{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:6HT2LAOWJJSEZVYYRWHLUFYAMF","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":"98ad62de5c5b4eeb5c15748ebe28baff2fbcc21c866893b6e5bacd237501fd61","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-09T20:00:26Z","title_canon_sha256":"93bd6078daf7a3c130ea2cf7d39cf23bb7143775c36227b766a33922fcf98a90"},"schema_version":"1.0","source":{"id":"1407.2617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2617","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2617v1","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2617","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"pith_short_12","alias_value":"6HT2LAOWJJSE","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6HT2LAOWJJSEZVYY","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6HT2LAOW","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:c1ea77e6bbd30702c15ad2e6751287c339cf079775c7da11f5aee4351bb24cd5","target":"graph","created_at":"2026-05-18T01:42:38Z","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 are designing and constructing a new SETI (Search for Extraterrestrial Intelligence) instrument to search for direct evidence of interstellar communications via pulsed laser signals at near-infrared wavelengths. The new instrument design builds upon our past optical SETI experiences, and is the first step toward a new, more versatile and sophisticated generation of very fast optical and near-infrared pulse search devices. We present our instrumental design by giving an overview of the opto-mechanical design, detector selection and characterization, signal processing, and integration procedu","authors_text":"Andrew Siemion, Dan Werthimer, Elliot Meyer, Frank Drake, Geoffrey W. Marcy, Jerome Maire, Patrick Dorval, Remington P.S. Stone, Richard R. Treffers, Shelley A. Wright","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-09T20:00:26Z","title":"A near-infrared SETI experiment: instrument overview"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2617","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:d2a15624d09df9d9626acddd7e55941cfae1365d16f7b7ee773d9621876f5baf","target":"record","created_at":"2026-05-18T01:42:38Z","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":"98ad62de5c5b4eeb5c15748ebe28baff2fbcc21c866893b6e5bacd237501fd61","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-09T20:00:26Z","title_canon_sha256":"93bd6078daf7a3c130ea2cf7d39cf23bb7143775c36227b766a33922fcf98a90"},"schema_version":"1.0","source":{"id":"1407.2617","kind":"arxiv","version":1}},"canonical_sha256":"f1e7a581d64a644cd7188d8eba1700616defffd1067407aa22c3349da92d880a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1e7a581d64a644cd7188d8eba1700616defffd1067407aa22c3349da92d880a","first_computed_at":"2026-05-18T01:42:38.396825Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:38.396825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mk/f1fJNUK0acwHsUspUYew356IdQRs5jpM8DauKa4hBgcgxu8AUTm4418J7On7MGwJZTwN4maZAQ4k7umHdCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:38.397369Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.2617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2a15624d09df9d9626acddd7e55941cfae1365d16f7b7ee773d9621876f5baf","sha256:c1ea77e6bbd30702c15ad2e6751287c339cf079775c7da11f5aee4351bb24cd5"],"state_sha256":"13428e48ef83c8a3e42b69a6022e03d459e3923fa24d1b06b34b54ce7c00e993"}