{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TFREWET46APARKAFCRIMCDQFG6","short_pith_number":"pith:TFREWET4","canonical_record":{"source":{"id":"1512.08172","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-27T05:34:17Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"8ee61f774afc1f1760c215b11ba2e39769ba11fbc08fcae4c0350c709d5a30fc","abstract_canon_sha256":"632b712c4f242f5968b3937f18c163bd55ea0a5707dcd38a0c98cf0c90c65ac5"},"schema_version":"1.0"},"canonical_sha256":"99624b127cf01e08a8051450c10e0537a0722668c67aef54aee82d67bc0d35cb","source":{"kind":"arxiv","id":"1512.08172","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.08172","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"arxiv_version","alias_value":"1512.08172v1","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.08172","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_12","alias_value":"TFREWET46APA","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_16","alias_value":"TFREWET46APARKAF","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_8","alias_value":"TFREWET4","created_at":"2026-07-05T02:13:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TFREWET46APARKAFCRIMCDQFG6","target":"record","payload":{"canonical_record":{"source":{"id":"1512.08172","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-27T05:34:17Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"8ee61f774afc1f1760c215b11ba2e39769ba11fbc08fcae4c0350c709d5a30fc","abstract_canon_sha256":"632b712c4f242f5968b3937f18c163bd55ea0a5707dcd38a0c98cf0c90c65ac5"},"schema_version":"1.0"},"canonical_sha256":"99624b127cf01e08a8051450c10e0537a0722668c67aef54aee82d67bc0d35cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:13:33.348362Z","signature_b64":"/UmqSGBtUDGGDYttSTCGhfU/iFa+LGiM8NZTQ+68g/M40Bqq8qlxKN1tXOglANs2KVVOFznGyt7PVGXIFEbfAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99624b127cf01e08a8051450c10e0537a0722668c67aef54aee82d67bc0d35cb","last_reissued_at":"2026-07-05T02:13:33.347974Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:13:33.347974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.08172","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":"2026-07-05T02:13:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2sBEcsrmx+pZC+LsC7n8eAwZ2eaMpK2/JOCmrNIhQF/eV8V8TGzSe/sI3eQh103wJ7ohm5HgdgtZudIPWbsBAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T20:35:09.540783Z"},"content_sha256":"0c9379022d754b5bf2cec6c285475c61f626890474d11dfdc310d1a1c2e5cea3","schema_version":"1.0","event_id":"sha256:0c9379022d754b5bf2cec6c285475c61f626890474d11dfdc310d1a1c2e5cea3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TFREWET46APARKAFCRIMCDQFG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin Physics through QCD Instantons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Ismail Zahed, Yachao Qian","submitted_at":"2015-12-27T05:34:17Z","abstract_excerpt":"We review some aspects of spin physics where QCD instantons play an important role. In particular, their large contributions in semi-inclusive deep-inelastic scattering and polarized proton on proton scattering. We also review their possible contribution in the $\\mathcal{P}$-odd pion azimuthal charge correlations in peripheral $AA$ scattering at collider energies."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.08172","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/1512.08172/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":"2026-07-05T02:13:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K4EpP3glALJ+GzjEzbJN78Ug/MvuiyYkg4yM5HkqVwNVBIpdF8uXCD7r+GqLfjWhkdumSXeQJqXRFrBHkb3BAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T20:35:09.541312Z"},"content_sha256":"22dff2690f8ac17c5734799de0147c670b5ad81befba27d81155e55392c92ccc","schema_version":"1.0","event_id":"sha256:22dff2690f8ac17c5734799de0147c670b5ad81befba27d81155e55392c92ccc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TFREWET46APARKAFCRIMCDQFG6/bundle.json","state_url":"https://pith.science/pith/TFREWET46APARKAFCRIMCDQFG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TFREWET46APARKAFCRIMCDQFG6/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":"2026-08-02T20:35:09Z","links":{"resolver":"https://pith.science/pith/TFREWET46APARKAFCRIMCDQFG6","bundle":"https://pith.science/pith/TFREWET46APARKAFCRIMCDQFG6/bundle.json","state":"https://pith.science/pith/TFREWET46APARKAFCRIMCDQFG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TFREWET46APARKAFCRIMCDQFG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TFREWET46APARKAFCRIMCDQFG6","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":"632b712c4f242f5968b3937f18c163bd55ea0a5707dcd38a0c98cf0c90c65ac5","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-27T05:34:17Z","title_canon_sha256":"8ee61f774afc1f1760c215b11ba2e39769ba11fbc08fcae4c0350c709d5a30fc"},"schema_version":"1.0","source":{"id":"1512.08172","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.08172","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"arxiv_version","alias_value":"1512.08172v1","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.08172","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_12","alias_value":"TFREWET46APA","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_16","alias_value":"TFREWET46APARKAF","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_8","alias_value":"TFREWET4","created_at":"2026-07-05T02:13:33Z"}],"graph_snapshots":[{"event_id":"sha256:22dff2690f8ac17c5734799de0147c670b5ad81befba27d81155e55392c92ccc","target":"graph","created_at":"2026-07-05T02:13:33Z","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/1512.08172/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We review some aspects of spin physics where QCD instantons play an important role. In particular, their large contributions in semi-inclusive deep-inelastic scattering and polarized proton on proton scattering. We also review their possible contribution in the $\\mathcal{P}$-odd pion azimuthal charge correlations in peripheral $AA$ scattering at collider energies.","authors_text":"Ismail Zahed, Yachao Qian","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-27T05:34:17Z","title":"Spin Physics through QCD Instantons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.08172","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":"sha256:0c9379022d754b5bf2cec6c285475c61f626890474d11dfdc310d1a1c2e5cea3","target":"record","created_at":"2026-07-05T02:13:33Z","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":"632b712c4f242f5968b3937f18c163bd55ea0a5707dcd38a0c98cf0c90c65ac5","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-27T05:34:17Z","title_canon_sha256":"8ee61f774afc1f1760c215b11ba2e39769ba11fbc08fcae4c0350c709d5a30fc"},"schema_version":"1.0","source":{"id":"1512.08172","kind":"arxiv","version":1}},"canonical_sha256":"99624b127cf01e08a8051450c10e0537a0722668c67aef54aee82d67bc0d35cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99624b127cf01e08a8051450c10e0537a0722668c67aef54aee82d67bc0d35cb","first_computed_at":"2026-07-05T02:13:33.347974Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:13:33.347974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/UmqSGBtUDGGDYttSTCGhfU/iFa+LGiM8NZTQ+68g/M40Bqq8qlxKN1tXOglANs2KVVOFznGyt7PVGXIFEbfAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:13:33.348362Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.08172","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c9379022d754b5bf2cec6c285475c61f626890474d11dfdc310d1a1c2e5cea3","sha256:22dff2690f8ac17c5734799de0147c670b5ad81befba27d81155e55392c92ccc"],"state_sha256":"3438311f9ba1b96c5d63fb379460f102f3550bc2aba692ed0ef416262b67313b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YoesQa+fOHXGO45S9j2obSx+8FJZEdL3P67XwBzmyagsvJYNnzOdHcLaIYkkDdcTx7cXZtssl4Gw8AWe6KlvDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T20:35:09.547463Z","bundle_sha256":"f8e4cb45d82a053589b95fb3e20a82089b56ac37bc57f5c5773cdeae750dd5e9"}}