{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:NNLMEY7AJMX3R5WKJJIIO3PGFO","short_pith_number":"pith:NNLMEY7A","canonical_record":{"source":{"id":"2206.07773","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-15T19:17:41Z","cross_cats_sorted":[],"title_canon_sha256":"5857b43d67947a07b9f0b0b499737688b525e7d604012f4a56707e80c5a7328a","abstract_canon_sha256":"fdd7a5fe91847958f10326eae0fbf93cf952dda663b385d38342491d88c74abc"},"schema_version":"1.0"},"canonical_sha256":"6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51","source":{"kind":"arxiv","id":"2206.07773","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.07773","created_at":"2026-05-17T23:38:47Z"},{"alias_kind":"arxiv_version","alias_value":"2206.07773v2","created_at":"2026-05-17T23:38:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.07773","created_at":"2026-05-17T23:38:47Z"},{"alias_kind":"pith_short_12","alias_value":"NNLMEY7AJMX3","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"NNLMEY7AJMX3R5WK","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"NNLMEY7A","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:NNLMEY7AJMX3R5WKJJIIO3PGFO","target":"record","payload":{"canonical_record":{"source":{"id":"2206.07773","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-15T19:17:41Z","cross_cats_sorted":[],"title_canon_sha256":"5857b43d67947a07b9f0b0b499737688b525e7d604012f4a56707e80c5a7328a","abstract_canon_sha256":"fdd7a5fe91847958f10326eae0fbf93cf952dda663b385d38342491d88c74abc"},"schema_version":"1.0"},"canonical_sha256":"6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:38:47.013014Z","signature_b64":"qAd/v9dwBq/xBGQkWsGPHof7bffoi0ASFw0k2xhGi285yBCT0ClxS+qh+u9sp/u+OO2CB1SqpiSSJZfSMOqbDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51","last_reissued_at":"2026-05-17T23:38:47.012334Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:38:47.012334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.07773","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":"2026-05-17T23:38:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pEtRG95rmtMyxvPtKNWxkcdoQbkKLI4LRwyKSjWXiy+SmtCRb2/DiI7XvBqLqQLt/BSgeqOqMh9RFfRuLBShAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:13:41.001693Z"},"content_sha256":"e553ee2e7e5792efa9dcb51e1af276bf342551375d9a0d8dd6894589f4fd42fc","schema_version":"1.0","event_id":"sha256:e553ee2e7e5792efa9dcb51e1af276bf342551375d9a0d8dd6894589f4fd42fc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:NNLMEY7AJMX3R5WKJJIIO3PGFO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CMB lensing from Planck PR4 maps","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date.","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Antony Lewis, Julien Carron, Mark Mirmelstein","submitted_at":"2022-06-15T19:17:41Z","abstract_excerpt":"We reconstruct the Cosmic Microwave Background (CMB) lensing potential on the latest Planck CMB PR4 (NPIPE) maps, which include slightly more data than the 2018 PR3 release, and implement quadratic estimators using more optimal filtering. We increase the reconstruction signal to noise by almost $20\\%$, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to $1.004 \\pm 0.024$ ($68\\%$ limits), which is the tightest constraint on the CMB lensing power spectrum to date. For a base $\\Lambda$CDM cosmology we find $\\sigma_8 \\Omega_m^{0.25} = 0"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We increase the reconstruction signal to noise by almost 20%, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to 1.004 ± 0.024 (68% limits), which is the tightest constraint on the CMB lensing power spectrum to date.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That residual systematics and foregrounds in the PR4 maps are sufficiently controlled by the more optimal filtering so that the reported 20% S/N gain and amplitude constraint are not biased.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"6e3194f5600ebe5e9b2f012acde43b4ed769b214755a8924000d602d193b5067"},"source":{"id":"2206.07773","kind":"arxiv","version":2},"verdict":{"id":"d06f7802-33d9-41e7-8c3f-c57cd742629e","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T18:08:05.391499Z","strongest_claim":"We increase the reconstruction signal to noise by almost 20%, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to 1.004 ± 0.024 (68% limits), which is the tightest constraint on the CMB lensing power spectrum to date.","one_line_summary":"Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That residual systematics and foregrounds in the PR4 maps are sufficiently controlled by the more optimal filtering so that the reported 20% S/N gain and amplitude constraint are not biased.","pith_extraction_headline":"Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date."},"references":{"count":50,"sample":[{"doi":"","year":2018,"title":"Aghanimet al.(Planck), Planck 2018 results","work_id":"5278b88c-6196-4e7b-b5dc-f7081c48d6fb","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2016,"title":"The Atacama Cosmology Telescope: Two-Season ACTPol Lensing Power Spectrum","work_id":"fffddbdb-b6ba-4370-9112-1767bceaeeab","ref_index":2,"cited_arxiv_id":"1611.09753","is_internal_anchor":true},{"doi":"","year":2020,"title":"Bianchini et al","work_id":"a70f8913-0a32-413a-b131-42ead6fd3934","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2019,"title":"W. L. K. Wu et al., A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg2 of SPTpol Temperature and Polarization Data, Astrophys. J. 884, 70 (2019), arXiv","work_id":"b4072231-4847-4dc1-82f3-3f7cbc00e0f1","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"Darwish et al., The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross- correlation with BOSS-CMASS galaxies, Mon","work_id":"62c786b0-22ef-40f1-9943-25359329d1ec","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":50,"snapshot_sha256":"965f8d6187a07df879c85938612563758fd6a709799fe7a53f1a531eb8f9ee30","internal_anchors":35},"formal_canon":{"evidence_count":2,"snapshot_sha256":"6a4026bee132533caea2601ad99499cea37a17cf35c55f06ff7468846553033d"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":"d06f7802-33d9-41e7-8c3f-c57cd742629e"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:38:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uVvubkY0sakn0KI89Xm/KqlTN+hYcU23doUviB/82OWhBoSJtUk0bUmitEe+yRzdSfiYTgQ2BUhccicHjrP+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:13:41.002527Z"},"content_sha256":"755ce5cb8c6b803cf96209945dd988ebfe9076df431dc2bb9fc60eed16d2f6a2","schema_version":"1.0","event_id":"sha256:755ce5cb8c6b803cf96209945dd988ebfe9076df431dc2bb9fc60eed16d2f6a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO/bundle.json","state_url":"https://pith.science/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO/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":"2026-05-31T20:13:41Z","links":{"resolver":"https://pith.science/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO","bundle":"https://pith.science/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO/bundle.json","state":"https://pith.science/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:NNLMEY7AJMX3R5WKJJIIO3PGFO","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":"fdd7a5fe91847958f10326eae0fbf93cf952dda663b385d38342491d88c74abc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-15T19:17:41Z","title_canon_sha256":"5857b43d67947a07b9f0b0b499737688b525e7d604012f4a56707e80c5a7328a"},"schema_version":"1.0","source":{"id":"2206.07773","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.07773","created_at":"2026-05-17T23:38:47Z"},{"alias_kind":"arxiv_version","alias_value":"2206.07773v2","created_at":"2026-05-17T23:38:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.07773","created_at":"2026-05-17T23:38:47Z"},{"alias_kind":"pith_short_12","alias_value":"NNLMEY7AJMX3","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"NNLMEY7AJMX3R5WK","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"NNLMEY7A","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:755ce5cb8c6b803cf96209945dd988ebfe9076df431dc2bb9fc60eed16d2f6a2","target":"graph","created_at":"2026-05-17T23:38:47Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"We increase the reconstruction signal to noise by almost 20%, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to 1.004 ± 0.024 (68% limits), which is the tightest constraint on the CMB lensing power spectrum to date."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"That residual systematics and foregrounds in the PR4 maps are sufficiently controlled by the more optimal filtering so that the reported 20% S/N gain and amplitude constraint are not biased."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date."}],"snapshot_sha256":"6e3194f5600ebe5e9b2f012acde43b4ed769b214755a8924000d602d193b5067"},"formal_canon":{"evidence_count":2,"snapshot_sha256":"6a4026bee132533caea2601ad99499cea37a17cf35c55f06ff7468846553033d"},"paper":{"abstract_excerpt":"We reconstruct the Cosmic Microwave Background (CMB) lensing potential on the latest Planck CMB PR4 (NPIPE) maps, which include slightly more data than the 2018 PR3 release, and implement quadratic estimators using more optimal filtering. We increase the reconstruction signal to noise by almost $20\\%$, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to $1.004 \\pm 0.024$ ($68\\%$ limits), which is the tightest constraint on the CMB lensing power spectrum to date. For a base $\\Lambda$CDM cosmology we find $\\sigma_8 \\Omega_m^{0.25} = 0","authors_text":"Antony Lewis, Julien Carron, Mark Mirmelstein","cross_cats":[],"headline":"Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-15T19:17:41Z","title":"CMB lensing from Planck PR4 maps"},"references":{"count":50,"internal_anchors":35,"resolved_work":50,"sample":[{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":1,"title":"Aghanimet al.(Planck), Planck 2018 results","work_id":"5278b88c-6196-4e7b-b5dc-f7081c48d6fb","year":2018},{"cited_arxiv_id":"1611.09753","doi":"","is_internal_anchor":true,"ref_index":2,"title":"The Atacama Cosmology Telescope: Two-Season ACTPol Lensing Power Spectrum","work_id":"fffddbdb-b6ba-4370-9112-1767bceaeeab","year":2016},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":3,"title":"Bianchini et al","work_id":"a70f8913-0a32-413a-b131-42ead6fd3934","year":2020},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":4,"title":"W. L. K. Wu et al., A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg2 of SPTpol Temperature and Polarization Data, Astrophys. J. 884, 70 (2019), arXiv","work_id":"b4072231-4847-4dc1-82f3-3f7cbc00e0f1","year":2019},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":5,"title":"Darwish et al., The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross- correlation with BOSS-CMASS galaxies, Mon","work_id":"62c786b0-22ef-40f1-9943-25359329d1ec","year":2020}],"snapshot_sha256":"965f8d6187a07df879c85938612563758fd6a709799fe7a53f1a531eb8f9ee30"},"source":{"id":"2206.07773","kind":"arxiv","version":2},"verdict":{"created_at":"2026-05-16T18:08:05.391499Z","id":"d06f7802-33d9-41e7-8c3f-c57cd742629e","model_set":{"reader":"grok-4.3"},"one_line_summary":"Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date.","strongest_claim":"We increase the reconstruction signal to noise by almost 20%, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to 1.004 ± 0.024 (68% limits), which is the tightest constraint on the CMB lensing power spectrum to date.","weakest_assumption":"That residual systematics and foregrounds in the PR4 maps are sufficiently controlled by the more optimal filtering so that the reported 20% S/N gain and amplitude constraint are not biased."}},"verdict_id":"d06f7802-33d9-41e7-8c3f-c57cd742629e"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e553ee2e7e5792efa9dcb51e1af276bf342551375d9a0d8dd6894589f4fd42fc","target":"record","created_at":"2026-05-17T23:38:47Z","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":"fdd7a5fe91847958f10326eae0fbf93cf952dda663b385d38342491d88c74abc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-15T19:17:41Z","title_canon_sha256":"5857b43d67947a07b9f0b0b499737688b525e7d604012f4a56707e80c5a7328a"},"schema_version":"1.0","source":{"id":"2206.07773","kind":"arxiv","version":2}},"canonical_sha256":"6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51","first_computed_at":"2026-05-17T23:38:47.012334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:38:47.012334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qAd/v9dwBq/xBGQkWsGPHof7bffoi0ASFw0k2xhGi285yBCT0ClxS+qh+u9sp/u+OO2CB1SqpiSSJZfSMOqbDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:38:47.013014Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.07773","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e553ee2e7e5792efa9dcb51e1af276bf342551375d9a0d8dd6894589f4fd42fc","sha256:755ce5cb8c6b803cf96209945dd988ebfe9076df431dc2bb9fc60eed16d2f6a2"],"state_sha256":"43d1361df7480a834c4766b7a574265a69345423618463c4cf0dc6940a81152d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z0/nLwZOVi4F8J4KkRhDR41WMwYDucWrdLhECErU6U+nG6t+B4SkYuyKocrmQPCEuG4shSOz7/N6HZtpvBNTDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T20:13:41.007542Z","bundle_sha256":"32e83e5a38fb4ee5cbab272847cfbaa2d764384605098d25dd597e481bfba77c"}}