{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:ILOA2XZGCUIYZFMJUJG5DDJ2WV","short_pith_number":"pith:ILOA2XZG","canonical_record":{"source":{"id":"2502.04209","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-02-06T16:49:33Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"a9e5cccdb5008a19d32a07e5bc53b7a8a2852716f660cde77190a0ebafc36703","abstract_canon_sha256":"92c62990b13cc05dcae49f284cdddfe0a9c7ce3735af1c40ab309c191d4bf767"},"schema_version":"1.0"},"canonical_sha256":"42dc0d5f2615118c9589a24dd18d3ab573787dceae30526e936771f327fe2a3e","source":{"kind":"arxiv","id":"2502.04209","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.04209","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"arxiv_version","alias_value":"2502.04209v2","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.04209","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"pith_short_12","alias_value":"ILOA2XZGCUIY","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"pith_short_16","alias_value":"ILOA2XZGCUIYZFMJ","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"pith_short_8","alias_value":"ILOA2XZG","created_at":"2026-07-05T10:53:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:ILOA2XZGCUIYZFMJUJG5DDJ2WV","target":"record","payload":{"canonical_record":{"source":{"id":"2502.04209","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-02-06T16:49:33Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"a9e5cccdb5008a19d32a07e5bc53b7a8a2852716f660cde77190a0ebafc36703","abstract_canon_sha256":"92c62990b13cc05dcae49f284cdddfe0a9c7ce3735af1c40ab309c191d4bf767"},"schema_version":"1.0"},"canonical_sha256":"42dc0d5f2615118c9589a24dd18d3ab573787dceae30526e936771f327fe2a3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:53:52.211981Z","signature_b64":"ORxuFpC3BnvuYZdmYvIhiNURT9rp72FklHNg86NdyVYfbtpnaMaeCMDMpLLkU9g8TK+HCfPByxo9rhTdnt3gDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42dc0d5f2615118c9589a24dd18d3ab573787dceae30526e936771f327fe2a3e","last_reissued_at":"2026-07-05T10:53:52.211409Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:53:52.211409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.04209","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":"2026-07-05T10:53:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zWWtvBRZNdNLQ0HFBD9ivk7etFia6ONki7K0Iy1ctfAs1kdcVKR/QcBulVIK3CzMnuAtRU26b3xn04mNguagCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T11:13:08.055828Z"},"content_sha256":"b7d9d23c1aaeca26fb26c8424e544b9c327bb25c5353d6a925539e38bfd76953","schema_version":"1.0","event_id":"sha256:b7d9d23c1aaeca26fb26c8424e544b9c327bb25c5353d6a925539e38bfd76953"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:ILOA2XZGCUIYZFMJUJG5DDJ2WV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radon Removal in XENONnT down to the Solar Neutrino Level","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Bismark, A. Brown, A. Deisting, A. D. Ferella, A. Elykov, A. Higuera, A. Kopec, A. Mancuso, A. Melchiorre, A. Michael, A. Molinario, A. P. Cimental Ch\\'avez, A. P. Colijn, A. Takeda, B. Andrieu, B. Paetsch, C. Cai, C. Capelli, C. Di Donato, C. D. Tunnell, C. Ferrari, C. Fuselli, C. Hils, C. Macolino, C. Peters, C. Szyszka, C. Weinheimer, C. Wittweg, D. Ant\\'on Martin, D. Koke, D. Ram\\'irez Garc\\'ia, D. Schulte, D. Thers, D. Wenz, D. Xu, E. Angelino, E. Aprile, E. Masson, F. Arneodo, F. Gao, F. I. Villazon Solar, F. Joerg, F. Lombardi, F. Marignetti, F. Semeria, F. T\\\"onnies, F. Toschi, G. Bruno, G. Plante, G. Sartorelli, G. Trinchero, G. Volta, G. Zavattini, H. Fischer, H. Guan, H. Landsman, H. Schulze Ei{\\ss}ing, H. Simgen, I. Li, I. Sarnoff, J. Aalbers, J. A. M. Lopes, J. Conrad, J. Grigat, J. Jakob, J. J. Cuenca-Garc\\'ia, J. Loizeau, J. Long, J. Mahlstedt, J. Masbou, J. Merz, J. M. F. dos Santos, J. M. R. Cardoso, J. M\\\"uller, J. Pienaar, J. Qi, J. Qin, J. Schreiner, J. Shi, J. Ye, K. Abe, K. Boese, K. Eitel, K. Liu, K. Martens, K. Miuchi, K. Mor{\\aa}, K. Ni, K. Valerius, L. Althueser, L. Baudis, L. Bellagamba, L. C. Daniel Garcia, L. Grandi, L. Hoetzsch, L. Levinson, L. Manenti, L. Principe, L. Sanchez, L. Scotto Lavina, L. Yang, L. Yuan, M. Bazyk, M. Flierman, M. Galloway, M. Guida, M. Iacovacci, M. Kara, M. Kobayashi, M. Lindner, M. Liu, M. Messina, M. Murra, M. P. Decowski, M. Pierre, M. Rajado, M. Schumann, M. Selvi, M. Silva, M. Weiss, M. Yamashita, M. Zhong, N. F. Hood, P. Di Gangi, P. Gaemers, P. Gyorgy, P. Kavrigin, P. Kharbanda, P.-L. Tan, P. Schulte, P. Shagin, Q. Pellegrini, R. Biondi, R. Budnik, R. F. Lang, R. Gaior, R. Giacomobono, R. Glade-Beucke, R. Hammann, R. Peres, R. Singh, S. Ahmed Maouloud, S. Diglio, S. el Morabit, S. Ghosh, S. Kazama, S. Li, S. Liang, S. Lindemann, S. Mastroianni, S. Moriyama, S. Shi, S. Vecchi, S. Vetter, T. Flehmke, T. Luce, T. Marrod\\'an Undagoitia, T. R. Pollmann, U. Oberlack, V. D'Andrea, V. H. S. Wu, W. Fulgione, Y. Itow, Y. Kaminaga, Y. Ma, Y. Mosbacher, Y. Pan, Y. Takeuchi, Y.-T. Lin, Y. Xing, Z. Liang, Z. Xu","submitted_at":"2025-02-06T16:49:33Z","abstract_excerpt":"The XENONnT experiment has achieved an exceptionally low $^\\text{222}$Rn activity concentration within its inner 5.9$\\,$tonne liquid xenon detector of (0.90$\\,\\pm\\,$0.01$\\,$stat.$\\,\\pm\\,$0.07 sys.)$\\,\\mu$Bq/kg, equivalent to about 430 $^\\text{222}$Rn atoms per tonne of xenon. This was achieved by active online radon removal via cryogenic distillation after stringent material selection. The achieved $^\\text{222}$Rn activity concentration is five times lower than that in other currently operational multi-tonne liquid xenon detectors engaged in dark matter searches. This breakthrough enables the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.04209","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/2502.04209/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":"2026-07-05T10:53:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b2BrKnzsafHM67TMVjmogZC7bZFH3VXlN7LQ5x0pyFWvo0nwsHsgBSdx5OsaMsXyhf3J5XAobk9ieQX1DQUyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T11:13:08.056551Z"},"content_sha256":"5175dd212e3cbfd9fa0baef243295ce7722bc8f2da676b023725cc1d56cafd72","schema_version":"1.0","event_id":"sha256:5175dd212e3cbfd9fa0baef243295ce7722bc8f2da676b023725cc1d56cafd72"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV/bundle.json","state_url":"https://pith.science/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV/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":"2026-08-05T11:13:08Z","links":{"resolver":"https://pith.science/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV","bundle":"https://pith.science/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV/bundle.json","state":"https://pith.science/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ILOA2XZGCUIYZFMJUJG5DDJ2WV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ILOA2XZGCUIYZFMJUJG5DDJ2WV","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":"92c62990b13cc05dcae49f284cdddfe0a9c7ce3735af1c40ab309c191d4bf767","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-02-06T16:49:33Z","title_canon_sha256":"a9e5cccdb5008a19d32a07e5bc53b7a8a2852716f660cde77190a0ebafc36703"},"schema_version":"1.0","source":{"id":"2502.04209","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.04209","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"arxiv_version","alias_value":"2502.04209v2","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.04209","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"pith_short_12","alias_value":"ILOA2XZGCUIY","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"pith_short_16","alias_value":"ILOA2XZGCUIYZFMJ","created_at":"2026-07-05T10:53:52Z"},{"alias_kind":"pith_short_8","alias_value":"ILOA2XZG","created_at":"2026-07-05T10:53:52Z"}],"graph_snapshots":[{"event_id":"sha256:5175dd212e3cbfd9fa0baef243295ce7722bc8f2da676b023725cc1d56cafd72","target":"graph","created_at":"2026-07-05T10:53:52Z","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/2502.04209/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The XENONnT experiment has achieved an exceptionally low $^\\text{222}$Rn activity concentration within its inner 5.9$\\,$tonne liquid xenon detector of (0.90$\\,\\pm\\,$0.01$\\,$stat.$\\,\\pm\\,$0.07 sys.)$\\,\\mu$Bq/kg, equivalent to about 430 $^\\text{222}$Rn atoms per tonne of xenon. This was achieved by active online radon removal via cryogenic distillation after stringent material selection. The achieved $^\\text{222}$Rn activity concentration is five times lower than that in other currently operational multi-tonne liquid xenon detectors engaged in dark matter searches. This breakthrough enables the ","authors_text":"A. Bismark, A. Brown, A. Deisting, A. D. Ferella, A. Elykov, A. Higuera, A. Kopec, A. Mancuso, A. Melchiorre, A. Michael, A. Molinario, A. P. Cimental Ch\\'avez, A. P. Colijn, A. Takeda, B. Andrieu, B. Paetsch, C. Cai, C. Capelli, C. Di Donato, C. D. Tunnell, C. Ferrari, C. Fuselli, C. Hils, C. Macolino, C. Peters, C. Szyszka, C. Weinheimer, C. Wittweg, D. Ant\\'on Martin, D. Koke, D. Ram\\'irez Garc\\'ia, D. Schulte, D. Thers, D. Wenz, D. Xu, E. Angelino, E. Aprile, E. Masson, F. Arneodo, F. Gao, F. I. Villazon Solar, F. Joerg, F. Lombardi, F. Marignetti, F. Semeria, F. T\\\"onnies, F. Toschi, G. Bruno, G. Plante, G. Sartorelli, G. Trinchero, G. Volta, G. Zavattini, H. Fischer, H. Guan, H. Landsman, H. Schulze Ei{\\ss}ing, H. Simgen, I. Li, I. Sarnoff, J. Aalbers, J. A. M. Lopes, J. Conrad, J. Grigat, J. Jakob, J. J. Cuenca-Garc\\'ia, J. Loizeau, J. Long, J. Mahlstedt, J. Masbou, J. Merz, J. M. F. dos Santos, J. M. R. Cardoso, J. M\\\"uller, J. Pienaar, J. Qi, J. Qin, J. Schreiner, J. Shi, J. Ye, K. Abe, K. Boese, K. Eitel, K. Liu, K. Martens, K. Miuchi, K. Mor{\\aa}, K. Ni, K. Valerius, L. Althueser, L. Baudis, L. Bellagamba, L. C. Daniel Garcia, L. Grandi, L. Hoetzsch, L. Levinson, L. Manenti, L. Principe, L. Sanchez, L. Scotto Lavina, L. Yang, L. Yuan, M. Bazyk, M. Flierman, M. Galloway, M. Guida, M. Iacovacci, M. Kara, M. Kobayashi, M. Lindner, M. Liu, M. Messina, M. Murra, M. P. Decowski, M. Pierre, M. Rajado, M. Schumann, M. Selvi, M. Silva, M. Weiss, M. Yamashita, M. Zhong, N. F. Hood, P. Di Gangi, P. Gaemers, P. Gyorgy, P. Kavrigin, P. Kharbanda, P.-L. Tan, P. Schulte, P. Shagin, Q. Pellegrini, R. Biondi, R. Budnik, R. F. Lang, R. Gaior, R. Giacomobono, R. Glade-Beucke, R. Hammann, R. Peres, R. Singh, S. Ahmed Maouloud, S. Diglio, S. el Morabit, S. Ghosh, S. Kazama, S. Li, S. Liang, S. Lindemann, S. Mastroianni, S. Moriyama, S. Shi, S. Vecchi, S. Vetter, T. Flehmke, T. Luce, T. Marrod\\'an Undagoitia, T. R. Pollmann, U. Oberlack, V. D'Andrea, V. H. S. Wu, W. Fulgione, Y. Itow, Y. Kaminaga, Y. Ma, Y. Mosbacher, Y. Pan, Y. Takeuchi, Y.-T. Lin, Y. Xing, Z. Liang, Z. Xu","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-02-06T16:49:33Z","title":"Radon Removal in XENONnT down to the Solar Neutrino Level"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.04209","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:b7d9d23c1aaeca26fb26c8424e544b9c327bb25c5353d6a925539e38bfd76953","target":"record","created_at":"2026-07-05T10:53:52Z","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":"92c62990b13cc05dcae49f284cdddfe0a9c7ce3735af1c40ab309c191d4bf767","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-02-06T16:49:33Z","title_canon_sha256":"a9e5cccdb5008a19d32a07e5bc53b7a8a2852716f660cde77190a0ebafc36703"},"schema_version":"1.0","source":{"id":"2502.04209","kind":"arxiv","version":2}},"canonical_sha256":"42dc0d5f2615118c9589a24dd18d3ab573787dceae30526e936771f327fe2a3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42dc0d5f2615118c9589a24dd18d3ab573787dceae30526e936771f327fe2a3e","first_computed_at":"2026-07-05T10:53:52.211409Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:53:52.211409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ORxuFpC3BnvuYZdmYvIhiNURT9rp72FklHNg86NdyVYfbtpnaMaeCMDMpLLkU9g8TK+HCfPByxo9rhTdnt3gDw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:53:52.211981Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.04209","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b7d9d23c1aaeca26fb26c8424e544b9c327bb25c5353d6a925539e38bfd76953","sha256:5175dd212e3cbfd9fa0baef243295ce7722bc8f2da676b023725cc1d56cafd72"],"state_sha256":"951931d3abf9a85c6eb64b175cf7cd2a70544c2c65304fef615426425bd42e39"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KRhhC+bekPlfo3uLVeV4qxmr9qzlqm01GKPllGIFk6L/mPqZ04nknuwmzedWBATOWRsbmSjQ8U9kM57GffU+AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T11:13:08.060854Z","bundle_sha256":"30a4a53905ec9f5616d7086819f957af0afeb87edbc1043b229d6c20f7c7303f"}}