{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:BSKKKZRUZ4S4VBGPAF56BNJL5S","short_pith_number":"pith:BSKKKZRU","canonical_record":{"source":{"id":"1203.4478","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-20T15:53:06Z","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"title_canon_sha256":"4139a5c21b0e84878d4304ba03da64a16b0f65e9b84acdcfbf2821aaf032457c","abstract_canon_sha256":"71c82e79eaf9c1c245e12153c4b15b297f067f697e402932ad4822ded283675b"},"schema_version":"1.0"},"canonical_sha256":"0c94a56634cf25ca84cf017be0b52bec8e64b15b4331001a9162aec0bef1b993","source":{"kind":"arxiv","id":"1203.4478","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4478","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4478v1","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4478","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"pith_short_12","alias_value":"BSKKKZRUZ4S4","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BSKKKZRUZ4S4VBGP","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BSKKKZRU","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:BSKKKZRUZ4S4VBGPAF56BNJL5S","target":"record","payload":{"canonical_record":{"source":{"id":"1203.4478","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-20T15:53:06Z","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"title_canon_sha256":"4139a5c21b0e84878d4304ba03da64a16b0f65e9b84acdcfbf2821aaf032457c","abstract_canon_sha256":"71c82e79eaf9c1c245e12153c4b15b297f067f697e402932ad4822ded283675b"},"schema_version":"1.0"},"canonical_sha256":"0c94a56634cf25ca84cf017be0b52bec8e64b15b4331001a9162aec0bef1b993","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:59:38.981107Z","signature_b64":"3irIJmWnyj8WhIcgOnxCUpdJR706WtPkiPTgtuhfomWtIMwu+aGMMMkHVlC+lP8Y/vvh74Xi9SC7ETJkFY/3DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c94a56634cf25ca84cf017be0b52bec8e64b15b4331001a9162aec0bef1b993","last_reissued_at":"2026-05-18T03:59:38.980550Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:59:38.980550Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.4478","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":"2026-05-18T03:59:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gcrKQZstw6w9sJREtTOxcSJtzgKaktQdxS8PaguQqthYc01Y3gMwBUXUhrn82Vi2ftMa0Yqia3AnZlj0aAadBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:41:28.318277Z"},"content_sha256":"da53f4b4fee031de2991ad3aa187ac4b8eb4c197b21a5752f9884c2f6d69559a","schema_version":"1.0","event_id":"sha256:da53f4b4fee031de2991ad3aa187ac4b8eb4c197b21a5752f9884c2f6d69559a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:BSKKKZRUZ4S4VBGPAF56BNJL5S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-time phasefront detector for heterodyne interferometers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"primary_cat":"physics.optics","authors_text":"Antonio F. Garc\\'ia Mar\\'in, Felipe Guzm\\'an Cervantes, Frank Steier, Gerhard Heinzel, Karsten Danzmann, Oliver Jennrich, Vinzenz Wand","submitted_at":"2012-03-20T15:53:06Z","abstract_excerpt":"We present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the LISA Technology Package (LTP) interferometer, and will assist in the manufacture of its flight model. Due to the advantages this instrument offers, it also has general applications in optical metrology."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4478","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":"2026-05-18T03:59:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nDkD1wor8hHet+9sJbEAXXTZ/GABPQmtWraoBQS52aZwdUI6zKGgdY53R9tN+iG1rsbuuO0QbQD/+HKnR60CCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:41:28.318640Z"},"content_sha256":"0d7ad071af63757dca9570a95c1195cc57811acb44bd940623cc1c06a1792eac","schema_version":"1.0","event_id":"sha256:0d7ad071af63757dca9570a95c1195cc57811acb44bd940623cc1c06a1792eac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S/bundle.json","state_url":"https://pith.science/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S/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":"2026-06-08T21:41:28Z","links":{"resolver":"https://pith.science/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S","bundle":"https://pith.science/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S/bundle.json","state":"https://pith.science/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BSKKKZRUZ4S4VBGPAF56BNJL5S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BSKKKZRUZ4S4VBGPAF56BNJL5S","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":"71c82e79eaf9c1c245e12153c4b15b297f067f697e402932ad4822ded283675b","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-20T15:53:06Z","title_canon_sha256":"4139a5c21b0e84878d4304ba03da64a16b0f65e9b84acdcfbf2821aaf032457c"},"schema_version":"1.0","source":{"id":"1203.4478","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4478","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4478v1","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4478","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"pith_short_12","alias_value":"BSKKKZRUZ4S4","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BSKKKZRUZ4S4VBGP","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BSKKKZRU","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:0d7ad071af63757dca9570a95c1195cc57811acb44bd940623cc1c06a1792eac","target":"graph","created_at":"2026-05-18T03:59:38Z","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 present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the LISA Technology Package (LTP) interferometer, and will assist in the manufacture of its flight model. Due to the advantages this instrument offers, it also has general applications in optical metrology.","authors_text":"Antonio F. Garc\\'ia Mar\\'in, Felipe Guzm\\'an Cervantes, Frank Steier, Gerhard Heinzel, Karsten Danzmann, Oliver Jennrich, Vinzenz Wand","cross_cats":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-20T15:53:06Z","title":"Real-time phasefront detector for heterodyne interferometers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4478","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:da53f4b4fee031de2991ad3aa187ac4b8eb4c197b21a5752f9884c2f6d69559a","target":"record","created_at":"2026-05-18T03:59:38Z","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":"71c82e79eaf9c1c245e12153c4b15b297f067f697e402932ad4822ded283675b","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-20T15:53:06Z","title_canon_sha256":"4139a5c21b0e84878d4304ba03da64a16b0f65e9b84acdcfbf2821aaf032457c"},"schema_version":"1.0","source":{"id":"1203.4478","kind":"arxiv","version":1}},"canonical_sha256":"0c94a56634cf25ca84cf017be0b52bec8e64b15b4331001a9162aec0bef1b993","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c94a56634cf25ca84cf017be0b52bec8e64b15b4331001a9162aec0bef1b993","first_computed_at":"2026-05-18T03:59:38.980550Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:59:38.980550Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3irIJmWnyj8WhIcgOnxCUpdJR706WtPkiPTgtuhfomWtIMwu+aGMMMkHVlC+lP8Y/vvh74Xi9SC7ETJkFY/3DA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:59:38.981107Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.4478","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da53f4b4fee031de2991ad3aa187ac4b8eb4c197b21a5752f9884c2f6d69559a","sha256:0d7ad071af63757dca9570a95c1195cc57811acb44bd940623cc1c06a1792eac"],"state_sha256":"6a3315d039f08f65729ac848ccb6fb616783d71a66ba413aabbe490643aa1193"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qkIFca3uRcyf5Er53XXy5aLingn1oh9I2xCg4d9/QA3eZwA/dNK68lhAq3Ia3VcvVJa0Q38+Foyh+ZQDr6czCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T21:41:28.320539Z","bundle_sha256":"8d5afccc33383bdec2f4c7ee17ac8ea0d0103e8e8b648572ec95c2b4e492eab0"}}