{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:Z7Y3VPT3H7TAKWD5GFVPOCXC3U","short_pith_number":"pith:Z7Y3VPT3","canonical_record":{"source":{"id":"2202.03372","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2022-02-07T17:43:26Z","cross_cats_sorted":["hep-ex","nucl-th"],"title_canon_sha256":"a9bad8d6cee85ad5c53bc237e7c2124fc5c607aa3f074d412106cec623667ae3","abstract_canon_sha256":"9d7b6b4cfa2dc42729c093d701b9a23b1e35b5d55b9e948723078fc88bf3cc21"},"schema_version":"1.0"},"canonical_sha256":"cff1babe7b3fe605587d316af70ae2dd2bf003525685e7915b204e88a6f3acb7","source":{"kind":"arxiv","id":"2202.03372","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.03372","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"arxiv_version","alias_value":"2202.03372v2","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.03372","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"pith_short_12","alias_value":"Z7Y3VPT3H7TA","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"pith_short_16","alias_value":"Z7Y3VPT3H7TAKWD5","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"pith_short_8","alias_value":"Z7Y3VPT3","created_at":"2026-07-05T06:48:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:Z7Y3VPT3H7TAKWD5GFVPOCXC3U","target":"record","payload":{"canonical_record":{"source":{"id":"2202.03372","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2022-02-07T17:43:26Z","cross_cats_sorted":["hep-ex","nucl-th"],"title_canon_sha256":"a9bad8d6cee85ad5c53bc237e7c2124fc5c607aa3f074d412106cec623667ae3","abstract_canon_sha256":"9d7b6b4cfa2dc42729c093d701b9a23b1e35b5d55b9e948723078fc88bf3cc21"},"schema_version":"1.0"},"canonical_sha256":"cff1babe7b3fe605587d316af70ae2dd2bf003525685e7915b204e88a6f3acb7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:48:30.038824Z","signature_b64":"S0rYc/jmLQV2ZFZKH4hokrIa68VFWVvaBVBhN2oMbAyGGIbEw5QZd6dC2b1DjiauyXgPgm2IlO26m2bAklUKCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cff1babe7b3fe605587d316af70ae2dd2bf003525685e7915b204e88a6f3acb7","last_reissued_at":"2026-07-05T06:48:30.038339Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:48:30.038339Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.03372","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":"2026-07-05T06:48:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ydbOLqfLz0aVqLqQJloIFTPQzOCM0rH31ipY5ud1TiQNJztic0WFidB7XkxAxgzAWT7g2xif+C8zaxEjxMsVBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T07:25:27.287713Z"},"content_sha256":"10926a1597b5827a980020d07c6661dba0cb51a52550edb0df0cf91e521bf75f","schema_version":"1.0","event_id":"sha256:10926a1597b5827a980020d07c6661dba0cb51a52550edb0df0cf91e521bf75f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:Z7Y3VPT3H7TAKWD5GFVPOCXC3U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Polarized Antimatter in the Proton from Global QCD Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"A. Metz, C. Cocuzza, N. Sato, W. Melnitchouk","submitted_at":"2022-02-07T17:43:26Z","abstract_excerpt":"We present the first simultaneous global QCD analysis of spin-dependent parton distribution functions alongside their spin-averaged counterparts and pion, kaon, and unidentified hadron fragmentation functions. This analysis includes all data relevant for constraining the polarized light quark sea asymmetry $\\Delta \\bar{u} - \\Delta \\bar{d}$, in particular the latest polarized $W$-lepton production data from the STAR collaboration at RHIC and semi-inclusive deep inelastic scattering data from COMPASS, allowing the most robust extraction available with minimal theoretical assumptions. We also ext"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.03372","kind":"arxiv","version":2},"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/2202.03372/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":"2026-07-05T06:48:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"El2IznMGRrTmlxsVktoMIoAx+DLf3rzLmGoAAmKy8uoZjb+yCGpomEqlfBVqug7Ro7YCV7OzSnSUTi9zkHMaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T07:25:27.288219Z"},"content_sha256":"c3c880b8e7b5596e6786fca8902f32948624bddd4ea36f591e307ae3ad0e7182","schema_version":"1.0","event_id":"sha256:c3c880b8e7b5596e6786fca8902f32948624bddd4ea36f591e307ae3ad0e7182"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U/bundle.json","state_url":"https://pith.science/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U/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":"2026-08-10T07:25:27Z","links":{"resolver":"https://pith.science/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U","bundle":"https://pith.science/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U/bundle.json","state":"https://pith.science/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z7Y3VPT3H7TAKWD5GFVPOCXC3U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:Z7Y3VPT3H7TAKWD5GFVPOCXC3U","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":"9d7b6b4cfa2dc42729c093d701b9a23b1e35b5d55b9e948723078fc88bf3cc21","cross_cats_sorted":["hep-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2022-02-07T17:43:26Z","title_canon_sha256":"a9bad8d6cee85ad5c53bc237e7c2124fc5c607aa3f074d412106cec623667ae3"},"schema_version":"1.0","source":{"id":"2202.03372","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.03372","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"arxiv_version","alias_value":"2202.03372v2","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.03372","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"pith_short_12","alias_value":"Z7Y3VPT3H7TA","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"pith_short_16","alias_value":"Z7Y3VPT3H7TAKWD5","created_at":"2026-07-05T06:48:30Z"},{"alias_kind":"pith_short_8","alias_value":"Z7Y3VPT3","created_at":"2026-07-05T06:48:30Z"}],"graph_snapshots":[{"event_id":"sha256:c3c880b8e7b5596e6786fca8902f32948624bddd4ea36f591e307ae3ad0e7182","target":"graph","created_at":"2026-07-05T06:48:30Z","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/2202.03372/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first simultaneous global QCD analysis of spin-dependent parton distribution functions alongside their spin-averaged counterparts and pion, kaon, and unidentified hadron fragmentation functions. This analysis includes all data relevant for constraining the polarized light quark sea asymmetry $\\Delta \\bar{u} - \\Delta \\bar{d}$, in particular the latest polarized $W$-lepton production data from the STAR collaboration at RHIC and semi-inclusive deep inelastic scattering data from COMPASS, allowing the most robust extraction available with minimal theoretical assumptions. We also ext","authors_text":"A. Metz, C. Cocuzza, N. Sato, W. Melnitchouk","cross_cats":["hep-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2022-02-07T17:43:26Z","title":"Polarized Antimatter in the Proton from Global QCD Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.03372","kind":"arxiv","version":2},"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":"sha256:10926a1597b5827a980020d07c6661dba0cb51a52550edb0df0cf91e521bf75f","target":"record","created_at":"2026-07-05T06:48:30Z","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":"9d7b6b4cfa2dc42729c093d701b9a23b1e35b5d55b9e948723078fc88bf3cc21","cross_cats_sorted":["hep-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2022-02-07T17:43:26Z","title_canon_sha256":"a9bad8d6cee85ad5c53bc237e7c2124fc5c607aa3f074d412106cec623667ae3"},"schema_version":"1.0","source":{"id":"2202.03372","kind":"arxiv","version":2}},"canonical_sha256":"cff1babe7b3fe605587d316af70ae2dd2bf003525685e7915b204e88a6f3acb7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cff1babe7b3fe605587d316af70ae2dd2bf003525685e7915b204e88a6f3acb7","first_computed_at":"2026-07-05T06:48:30.038339Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:48:30.038339Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S0rYc/jmLQV2ZFZKH4hokrIa68VFWVvaBVBhN2oMbAyGGIbEw5QZd6dC2b1DjiauyXgPgm2IlO26m2bAklUKCA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:48:30.038824Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.03372","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10926a1597b5827a980020d07c6661dba0cb51a52550edb0df0cf91e521bf75f","sha256:c3c880b8e7b5596e6786fca8902f32948624bddd4ea36f591e307ae3ad0e7182"],"state_sha256":"4daa89349e50b9a95eb5018969beb41a153abd90034998401e9c05238e2f6a52"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s7khqEtvt7T2UFB9h6tbjHFKU4cNMRkzWBid6/q7/Rya/2hyQ/PqnVSAgnj0BfDxvT/fpbQa3jIzRpoU0JlzCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T07:25:27.293350Z","bundle_sha256":"40607ede82d02a299187f5383a5995a690cec1f3411461d329531854d19146a5"}}