{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NAIHL6D6V5CL3AWVUN25D5OSRV","short_pith_number":"pith:NAIHL6D6","canonical_record":{"source":{"id":"2604.27423","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.DG","submitted_at":"2026-04-30T04:53:47Z","cross_cats_sorted":[],"title_canon_sha256":"460754da47fd28800642990a25ba625b1e7557fd9d29a21afb396ea5d871b7b9","abstract_canon_sha256":"b440d9db7201e04050cf428ca511f5bfe032eac61939679cea53411b288bf7b2"},"schema_version":"1.0"},"canonical_sha256":"681075f87eaf44bd82d5a375d1f5d28d73445c3dd2c5f9b6e8f73dcddf6c5a70","source":{"kind":"arxiv","id":"2604.27423","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.27423","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"2604.27423v2","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.27423","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"NAIHL6D6V5CL","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"pith_short_16","alias_value":"NAIHL6D6V5CL3AWV","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"pith_short_8","alias_value":"NAIHL6D6","created_at":"2026-05-26T01:03:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NAIHL6D6V5CL3AWVUN25D5OSRV","target":"record","payload":{"canonical_record":{"source":{"id":"2604.27423","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.DG","submitted_at":"2026-04-30T04:53:47Z","cross_cats_sorted":[],"title_canon_sha256":"460754da47fd28800642990a25ba625b1e7557fd9d29a21afb396ea5d871b7b9","abstract_canon_sha256":"b440d9db7201e04050cf428ca511f5bfe032eac61939679cea53411b288bf7b2"},"schema_version":"1.0"},"canonical_sha256":"681075f87eaf44bd82d5a375d1f5d28d73445c3dd2c5f9b6e8f73dcddf6c5a70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T01:03:31.411819Z","signature_b64":"JV6KSuI26y+7tR+QzEm0NaaFAG7BglAtm6xfuuvoZ1JS4PHG8HLxxkI6UFpHWLj8IbVoICKzhCrjjdAarYlhCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"681075f87eaf44bd82d5a375d1f5d28d73445c3dd2c5f9b6e8f73dcddf6c5a70","last_reissued_at":"2026-05-26T01:03:31.410968Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T01:03:31.410968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2604.27423","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":"2026-05-26T01:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rB5AWz8CNF3cHZeQlhpRLRwMr0fVA7NT4BaF0jX/+OVY3jL46a3hlHIPgwcOdfQai3v9w3wUmlJtbzhPu6BOBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:37:20.508682Z"},"content_sha256":"cc7b6348c49c28b86fb480b37adecb6a08284a356daddad14508deb777b103d8","schema_version":"1.0","event_id":"sha256:cc7b6348c49c28b86fb480b37adecb6a08284a356daddad14508deb777b103d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NAIHL6D6V5CL3AWVUN25D5OSRV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hirzebruch $\\chi_{y}$-genus of compact almost K\\\"{a}hler manifold with negative sectional curvature","license":"http://creativecommons.org/licenses/by/4.0/","headline":"If the Nijenhuis tensor is sufficiently small, then the Hirzebruch χ_y-genus of a closed almost Kähler manifold with negative sectional curvature has components satisfying (-1)^{n-p} χ_p(X) ≥ 1 for each p.","cross_cats":[],"primary_cat":"math.DG","authors_text":"Pan Zhang, Teng Huang","submitted_at":"2026-04-30T04:53:47Z","abstract_excerpt":"Let \\((X,J,\\omega)\\) be a closed \\(2n\\)-dimensional almost K\\\"{a}hler manifold with negative sectional curvature. We prove that if the Nijenhuis tensor of the almost complex structure is sufficiently small, then the components of the Hirzebruch \\(\\chi_{y}\\)-genus satisfy the inequality \\((-1)^{n-p}\\chi_{p}(X)\\geq 1\\) for all \\(p=0,1,\\cdots,n\\). In particular, this result implies the Hopf conjecture in this setting, namely that the Euler number satisfies \\((-1)^{n}\\chi(X)\\geq n+1\\). The proof is based on new \\(L^{2}\\)-estimates for harmonic forms on the universal covering, combined with a refin"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We prove that if the Nijenhuis tensor of the almost complex structure is sufficiently small, then the components of the Hirzebruch χ_y-genus satisfy the inequality (-1)^{n-p}χ_p(X)≥1 for all p=0,1,⋯,n. In particular, this result implies the Hopf conjecture in this setting, namely that the Euler number satisfies (-1)^n χ(X)≥n+1.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the Nijenhuis tensor is 'sufficiently small' (a qualitative rather than quantitative bound) so that the new L² estimates and refined vanishing theorem apply; the abstract gives no explicit threshold or verification that such smallness is compatible with negative sectional curvature on a closed manifold.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"For compact almost Kähler manifolds with negative sectional curvature and sufficiently small Nijenhuis tensor, the Hirzebruch χ_y-genus components satisfy (-1)^{n-p} χ_p(X) ≥ 1 for all p, implying the Hopf conjecture (-1)^n χ(X) ≥ n+1.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"If the Nijenhuis tensor is sufficiently small, then the Hirzebruch χ_y-genus of a closed almost Kähler manifold with negative sectional curvature has components satisfying (-1)^{n-p} χ_p(X) ≥ 1 for each p.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"faacddd89bc52face9adc221e8f72d06af5cf22b5013244f36703845f92bb7e0"},"source":{"id":"2604.27423","kind":"arxiv","version":2},"verdict":{"id":"ff20ba1b-7b08-4ee9-81e5-0dea686a8c79","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-07T08:49:12.474834Z","strongest_claim":"We prove that if the Nijenhuis tensor of the almost complex structure is sufficiently small, then the components of the Hirzebruch χ_y-genus satisfy the inequality (-1)^{n-p}χ_p(X)≥1 for all p=0,1,⋯,n. In particular, this result implies the Hopf conjecture in this setting, namely that the Euler number satisfies (-1)^n χ(X)≥n+1.","one_line_summary":"For compact almost Kähler manifolds with negative sectional curvature and sufficiently small Nijenhuis tensor, the Hirzebruch χ_y-genus components satisfy (-1)^{n-p} χ_p(X) ≥ 1 for all p, implying the Hopf conjecture (-1)^n χ(X) ≥ n+1.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the Nijenhuis tensor is 'sufficiently small' (a qualitative rather than quantitative bound) so that the new L² estimates and refined vanishing theorem apply; the abstract gives no explicit threshold or verification that such smallness is compatible with negative sectional curvature on a closed manifold.","pith_extraction_headline":"If the Nijenhuis tensor is sufficiently small, then the Hirzebruch χ_y-genus of a closed almost Kähler manifold with negative sectional curvature has components satisfying (-1)^{n-p} χ_p(X) ≥ 1 for each p."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.27423/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-20T22:36:38.575245Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T19:15:41.039555Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"3d723c1f26b47404df51287064d6144079190e89b60f13338b0b63815065566e"},"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":"ff20ba1b-7b08-4ee9-81e5-0dea686a8c79"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-26T01:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ErA/LTh+6QWuvLGOfCE51aJeS5TkZNJI43F37+l/3R2YwB/AxSfdcCFHPlEYKt5Q1G+hFvKKY287cnhCbHn5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:37:20.509307Z"},"content_sha256":"46d4ee8b5aa7dbaa4b13c0edcbfe0f306a5d6160b13a350734d6c9aa020d8835","schema_version":"1.0","event_id":"sha256:46d4ee8b5aa7dbaa4b13c0edcbfe0f306a5d6160b13a350734d6c9aa020d8835"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NAIHL6D6V5CL3AWVUN25D5OSRV/bundle.json","state_url":"https://pith.science/pith/NAIHL6D6V5CL3AWVUN25D5OSRV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NAIHL6D6V5CL3AWVUN25D5OSRV/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":"2026-06-03T06:37:20Z","links":{"resolver":"https://pith.science/pith/NAIHL6D6V5CL3AWVUN25D5OSRV","bundle":"https://pith.science/pith/NAIHL6D6V5CL3AWVUN25D5OSRV/bundle.json","state":"https://pith.science/pith/NAIHL6D6V5CL3AWVUN25D5OSRV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NAIHL6D6V5CL3AWVUN25D5OSRV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NAIHL6D6V5CL3AWVUN25D5OSRV","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":"b440d9db7201e04050cf428ca511f5bfe032eac61939679cea53411b288bf7b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.DG","submitted_at":"2026-04-30T04:53:47Z","title_canon_sha256":"460754da47fd28800642990a25ba625b1e7557fd9d29a21afb396ea5d871b7b9"},"schema_version":"1.0","source":{"id":"2604.27423","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.27423","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"2604.27423v2","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.27423","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"NAIHL6D6V5CL","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"pith_short_16","alias_value":"NAIHL6D6V5CL3AWV","created_at":"2026-05-26T01:03:31Z"},{"alias_kind":"pith_short_8","alias_value":"NAIHL6D6","created_at":"2026-05-26T01:03:31Z"}],"graph_snapshots":[{"event_id":"sha256:46d4ee8b5aa7dbaa4b13c0edcbfe0f306a5d6160b13a350734d6c9aa020d8835","target":"graph","created_at":"2026-05-26T01:03:31Z","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 prove that if the Nijenhuis tensor of the almost complex structure is sufficiently small, then the components of the Hirzebruch χ_y-genus satisfy the inequality (-1)^{n-p}χ_p(X)≥1 for all p=0,1,⋯,n. In particular, this result implies the Hopf conjecture in this setting, namely that the Euler number satisfies (-1)^n χ(X)≥n+1."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The assumption that the Nijenhuis tensor is 'sufficiently small' (a qualitative rather than quantitative bound) so that the new L² estimates and refined vanishing theorem apply; the abstract gives no explicit threshold or verification that such smallness is compatible with negative sectional curvature on a closed manifold."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"For compact almost Kähler manifolds with negative sectional curvature and sufficiently small Nijenhuis tensor, the Hirzebruch χ_y-genus components satisfy (-1)^{n-p} χ_p(X) ≥ 1 for all p, implying the Hopf conjecture (-1)^n χ(X) ≥ n+1."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"If the Nijenhuis tensor is sufficiently small, then the Hirzebruch χ_y-genus of a closed almost Kähler manifold with negative sectional curvature has components satisfying (-1)^{n-p} χ_p(X) ≥ 1 for each p."}],"snapshot_sha256":"faacddd89bc52face9adc221e8f72d06af5cf22b5013244f36703845f92bb7e0"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-20T22:36:38.575245Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"doi_compliance","ran_at":"2026-05-19T19:15:41.039555Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2604.27423/integrity.json","findings":[],"snapshot_sha256":"3d723c1f26b47404df51287064d6144079190e89b60f13338b0b63815065566e","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Let \\((X,J,\\omega)\\) be a closed \\(2n\\)-dimensional almost K\\\"{a}hler manifold with negative sectional curvature. We prove that if the Nijenhuis tensor of the almost complex structure is sufficiently small, then the components of the Hirzebruch \\(\\chi_{y}\\)-genus satisfy the inequality \\((-1)^{n-p}\\chi_{p}(X)\\geq 1\\) for all \\(p=0,1,\\cdots,n\\). In particular, this result implies the Hopf conjecture in this setting, namely that the Euler number satisfies \\((-1)^{n}\\chi(X)\\geq n+1\\). The proof is based on new \\(L^{2}\\)-estimates for harmonic forms on the universal covering, combined with a refin","authors_text":"Pan Zhang, Teng Huang","cross_cats":[],"headline":"If the Nijenhuis tensor is sufficiently small, then the Hirzebruch χ_y-genus of a closed almost Kähler manifold with negative sectional curvature has components satisfying (-1)^{n-p} χ_p(X) ≥ 1 for each p.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.DG","submitted_at":"2026-04-30T04:53:47Z","title":"Hirzebruch $\\chi_{y}$-genus of compact almost K\\\"{a}hler manifold with negative sectional curvature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2604.27423","kind":"arxiv","version":2},"verdict":{"created_at":"2026-05-07T08:49:12.474834Z","id":"ff20ba1b-7b08-4ee9-81e5-0dea686a8c79","model_set":{"reader":"grok-4.3"},"one_line_summary":"For compact almost Kähler manifolds with negative sectional curvature and sufficiently small Nijenhuis tensor, the Hirzebruch χ_y-genus components satisfy (-1)^{n-p} χ_p(X) ≥ 1 for all p, implying the Hopf conjecture (-1)^n χ(X) ≥ n+1.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"If the Nijenhuis tensor is sufficiently small, then the Hirzebruch χ_y-genus of a closed almost Kähler manifold with negative sectional curvature has components satisfying (-1)^{n-p} χ_p(X) ≥ 1 for each p.","strongest_claim":"We prove that if the Nijenhuis tensor of the almost complex structure is sufficiently small, then the components of the Hirzebruch χ_y-genus satisfy the inequality (-1)^{n-p}χ_p(X)≥1 for all p=0,1,⋯,n. In particular, this result implies the Hopf conjecture in this setting, namely that the Euler number satisfies (-1)^n χ(X)≥n+1.","weakest_assumption":"The assumption that the Nijenhuis tensor is 'sufficiently small' (a qualitative rather than quantitative bound) so that the new L² estimates and refined vanishing theorem apply; the abstract gives no explicit threshold or verification that such smallness is compatible with negative sectional curvature on a closed manifold."}},"verdict_id":"ff20ba1b-7b08-4ee9-81e5-0dea686a8c79"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:cc7b6348c49c28b86fb480b37adecb6a08284a356daddad14508deb777b103d8","target":"record","created_at":"2026-05-26T01:03:31Z","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":"b440d9db7201e04050cf428ca511f5bfe032eac61939679cea53411b288bf7b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.DG","submitted_at":"2026-04-30T04:53:47Z","title_canon_sha256":"460754da47fd28800642990a25ba625b1e7557fd9d29a21afb396ea5d871b7b9"},"schema_version":"1.0","source":{"id":"2604.27423","kind":"arxiv","version":2}},"canonical_sha256":"681075f87eaf44bd82d5a375d1f5d28d73445c3dd2c5f9b6e8f73dcddf6c5a70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"681075f87eaf44bd82d5a375d1f5d28d73445c3dd2c5f9b6e8f73dcddf6c5a70","first_computed_at":"2026-05-26T01:03:31.410968Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T01:03:31.410968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JV6KSuI26y+7tR+QzEm0NaaFAG7BglAtm6xfuuvoZ1JS4PHG8HLxxkI6UFpHWLj8IbVoICKzhCrjjdAarYlhCQ==","signature_status":"signed_v1","signed_at":"2026-05-26T01:03:31.411819Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.27423","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc7b6348c49c28b86fb480b37adecb6a08284a356daddad14508deb777b103d8","sha256:46d4ee8b5aa7dbaa4b13c0edcbfe0f306a5d6160b13a350734d6c9aa020d8835"],"state_sha256":"d9b63dd5037dbaeffb95748126d165938ed73675e7f9b24216970de7b1be2ce4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RFB5ZwMIgSlWThKcYA4SDu26nymBIYYe/DpLRnBOiVZtf2HcMLAnxofW2qa4ciwKdr+q74x2xSMy2YMX9CJHCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T06:37:20.511876Z","bundle_sha256":"2c60e59a3eb4438931ee9fd5f1685ec7b4e39dcb1e4c35a4378ed420005e44e8"}}