{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:FM767ARBXXXMMX5DT2CPCU2LKB","short_pith_number":"pith:FM767ARB","canonical_record":{"source":{"id":"2106.09695","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ex","submitted_at":"2021-06-17T17:50:09Z","cross_cats_sorted":[],"title_canon_sha256":"30b2b61ec1b32841b49ea441859c370c74bceb3f12e4560d7731b4dc0897d1bb","abstract_canon_sha256":"edec183143df6225b822d50b6294447416ec9c6886c6f2707a1784275e23735b"},"schema_version":"1.0"},"canonical_sha256":"2b3fef8221bdeec65fa39e84f1534b505b9662d902fd6944dcfcfa910e23b595","source":{"kind":"arxiv","id":"2106.09695","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.09695","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"arxiv_version","alias_value":"2106.09695v3","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.09695","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"pith_short_12","alias_value":"FM767ARBXXXM","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"pith_short_16","alias_value":"FM767ARBXXXMMX5D","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"pith_short_8","alias_value":"FM767ARB","created_at":"2026-07-05T03:08:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:FM767ARBXXXMMX5DT2CPCU2LKB","target":"record","payload":{"canonical_record":{"source":{"id":"2106.09695","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ex","submitted_at":"2021-06-17T17:50:09Z","cross_cats_sorted":[],"title_canon_sha256":"30b2b61ec1b32841b49ea441859c370c74bceb3f12e4560d7731b4dc0897d1bb","abstract_canon_sha256":"edec183143df6225b822d50b6294447416ec9c6886c6f2707a1784275e23735b"},"schema_version":"1.0"},"canonical_sha256":"2b3fef8221bdeec65fa39e84f1534b505b9662d902fd6944dcfcfa910e23b595","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:08:34.288217Z","signature_b64":"ofuR4Ow1nHBZBUd1JquwcKu2t4rG7ZNEVueb3JB0RmUbRPd0c0uEhDc7hJRqY/IWE8/onEzw2f8AV3bKIkUFDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b3fef8221bdeec65fa39e84f1534b505b9662d902fd6944dcfcfa910e23b595","last_reissued_at":"2026-07-05T03:08:34.287784Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:08:34.287784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.09695","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":"2026-07-05T03:08:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lb6qgM7ZGAKZrRn8Sw8Yng4SylsAjkIAU/l9yjAfb2PmFJAMCN0pssKNbtSJR/Xp6SX6WXESiZlQKUQ2m0wVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:06:51.177091Z"},"content_sha256":"bad159b4669dfb222fdf1dafc8e917784c3d7d3307522c4aafa490c3240becf5","schema_version":"1.0","event_id":"sha256:bad159b4669dfb222fdf1dafc8e917784c3d7d3307522c4aafa490c3240becf5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:FM767ARBXXXMMX5DT2CPCU2LKB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search for the Decay $B_s^0 \\rightarrow \\eta^\\prime \\eta$","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. B. Kaliyar, A. Bozek, A. Chen, A. Frey, A. Garmash, A. Giri, A. Ishikawa, A. Korobov, A. Kuzmin, A. Natochii, A. Rostomyan, A. Sangal, A. Vossen, B. Bhuyan, B. D. Yabsley, Belle Collaboration: N. K. Nisar, B. G. Cheon, B. G. Fulsom, B. Shwartz, C. Hadjivasiliou, C. H. Kim, C. H. Wang, C. Kiesling, C.-L. Hsu, C. MacQueen, C. P. Shen, C. Schwanda, C. Sharma, C. W. Joo, D. Cinabro, D. Epifanov, D. Ferlewicz, D. Liventsev, D. M. Asner, D. Matvienko, D. Sahoo, D. \\v{C}ervenkov, D. Y. Kim, E. Kovalenko, E. Prencipe, E. Solovieva, E. Waheed, E. Won, F. Di Capua, F. Metzner, F. Simon, F. Tenchini, G. B. Mohanty, G. Bonvicini, G. De Nardo, G. Karyan, G. Pakhlova, G. Russo, G. Schnell, G. Varner, H. Aihara, H. Atmacan, H. E. Cho, H. Hayashii, H. Kichimi, H. Ono, H. Park, H. Ye, I. Adachi, J. Bennett, J. Biswal, J.-G. Shiu, J. Kahn, J. Libby, J. Schueler, J. S. Lange, K. Chilikin, K. Cho, K. Gudkova, K. Hayasaka, K. H. Kang, K. Inami, K. Kinoshita, K. K. Joo, K. Kumara, K. Lalwani, K. Lieret, K. Nishimura, K. Senyo, K. Tanida, K. Trabelsi, L. E. Piilonen, L. Li Gioi, L. Nayak, L. Santelj, M. Bessner, M. Bra\\v{c}ko, M. Campajola, M.-C. Chang, M. E. Sevior, M. Iwasaki, M. Kumar, M. Masuda, M. Merola, M. Nakao, M. Nayak, M. R\\\"ohrken, M. Shapkin, M. Stari\\v{c}, M. Sumihama, M. Takizawa, M. T. Hedges, M. T. Prim, M. Uchida, M.-Z. Wang, N. Dash, N. Gabyshev, N. Rout, O. Hartbrich, P. Behera, P. Goldenzweig, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Oskin, P. Pakhlov, P. Urquijo, P. Wang, R. Ayad, R. Dhamija, R. Garg, R. Itoh, R. Kroeger, R. Kumar, R. Mizuk, R. Pestotnik, R. van Tonder, S. Al Said, S. Bahinipati, S. B. Yang, S. Choudhury, S. C. Lee, S. Cunliffe, S. Das, S. Dubey, S. Eidelman, S. Halder, S. H. Kim, S.-H. Park, S. Jia, S.-K. Choi, S. Korpar, S. Mohanty, S. Nishida, S. Ogawa, S. Pardi, S. Patra, S. Paul, S. Sandilya, S. Stani\\v{c}, S. Uno, S. Watanuki, T. Aushev, T. Bilka, T. E. Browder, T. Ferber, T. Hara, T. Iijima, T. Kawasaki, T. Konno, T. K. Pedlar, T. Kuhr, T. Matsuda, T. Pang, T. Podobnik, T. Sanuki, T. Sumiyoshi, T. Uglov, T. V. Dong, U. Tamponi, V. Babu, V. Bhardwaj, V. Chekelian, V. Gaur, V. Savinov, V. Zhilich, V. Zhukova, W. W. Jacobs, W. Yan, X. L. Wang, X. Xu, Y. B. Li, Y. Choi, Y. Guan, Y. Iwasaki, Y. Jin, Y.-J. Kwon, Y.-K. Kim, Y. Onuki, Y. Seino, Y. Unno, Z. Dole\\v{z}al, Z. P. Zhang, Z. S. Stottler","submitted_at":"2021-06-17T17:50:09Z","abstract_excerpt":"We report the results of the first search for the decay $B_s^0 \\rightarrow \\eta^\\prime \\eta$ using $121.4~\\textrm{fb}^{-1}$ of data collected at the $\\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe no significant signal and set a 90\\% confidence-level upper limit of %$7.1 \\times 10^{-5}$ $6.5 \\times 10^{-5}$ on the branching fraction of this decay."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.09695","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/2106.09695/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":"2026-07-05T03:08:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A8D0UQafjkWEg2gNUjJmJvjVovSm21NSVIA85phY4tRcsYi5gZ8GcQVpXu4WprsKRgNqdcR8/efOvcyR0hw9CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:06:51.177493Z"},"content_sha256":"c19d6d807f45b9d48443b56c0d5538626e42e24fcf08272b4504d6c2b9bf4ecf","schema_version":"1.0","event_id":"sha256:c19d6d807f45b9d48443b56c0d5538626e42e24fcf08272b4504d6c2b9bf4ecf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FM767ARBXXXMMX5DT2CPCU2LKB/bundle.json","state_url":"https://pith.science/pith/FM767ARBXXXMMX5DT2CPCU2LKB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FM767ARBXXXMMX5DT2CPCU2LKB/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":"2026-07-05T12:06:51Z","links":{"resolver":"https://pith.science/pith/FM767ARBXXXMMX5DT2CPCU2LKB","bundle":"https://pith.science/pith/FM767ARBXXXMMX5DT2CPCU2LKB/bundle.json","state":"https://pith.science/pith/FM767ARBXXXMMX5DT2CPCU2LKB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FM767ARBXXXMMX5DT2CPCU2LKB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:FM767ARBXXXMMX5DT2CPCU2LKB","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":"edec183143df6225b822d50b6294447416ec9c6886c6f2707a1784275e23735b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ex","submitted_at":"2021-06-17T17:50:09Z","title_canon_sha256":"30b2b61ec1b32841b49ea441859c370c74bceb3f12e4560d7731b4dc0897d1bb"},"schema_version":"1.0","source":{"id":"2106.09695","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.09695","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"arxiv_version","alias_value":"2106.09695v3","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.09695","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"pith_short_12","alias_value":"FM767ARBXXXM","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"pith_short_16","alias_value":"FM767ARBXXXMMX5D","created_at":"2026-07-05T03:08:34Z"},{"alias_kind":"pith_short_8","alias_value":"FM767ARB","created_at":"2026-07-05T03:08:34Z"}],"graph_snapshots":[{"event_id":"sha256:c19d6d807f45b9d48443b56c0d5538626e42e24fcf08272b4504d6c2b9bf4ecf","target":"graph","created_at":"2026-07-05T03:08:34Z","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/2106.09695/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the results of the first search for the decay $B_s^0 \\rightarrow \\eta^\\prime \\eta$ using $121.4~\\textrm{fb}^{-1}$ of data collected at the $\\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe no significant signal and set a 90\\% confidence-level upper limit of %$7.1 \\times 10^{-5}$ $6.5 \\times 10^{-5}$ on the branching fraction of this decay.","authors_text":"A. B. Kaliyar, A. Bozek, A. Chen, A. Frey, A. Garmash, A. Giri, A. Ishikawa, A. Korobov, A. Kuzmin, A. Natochii, A. Rostomyan, A. Sangal, A. Vossen, B. Bhuyan, B. D. Yabsley, Belle Collaboration: N. K. Nisar, B. G. Cheon, B. G. Fulsom, B. Shwartz, C. Hadjivasiliou, C. H. Kim, C. H. Wang, C. Kiesling, C.-L. Hsu, C. MacQueen, C. P. Shen, C. Schwanda, C. Sharma, C. W. Joo, D. Cinabro, D. Epifanov, D. Ferlewicz, D. Liventsev, D. M. Asner, D. Matvienko, D. Sahoo, D. \\v{C}ervenkov, D. Y. Kim, E. Kovalenko, E. Prencipe, E. Solovieva, E. Waheed, E. Won, F. Di Capua, F. Metzner, F. Simon, F. Tenchini, G. B. Mohanty, G. Bonvicini, G. De Nardo, G. Karyan, G. Pakhlova, G. Russo, G. Schnell, G. Varner, H. Aihara, H. Atmacan, H. E. Cho, H. Hayashii, H. Kichimi, H. Ono, H. Park, H. Ye, I. Adachi, J. Bennett, J. Biswal, J.-G. Shiu, J. Kahn, J. Libby, J. Schueler, J. S. Lange, K. Chilikin, K. Cho, K. Gudkova, K. Hayasaka, K. H. Kang, K. Inami, K. Kinoshita, K. K. Joo, K. Kumara, K. Lalwani, K. Lieret, K. Nishimura, K. Senyo, K. Tanida, K. Trabelsi, L. E. Piilonen, L. Li Gioi, L. Nayak, L. Santelj, M. Bessner, M. Bra\\v{c}ko, M. Campajola, M.-C. Chang, M. E. Sevior, M. Iwasaki, M. Kumar, M. Masuda, M. Merola, M. Nakao, M. Nayak, M. R\\\"ohrken, M. Shapkin, M. Stari\\v{c}, M. Sumihama, M. Takizawa, M. T. Hedges, M. T. Prim, M. Uchida, M.-Z. Wang, N. Dash, N. Gabyshev, N. Rout, O. Hartbrich, P. Behera, P. Goldenzweig, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Oskin, P. Pakhlov, P. Urquijo, P. Wang, R. Ayad, R. Dhamija, R. Garg, R. Itoh, R. Kroeger, R. Kumar, R. Mizuk, R. Pestotnik, R. van Tonder, S. Al Said, S. Bahinipati, S. B. Yang, S. Choudhury, S. C. Lee, S. Cunliffe, S. Das, S. Dubey, S. Eidelman, S. Halder, S. H. Kim, S.-H. Park, S. Jia, S.-K. Choi, S. Korpar, S. Mohanty, S. Nishida, S. Ogawa, S. Pardi, S. Patra, S. Paul, S. Sandilya, S. Stani\\v{c}, S. Uno, S. Watanuki, T. Aushev, T. Bilka, T. E. Browder, T. Ferber, T. Hara, T. Iijima, T. Kawasaki, T. Konno, T. K. Pedlar, T. Kuhr, T. Matsuda, T. Pang, T. Podobnik, T. Sanuki, T. Sumiyoshi, T. Uglov, T. V. Dong, U. Tamponi, V. Babu, V. Bhardwaj, V. Chekelian, V. Gaur, V. Savinov, V. Zhilich, V. Zhukova, W. W. Jacobs, W. Yan, X. L. Wang, X. Xu, Y. B. Li, Y. Choi, Y. Guan, Y. Iwasaki, Y. Jin, Y.-J. Kwon, Y.-K. Kim, Y. Onuki, Y. Seino, Y. Unno, Z. Dole\\v{z}al, Z. P. Zhang, Z. S. Stottler","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ex","submitted_at":"2021-06-17T17:50:09Z","title":"Search for the Decay $B_s^0 \\rightarrow \\eta^\\prime \\eta$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.09695","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:bad159b4669dfb222fdf1dafc8e917784c3d7d3307522c4aafa490c3240becf5","target":"record","created_at":"2026-07-05T03:08:34Z","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":"edec183143df6225b822d50b6294447416ec9c6886c6f2707a1784275e23735b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ex","submitted_at":"2021-06-17T17:50:09Z","title_canon_sha256":"30b2b61ec1b32841b49ea441859c370c74bceb3f12e4560d7731b4dc0897d1bb"},"schema_version":"1.0","source":{"id":"2106.09695","kind":"arxiv","version":3}},"canonical_sha256":"2b3fef8221bdeec65fa39e84f1534b505b9662d902fd6944dcfcfa910e23b595","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2b3fef8221bdeec65fa39e84f1534b505b9662d902fd6944dcfcfa910e23b595","first_computed_at":"2026-07-05T03:08:34.287784Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:08:34.287784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ofuR4Ow1nHBZBUd1JquwcKu2t4rG7ZNEVueb3JB0RmUbRPd0c0uEhDc7hJRqY/IWE8/onEzw2f8AV3bKIkUFDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:08:34.288217Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.09695","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bad159b4669dfb222fdf1dafc8e917784c3d7d3307522c4aafa490c3240becf5","sha256:c19d6d807f45b9d48443b56c0d5538626e42e24fcf08272b4504d6c2b9bf4ecf"],"state_sha256":"b3cfdadb6ab18ec68291e372d6be0823dbde52edf0bbeb68d1402a819a3fb04e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XSFYrT62RvjfntnuLLEQw1xWyjpmHqAFKKuxpbzZUBf4sVWeMeVE3jCna9sJtBdHuo5B0XlSL5Mvr62o/sYLAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T12:06:51.179538Z","bundle_sha256":"44b58479b6d15fa9ed224c7674a561ad8b707bfb59af93d08dc53e2cacc312ca"}}