{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:J73DF6KMEIPZZZ7HYUF3VIUQXK","short_pith_number":"pith:J73DF6KM","canonical_record":{"source":{"id":"2007.14876","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-07-29T14:52:46Z","cross_cats_sorted":[],"title_canon_sha256":"db68054572fb68b6e7592719436e524088c6b26941c2cc2a253ed221cc93be6a","abstract_canon_sha256":"48d1db0732cd61a17f81226a81265fe6d1cbfb69d935a4ca32fd3f8696212dcc"},"schema_version":"1.0"},"canonical_sha256":"4ff632f94c221f9ce7e7c50bbaa290ba8cdff19634fd6ced03493dad3384ebfc","source":{"kind":"arxiv","id":"2007.14876","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.14876","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"arxiv_version","alias_value":"2007.14876v2","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.14876","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"pith_short_12","alias_value":"J73DF6KMEIPZ","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"pith_short_16","alias_value":"J73DF6KMEIPZZZ7H","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"pith_short_8","alias_value":"J73DF6KM","created_at":"2026-07-05T03:11:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:J73DF6KMEIPZZZ7HYUF3VIUQXK","target":"record","payload":{"canonical_record":{"source":{"id":"2007.14876","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-07-29T14:52:46Z","cross_cats_sorted":[],"title_canon_sha256":"db68054572fb68b6e7592719436e524088c6b26941c2cc2a253ed221cc93be6a","abstract_canon_sha256":"48d1db0732cd61a17f81226a81265fe6d1cbfb69d935a4ca32fd3f8696212dcc"},"schema_version":"1.0"},"canonical_sha256":"4ff632f94c221f9ce7e7c50bbaa290ba8cdff19634fd6ced03493dad3384ebfc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:11:25.263015Z","signature_b64":"eXjgidl4mWFA4fTrOAmsgp3ItfXRdtp0cj7miQRgmcKTdtW4SXyPxWUAswlgO4fq7iRZcdWzKfNNTMw8Rz8MCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ff632f94c221f9ce7e7c50bbaa290ba8cdff19634fd6ced03493dad3384ebfc","last_reissued_at":"2026-07-05T03:11:25.262533Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:11:25.262533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.14876","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":"2026-07-05T03:11:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ev5QINXpWsAkJybzbAd3GcQt02f0dntrd/FOjf5Bj8XH8Rz1d4yvtexe1QhB3FJwb6BvN0SMZ6O2eIGB8kLBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:24:02.548983Z"},"content_sha256":"6ee3c91a6d13944f68877154c3238365e1c00291d31babbfe095e0ddc166d5d2","schema_version":"1.0","event_id":"sha256:6ee3c91a6d13944f68877154c3238365e1c00291d31babbfe095e0ddc166d5d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:J73DF6KMEIPZZZ7HYUF3VIUQXK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reducing Scattered Light in LIGO's Third Observing Run","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. A. Ciobanu, A. Ananyeva, A. Bramley, A. Buikema, A. C. Green, A. D. Viets, A Effler, A. F. Brooks, A. Fernandez-Galiana, A. F. Helmling-Cornell, A L Urban, A. M. Baer, A. Mullavey, A Pele, A. P. Lundgren, A. P. Spencer, B. B. Lane, B. J. J. Slagmolen, B. K. Berger, B. Lantz, B. Sorazu, B. Weaver, B. Willke, C. Adams, C Austin, C. Cahillane, C. C. Wipf, C. D. Blair, C. Di Fronzo, C. Gray, C. I. Torrie, C. J. Perez, C. L. Romel, C. M. Mow-Lowry, C. Osthelder, C. Vorvick, C. Whittle, D. Barker, D. Bhattacharjee, D. C. Coyne, D. C. Vander-Hyde, D. Davis, D. D. Brown, D. E. McClelland, D. J. Ottaway, D. M. Macleod, D. Schaetzl, D. Sellers, D. Sigg, D. V. Martynov, E. Goetz, E. J. Sanchez, E. K. Gustafson, E. L. Merilh, E. Payne, E. Schwartz, F. Clara, F. Matichard, F. Meylahn, G. Billingsley, G Gonzalez, G. L. Mansell, G. Mendell, G. Moreno, G. Traylor, G. Vajente, G Valdes, G. Venugopalan, Hang Yu, Haocun Yu, H. Overmier, H. Radkins, H. Yamamoto, J. A. Giaime, J. Bartlett, J. Betzwieser, J C Driggers, J. D. Jones, J. Feicht, J. G. Rollins, J. Hanks, J. Hanson, J. H. Romie, J. Leviton, J. Liu, J. McIver, J. Oberling, J. R. Palamos, J. R. Smith, J. S. Areeda, J. S. Kissel, J. Warner, J. W. Richardson, J. Zweizig, K. Arai, K. A. Strain, K. A. Thorne, K. C. Cannon, K. D. Giardina, K. E. Ramirez, K. Kawabe, K. L. Dooley, K. Mason, K. Merfeld, K. R. Corley, K. Riles, K. Ryan, K. Toland, K. Venkateswara, L. Barsotti, L. E. H. Datrier, L. E. Sanchez, L. K. Nuttall, L. McCuller, L. Sun, L. Xiao, L. Zhang, M. Ball, M. C. Heintze, M. Evans, M. E. Zucker, M. Fyffe, M. J. Szczepa\\'nczyk, M. Kasprzack, M. Landry, M. Laxen, M. Lormand, M. MacInnis, M. Pirello, M. P. Ross, M. Thomas, M. Tse, M. Wade, N. A. Holland, N. A. Robertson, N. Bode, N. Kijbunchoo, N. Mavalvala, P. B. Covas, P. Booker, P. Dupej, P. Fritschel, P. Fulda, P. Godwin, P. J. King, P. J. Veitch, P. Nguyen, P. Thomas, R. Abbott, Rahul Kumar, R. Bork, R. Gray, R. Gustafson, Richard J. Oram, R. K. Hasskew, R. L. Savage, R. L. Ward, R. Macas, R. M. Blair, R. McCarthy, R. Mittleman, R M S Schofield, R. Penhorwood, R. Schnabel, R. Weiss, R. X. Adhikari, S. Appert, S. Banagiri, S. Biscans, S. E. Dwyer, S. Gras, S. J. Cooper, S. Kandhasamy, S. Karki, S. M\\'arka, S. M. Aston, S. McCormick, S. Mozzon, S Soni, S. T. Countryman, S. W. Ballmer, T. Etzel, T. Hardwick, T. J. Massinger, T. J. N. Nelson, T. McRae, T. M. Evans, T. Mistry, T. R. Saravanan, T. Sadecki, T. Shaffer, T. Vo, V V Frolov, W. Parker, X. Chen, Y. Asali, Y. K. Lecoeuche, Z. M\\'arka","submitted_at":"2020-07-29T14:52:46Z","abstract_excerpt":"Noise due to scattered light has been a frequent disturbance in the Advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary scatter noise caused by low frequency motion can be recognized as arches in the time-frequency plane of the gravitational wave channel. In this paper, we characterize the scattering noise for LIGO's third observing run O3 from April, 2019 to March, 2020. We find at least two different populations of scattering noise and we investigate the multiple origins of one of them as well as its mitigation. We find that relative"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.14876","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/2007.14876/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":"2026-07-05T03:11:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3mNSzHfRWRMdMiiLpf6pftMuXoHIgW/kaFKRcIhkhDXoMHX21pmOlMXIKPz7TRz9la38WsWRNEoxH92gdXXPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:24:02.549389Z"},"content_sha256":"fabf731f12374bad35895d8909d9d7147d77fa7fd763cb2329c6df36efc9a3e3","schema_version":"1.0","event_id":"sha256:fabf731f12374bad35895d8909d9d7147d77fa7fd763cb2329c6df36efc9a3e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK/bundle.json","state_url":"https://pith.science/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK/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":"2026-07-05T09:24:02Z","links":{"resolver":"https://pith.science/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK","bundle":"https://pith.science/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK/bundle.json","state":"https://pith.science/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J73DF6KMEIPZZZ7HYUF3VIUQXK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:J73DF6KMEIPZZZ7HYUF3VIUQXK","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":"48d1db0732cd61a17f81226a81265fe6d1cbfb69d935a4ca32fd3f8696212dcc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-07-29T14:52:46Z","title_canon_sha256":"db68054572fb68b6e7592719436e524088c6b26941c2cc2a253ed221cc93be6a"},"schema_version":"1.0","source":{"id":"2007.14876","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.14876","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"arxiv_version","alias_value":"2007.14876v2","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.14876","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"pith_short_12","alias_value":"J73DF6KMEIPZ","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"pith_short_16","alias_value":"J73DF6KMEIPZZZ7H","created_at":"2026-07-05T03:11:25Z"},{"alias_kind":"pith_short_8","alias_value":"J73DF6KM","created_at":"2026-07-05T03:11:25Z"}],"graph_snapshots":[{"event_id":"sha256:fabf731f12374bad35895d8909d9d7147d77fa7fd763cb2329c6df36efc9a3e3","target":"graph","created_at":"2026-07-05T03:11:25Z","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/2007.14876/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Noise due to scattered light has been a frequent disturbance in the Advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary scatter noise caused by low frequency motion can be recognized as arches in the time-frequency plane of the gravitational wave channel. In this paper, we characterize the scattering noise for LIGO's third observing run O3 from April, 2019 to March, 2020. We find at least two different populations of scattering noise and we investigate the multiple origins of one of them as well as its mitigation. We find that relative","authors_text":"A. A. Ciobanu, A. Ananyeva, A. Bramley, A. Buikema, A. C. Green, A. D. Viets, A Effler, A. F. Brooks, A. Fernandez-Galiana, A. F. Helmling-Cornell, A L Urban, A. M. Baer, A. Mullavey, A Pele, A. P. Lundgren, A. P. Spencer, B. B. Lane, B. J. J. Slagmolen, B. K. Berger, B. Lantz, B. Sorazu, B. Weaver, B. Willke, C. Adams, C Austin, C. Cahillane, C. C. Wipf, C. D. Blair, C. Di Fronzo, C. Gray, C. I. Torrie, C. J. Perez, C. L. Romel, C. M. Mow-Lowry, C. Osthelder, C. Vorvick, C. Whittle, D. Barker, D. Bhattacharjee, D. C. Coyne, D. C. Vander-Hyde, D. Davis, D. D. Brown, D. E. McClelland, D. J. Ottaway, D. M. Macleod, D. Schaetzl, D. Sellers, D. Sigg, D. V. Martynov, E. Goetz, E. J. Sanchez, E. K. Gustafson, E. L. Merilh, E. Payne, E. Schwartz, F. Clara, F. Matichard, F. Meylahn, G. Billingsley, G Gonzalez, G. L. Mansell, G. Mendell, G. Moreno, G. Traylor, G. Vajente, G Valdes, G. Venugopalan, Hang Yu, Haocun Yu, H. Overmier, H. Radkins, H. Yamamoto, J. A. Giaime, J. Bartlett, J. Betzwieser, J C Driggers, J. D. Jones, J. Feicht, J. G. Rollins, J. Hanks, J. Hanson, J. H. Romie, J. Leviton, J. Liu, J. McIver, J. Oberling, J. R. Palamos, J. R. Smith, J. S. Areeda, J. S. Kissel, J. Warner, J. W. Richardson, J. Zweizig, K. Arai, K. A. Strain, K. A. Thorne, K. C. Cannon, K. D. Giardina, K. E. Ramirez, K. Kawabe, K. L. Dooley, K. Mason, K. Merfeld, K. R. Corley, K. Riles, K. Ryan, K. Toland, K. Venkateswara, L. Barsotti, L. E. H. Datrier, L. E. Sanchez, L. K. Nuttall, L. McCuller, L. Sun, L. Xiao, L. Zhang, M. Ball, M. C. Heintze, M. Evans, M. E. Zucker, M. Fyffe, M. J. Szczepa\\'nczyk, M. Kasprzack, M. Landry, M. Laxen, M. Lormand, M. MacInnis, M. Pirello, M. P. Ross, M. Thomas, M. Tse, M. Wade, N. A. Holland, N. A. Robertson, N. Bode, N. Kijbunchoo, N. Mavalvala, P. B. Covas, P. Booker, P. Dupej, P. Fritschel, P. Fulda, P. Godwin, P. J. King, P. J. Veitch, P. Nguyen, P. Thomas, R. Abbott, Rahul Kumar, R. Bork, R. Gray, R. Gustafson, Richard J. Oram, R. K. Hasskew, R. L. Savage, R. L. Ward, R. Macas, R. M. Blair, R. McCarthy, R. Mittleman, R M S Schofield, R. Penhorwood, R. Schnabel, R. Weiss, R. X. Adhikari, S. Appert, S. Banagiri, S. Biscans, S. E. Dwyer, S. Gras, S. J. Cooper, S. Kandhasamy, S. Karki, S. M\\'arka, S. M. Aston, S. McCormick, S. Mozzon, S Soni, S. T. Countryman, S. W. Ballmer, T. Etzel, T. Hardwick, T. J. Massinger, T. J. N. Nelson, T. McRae, T. M. Evans, T. Mistry, T. R. Saravanan, T. Sadecki, T. Shaffer, T. Vo, V V Frolov, W. Parker, X. Chen, Y. Asali, Y. K. Lecoeuche, Z. M\\'arka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-07-29T14:52:46Z","title":"Reducing Scattered Light in LIGO's Third Observing Run"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.14876","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":"sha256:6ee3c91a6d13944f68877154c3238365e1c00291d31babbfe095e0ddc166d5d2","target":"record","created_at":"2026-07-05T03:11:25Z","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":"48d1db0732cd61a17f81226a81265fe6d1cbfb69d935a4ca32fd3f8696212dcc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-07-29T14:52:46Z","title_canon_sha256":"db68054572fb68b6e7592719436e524088c6b26941c2cc2a253ed221cc93be6a"},"schema_version":"1.0","source":{"id":"2007.14876","kind":"arxiv","version":2}},"canonical_sha256":"4ff632f94c221f9ce7e7c50bbaa290ba8cdff19634fd6ced03493dad3384ebfc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ff632f94c221f9ce7e7c50bbaa290ba8cdff19634fd6ced03493dad3384ebfc","first_computed_at":"2026-07-05T03:11:25.262533Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:11:25.262533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eXjgidl4mWFA4fTrOAmsgp3ItfXRdtp0cj7miQRgmcKTdtW4SXyPxWUAswlgO4fq7iRZcdWzKfNNTMw8Rz8MCg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:11:25.263015Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.14876","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ee3c91a6d13944f68877154c3238365e1c00291d31babbfe095e0ddc166d5d2","sha256:fabf731f12374bad35895d8909d9d7147d77fa7fd763cb2329c6df36efc9a3e3"],"state_sha256":"fe942bb53a0be17a38fa5ae0d5edcbea636ce488671288628be16bd176ccd180"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m3mulIkeY8gD/6v5BDg+MkrcFspeCi/SK97e6dUAHxRieCFcsnz5/GVTpzL/kN8HaV9O/QXtIa4e3pGzBNmtBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T09:24:02.551536Z","bundle_sha256":"72d969bf785b056fd3969dde9ed300b59d6bbe3d60b943efc58cea52f2b1555a"}}