{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WULNOOAEOG47GQ63F5ZDCVY4T7","short_pith_number":"pith:WULNOOAE","canonical_record":{"source":{"id":"1408.6111","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-08-26T13:33:46Z","cross_cats_sorted":[],"title_canon_sha256":"065d2e3f887c47e8726862e02836f1bfbe92af3142435770fe2823331abdc85a","abstract_canon_sha256":"c31f0c02ef97eeb72c0d0f6f983652a43cc00d06e28015cf48ca30685f794210"},"schema_version":"1.0"},"canonical_sha256":"b516d7380471b9f343db2f7231571c9ff182ee555010a3968adc656f50fa109d","source":{"kind":"arxiv","id":"1408.6111","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6111","created_at":"2026-05-18T01:42:13Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6111v1","created_at":"2026-05-18T01:42:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6111","created_at":"2026-05-18T01:42:13Z"},{"alias_kind":"pith_short_12","alias_value":"WULNOOAEOG47","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WULNOOAEOG47GQ63","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WULNOOAE","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WULNOOAEOG47GQ63F5ZDCVY4T7","target":"record","payload":{"canonical_record":{"source":{"id":"1408.6111","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-08-26T13:33:46Z","cross_cats_sorted":[],"title_canon_sha256":"065d2e3f887c47e8726862e02836f1bfbe92af3142435770fe2823331abdc85a","abstract_canon_sha256":"c31f0c02ef97eeb72c0d0f6f983652a43cc00d06e28015cf48ca30685f794210"},"schema_version":"1.0"},"canonical_sha256":"b516d7380471b9f343db2f7231571c9ff182ee555010a3968adc656f50fa109d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:13.030150Z","signature_b64":"ew8WLYxx32PKzPHD3XWHNAogQrALttsAWSAEXK6BKNgD2sxsu2OmHi2Z4LPfduwmq2hQt7+BttBm+FcVKpfQAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b516d7380471b9f343db2f7231571c9ff182ee555010a3968adc656f50fa109d","last_reissued_at":"2026-05-18T01:42:13.029558Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:13.029558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.6111","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":"2026-05-18T01:42:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zO1fyBH3bi6A82t3TFb1XFAS5ieGVNnpFbCPhNmnxM1p9hXSOpf2fCPwfSwO+1DcC/0XfUdimHTiAM6wqvQzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:32:52.689462Z"},"content_sha256":"8769c825b4c01cac259aa5511c0bc029f36e821cc3e3b4d9c1d3331f43cba1e6","schema_version":"1.0","event_id":"sha256:8769c825b4c01cac259aa5511c0bc029f36e821cc3e3b4d9c1d3331f43cba1e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WULNOOAEOG47GQ63F5ZDCVY4T7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A laser-lock concept to reach cm/s-precision in Doppler experiments with Fabry-Perot wavelength calibrators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Reiners, R.G. Ulbrich, R.K. Banyal","submitted_at":"2014-08-26T13:33:46Z","abstract_excerpt":"State-of-the-art Doppler experiments require wavelength calibration with precision at the cm/s level. A low-finesse Fabry-Perot interferometer (FPI) can provide a wavelength comb with a very large bandwidth as required for astronomical experiments, but unavoidable spectral drifts are difficult to control. Instead of actively controlling the FPI cavity, we propose to passively stabilize the interferometer and track the time-dependent cavity length drift externally. A dual-finesse cavity allows drift tracking during observation. The drift of the cavity length is monitored in the high-finesse ran"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6111","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":"2026-05-18T01:42:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PTe8Rwdnnk0frulFLe8P9NIxdSnkkFptytPg4hgiiK8BhB8nyxbXpWKqQmBU6cWQbbOrfoE5My8B6z4CFxAtBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:32:52.689812Z"},"content_sha256":"fb3f835f7fbcc6bf9b3995c0715d1cdd1c61534582e7f8cbefab0db76647f4e5","schema_version":"1.0","event_id":"sha256:fb3f835f7fbcc6bf9b3995c0715d1cdd1c61534582e7f8cbefab0db76647f4e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WULNOOAEOG47GQ63F5ZDCVY4T7/bundle.json","state_url":"https://pith.science/pith/WULNOOAEOG47GQ63F5ZDCVY4T7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WULNOOAEOG47GQ63F5ZDCVY4T7/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":"2026-06-03T21:32:52Z","links":{"resolver":"https://pith.science/pith/WULNOOAEOG47GQ63F5ZDCVY4T7","bundle":"https://pith.science/pith/WULNOOAEOG47GQ63F5ZDCVY4T7/bundle.json","state":"https://pith.science/pith/WULNOOAEOG47GQ63F5ZDCVY4T7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WULNOOAEOG47GQ63F5ZDCVY4T7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WULNOOAEOG47GQ63F5ZDCVY4T7","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":"c31f0c02ef97eeb72c0d0f6f983652a43cc00d06e28015cf48ca30685f794210","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-08-26T13:33:46Z","title_canon_sha256":"065d2e3f887c47e8726862e02836f1bfbe92af3142435770fe2823331abdc85a"},"schema_version":"1.0","source":{"id":"1408.6111","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6111","created_at":"2026-05-18T01:42:13Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6111v1","created_at":"2026-05-18T01:42:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6111","created_at":"2026-05-18T01:42:13Z"},{"alias_kind":"pith_short_12","alias_value":"WULNOOAEOG47","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WULNOOAEOG47GQ63","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WULNOOAE","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:fb3f835f7fbcc6bf9b3995c0715d1cdd1c61534582e7f8cbefab0db76647f4e5","target":"graph","created_at":"2026-05-18T01:42:13Z","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":"State-of-the-art Doppler experiments require wavelength calibration with precision at the cm/s level. A low-finesse Fabry-Perot interferometer (FPI) can provide a wavelength comb with a very large bandwidth as required for astronomical experiments, but unavoidable spectral drifts are difficult to control. Instead of actively controlling the FPI cavity, we propose to passively stabilize the interferometer and track the time-dependent cavity length drift externally. A dual-finesse cavity allows drift tracking during observation. The drift of the cavity length is monitored in the high-finesse ran","authors_text":"A. Reiners, R.G. Ulbrich, R.K. Banyal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-08-26T13:33:46Z","title":"A laser-lock concept to reach cm/s-precision in Doppler experiments with Fabry-Perot wavelength calibrators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6111","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":"sha256:8769c825b4c01cac259aa5511c0bc029f36e821cc3e3b4d9c1d3331f43cba1e6","target":"record","created_at":"2026-05-18T01:42:13Z","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":"c31f0c02ef97eeb72c0d0f6f983652a43cc00d06e28015cf48ca30685f794210","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-08-26T13:33:46Z","title_canon_sha256":"065d2e3f887c47e8726862e02836f1bfbe92af3142435770fe2823331abdc85a"},"schema_version":"1.0","source":{"id":"1408.6111","kind":"arxiv","version":1}},"canonical_sha256":"b516d7380471b9f343db2f7231571c9ff182ee555010a3968adc656f50fa109d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b516d7380471b9f343db2f7231571c9ff182ee555010a3968adc656f50fa109d","first_computed_at":"2026-05-18T01:42:13.029558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:13.029558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ew8WLYxx32PKzPHD3XWHNAogQrALttsAWSAEXK6BKNgD2sxsu2OmHi2Z4LPfduwmq2hQt7+BttBm+FcVKpfQAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:13.030150Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.6111","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8769c825b4c01cac259aa5511c0bc029f36e821cc3e3b4d9c1d3331f43cba1e6","sha256:fb3f835f7fbcc6bf9b3995c0715d1cdd1c61534582e7f8cbefab0db76647f4e5"],"state_sha256":"49694fa774f072bdd07389187e1079b02a221975691e367f72104b902a51aa65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9+9R8a2uakinSgf7qomA0sfLb7y6cu+dBhnA8G7M/9LKNa+1gmU1C3vVMffN2HJWeUBXCZL0QMgraqLFh0o4Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T21:32:52.691839Z","bundle_sha256":"251a64804db0c27e021df58fbbdb3a5a4862aa280f480cc904fa69ff18aa5556"}}