{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:FVTZ34IGTPKVA36QX5NECTDRAT","short_pith_number":"pith:FVTZ34IG","canonical_record":{"source":{"id":"2106.08031","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-06-15T10:31:28Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"a2de078c447820f516e82dc2d47f13b4febf3531263cdaa633c6c085aae2f55c","abstract_canon_sha256":"cc8c09d4e6cca11d12443d03470482027155853e5bbf975ffccb6ca7386eeca4"},"schema_version":"1.0"},"canonical_sha256":"2d679df1069bd5506fd0bf5a414c7104d9a0eede85a98ae543d9784ab3522991","source":{"kind":"arxiv","id":"2106.08031","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.08031","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"arxiv_version","alias_value":"2106.08031v3","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.08031","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"pith_short_12","alias_value":"FVTZ34IGTPKV","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"pith_short_16","alias_value":"FVTZ34IGTPKVA36Q","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"pith_short_8","alias_value":"FVTZ34IG","created_at":"2026-07-05T05:48:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:FVTZ34IGTPKVA36QX5NECTDRAT","target":"record","payload":{"canonical_record":{"source":{"id":"2106.08031","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-06-15T10:31:28Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"a2de078c447820f516e82dc2d47f13b4febf3531263cdaa633c6c085aae2f55c","abstract_canon_sha256":"cc8c09d4e6cca11d12443d03470482027155853e5bbf975ffccb6ca7386eeca4"},"schema_version":"1.0"},"canonical_sha256":"2d679df1069bd5506fd0bf5a414c7104d9a0eede85a98ae543d9784ab3522991","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:48:30.769082Z","signature_b64":"E4pOaHbaUaBkxDJg2E9zXKgL02nlYZ2lp+crSNdn96J++HjP6Gg511NYwZUHNr0mhYCPqRENzxZAQxYCCYviCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d679df1069bd5506fd0bf5a414c7104d9a0eede85a98ae543d9784ab3522991","last_reissued_at":"2026-07-05T05:48:30.768585Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:48:30.768585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.08031","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:48:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D4t5Bw8yckvS0hk3JeD19H4p4hRGf+GpZ9l/zQZ5WYiDbjBwKl7Fk0CL8wP8iJl5gg917n1Oj7OgEOJJtPD6BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:49:58.411890Z"},"content_sha256":"9ac8243db1fe9e0d6cea5b37d20f3fbbab3218dc84d18fc03a3cbffe0b3e5954","schema_version":"1.0","event_id":"sha256:9ac8243db1fe9e0d6cea5b37d20f3fbbab3218dc84d18fc03a3cbffe0b3e5954"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:FVTZ34IGTPKVA36QX5NECTDRAT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detailed study of HWP non-idealities and their impact on future measurements of CMB polarization anisotropies from space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Alessandro Gruppuso, Francesco Piacentini, Giampaolo Pisano, Guillaume Patanchon, Hirokazu Ishino, Josquin Errard, Luca Pagano, Martina Gerbino, Massimiliano Lattanzi, Paolo Natoli, Serena Giardiello","submitted_at":"2021-06-15T10:31:28Z","abstract_excerpt":"We study the propagation of a specific class of instrumental systematics to the reconstruction of the B-mode power spectrum of the cosmic microwave background (CMB). We focus on the non-idealities of the half-wave plate (HWP), a polarization modulator that is to be deployed by future CMB experiments, such as the phase-A satellite mission LiteBIRD. We study the effects of non-ideal HWP properties, such as transmittance, phase shift, and cross-polarization. To this end, we developed a simple, yet stand-alone end-to-end simulation pipeline adapted to LiteBIRD. We analyzed the effects of a possibl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.08031","kind":"arxiv","version":3},"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/2106.08031/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":"2026-07-05T05:48:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mfS2/NTdhkQa+Mor4reIURFvLYujX23bhWOz62uIc357haTws5zEn4//ldvBoAtqKO0LxKDTDwHKVmouoCtxCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:49:58.412275Z"},"content_sha256":"6e2dd2f1581664c59de4c767e32a10184fa9a94a526203fa09b77674b6b5f3b1","schema_version":"1.0","event_id":"sha256:6e2dd2f1581664c59de4c767e32a10184fa9a94a526203fa09b77674b6b5f3b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FVTZ34IGTPKVA36QX5NECTDRAT/bundle.json","state_url":"https://pith.science/pith/FVTZ34IGTPKVA36QX5NECTDRAT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FVTZ34IGTPKVA36QX5NECTDRAT/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":"2026-07-05T12:49:58Z","links":{"resolver":"https://pith.science/pith/FVTZ34IGTPKVA36QX5NECTDRAT","bundle":"https://pith.science/pith/FVTZ34IGTPKVA36QX5NECTDRAT/bundle.json","state":"https://pith.science/pith/FVTZ34IGTPKVA36QX5NECTDRAT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FVTZ34IGTPKVA36QX5NECTDRAT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:FVTZ34IGTPKVA36QX5NECTDRAT","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":"cc8c09d4e6cca11d12443d03470482027155853e5bbf975ffccb6ca7386eeca4","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-06-15T10:31:28Z","title_canon_sha256":"a2de078c447820f516e82dc2d47f13b4febf3531263cdaa633c6c085aae2f55c"},"schema_version":"1.0","source":{"id":"2106.08031","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.08031","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"arxiv_version","alias_value":"2106.08031v3","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.08031","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"pith_short_12","alias_value":"FVTZ34IGTPKV","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"pith_short_16","alias_value":"FVTZ34IGTPKVA36Q","created_at":"2026-07-05T05:48:30Z"},{"alias_kind":"pith_short_8","alias_value":"FVTZ34IG","created_at":"2026-07-05T05:48:30Z"}],"graph_snapshots":[{"event_id":"sha256:6e2dd2f1581664c59de4c767e32a10184fa9a94a526203fa09b77674b6b5f3b1","target":"graph","created_at":"2026-07-05T05:48:30Z","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/2106.08031/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the propagation of a specific class of instrumental systematics to the reconstruction of the B-mode power spectrum of the cosmic microwave background (CMB). We focus on the non-idealities of the half-wave plate (HWP), a polarization modulator that is to be deployed by future CMB experiments, such as the phase-A satellite mission LiteBIRD. We study the effects of non-ideal HWP properties, such as transmittance, phase shift, and cross-polarization. To this end, we developed a simple, yet stand-alone end-to-end simulation pipeline adapted to LiteBIRD. We analyzed the effects of a possibl","authors_text":"Alessandro Gruppuso, Francesco Piacentini, Giampaolo Pisano, Guillaume Patanchon, Hirokazu Ishino, Josquin Errard, Luca Pagano, Martina Gerbino, Massimiliano Lattanzi, Paolo Natoli, Serena Giardiello","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-06-15T10:31:28Z","title":"Detailed study of HWP non-idealities and their impact on future measurements of CMB polarization anisotropies from space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.08031","kind":"arxiv","version":3},"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":"sha256:9ac8243db1fe9e0d6cea5b37d20f3fbbab3218dc84d18fc03a3cbffe0b3e5954","target":"record","created_at":"2026-07-05T05:48:30Z","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":"cc8c09d4e6cca11d12443d03470482027155853e5bbf975ffccb6ca7386eeca4","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-06-15T10:31:28Z","title_canon_sha256":"a2de078c447820f516e82dc2d47f13b4febf3531263cdaa633c6c085aae2f55c"},"schema_version":"1.0","source":{"id":"2106.08031","kind":"arxiv","version":3}},"canonical_sha256":"2d679df1069bd5506fd0bf5a414c7104d9a0eede85a98ae543d9784ab3522991","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d679df1069bd5506fd0bf5a414c7104d9a0eede85a98ae543d9784ab3522991","first_computed_at":"2026-07-05T05:48:30.768585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:48:30.768585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E4pOaHbaUaBkxDJg2E9zXKgL02nlYZ2lp+crSNdn96J++HjP6Gg511NYwZUHNr0mhYCPqRENzxZAQxYCCYviCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:48:30.769082Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.08031","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ac8243db1fe9e0d6cea5b37d20f3fbbab3218dc84d18fc03a3cbffe0b3e5954","sha256:6e2dd2f1581664c59de4c767e32a10184fa9a94a526203fa09b77674b6b5f3b1"],"state_sha256":"9cd1ed7dc396c238b2e1b72013ab10119da574fe2cde18278f40f62c9f850162"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z0ldOS1hOUX8IxfoGJdQApLb959rD4b5GGaQ6yDovPJRcgvaSBq2J/chxUUBSzsS+Pb6LwZQ3SMjuyGV6QFFCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T12:49:58.414528Z","bundle_sha256":"1efcf3d0be0abea7bbd62fb17c00190716c76e58f73f87f72490a76671fd95e3"}}