{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:UHJMHUKTGYJV5PBTU6ASAJMTAF","short_pith_number":"pith:UHJMHUKT","canonical_record":{"source":{"id":"2508.11114","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-08-14T23:38:34Z","cross_cats_sorted":[],"title_canon_sha256":"2ab05763a459b240f77c1c0fb4db6fdc04330c6f334b3c5d06ee11f519534261","abstract_canon_sha256":"0cf602c52da119ac67f9e51d278a428fec0017491b004512d75a97de9b096b2a"},"schema_version":"1.0"},"canonical_sha256":"a1d2c3d15336135ebc33a781202593017ba1ed21946117f174eae0ce5f0e4d41","source":{"kind":"arxiv","id":"2508.11114","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.11114","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"arxiv_version","alias_value":"2508.11114v1","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.11114","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"pith_short_12","alias_value":"UHJMHUKTGYJV","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"pith_short_16","alias_value":"UHJMHUKTGYJV5PBT","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"pith_short_8","alias_value":"UHJMHUKT","created_at":"2026-07-05T11:54:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:UHJMHUKTGYJV5PBTU6ASAJMTAF","target":"record","payload":{"canonical_record":{"source":{"id":"2508.11114","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-08-14T23:38:34Z","cross_cats_sorted":[],"title_canon_sha256":"2ab05763a459b240f77c1c0fb4db6fdc04330c6f334b3c5d06ee11f519534261","abstract_canon_sha256":"0cf602c52da119ac67f9e51d278a428fec0017491b004512d75a97de9b096b2a"},"schema_version":"1.0"},"canonical_sha256":"a1d2c3d15336135ebc33a781202593017ba1ed21946117f174eae0ce5f0e4d41","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:54:18.757270Z","signature_b64":"RGavgPtI4TyU/XgZ6FobF0zXA4TQscyZICjMOuhqO34FV1VjMtVInTas5OnoO2He3K6z8ItmMu3vTJQa29HPCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1d2c3d15336135ebc33a781202593017ba1ed21946117f174eae0ce5f0e4d41","last_reissued_at":"2026-07-05T11:54:18.756840Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:54:18.756840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.11114","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":"2026-07-05T11:54:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gyu7nsKU64sWA1FVWOBgIyLtC/bn/ClNQF8iky/l0HAFA71itP7j8sHrJ9G8EvAXxho86bRVYpdQkQfAws4wDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T10:58:27.409458Z"},"content_sha256":"4e40ff43471d84c976fb9cb6b4f4f65da3632f68d8c74a13b2bfe73c5b2121a8","schema_version":"1.0","event_id":"sha256:4e40ff43471d84c976fb9cb6b4f4f65da3632f68d8c74a13b2bfe73c5b2121a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:UHJMHUKTGYJV5PBTU6ASAJMTAF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Developments on LLNL's high contrast testbed and Lick/ShaneAO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Aditya R. Sengupta, Bautista R. Fernandez, Benjamin L. Gerard, Brian Bauman, Bruce Macintosh, Cesar Laguna, Christopher Ratliff, Daren Dillon, David Tucker, Dominic F. Sanchez, Elinor Gates, Lisa Poyneer, Maureen Savage, Mike Kim, Phil Hinz, Rebecca Jensen-Clem, S. Mark Ammons, Sylvain Cetre","submitted_at":"2025-08-14T23:38:34Z","abstract_excerpt":"LLNL has recently setup a High Contrast Testbed (HCT) for AO and exoplanet imaging technology development. We present the various HCT technologies currently under development, including (1) a Wynne corrector, (2) multi-wavefront sensor (WFS) single conjugate AO (SCAO) control. We present HCT testing results of a first Wynne corrector prototype with a self-coherent camera. We present updates on development efforts to design and apply multi-WFS SCAO control to our HCT setup. We also present ongoing HCT deformable mirror and WFS upgrades. Lastly, we present developments for REDWOODS, a project to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.11114","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.11114/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":"2026-07-05T11:54:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SjcbkerbghSwvYBLqUNWPaU5eUd9NNfScsPOO4bHlCp821Jgw4pZnxYfJNAURTNmeYfSRgIfayG4E2l90zDoAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T10:58:27.410053Z"},"content_sha256":"4283f6ddf06d007611265d56b1936f19fadf5ba040fa813ebed43452a41541cc","schema_version":"1.0","event_id":"sha256:4283f6ddf06d007611265d56b1936f19fadf5ba040fa813ebed43452a41541cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF/bundle.json","state_url":"https://pith.science/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF/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":"2026-08-20T10:58:27Z","links":{"resolver":"https://pith.science/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF","bundle":"https://pith.science/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF/bundle.json","state":"https://pith.science/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UHJMHUKTGYJV5PBTU6ASAJMTAF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:UHJMHUKTGYJV5PBTU6ASAJMTAF","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":"0cf602c52da119ac67f9e51d278a428fec0017491b004512d75a97de9b096b2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-08-14T23:38:34Z","title_canon_sha256":"2ab05763a459b240f77c1c0fb4db6fdc04330c6f334b3c5d06ee11f519534261"},"schema_version":"1.0","source":{"id":"2508.11114","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.11114","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"arxiv_version","alias_value":"2508.11114v1","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.11114","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"pith_short_12","alias_value":"UHJMHUKTGYJV","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"pith_short_16","alias_value":"UHJMHUKTGYJV5PBT","created_at":"2026-07-05T11:54:18Z"},{"alias_kind":"pith_short_8","alias_value":"UHJMHUKT","created_at":"2026-07-05T11:54:18Z"}],"graph_snapshots":[{"event_id":"sha256:4283f6ddf06d007611265d56b1936f19fadf5ba040fa813ebed43452a41541cc","target":"graph","created_at":"2026-07-05T11:54:18Z","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/2508.11114/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"LLNL has recently setup a High Contrast Testbed (HCT) for AO and exoplanet imaging technology development. We present the various HCT technologies currently under development, including (1) a Wynne corrector, (2) multi-wavefront sensor (WFS) single conjugate AO (SCAO) control. We present HCT testing results of a first Wynne corrector prototype with a self-coherent camera. We present updates on development efforts to design and apply multi-WFS SCAO control to our HCT setup. We also present ongoing HCT deformable mirror and WFS upgrades. Lastly, we present developments for REDWOODS, a project to","authors_text":"Aditya R. Sengupta, Bautista R. Fernandez, Benjamin L. Gerard, Brian Bauman, Bruce Macintosh, Cesar Laguna, Christopher Ratliff, Daren Dillon, David Tucker, Dominic F. Sanchez, Elinor Gates, Lisa Poyneer, Maureen Savage, Mike Kim, Phil Hinz, Rebecca Jensen-Clem, S. Mark Ammons, Sylvain Cetre","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-08-14T23:38:34Z","title":"Developments on LLNL's high contrast testbed and Lick/ShaneAO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.11114","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":"sha256:4e40ff43471d84c976fb9cb6b4f4f65da3632f68d8c74a13b2bfe73c5b2121a8","target":"record","created_at":"2026-07-05T11:54:18Z","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":"0cf602c52da119ac67f9e51d278a428fec0017491b004512d75a97de9b096b2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-08-14T23:38:34Z","title_canon_sha256":"2ab05763a459b240f77c1c0fb4db6fdc04330c6f334b3c5d06ee11f519534261"},"schema_version":"1.0","source":{"id":"2508.11114","kind":"arxiv","version":1}},"canonical_sha256":"a1d2c3d15336135ebc33a781202593017ba1ed21946117f174eae0ce5f0e4d41","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1d2c3d15336135ebc33a781202593017ba1ed21946117f174eae0ce5f0e4d41","first_computed_at":"2026-07-05T11:54:18.756840Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:54:18.756840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RGavgPtI4TyU/XgZ6FobF0zXA4TQscyZICjMOuhqO34FV1VjMtVInTas5OnoO2He3K6z8ItmMu3vTJQa29HPCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:54:18.757270Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.11114","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e40ff43471d84c976fb9cb6b4f4f65da3632f68d8c74a13b2bfe73c5b2121a8","sha256:4283f6ddf06d007611265d56b1936f19fadf5ba040fa813ebed43452a41541cc"],"state_sha256":"bc2368c9c913245548f3c42a95a8760ac013cad0b09d68bc124ddae212648278"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g5DyB6bSDlHNUgoG9YmNGVUMFLuJM0hzxCuuGgHfPbHnBintKAtt3pz3hmv50H5QDlzFjar3U3XyOCr40OLpCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T10:58:27.414592Z","bundle_sha256":"cc44f8eb285d8465402011c33988f1098503616fabca60486790ee63a96b94e8"}}