{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:KRFGUQ5GAJSUSJKLUMZD5BJRGT","short_pith_number":"pith:KRFGUQ5G","canonical_record":{"source":{"id":"2202.08104","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-02-10T15:19:07Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"2e6f4e61e2ef117812f880452e1d55c394da16f25502c6bf880263b698594bcf","abstract_canon_sha256":"09eb58944bc484e2dea484a07f6b6ed9bc80d866425e3138090a0d7b2effa339"},"schema_version":"1.0"},"canonical_sha256":"544a6a43a6026549254ba3323e853134cc2d5bac168dfef48718af649a0f6631","source":{"kind":"arxiv","id":"2202.08104","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.08104","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"arxiv_version","alias_value":"2202.08104v2","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.08104","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"pith_short_12","alias_value":"KRFGUQ5GAJSU","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"pith_short_16","alias_value":"KRFGUQ5GAJSUSJKL","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"pith_short_8","alias_value":"KRFGUQ5G","created_at":"2026-07-05T04:06:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:KRFGUQ5GAJSUSJKLUMZD5BJRGT","target":"record","payload":{"canonical_record":{"source":{"id":"2202.08104","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-02-10T15:19:07Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"2e6f4e61e2ef117812f880452e1d55c394da16f25502c6bf880263b698594bcf","abstract_canon_sha256":"09eb58944bc484e2dea484a07f6b6ed9bc80d866425e3138090a0d7b2effa339"},"schema_version":"1.0"},"canonical_sha256":"544a6a43a6026549254ba3323e853134cc2d5bac168dfef48718af649a0f6631","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:06:30.781935Z","signature_b64":"nDmkJM/wgXNtze14rnL9QsupWQ5/q2n6jOl04ikflu33i8RFFP1fTQR1EXACnTjZ49ak9s9Ri2vosNtx0HUFCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"544a6a43a6026549254ba3323e853134cc2d5bac168dfef48718af649a0f6631","last_reissued_at":"2026-07-05T04:06:30.781522Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:06:30.781522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.08104","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:06:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wTIQSKzEnjYygCrFHqad3qdVrto27qCQye3yCup7SMKKavjTMWSR3vaBMBTIUWjkVxH6hyl+YSNzBa7O23p+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:15:20.028388Z"},"content_sha256":"38a48a2783ebb189e0ac6e8e2ff35ea86a04ed790160a87044c770666aca8a42","schema_version":"1.0","event_id":"sha256:38a48a2783ebb189e0ac6e8e2ff35ea86a04ed790160a87044c770666aca8a42"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:KRFGUQ5GAJSUSJKLUMZD5BJRGT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An auto-locking ultra-stable laser with sub-hertz linewidth","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.ins-det","authors_text":"D. Jiao, G. Xu, J. Gao, J. Liu, Q. Zang, R. Dong, S. Zhang, T. Liu, X. Deng, X. Zhang","submitted_at":"2022-02-10T15:19:07Z","abstract_excerpt":"We report in detail the design process and performance of an auto-locking ultra-stable laser with sub-hertz linewidth at the first time. The laser frequency is automatically stabilized to an optical reference cavity with a home-made controller, which is based on a combination of digital circuit and analog circuit. The digital circuit is used for diagnosing and manipulating the state of the ultra-stable laser, and the analog circuit is used for demodulating the discriminate signal and servo control. A method of searching the transmission signal in the closed-loop state instead of the open-loop "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.08104","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2202.08104/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":"2026-07-05T04:06:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZYUFHYocAj24ukcC0AT8FD2a39rlAII6UUQeXillISKXg6UjVYhcsCDAIVHbzn7WHn6efBijPf9oScrAVIy/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:15:20.028899Z"},"content_sha256":"18fe93e71acaa41fef89f01a48d05e8418726523936b277a547cecb29e707a05","schema_version":"1.0","event_id":"sha256:18fe93e71acaa41fef89f01a48d05e8418726523936b277a547cecb29e707a05"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT/bundle.json","state_url":"https://pith.science/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT/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":"2026-08-03T17:15:20Z","links":{"resolver":"https://pith.science/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT","bundle":"https://pith.science/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT/bundle.json","state":"https://pith.science/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KRFGUQ5GAJSUSJKLUMZD5BJRGT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:KRFGUQ5GAJSUSJKLUMZD5BJRGT","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":"09eb58944bc484e2dea484a07f6b6ed9bc80d866425e3138090a0d7b2effa339","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-02-10T15:19:07Z","title_canon_sha256":"2e6f4e61e2ef117812f880452e1d55c394da16f25502c6bf880263b698594bcf"},"schema_version":"1.0","source":{"id":"2202.08104","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.08104","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"arxiv_version","alias_value":"2202.08104v2","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.08104","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"pith_short_12","alias_value":"KRFGUQ5GAJSU","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"pith_short_16","alias_value":"KRFGUQ5GAJSUSJKL","created_at":"2026-07-05T04:06:30Z"},{"alias_kind":"pith_short_8","alias_value":"KRFGUQ5G","created_at":"2026-07-05T04:06:30Z"}],"graph_snapshots":[{"event_id":"sha256:18fe93e71acaa41fef89f01a48d05e8418726523936b277a547cecb29e707a05","target":"graph","created_at":"2026-07-05T04:06:30Z","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/2202.08104/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report in detail the design process and performance of an auto-locking ultra-stable laser with sub-hertz linewidth at the first time. The laser frequency is automatically stabilized to an optical reference cavity with a home-made controller, which is based on a combination of digital circuit and analog circuit. The digital circuit is used for diagnosing and manipulating the state of the ultra-stable laser, and the analog circuit is used for demodulating the discriminate signal and servo control. A method of searching the transmission signal in the closed-loop state instead of the open-loop ","authors_text":"D. Jiao, G. Xu, J. Gao, J. Liu, Q. Zang, R. Dong, S. Zhang, T. Liu, X. Deng, X. Zhang","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-02-10T15:19:07Z","title":"An auto-locking ultra-stable laser with sub-hertz linewidth"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.08104","kind":"arxiv","version":2},"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":"sha256:38a48a2783ebb189e0ac6e8e2ff35ea86a04ed790160a87044c770666aca8a42","target":"record","created_at":"2026-07-05T04:06:30Z","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":"09eb58944bc484e2dea484a07f6b6ed9bc80d866425e3138090a0d7b2effa339","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-02-10T15:19:07Z","title_canon_sha256":"2e6f4e61e2ef117812f880452e1d55c394da16f25502c6bf880263b698594bcf"},"schema_version":"1.0","source":{"id":"2202.08104","kind":"arxiv","version":2}},"canonical_sha256":"544a6a43a6026549254ba3323e853134cc2d5bac168dfef48718af649a0f6631","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"544a6a43a6026549254ba3323e853134cc2d5bac168dfef48718af649a0f6631","first_computed_at":"2026-07-05T04:06:30.781522Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:06:30.781522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nDmkJM/wgXNtze14rnL9QsupWQ5/q2n6jOl04ikflu33i8RFFP1fTQR1EXACnTjZ49ak9s9Ri2vosNtx0HUFCg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:06:30.781935Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.08104","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38a48a2783ebb189e0ac6e8e2ff35ea86a04ed790160a87044c770666aca8a42","sha256:18fe93e71acaa41fef89f01a48d05e8418726523936b277a547cecb29e707a05"],"state_sha256":"60297edc3548af912f25e4c1ec3fe17febc7963be8db0161f2fbbd5a403d2539"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fmPmnRuSJUP2EuR3yfZnOC3Jn2QaCe2z8+vC5MS+wxQlUw2BmQ/xBX56CgAvvt9k/n/qdyR5G2K87QVQyjNEDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:15:20.034448Z","bundle_sha256":"ec424d1e6b0cc25f58aacd9d0e2014316c94d9cb5f073e43255063a76a1b58f0"}}