{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:MTUK6XT4BDVUMX5NMRW5EQP5MJ","short_pith_number":"pith:MTUK6XT4","canonical_record":{"source":{"id":"2005.01187","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-03T20:56:54Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"974fb854734f7302cb191bf8742ff8b8e8f4202fd812c5bb98977f80637b8f7d","abstract_canon_sha256":"fd76d389127f6c3f6dce623578790c9c361d3ebdf5071da82661ee1172e03004"},"schema_version":"1.0"},"canonical_sha256":"64e8af5e7c08eb465fad646dd241fd6256ea02863d54542c00847aa4b0720f25","source":{"kind":"arxiv","id":"2005.01187","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.01187","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"arxiv_version","alias_value":"2005.01187v2","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.01187","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"pith_short_12","alias_value":"MTUK6XT4BDVU","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"pith_short_16","alias_value":"MTUK6XT4BDVUMX5N","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"pith_short_8","alias_value":"MTUK6XT4","created_at":"2026-07-05T01:00:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:MTUK6XT4BDVUMX5NMRW5EQP5MJ","target":"record","payload":{"canonical_record":{"source":{"id":"2005.01187","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-03T20:56:54Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"974fb854734f7302cb191bf8742ff8b8e8f4202fd812c5bb98977f80637b8f7d","abstract_canon_sha256":"fd76d389127f6c3f6dce623578790c9c361d3ebdf5071da82661ee1172e03004"},"schema_version":"1.0"},"canonical_sha256":"64e8af5e7c08eb465fad646dd241fd6256ea02863d54542c00847aa4b0720f25","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:00:19.015831Z","signature_b64":"cpTg40TuRS/oryPSwlNTWKSqccPah75vfb+f6wr9WwMlL6LeLWK5uLTbgPDs4IcenI+FpyzgXY9Xshf2geKNAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64e8af5e7c08eb465fad646dd241fd6256ea02863d54542c00847aa4b0720f25","last_reissued_at":"2026-07-05T01:00:19.015407Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:00:19.015407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.01187","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:00:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g7i+Q6L8UduDrJJKb1UTadFHqTclxudNQj0XMgbg//LzRRdo441lADkbGYyHzHYHwdLqvdAZOv7foT1+TcLWDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:03:56.562883Z"},"content_sha256":"43b0cf18b51f0d4081cc30913d3fddde5aacb99ad556c6dd3428d3e990c01a8f","schema_version":"1.0","event_id":"sha256:43b0cf18b51f0d4081cc30913d3fddde5aacb99ad556c6dd3428d3e990c01a8f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:MTUK6XT4BDVUMX5NMRW5EQP5MJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Progress report on the Large Scale Polarization Explorer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.IM","authors_text":"A. Ba\\`u, A. Boscaleri, A. Coppolecchia, A. May, A. M. Baldini, A. Mennella, A. Paiella, A. Passerini, A. Rocchi, A. Schillaci, A. Tartari, A. Taylor, A. Volpe, A. Zacchei, B. Caccianiga, B. Siri, B. Watkins, C. Baccigalupi, C. Boragno, C. Franceschet, C. Tucker, D. Corsini, D. Grosso, D. Maino, D. Molinari, D. M. Vigano, D. Poletti, D. Vaccaro, E. Battistelli, E. Tommasi, F. Cavaliere, F. Cei, F. Columbro, F. Cuttaia, F. Del Torto, F. Farsian, F. Fontanelli, F. Gatti, F. Incardona, F. Nati, F. Paonessa, F. Pezzotta, F. Piacentini, F. Spinella, F. Villa, G. Addamo, G. Coppi, G. D'Alessandro, G. De Gasperis, G. Morgante, G. Pisano, G. Polenta, G. Presta, G. Signorelli, G. Virone, J. A. Rubi\\~no-Martin, K. A. Cleary, L. Lamagna, L. Pagano, L. Piccirillo, L. Polastri, L. Terenzi, M. Bersanelli, M. Biasotti, M. De Petris, M. Gervasi, M. Grassi, M. Jones, M. Maris, M. Perez-de-Taoro, M. Sandri, M. Soria, M. Tomasi, M. Zannoni, N. Krachmalnicoff, N. Reyes, N. Vittorio, O. A. Peverini, P. A. R. Ade, P. De Bernardis, P. Kangaslahti, P. M. Battaglia, P. Mena, P. Natoli, R. Genova-Santos, R. Gualtieri, R. Mainini, R. Molina, S. Caprioli, S. Mandelli, S. Masi, S. Matarrese, S. Realini, S. Sartor, T.C. Gaier, T. Ghigna, V. Fafone, V. Tapia, Z. Farooqui","submitted_at":"2020-05-03T20:56:54Z","abstract_excerpt":"The Large Scale Polarization Explorer (LSPE) is a cosmology program for the measurement of large scale curl-like features (B-modes) in the polarization of the Cosmic Microwave Background. Its goal is to constrain the background of inflationary gravity waves traveling through the universe at the time of matter-radiation decoupling. The two instruments of LSPE are meant to synergically operate by covering a large portion of the northern microwave sky. LSPE/STRIP is a coherent array of receivers planned to be operated from the Teide Observatory in Tenerife, for the control and characterization of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.01187","kind":"arxiv","version":2},"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/2005.01187/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":"2026-07-05T01:00:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nMDr0E50TfgjhJ7Z0DFSu3ovBccfe9g9Ge/yE37o1Sj2l132HAUn16WiT10VTwX0o5d++sRqEG4yuq+ODKuXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:03:56.563421Z"},"content_sha256":"18140b64d18a7ea14053862897dacc92518202dfdd1851fff0b367295e2dd8ab","schema_version":"1.0","event_id":"sha256:18140b64d18a7ea14053862897dacc92518202dfdd1851fff0b367295e2dd8ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ/bundle.json","state_url":"https://pith.science/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ/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":"2026-08-15T18:03:56Z","links":{"resolver":"https://pith.science/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ","bundle":"https://pith.science/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ/bundle.json","state":"https://pith.science/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MTUK6XT4BDVUMX5NMRW5EQP5MJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:MTUK6XT4BDVUMX5NMRW5EQP5MJ","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":"fd76d389127f6c3f6dce623578790c9c361d3ebdf5071da82661ee1172e03004","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-03T20:56:54Z","title_canon_sha256":"974fb854734f7302cb191bf8742ff8b8e8f4202fd812c5bb98977f80637b8f7d"},"schema_version":"1.0","source":{"id":"2005.01187","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.01187","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"arxiv_version","alias_value":"2005.01187v2","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.01187","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"pith_short_12","alias_value":"MTUK6XT4BDVU","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"pith_short_16","alias_value":"MTUK6XT4BDVUMX5N","created_at":"2026-07-05T01:00:19Z"},{"alias_kind":"pith_short_8","alias_value":"MTUK6XT4","created_at":"2026-07-05T01:00:19Z"}],"graph_snapshots":[{"event_id":"sha256:18140b64d18a7ea14053862897dacc92518202dfdd1851fff0b367295e2dd8ab","target":"graph","created_at":"2026-07-05T01:00:19Z","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/2005.01187/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Large Scale Polarization Explorer (LSPE) is a cosmology program for the measurement of large scale curl-like features (B-modes) in the polarization of the Cosmic Microwave Background. Its goal is to constrain the background of inflationary gravity waves traveling through the universe at the time of matter-radiation decoupling. The two instruments of LSPE are meant to synergically operate by covering a large portion of the northern microwave sky. LSPE/STRIP is a coherent array of receivers planned to be operated from the Teide Observatory in Tenerife, for the control and characterization of","authors_text":"A. Ba\\`u, A. Boscaleri, A. Coppolecchia, A. May, A. M. Baldini, A. Mennella, A. Paiella, A. Passerini, A. Rocchi, A. Schillaci, A. Tartari, A. Taylor, A. Volpe, A. Zacchei, B. Caccianiga, B. Siri, B. Watkins, C. Baccigalupi, C. Boragno, C. Franceschet, C. Tucker, D. Corsini, D. Grosso, D. Maino, D. Molinari, D. M. Vigano, D. Poletti, D. Vaccaro, E. Battistelli, E. Tommasi, F. Cavaliere, F. Cei, F. Columbro, F. Cuttaia, F. Del Torto, F. Farsian, F. Fontanelli, F. Gatti, F. Incardona, F. Nati, F. Paonessa, F. Pezzotta, F. Piacentini, F. Spinella, F. Villa, G. Addamo, G. Coppi, G. D'Alessandro, G. De Gasperis, G. Morgante, G. Pisano, G. Polenta, G. Presta, G. Signorelli, G. Virone, J. A. Rubi\\~no-Martin, K. A. Cleary, L. Lamagna, L. Pagano, L. Piccirillo, L. Polastri, L. Terenzi, M. Bersanelli, M. Biasotti, M. De Petris, M. Gervasi, M. Grassi, M. Jones, M. Maris, M. Perez-de-Taoro, M. Sandri, M. Soria, M. Tomasi, M. Zannoni, N. Krachmalnicoff, N. Reyes, N. Vittorio, O. A. Peverini, P. A. R. Ade, P. De Bernardis, P. Kangaslahti, P. M. Battaglia, P. Mena, P. Natoli, R. Genova-Santos, R. Gualtieri, R. Mainini, R. Molina, S. Caprioli, S. Mandelli, S. Masi, S. Matarrese, S. Realini, S. Sartor, T.C. Gaier, T. Ghigna, V. Fafone, V. Tapia, Z. Farooqui","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-03T20:56:54Z","title":"Progress report on the Large Scale Polarization Explorer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.01187","kind":"arxiv","version":2},"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":"sha256:43b0cf18b51f0d4081cc30913d3fddde5aacb99ad556c6dd3428d3e990c01a8f","target":"record","created_at":"2026-07-05T01:00:19Z","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":"fd76d389127f6c3f6dce623578790c9c361d3ebdf5071da82661ee1172e03004","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-03T20:56:54Z","title_canon_sha256":"974fb854734f7302cb191bf8742ff8b8e8f4202fd812c5bb98977f80637b8f7d"},"schema_version":"1.0","source":{"id":"2005.01187","kind":"arxiv","version":2}},"canonical_sha256":"64e8af5e7c08eb465fad646dd241fd6256ea02863d54542c00847aa4b0720f25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64e8af5e7c08eb465fad646dd241fd6256ea02863d54542c00847aa4b0720f25","first_computed_at":"2026-07-05T01:00:19.015407Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:00:19.015407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cpTg40TuRS/oryPSwlNTWKSqccPah75vfb+f6wr9WwMlL6LeLWK5uLTbgPDs4IcenI+FpyzgXY9Xshf2geKNAw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:00:19.015831Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.01187","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43b0cf18b51f0d4081cc30913d3fddde5aacb99ad556c6dd3428d3e990c01a8f","sha256:18140b64d18a7ea14053862897dacc92518202dfdd1851fff0b367295e2dd8ab"],"state_sha256":"95a02802342e058f06a5cf9a3102b74442f2f9e67d0be3fd3c20318bdcf0b2da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5L/hmxDX/5V4/8AYCRHG4dIvV3RGoRfAW6mrNJ1OdwP9yFsnDUxFH4TYzIoAIkefupaOWdPzJYVUi4fTIjmaDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T18:03:56.567529Z","bundle_sha256":"ad705cef8a25350120c90750e484e12aad2b4f05cdd53f598aabf05b919ab13a"}}