZYOJTK+dcWY6mh+f6MgRVbqIU7ONHPe/JBCiBzC3oQTnIBDhD5k0L9VIYb2oLMudIG/VPvekm9GtPTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:29:17.689019Z"},"content_sha256":"46d774887ac5e53c2a00976c5a6121c595ec9b13af7bfa28b880166741cf16a3","schema_version":"1.0","event_id":"sha256:46d774887ac5e53c2a00976c5a6121c595ec9b13af7bfa28b880166741cf16a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UZ5MTP2PTQFJODAISHVBWTS6SS/bundle.json","state_url":"https://pith.science/pith/UZ5MTP2PTQFJODAISHVBWTS6SS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UZ5MTP2PTQFJODAISHVBWTS6SS/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":"2026-06-01T07:29:17Z","links":{"resolver":"https://pith.science/pith/UZ5MTP2PTQFJODAISHVBWTS6SS","bundle":"https://pith.science/pith/UZ5MTP2PTQFJODAISHVBWTS6SS/bundle.json","state":"https://pith.science/pith/UZ5MTP2PTQFJODAISHVBWTS6SS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UZ5MTP2PTQFJODAISHVBWTS6SS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:UZ5MTP2PTQFJODAISHVBWTS6SS","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":"2a20e17b9dc93ef8c976cb638c64c9a48d20246ed7eedabba4bae6ca5c1322d5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.optics","submitted_at":"2014-09-11T08:03:34Z","title_canon_sha256":"18a334764c1cf47cd277cabe1135f569d421859e86fb5bce19f120481ed2d887"},"schema_version":"1.0","source":{"id":"1409.3342","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.3342","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"arxiv_version","alias_value":"1409.3342v1","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.3342","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"pith_short_12","alias_value":"UZ5MTP2PTQFJ","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UZ5MTP2PTQFJODAI","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UZ5MTP2P","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:46d774887ac5e53c2a00976c5a6121c595ec9b13af7bfa28b880166741cf16a3","target":"graph","created_at":"2026-05-18T02:43:01Z","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 demonstrate a frequency synchronization scheme with the phase noise compensation function placed at the client site. One transmitting module hence can be linked with multiple client sites. As a performance test, using two separate 50 km fiber spools, we recover the 100 MHz disseminated reference frequencies at two remote sites, separately. Relative frequency stabilities between two recovered frequency signals of 2.8E-14/s and 2.5E-17/day are obtained. This scalable scheme is suitable for the applications of frequency dissemination with a star-topology, such as SKA and DSN.","authors_text":"Bo Wang, Chao Gao, Jing Miao, Lijun Wang, Xi Zhu, Yu Bai","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.optics","submitted_at":"2014-09-11T08:03:34Z","title":"Fiber-based ultra-stable frequency synchronization using client-side, 1f-2f active compensation method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.3342","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":"sha256:28b4d385c2a0edc225c45c035ee5bf26d5c1311e86211a8b26a35239272bc126","target":"record","created_at":"2026-05-18T02:43:01Z","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":"2a20e17b9dc93ef8c976cb638c64c9a48d20246ed7eedabba4bae6ca5c1322d5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.optics","submitted_at":"2014-09-11T08:03:34Z","title_canon_sha256":"18a334764c1cf47cd277cabe1135f569d421859e86fb5bce19f120481ed2d887"},"schema_version":"1.0","source":{"id":"1409.3342","kind":"arxiv","version":1}},"canonical_sha256":"a67ac9bf4f9c0a970c0891ea1b4e5e94b27f90c356cb662e84cce8371b2c7195","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a67ac9bf4f9c0a970c0891ea1b4e5e94b27f90c356cb662e84cce8371b2c7195","first_computed_at":"2026-05-18T02:43:01.588359Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:01.588359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f1tVHyr1/sWUTHZPaYAT4hvFfvf/bsVUU4TLUud7kLjHp9IqVZA5wND4t1S9xWBN6yzLThUl2V+MnFM08LNwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:01.588853Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.3342","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28b4d385c2a0edc225c45c035ee5bf26d5c1311e86211a8b26a35239272bc126","sha256:46d774887ac5e53c2a00976c5a6121c595ec9b13af7bfa28b880166741cf16a3"],"state_sha256":"2ab7ff4e16b81492a460bbab1f0329f61e3e7a3f671c44003cf42864e9ae2053"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q3kXPKrK0bcN5+BwZdkWvqpWHr3kZ2DPqae/+TmMvKjsnRrdCrdRFkqe5kYHw95jsACl8qlQk48LsR+Yp3w3BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T07:29:17.690871Z","bundle_sha256":"45c8b141d552d5033e053dfc5f9af81c2a577036ee4a9d70d2c68992f4bad095"}}