{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:GNRGC6XF5CPZ5OKEVKKAI2TJPF","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":"90b0fdba6a61aa14b736fc7d35e3ba015c7332b74d30fefb010cb9d1f32b3adc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-03-26T13:19:32Z","title_canon_sha256":"4089f4f0bacf39c48b1ce6f1504e748e284da1a3703efd7f7532d3602671da40"},"schema_version":"1.0","source":{"id":"1303.6477","kind":"arxiv","version":8}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.6477","created_at":"2026-05-18T03:05:26Z"},{"alias_kind":"arxiv_version","alias_value":"1303.6477v8","created_at":"2026-05-18T03:05:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.6477","created_at":"2026-05-18T03:05:26Z"},{"alias_kind":"pith_short_12","alias_value":"GNRGC6XF5CPZ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"GNRGC6XF5CPZ5OKE","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"GNRGC6XF","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:273157827fbb48f91a18577eef3d3193f0c8912ce3fe2847b9b0678d7d1f1afd","target":"graph","created_at":"2026-05-18T03:05:26Z","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":"In this paper, we report high-precision absolute position measurement performed with frequency scanned interferometry (FSI). We reported previously on measurement of absolute distance with FSI [1]. Absolute position is determined by several related absolute distances measured simultaneously. The achieved precision of 2-dimensional measurements is better than 1 micron, and in 3-dimensional measurements, the precision on X and Y is confirmed to be below 1 micron, while the confirmed precision on Z is about 2 microns, where the confirmation is limited by the lower precision of the moving stage in","authors_text":"Cheng Li, Haijun Yang, Keith Riles, Tianxiang Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-03-26T13:19:32Z","title":"High-precision Absolute Coordinate Measurement using Frequency Scanned Interferometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.6477","kind":"arxiv","version":8},"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":"sha256:976374dbf5f082f690ef01a4883d3d4de0573985f66176dfc2bc91c85d2ac1b1","target":"record","created_at":"2026-05-18T03:05:26Z","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":"90b0fdba6a61aa14b736fc7d35e3ba015c7332b74d30fefb010cb9d1f32b3adc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-03-26T13:19:32Z","title_canon_sha256":"4089f4f0bacf39c48b1ce6f1504e748e284da1a3703efd7f7532d3602671da40"},"schema_version":"1.0","source":{"id":"1303.6477","kind":"arxiv","version":8}},"canonical_sha256":"3362617ae5e89f9eb944aa94046a69795d50929b9822f88fbfb3bbba55634f1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3362617ae5e89f9eb944aa94046a69795d50929b9822f88fbfb3bbba55634f1e","first_computed_at":"2026-05-18T03:05:26.191880Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:05:26.191880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WUC3mBx59oYcugbvVPlvg6r6boy9ngGuro+VPUcVxH7MKqBnpnW2Oc/TH7ZL9pkUglGBmlg0XI2CwWHzkYAvBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:05:26.192436Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.6477","source_kind":"arxiv","source_version":8}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:976374dbf5f082f690ef01a4883d3d4de0573985f66176dfc2bc91c85d2ac1b1","sha256:273157827fbb48f91a18577eef3d3193f0c8912ce3fe2847b9b0678d7d1f1afd"],"state_sha256":"95b9c023616dd54f9898e5ec45e7fae7521d6c18dd88999c4723475627250f14"}