{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:VT7M7VNVJ6S5WF6NUYSF273GRH","short_pith_number":"pith:VT7M7VNV","canonical_record":{"source":{"id":"astro-ph/0105148","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-05-09T21:42:58Z","cross_cats_sorted":[],"title_canon_sha256":"b3a61e2d96c5d85c69e373db0a3778456fa07640fbfef4792f3be32483a1afcc","abstract_canon_sha256":"4b67c26dd7d80ffe56c86fe06cf1f154f4af7abf1cba188286e1c0a5973c665f"},"schema_version":"1.0"},"canonical_sha256":"acfecfd5b54fa5db17cda6245d7f6689d923424feeb09f8bdaf463c42243d7f9","source":{"kind":"arxiv","id":"astro-ph/0105148","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0105148","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0105148v1","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0105148","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"pith_short_12","alias_value":"VT7M7VNVJ6S5","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"pith_short_16","alias_value":"VT7M7VNVJ6S5WF6N","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"pith_short_8","alias_value":"VT7M7VNV","created_at":"2026-07-04T16:23:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:VT7M7VNVJ6S5WF6NUYSF273GRH","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0105148","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-05-09T21:42:58Z","cross_cats_sorted":[],"title_canon_sha256":"b3a61e2d96c5d85c69e373db0a3778456fa07640fbfef4792f3be32483a1afcc","abstract_canon_sha256":"4b67c26dd7d80ffe56c86fe06cf1f154f4af7abf1cba188286e1c0a5973c665f"},"schema_version":"1.0"},"canonical_sha256":"acfecfd5b54fa5db17cda6245d7f6689d923424feeb09f8bdaf463c42243d7f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:23:21.936906Z","signature_b64":"JbnuLaEHSCtyscyJUjwhFoFgwgVOQWYapsbp9B3BsGEptAon+CMY3Ly2VFqPxZgQddKrbL67dSFcZ0QVYIpNAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"acfecfd5b54fa5db17cda6245d7f6689d923424feeb09f8bdaf463c42243d7f9","last_reissued_at":"2026-07-04T16:23:21.936403Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:23:21.936403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0105148","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":"2026-07-04T16:23:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GDBMPCxQeszTPdbZb6llYHBkH6OsHYZhz9sem+G8aRGXHLaghiJCO2c13hwjYNjw1Pso7JankiJHcqVUtzmZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:32:37.141191Z"},"content_sha256":"3381bbf44935c74e818c8ca915a987735c8d0338a186c9bca50d36fa92cd3070","schema_version":"1.0","event_id":"sha256:3381bbf44935c74e818c8ca915a987735c8d0338a186c9bca50d36fa92cd3070"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:VT7M7VNVJ6S5WF6NUYSF273GRH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The BOOMERANG North America Instrument: a balloon-borne bolometric radiometer optimized for measurements of cosmic background radiation anisotropies from 0.3 to 4 degrees","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Boscaleri, A.E. Lange, A. Iacoangeli, A. Raccanelli, B.P. Crill, C.B. Netterfield, E.F. Hivon, E. Pascale, F. Piacentini, F. Scaramuzzi, G. De Troia, G. Romeo, H. Del Castillo, J.J. Bock, J. Ruhl, L. Miglio, M. Giacometti, P.A.R. Ade, P. Cardoni, P. De Bernardis, P.D. Mauskopf, P. Farese, P. Palangio, R. Bathia, S. Masi, S. Rao, V.V. Hristov","submitted_at":"2001-05-09T21:42:58Z","abstract_excerpt":"We describe the BOOMERANG North America (BNA) instrument, a balloon-borne bolometric radiometer designed to map the Cosmic Microwave Background (CMB) radiation with 0.3 deg resolution over a significant portion of the sky. This receiver employs new technologies in bolometers, readout electronics, millimeter-wave optics and filters, cryogenics, scan and attitude reconstruction. All these subsystems are described in detail in this paper. The system has been fully calibrated in flight using a variety of techniques which are described and compared. It has been able to obtain a measurement of the f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0105148","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/astro-ph/0105148/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":"2026-07-04T16:23:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YFv8Bg0JjIUXesVBxJwzU/ip/R4vjFdPFuz7h1HU4KhmbbmZw9P7e7OREHvOmBja6YCeLqK1auyFAIEw0SylDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:32:37.141693Z"},"content_sha256":"c2f1a9e7fb2d6c5f9850daa390dabc6c21a1f3abfde5790947f558d21ac4be6d","schema_version":"1.0","event_id":"sha256:c2f1a9e7fb2d6c5f9850daa390dabc6c21a1f3abfde5790947f558d21ac4be6d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VT7M7VNVJ6S5WF6NUYSF273GRH/bundle.json","state_url":"https://pith.science/pith/VT7M7VNVJ6S5WF6NUYSF273GRH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VT7M7VNVJ6S5WF6NUYSF273GRH/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":"2026-08-11T01:32:37Z","links":{"resolver":"https://pith.science/pith/VT7M7VNVJ6S5WF6NUYSF273GRH","bundle":"https://pith.science/pith/VT7M7VNVJ6S5WF6NUYSF273GRH/bundle.json","state":"https://pith.science/pith/VT7M7VNVJ6S5WF6NUYSF273GRH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VT7M7VNVJ6S5WF6NUYSF273GRH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:VT7M7VNVJ6S5WF6NUYSF273GRH","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":"4b67c26dd7d80ffe56c86fe06cf1f154f4af7abf1cba188286e1c0a5973c665f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-05-09T21:42:58Z","title_canon_sha256":"b3a61e2d96c5d85c69e373db0a3778456fa07640fbfef4792f3be32483a1afcc"},"schema_version":"1.0","source":{"id":"astro-ph/0105148","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0105148","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0105148v1","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0105148","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"pith_short_12","alias_value":"VT7M7VNVJ6S5","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"pith_short_16","alias_value":"VT7M7VNVJ6S5WF6N","created_at":"2026-07-04T16:23:21Z"},{"alias_kind":"pith_short_8","alias_value":"VT7M7VNV","created_at":"2026-07-04T16:23:21Z"}],"graph_snapshots":[{"event_id":"sha256:c2f1a9e7fb2d6c5f9850daa390dabc6c21a1f3abfde5790947f558d21ac4be6d","target":"graph","created_at":"2026-07-04T16:23:21Z","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/astro-ph/0105148/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe the BOOMERANG North America (BNA) instrument, a balloon-borne bolometric radiometer designed to map the Cosmic Microwave Background (CMB) radiation with 0.3 deg resolution over a significant portion of the sky. This receiver employs new technologies in bolometers, readout electronics, millimeter-wave optics and filters, cryogenics, scan and attitude reconstruction. All these subsystems are described in detail in this paper. The system has been fully calibrated in flight using a variety of techniques which are described and compared. It has been able to obtain a measurement of the f","authors_text":"A. Boscaleri, A.E. Lange, A. Iacoangeli, A. Raccanelli, B.P. Crill, C.B. Netterfield, E.F. Hivon, E. Pascale, F. Piacentini, F. Scaramuzzi, G. De Troia, G. Romeo, H. Del Castillo, J.J. Bock, J. Ruhl, L. Miglio, M. Giacometti, P.A.R. Ade, P. Cardoni, P. De Bernardis, P.D. Mauskopf, P. Farese, P. Palangio, R. Bathia, S. Masi, S. Rao, V.V. Hristov","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-05-09T21:42:58Z","title":"The BOOMERANG North America Instrument: a balloon-borne bolometric radiometer optimized for measurements of cosmic background radiation anisotropies from 0.3 to 4 degrees"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0105148","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":"sha256:3381bbf44935c74e818c8ca915a987735c8d0338a186c9bca50d36fa92cd3070","target":"record","created_at":"2026-07-04T16:23:21Z","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":"4b67c26dd7d80ffe56c86fe06cf1f154f4af7abf1cba188286e1c0a5973c665f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-05-09T21:42:58Z","title_canon_sha256":"b3a61e2d96c5d85c69e373db0a3778456fa07640fbfef4792f3be32483a1afcc"},"schema_version":"1.0","source":{"id":"astro-ph/0105148","kind":"arxiv","version":1}},"canonical_sha256":"acfecfd5b54fa5db17cda6245d7f6689d923424feeb09f8bdaf463c42243d7f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"acfecfd5b54fa5db17cda6245d7f6689d923424feeb09f8bdaf463c42243d7f9","first_computed_at":"2026-07-04T16:23:21.936403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:21.936403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JbnuLaEHSCtyscyJUjwhFoFgwgVOQWYapsbp9B3BsGEptAon+CMY3Ly2VFqPxZgQddKrbL67dSFcZ0QVYIpNAA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:21.936906Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0105148","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3381bbf44935c74e818c8ca915a987735c8d0338a186c9bca50d36fa92cd3070","sha256:c2f1a9e7fb2d6c5f9850daa390dabc6c21a1f3abfde5790947f558d21ac4be6d"],"state_sha256":"a17e2deb92e9f1e5c7d20610fe4e27a10a24f4074f8f9528b4bdae595e00a186"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RkEnp2t31GjZ0Heh0vfEhOKkE4o9700N/TTYqh3563rxABCfC4RvrdpyqlxJU8hBSVr1b6gWD8GsA9Y4M3OhDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T01:32:37.145312Z","bundle_sha256":"a7db6b5e1755c0c4124fe0c373f764848d6493fbe45544beb2447f5430b6aab5"}}