{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:7JQ674N6VP5NLFQVVZ3G2OS6NO","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":"8bea07548f4c4cdf699f6ea666b1dd291c1b29a6afbcf683fba29c6e4b2c6e53","cross_cats_sorted":["physics.comp-ph","physics.ins-det","physics.optics"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2023-05-02T14:51:22Z","title_canon_sha256":"b84a3536e52a355c2ba9ea1538a27b3b848e07f7a466c3195c6a24238f9d4dcf"},"schema_version":"1.0","source":{"id":"2305.01468","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.01468","created_at":"2026-07-05T06:06:25Z"},{"alias_kind":"arxiv_version","alias_value":"2305.01468v1","created_at":"2026-07-05T06:06:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.01468","created_at":"2026-07-05T06:06:25Z"},{"alias_kind":"pith_short_12","alias_value":"7JQ674N6VP5N","created_at":"2026-07-05T06:06:25Z"},{"alias_kind":"pith_short_16","alias_value":"7JQ674N6VP5NLFQV","created_at":"2026-07-05T06:06:25Z"},{"alias_kind":"pith_short_8","alias_value":"7JQ674N6","created_at":"2026-07-05T06:06:25Z"}],"graph_snapshots":[{"event_id":"sha256:ff21e9b095ececb63121ceb9101d7bf093e4f1821d64e0b81eed3397ae0bbf6e","target":"graph","created_at":"2026-07-05T06:06:25Z","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/2305.01468/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a long-range fiber-optic environmental deformation sensor based on active phase noise cancellation (PNC) in metrological frequency dissemination. PNC sensing exploits recordings of a compensation frequency that is commonly discarded. Without the need for dedicated measurement devices, it operates synchronously with metrological services, suggesting that existing phase-stabilized metrological networks can be co-used effortlessly as environmental sensors. The compatibility of PNC sensing with inline amplification enables the interrogation of cables with lengths beyond 1000 km, making ","authors_text":"Andreas Fichtner, Dominik Husmann, Jacques Morel, Nils M\\\"uller, Sebastian Noe","cross_cats":["physics.comp-ph","physics.ins-det","physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2023-05-02T14:51:22Z","title":"Long-range fiber-optic earthquake sensing by active phase noise cancellation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.01468","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":"sha256:56cc33d937aa1164282bf040819fbd0b1acd21fd060759f005443f930668f297","target":"record","created_at":"2026-07-05T06:06:25Z","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":"8bea07548f4c4cdf699f6ea666b1dd291c1b29a6afbcf683fba29c6e4b2c6e53","cross_cats_sorted":["physics.comp-ph","physics.ins-det","physics.optics"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2023-05-02T14:51:22Z","title_canon_sha256":"b84a3536e52a355c2ba9ea1538a27b3b848e07f7a466c3195c6a24238f9d4dcf"},"schema_version":"1.0","source":{"id":"2305.01468","kind":"arxiv","version":1}},"canonical_sha256":"fa61eff1beabfad59615ae766d3a5e6ba03520c132de30e08cfc4f3c4b4755b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa61eff1beabfad59615ae766d3a5e6ba03520c132de30e08cfc4f3c4b4755b0","first_computed_at":"2026-07-05T06:06:25.982204Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:06:25.982204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qWMMvVBAQunLsroviPK9NxDUpDlRBClQH+2gp/hzEvOlVdkj78KjG2BqJucIfQvKegsza5xnhGbqCqDd7VgWAg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:06:25.982692Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.01468","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56cc33d937aa1164282bf040819fbd0b1acd21fd060759f005443f930668f297","sha256:ff21e9b095ececb63121ceb9101d7bf093e4f1821d64e0b81eed3397ae0bbf6e"],"state_sha256":"240567589f0a14da479d5d595406cfa21d5456ed041e1f537e4f47ebe87701ac"}