{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:GCOMXNIXOAUO5IVBR5UY4KSQM7","short_pith_number":"pith:GCOMXNIX","canonical_record":{"source":{"id":"hep-ph/9606475","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1996-06-28T17:47:24Z","cross_cats_sorted":[],"title_canon_sha256":"07167bd1909b34095505e37699435e1793cc59978cd4114247260012cf587baf","abstract_canon_sha256":"8b698693e9b36bdde46bea04f944e2f092cebeafdd46b06d7731b6cc8d108c21"},"schema_version":"1.0"},"canonical_sha256":"309ccbb5177028eea2a18f698e2a5067c05cf1ca1952e2977664bfc80cba9eb3","source":{"kind":"arxiv","id":"hep-ph/9606475","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9606475","created_at":"2026-05-18T04:24:44Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9606475v1","created_at":"2026-05-18T04:24:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9606475","created_at":"2026-05-18T04:24:44Z"},{"alias_kind":"pith_short_12","alias_value":"GCOMXNIXOAUO","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"GCOMXNIXOAUO5IVB","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"GCOMXNIX","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:GCOMXNIXOAUO5IVBR5UY4KSQM7","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9606475","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1996-06-28T17:47:24Z","cross_cats_sorted":[],"title_canon_sha256":"07167bd1909b34095505e37699435e1793cc59978cd4114247260012cf587baf","abstract_canon_sha256":"8b698693e9b36bdde46bea04f944e2f092cebeafdd46b06d7731b6cc8d108c21"},"schema_version":"1.0"},"canonical_sha256":"309ccbb5177028eea2a18f698e2a5067c05cf1ca1952e2977664bfc80cba9eb3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:24:44.348433Z","signature_b64":"Z/7RqXSjnZHnwWtB/m9WD5fYWRQvcwW+cZ6hBEk3fL+N+XO3dGTLoSZUp8yGUjjklgI0Ne0aM1zLgAWFVfKFAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"309ccbb5177028eea2a18f698e2a5067c05cf1ca1952e2977664bfc80cba9eb3","last_reissued_at":"2026-05-18T04:24:44.348030Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:24:44.348030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9606475","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":"2026-05-18T04:24:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lCyNYC1exNtwAgZTvwhECGzWfNrNJx62pjlw485M9bSWvI6mDN55oB8YkKJ7DQ5g4jMLBx2t8RZ/ekUq2GfRAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T17:05:18.878115Z"},"content_sha256":"7338ad24715032d9df750a0c3a935ab81cfa50c287b8acba19d6d39d6d5d1d78","schema_version":"1.0","event_id":"sha256:7338ad24715032d9df750a0c3a935ab81cfa50c287b8acba19d6d39d6d5d1d78"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:GCOMXNIXOAUO5IVBR5UY4KSQM7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"QCD, Strong CP and Axions","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"R. D. Peccei","submitted_at":"1996-06-28T17:47:24Z","abstract_excerpt":"The physical origin of the strong CP problem in QCD, rooted in the structures of the vacuum of the standard model, is reviewed. The chiral solution to this problem, with its accompanying axion, is explained and various characteristics of axions are detailed. Although visible axion models are excluded experimentally, models with very light and very weakly coupled axions are still tenable. The astrophysical and cosmological implications of such axion models are discussed, along with ongoing experimental attempts to detect such, so called, invisible axions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9606475","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":""},"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":"2026-05-18T04:24:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"92DWWM4hgU4lL1ZPPbzSC0PoB2I/RJeSSifLBvJdebI+w7VNGr4gvh426TPk+OMvfnBw5g6LCo6r8eRC4gIwBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T17:05:18.878477Z"},"content_sha256":"ac3ca7dee4e73a3129ff45eb5deec4a9a578d91df0cc09c89af36467a3475efb","schema_version":"1.0","event_id":"sha256:ac3ca7dee4e73a3129ff45eb5deec4a9a578d91df0cc09c89af36467a3475efb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7/bundle.json","state_url":"https://pith.science/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7/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":"2026-06-04T17:05:18Z","links":{"resolver":"https://pith.science/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7","bundle":"https://pith.science/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7/bundle.json","state":"https://pith.science/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GCOMXNIXOAUO5IVBR5UY4KSQM7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:GCOMXNIXOAUO5IVBR5UY4KSQM7","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":"8b698693e9b36bdde46bea04f944e2f092cebeafdd46b06d7731b6cc8d108c21","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1996-06-28T17:47:24Z","title_canon_sha256":"07167bd1909b34095505e37699435e1793cc59978cd4114247260012cf587baf"},"schema_version":"1.0","source":{"id":"hep-ph/9606475","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9606475","created_at":"2026-05-18T04:24:44Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9606475v1","created_at":"2026-05-18T04:24:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9606475","created_at":"2026-05-18T04:24:44Z"},{"alias_kind":"pith_short_12","alias_value":"GCOMXNIXOAUO","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"GCOMXNIXOAUO5IVB","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"GCOMXNIX","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:ac3ca7dee4e73a3129ff45eb5deec4a9a578d91df0cc09c89af36467a3475efb","target":"graph","created_at":"2026-05-18T04:24:44Z","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"},"paper":{"abstract_excerpt":"The physical origin of the strong CP problem in QCD, rooted in the structures of the vacuum of the standard model, is reviewed. The chiral solution to this problem, with its accompanying axion, is explained and various characteristics of axions are detailed. Although visible axion models are excluded experimentally, models with very light and very weakly coupled axions are still tenable. The astrophysical and cosmological implications of such axion models are discussed, along with ongoing experimental attempts to detect such, so called, invisible axions.","authors_text":"R. D. Peccei","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1996-06-28T17:47:24Z","title":"QCD, Strong CP and Axions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9606475","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":"sha256:7338ad24715032d9df750a0c3a935ab81cfa50c287b8acba19d6d39d6d5d1d78","target":"record","created_at":"2026-05-18T04:24:44Z","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":"8b698693e9b36bdde46bea04f944e2f092cebeafdd46b06d7731b6cc8d108c21","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1996-06-28T17:47:24Z","title_canon_sha256":"07167bd1909b34095505e37699435e1793cc59978cd4114247260012cf587baf"},"schema_version":"1.0","source":{"id":"hep-ph/9606475","kind":"arxiv","version":1}},"canonical_sha256":"309ccbb5177028eea2a18f698e2a5067c05cf1ca1952e2977664bfc80cba9eb3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"309ccbb5177028eea2a18f698e2a5067c05cf1ca1952e2977664bfc80cba9eb3","first_computed_at":"2026-05-18T04:24:44.348030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:24:44.348030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z/7RqXSjnZHnwWtB/m9WD5fYWRQvcwW+cZ6hBEk3fL+N+XO3dGTLoSZUp8yGUjjklgI0Ne0aM1zLgAWFVfKFAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:24:44.348433Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9606475","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7338ad24715032d9df750a0c3a935ab81cfa50c287b8acba19d6d39d6d5d1d78","sha256:ac3ca7dee4e73a3129ff45eb5deec4a9a578d91df0cc09c89af36467a3475efb"],"state_sha256":"3e9d4e576786cfabe7e51303ec44ce94b113c987f7b6898ae730ce1e234ca873"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M6Rd+Z4Wo74XHcQP6h2IQuZIwnY6GTdd12iEagfKwxL4/DOFfmVpZXU581OYZYuDUDeKgN8MPVMPLh6ZHpiiBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T17:05:18.880508Z","bundle_sha256":"e00f472fbc000ddbb10db5ac8af143a1dac4b689e08d90dea331d56bf7b51926"}}