{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:RWDL2LAYE5OH7NXPNR62VUY73Y","short_pith_number":"pith:RWDL2LAY","canonical_record":{"source":{"id":"2208.05022","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-08-09T19:56:17Z","cross_cats_sorted":[],"title_canon_sha256":"64375d4e934e52f21a5d07eb98f960a3ff748df4cb6b722164bb8038c1c93e7a","abstract_canon_sha256":"b5fb04526781b272e80ff57eb1775449a77ce59190e2e4fe2b6fb4bf039c891c"},"schema_version":"1.0"},"canonical_sha256":"8d86bd2c18275c7fb6ef6c7daad31fde2d5bf94354afb32846d85dcddc2cb92d","source":{"kind":"arxiv","id":"2208.05022","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.05022","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"2208.05022v1","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.05022","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"RWDL2LAYE5OH","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"pith_short_16","alias_value":"RWDL2LAYE5OH7NXP","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"pith_short_8","alias_value":"RWDL2LAY","created_at":"2026-07-05T04:47:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:RWDL2LAYE5OH7NXPNR62VUY73Y","target":"record","payload":{"canonical_record":{"source":{"id":"2208.05022","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-08-09T19:56:17Z","cross_cats_sorted":[],"title_canon_sha256":"64375d4e934e52f21a5d07eb98f960a3ff748df4cb6b722164bb8038c1c93e7a","abstract_canon_sha256":"b5fb04526781b272e80ff57eb1775449a77ce59190e2e4fe2b6fb4bf039c891c"},"schema_version":"1.0"},"canonical_sha256":"8d86bd2c18275c7fb6ef6c7daad31fde2d5bf94354afb32846d85dcddc2cb92d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:47:31.209346Z","signature_b64":"Mww+ihbg6u5ltSppxdyCBtjpWQwDjQBx4bMRQ36JBwvhHhZeIt8/+85F1UYp1IjhJ6dkqpZ7Vfnw0Gxu49tIAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8d86bd2c18275c7fb6ef6c7daad31fde2d5bf94354afb32846d85dcddc2cb92d","last_reissued_at":"2026-07-05T04:47:31.208873Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:47:31.208873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2208.05022","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":"2026-07-05T04:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L207p7i/h/chxrpu8FdqP2iWHuv74Y2rtjYUizF63BZbj3a4I+nIWOWpV9/Cb/xXmVnZBXjAuiGMzLB7eiYxDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T09:34:54.881067Z"},"content_sha256":"5180d1836b526bd8ae049716b7ec7aaa0bc7ca60932527a5f8686a61ac317d2b","schema_version":"1.0","event_id":"sha256:5180d1836b526bd8ae049716b7ec7aaa0bc7ca60932527a5f8686a61ac317d2b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:RWDL2LAYE5OH7NXPNR62VUY73Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology Large Angular Scale Surveyor (CLASS): Pointing Stability and Beam Measurements at 90, 150, and 220 GHz","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Carolina N\\'u\\~nez, David T. Chuss, Duncan J. Watts, Edward J. Wollack, Jeffrey Iuliano, John W. Appel, Joseph Cleary, Joseph R. Eimer, Jullianna D. Couto, Karwan Rostem, Matthew A. Petroff, Michael K. Brewer, Rahul Datta, Ricardo Bustos, Sumit Dahal, Thomas Essinger-Hileman, Tobias A. Marriage, Yunyang Li, Zhilei Xu","submitted_at":"2022-08-09T19:56:17Z","abstract_excerpt":"The Cosmology Large Angular Scale Surveyor (CLASS) telescope array surveys 75% of the sky from the Atacama desert in Chile at frequency bands centered near 40, 90, 150, and 220 GHz. CLASS measures the largest-angular-scale CMB polarization with the aim of constraining the tensor-to-scalar ratio, measuring the optical depth to reionization to near the cosmic variance limit, and more. The CLASS Q-band (40 GHz), W-band (90 GHz), and dichroic high frequency (150/220 GHz) telescopes have been observing since June 2016, May 2018, and September 2019, respectively. On-sky optical characterization of t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.05022","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/2208.05022/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":"2026-07-05T04:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RUZdaHXooUIu83inzXodMtD052+LMkSB1f0I26RbJPVzblW294rGhHRrdT5+wRJaWWafJad/lElwsC0kJ5/CBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T09:34:54.881430Z"},"content_sha256":"9984b09758565932ec3e9c1e116482d396eb51a69e73b652209f0e592153ba90","schema_version":"1.0","event_id":"sha256:9984b09758565932ec3e9c1e116482d396eb51a69e73b652209f0e592153ba90"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RWDL2LAYE5OH7NXPNR62VUY73Y/bundle.json","state_url":"https://pith.science/pith/RWDL2LAYE5OH7NXPNR62VUY73Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RWDL2LAYE5OH7NXPNR62VUY73Y/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":"2026-08-14T09:34:54Z","links":{"resolver":"https://pith.science/pith/RWDL2LAYE5OH7NXPNR62VUY73Y","bundle":"https://pith.science/pith/RWDL2LAYE5OH7NXPNR62VUY73Y/bundle.json","state":"https://pith.science/pith/RWDL2LAYE5OH7NXPNR62VUY73Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RWDL2LAYE5OH7NXPNR62VUY73Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:RWDL2LAYE5OH7NXPNR62VUY73Y","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":"b5fb04526781b272e80ff57eb1775449a77ce59190e2e4fe2b6fb4bf039c891c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-08-09T19:56:17Z","title_canon_sha256":"64375d4e934e52f21a5d07eb98f960a3ff748df4cb6b722164bb8038c1c93e7a"},"schema_version":"1.0","source":{"id":"2208.05022","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.05022","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"2208.05022v1","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.05022","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"RWDL2LAYE5OH","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"pith_short_16","alias_value":"RWDL2LAYE5OH7NXP","created_at":"2026-07-05T04:47:31Z"},{"alias_kind":"pith_short_8","alias_value":"RWDL2LAY","created_at":"2026-07-05T04:47:31Z"}],"graph_snapshots":[{"event_id":"sha256:9984b09758565932ec3e9c1e116482d396eb51a69e73b652209f0e592153ba90","target":"graph","created_at":"2026-07-05T04:47:31Z","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/2208.05022/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Cosmology Large Angular Scale Surveyor (CLASS) telescope array surveys 75% of the sky from the Atacama desert in Chile at frequency bands centered near 40, 90, 150, and 220 GHz. CLASS measures the largest-angular-scale CMB polarization with the aim of constraining the tensor-to-scalar ratio, measuring the optical depth to reionization to near the cosmic variance limit, and more. The CLASS Q-band (40 GHz), W-band (90 GHz), and dichroic high frequency (150/220 GHz) telescopes have been observing since June 2016, May 2018, and September 2019, respectively. On-sky optical characterization of t","authors_text":"Carolina N\\'u\\~nez, David T. Chuss, Duncan J. Watts, Edward J. Wollack, Jeffrey Iuliano, John W. Appel, Joseph Cleary, Joseph R. Eimer, Jullianna D. Couto, Karwan Rostem, Matthew A. Petroff, Michael K. Brewer, Rahul Datta, Ricardo Bustos, Sumit Dahal, Thomas Essinger-Hileman, Tobias A. Marriage, Yunyang Li, Zhilei Xu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-08-09T19:56:17Z","title":"Cosmology Large Angular Scale Surveyor (CLASS): Pointing Stability and Beam Measurements at 90, 150, and 220 GHz"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.05022","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":"sha256:5180d1836b526bd8ae049716b7ec7aaa0bc7ca60932527a5f8686a61ac317d2b","target":"record","created_at":"2026-07-05T04:47:31Z","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":"b5fb04526781b272e80ff57eb1775449a77ce59190e2e4fe2b6fb4bf039c891c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-08-09T19:56:17Z","title_canon_sha256":"64375d4e934e52f21a5d07eb98f960a3ff748df4cb6b722164bb8038c1c93e7a"},"schema_version":"1.0","source":{"id":"2208.05022","kind":"arxiv","version":1}},"canonical_sha256":"8d86bd2c18275c7fb6ef6c7daad31fde2d5bf94354afb32846d85dcddc2cb92d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d86bd2c18275c7fb6ef6c7daad31fde2d5bf94354afb32846d85dcddc2cb92d","first_computed_at":"2026-07-05T04:47:31.208873Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:47:31.208873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mww+ihbg6u5ltSppxdyCBtjpWQwDjQBx4bMRQ36JBwvhHhZeIt8/+85F1UYp1IjhJ6dkqpZ7Vfnw0Gxu49tIAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:47:31.209346Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.05022","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5180d1836b526bd8ae049716b7ec7aaa0bc7ca60932527a5f8686a61ac317d2b","sha256:9984b09758565932ec3e9c1e116482d396eb51a69e73b652209f0e592153ba90"],"state_sha256":"4662f5ba25cd48ecc251d2a493d770a8c3ee5a42e72daf7135ab26aff2ee0089"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qNIxAiAAt3vcI0GGlfcZwU0c5CUqfppm98v1EbpZQFXn79k4dxvxpCKZc0BR+3zxGK1d+Q2eT+GC2W8O2DlyAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T09:34:54.884893Z","bundle_sha256":"ee655eced1ff7e8828c83043ac8e7cc54c87dd7af828e7d504a8f041409a5fe2"}}