{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:WLUR43265AHMHQCPXHO7OEMDQ2","short_pith_number":"pith:WLUR4326","canonical_record":{"source":{"id":"2606.31898","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-30T16:06:57Z","cross_cats_sorted":[],"title_canon_sha256":"157b9ebeb493d456e2361a30d6b6e92ee70d2b9d869838ce7f364975d4c86cde","abstract_canon_sha256":"eed6c3da3354994bd9a07ab529785fdbd7ea7e3ccb19caae76f478c87f81e47a"},"schema_version":"1.0"},"canonical_sha256":"b2e91e6f5ee80ec3c04fb9ddf71183868626d02b619265d67cacf45cb56243e5","source":{"kind":"arxiv","id":"2606.31898","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31898","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31898v1","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31898","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"pith_short_12","alias_value":"WLUR43265AHM","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"pith_short_16","alias_value":"WLUR43265AHMHQCP","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"pith_short_8","alias_value":"WLUR4326","created_at":"2026-07-01T01:18:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:WLUR43265AHMHQCPXHO7OEMDQ2","target":"record","payload":{"canonical_record":{"source":{"id":"2606.31898","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-30T16:06:57Z","cross_cats_sorted":[],"title_canon_sha256":"157b9ebeb493d456e2361a30d6b6e92ee70d2b9d869838ce7f364975d4c86cde","abstract_canon_sha256":"eed6c3da3354994bd9a07ab529785fdbd7ea7e3ccb19caae76f478c87f81e47a"},"schema_version":"1.0"},"canonical_sha256":"b2e91e6f5ee80ec3c04fb9ddf71183868626d02b619265d67cacf45cb56243e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-01T01:18:18.878786Z","signature_b64":"SQrACr+t8yiVk/yIyVt4QWlFgv38qIbUJDqW5prE3PiJ7VIxwQXMLg5FC4ksfV/aZLsvjsT+jVveFgaNF8wYDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2e91e6f5ee80ec3c04fb9ddf71183868626d02b619265d67cacf45cb56243e5","last_reissued_at":"2026-07-01T01:18:18.878210Z","signature_status":"signed_v1","first_computed_at":"2026-07-01T01:18:18.878210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.31898","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":"2026-07-01T01:18:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"huOHQzuXwCgVY1h9GDQTqQE4hOdL+/uRajMec5ZOofYB3WG0D66wRjfJtr9vtMYFeMKDX0rb/kCw9DykWih7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T03:17:04.513423Z"},"content_sha256":"b31fcc134a8225873fc972712b097d5363332bb0201c6acf1275b59f08b365e6","schema_version":"1.0","event_id":"sha256:b31fcc134a8225873fc972712b097d5363332bb0201c6acf1275b59f08b365e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:WLUR43265AHMHQCPXHO7OEMDQ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mechanical Studies of an Additional Light Baffle for the LSST Camera","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Aaron Roodman, Aashay Pai, Alessio Taranto, Alexandre Boucaud, Alex Drlica-Wagner, Andrew P. Rasmussen, Douglas R. Neill, Gabriele Rodeghiero, Hannah Mary Margaret Pollek, John Andrew, Luca Rosignoli, Martin Nordby, Pierre Antilogus, Travis Lange","submitted_at":"2026-06-30T16:06:57Z","abstract_excerpt":"Commissioning the NSF-DOE Vera C. Rubin Observatory consisted of engineering operation and on-sky data-taking, initially with the Commissioning Camera followed by the commissioning run of the LSST Camera (LSSTCam). As with other wide-field astronomical projects, the Rubin team anticipated a significant amount of stray light effects which would necessitate investigation and systematic mitigation. This led the Rubin stray light working group to develop tools, including a robust model of the entire observatory in Zemax, to trace the light paths of stray light artifacts back to their sources. This"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31898","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/2606.31898/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":"2026-07-01T01:18:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YNZYiR0oZJhR+/TzmwJ1kpsjliLohftUU8DPmlEyKlfRIYCwKmJWgpLYr0rG7PCWm4OBdprDKtYvcwKrReSlBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T03:17:04.513818Z"},"content_sha256":"6a76ee9174b85fe3d8bd79f8e2495582928e9f9f88b7ad9fe003c3f7419c56b7","schema_version":"1.0","event_id":"sha256:6a76ee9174b85fe3d8bd79f8e2495582928e9f9f88b7ad9fe003c3f7419c56b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WLUR43265AHMHQCPXHO7OEMDQ2/bundle.json","state_url":"https://pith.science/pith/WLUR43265AHMHQCPXHO7OEMDQ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WLUR43265AHMHQCPXHO7OEMDQ2/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":"2026-07-02T03:17:04Z","links":{"resolver":"https://pith.science/pith/WLUR43265AHMHQCPXHO7OEMDQ2","bundle":"https://pith.science/pith/WLUR43265AHMHQCPXHO7OEMDQ2/bundle.json","state":"https://pith.science/pith/WLUR43265AHMHQCPXHO7OEMDQ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WLUR43265AHMHQCPXHO7OEMDQ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:WLUR43265AHMHQCPXHO7OEMDQ2","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":"eed6c3da3354994bd9a07ab529785fdbd7ea7e3ccb19caae76f478c87f81e47a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-30T16:06:57Z","title_canon_sha256":"157b9ebeb493d456e2361a30d6b6e92ee70d2b9d869838ce7f364975d4c86cde"},"schema_version":"1.0","source":{"id":"2606.31898","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31898","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31898v1","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31898","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"pith_short_12","alias_value":"WLUR43265AHM","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"pith_short_16","alias_value":"WLUR43265AHMHQCP","created_at":"2026-07-01T01:18:18Z"},{"alias_kind":"pith_short_8","alias_value":"WLUR4326","created_at":"2026-07-01T01:18:18Z"}],"graph_snapshots":[{"event_id":"sha256:6a76ee9174b85fe3d8bd79f8e2495582928e9f9f88b7ad9fe003c3f7419c56b7","target":"graph","created_at":"2026-07-01T01:18:18Z","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/2606.31898/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Commissioning the NSF-DOE Vera C. Rubin Observatory consisted of engineering operation and on-sky data-taking, initially with the Commissioning Camera followed by the commissioning run of the LSST Camera (LSSTCam). As with other wide-field astronomical projects, the Rubin team anticipated a significant amount of stray light effects which would necessitate investigation and systematic mitigation. This led the Rubin stray light working group to develop tools, including a robust model of the entire observatory in Zemax, to trace the light paths of stray light artifacts back to their sources. This","authors_text":"Aaron Roodman, Aashay Pai, Alessio Taranto, Alexandre Boucaud, Alex Drlica-Wagner, Andrew P. Rasmussen, Douglas R. Neill, Gabriele Rodeghiero, Hannah Mary Margaret Pollek, John Andrew, Luca Rosignoli, Martin Nordby, Pierre Antilogus, Travis Lange","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-30T16:06:57Z","title":"Mechanical Studies of an Additional Light Baffle for the LSST Camera"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31898","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:b31fcc134a8225873fc972712b097d5363332bb0201c6acf1275b59f08b365e6","target":"record","created_at":"2026-07-01T01:18:18Z","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":"eed6c3da3354994bd9a07ab529785fdbd7ea7e3ccb19caae76f478c87f81e47a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-30T16:06:57Z","title_canon_sha256":"157b9ebeb493d456e2361a30d6b6e92ee70d2b9d869838ce7f364975d4c86cde"},"schema_version":"1.0","source":{"id":"2606.31898","kind":"arxiv","version":1}},"canonical_sha256":"b2e91e6f5ee80ec3c04fb9ddf71183868626d02b619265d67cacf45cb56243e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2e91e6f5ee80ec3c04fb9ddf71183868626d02b619265d67cacf45cb56243e5","first_computed_at":"2026-07-01T01:18:18.878210Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-01T01:18:18.878210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SQrACr+t8yiVk/yIyVt4QWlFgv38qIbUJDqW5prE3PiJ7VIxwQXMLg5FC4ksfV/aZLsvjsT+jVveFgaNF8wYDQ==","signature_status":"signed_v1","signed_at":"2026-07-01T01:18:18.878786Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.31898","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b31fcc134a8225873fc972712b097d5363332bb0201c6acf1275b59f08b365e6","sha256:6a76ee9174b85fe3d8bd79f8e2495582928e9f9f88b7ad9fe003c3f7419c56b7"],"state_sha256":"50e3e3097e1d855504130b796398e9b563848b51cf55c81bf3daad05247e3325"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PqhVjCE9cQhhOv1cdzEwk/hshw/8UmriOIzFJrGz5KQY2gWSwQEcpHsalI+T8pNaZj1cclawtOsmUTYrC1FCCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T03:17:04.516249Z","bundle_sha256":"e27f77935d6e16a36470e8c51fe0bbe7d3b27b0e30b981b79a3ba25027a0f47c"}}