{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:RBQZEMHFHAEDQQ4XDTJCATGU3J","short_pith_number":"pith:RBQZEMHF","canonical_record":{"source":{"id":"2607.22809","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-07-24T18:00:00Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"8001f889daed155dadff66ac8a4c50d2b82170c8de635d17487ec3800009bc66","abstract_canon_sha256":"9ae043da36116e21565e4e6e206715d78bea4d0b4fb299dbb547feab3778155e"},"schema_version":"1.0"},"canonical_sha256":"88619230e538083843971cd2204cd4da67e154730b9253b80bd89c91dac9b93e","source":{"kind":"arxiv","id":"2607.22809","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.22809","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"arxiv_version","alias_value":"2607.22809v1","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.22809","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"pith_short_12","alias_value":"RBQZEMHFHAED","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"pith_short_16","alias_value":"RBQZEMHFHAEDQQ4X","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"pith_short_8","alias_value":"RBQZEMHF","created_at":"2026-07-28T00:21:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:RBQZEMHFHAEDQQ4XDTJCATGU3J","target":"record","payload":{"canonical_record":{"source":{"id":"2607.22809","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-07-24T18:00:00Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"8001f889daed155dadff66ac8a4c50d2b82170c8de635d17487ec3800009bc66","abstract_canon_sha256":"9ae043da36116e21565e4e6e206715d78bea4d0b4fb299dbb547feab3778155e"},"schema_version":"1.0"},"canonical_sha256":"88619230e538083843971cd2204cd4da67e154730b9253b80bd89c91dac9b93e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-28T00:21:55.504814Z","signature_b64":"IHWe/BxG03M5nF4llPh4CiYpD6Yq2uDjG5i7jSamMx9ZDu5vYX6gyIYjJt+Kiv4BPHLPRk2tawrAagWul5tLDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88619230e538083843971cd2204cd4da67e154730b9253b80bd89c91dac9b93e","last_reissued_at":"2026-07-28T00:21:55.503957Z","signature_status":"signed_v1","first_computed_at":"2026-07-28T00:21:55.503957Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.22809","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-28T00:21:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SWq5e6yEQ1nD1jR8InAQLWS5SjhUKVDetMWqIle8bXlZH1aH4cv2+zWXd7wrnVoxSnVcvh05r0AwL//nXeEbBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T23:17:18.737398Z"},"content_sha256":"9007a5da3ed243239b8068605a8df3bab5b84e2f2bffb72881e7e29af94b2a95","schema_version":"1.0","event_id":"sha256:9007a5da3ed243239b8068605a8df3bab5b84e2f2bffb72881e7e29af94b2a95"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:RBQZEMHFHAEDQQ4XDTJCATGU3J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Axion isocurvature and the model-building problem of low-scale inflation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-ph","authors_text":"Sarunas Verner","submitted_at":"2026-07-24T18:00:00Z","abstract_excerpt":"The pre-inflationary QCD axion is often said to require low-scale inflation. We derive a general isocurvature bound for a light axion with a scale-invariant spectrum, treating its inflationary normalization $f_I$ independently of the late-time decay constant $f_a$ and allowing for an arbitrary axion dark matter fraction, nontrivial perturbation transfer, and the full anharmonic abundance response. In the minimal benchmark, where axions constitute all of the dark matter, $f_I=f_a\\leq M_{\\rm Pl}$, and the angular perturbation is conserved, the least restrictive CMB limit considered gives the 95%"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.22809","kind":"arxiv","version":1},"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/2607.22809/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":"2026-07-28T00:21:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mXR19M1zhUTMK3qFWSriYGPr4u2JnT+IvuL5BpY+93E7rIhbn3QtkftrqD4+pdM6gcA1SJVqai/rNH6P+VpBBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T23:17:18.737694Z"},"content_sha256":"3062de1aebff95cda4103a8e572622af95120d4b00c1b2592f2344c49d63066a","schema_version":"1.0","event_id":"sha256:3062de1aebff95cda4103a8e572622af95120d4b00c1b2592f2344c49d63066a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J/bundle.json","state_url":"https://pith.science/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J/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":"2026-08-01T23:17:18Z","links":{"resolver":"https://pith.science/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J","bundle":"https://pith.science/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J/bundle.json","state":"https://pith.science/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RBQZEMHFHAEDQQ4XDTJCATGU3J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:RBQZEMHFHAEDQQ4XDTJCATGU3J","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":"9ae043da36116e21565e4e6e206715d78bea4d0b4fb299dbb547feab3778155e","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-07-24T18:00:00Z","title_canon_sha256":"8001f889daed155dadff66ac8a4c50d2b82170c8de635d17487ec3800009bc66"},"schema_version":"1.0","source":{"id":"2607.22809","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.22809","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"arxiv_version","alias_value":"2607.22809v1","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.22809","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"pith_short_12","alias_value":"RBQZEMHFHAED","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"pith_short_16","alias_value":"RBQZEMHFHAEDQQ4X","created_at":"2026-07-28T00:21:55Z"},{"alias_kind":"pith_short_8","alias_value":"RBQZEMHF","created_at":"2026-07-28T00:21:55Z"}],"graph_snapshots":[{"event_id":"sha256:3062de1aebff95cda4103a8e572622af95120d4b00c1b2592f2344c49d63066a","target":"graph","created_at":"2026-07-28T00:21:55Z","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/2607.22809/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The pre-inflationary QCD axion is often said to require low-scale inflation. We derive a general isocurvature bound for a light axion with a scale-invariant spectrum, treating its inflationary normalization $f_I$ independently of the late-time decay constant $f_a$ and allowing for an arbitrary axion dark matter fraction, nontrivial perturbation transfer, and the full anharmonic abundance response. In the minimal benchmark, where axions constitute all of the dark matter, $f_I=f_a\\leq M_{\\rm Pl}$, and the angular perturbation is conserved, the least restrictive CMB limit considered gives the 95%","authors_text":"Sarunas Verner","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-07-24T18:00:00Z","title":"Axion isocurvature and the model-building problem of low-scale inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.22809","kind":"arxiv","version":1},"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":"sha256:9007a5da3ed243239b8068605a8df3bab5b84e2f2bffb72881e7e29af94b2a95","target":"record","created_at":"2026-07-28T00:21:55Z","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":"9ae043da36116e21565e4e6e206715d78bea4d0b4fb299dbb547feab3778155e","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-07-24T18:00:00Z","title_canon_sha256":"8001f889daed155dadff66ac8a4c50d2b82170c8de635d17487ec3800009bc66"},"schema_version":"1.0","source":{"id":"2607.22809","kind":"arxiv","version":1}},"canonical_sha256":"88619230e538083843971cd2204cd4da67e154730b9253b80bd89c91dac9b93e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88619230e538083843971cd2204cd4da67e154730b9253b80bd89c91dac9b93e","first_computed_at":"2026-07-28T00:21:55.503957Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-28T00:21:55.503957Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IHWe/BxG03M5nF4llPh4CiYpD6Yq2uDjG5i7jSamMx9ZDu5vYX6gyIYjJt+Kiv4BPHLPRk2tawrAagWul5tLDQ==","signature_status":"signed_v1","signed_at":"2026-07-28T00:21:55.504814Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.22809","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9007a5da3ed243239b8068605a8df3bab5b84e2f2bffb72881e7e29af94b2a95","sha256:3062de1aebff95cda4103a8e572622af95120d4b00c1b2592f2344c49d63066a"],"state_sha256":"a6d97ad672a679eef2abea45c8f93ca1e7392b903745705a0a5dd07a13873d72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c56xr0bCCkfLwOj+sm0serqGjK1mKpceWxpAOEVUe97HSuUbctWxa4nKBAWCjiUDCmh2TAa85zbMJUKAF3IxBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T23:17:18.741866Z","bundle_sha256":"cb74734f5cabd9929a8f8dac8bc1c9fda1ac7e0d9e82ab0cc53a1cc483c38017"}}