{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:MYDQYTO3RAKHHVEKDDWKCLJNSB","short_pith_number":"pith:MYDQYTO3","canonical_record":{"source":{"id":"1508.00911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-04T20:20:20Z","cross_cats_sorted":["hep-lat","nucl-th"],"title_canon_sha256":"9023ce449332fb1529cce571b0d33dcac393940be35341b659acb69a0b9cd666","abstract_canon_sha256":"f7f9bd064dc5e0ca0f86b5808ffc34d150cc1dd588f4593d3f1fb818f796df2a"},"schema_version":"1.0"},"canonical_sha256":"66070c4ddb881473d48a18eca12d2d90736f1ac83c6bc2533a9bda0db54eb53d","source":{"kind":"arxiv","id":"1508.00911","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00911","created_at":"2026-05-18T01:10:54Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00911v1","created_at":"2026-05-18T01:10:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00911","created_at":"2026-05-18T01:10:54Z"},{"alias_kind":"pith_short_12","alias_value":"MYDQYTO3RAKH","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MYDQYTO3RAKHHVEK","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MYDQYTO3","created_at":"2026-05-18T12:29:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:MYDQYTO3RAKHHVEKDDWKCLJNSB","target":"record","payload":{"canonical_record":{"source":{"id":"1508.00911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-04T20:20:20Z","cross_cats_sorted":["hep-lat","nucl-th"],"title_canon_sha256":"9023ce449332fb1529cce571b0d33dcac393940be35341b659acb69a0b9cd666","abstract_canon_sha256":"f7f9bd064dc5e0ca0f86b5808ffc34d150cc1dd588f4593d3f1fb818f796df2a"},"schema_version":"1.0"},"canonical_sha256":"66070c4ddb881473d48a18eca12d2d90736f1ac83c6bc2533a9bda0db54eb53d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:54.121907Z","signature_b64":"tuxWGYreh6Phvc2z+aFoYy8vingxiOIrJ4cIuY0C9fuxOtTcz1qS32uXM78CggwGDK0DDKDMcS+YSeOfghcwCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"66070c4ddb881473d48a18eca12d2d90736f1ac83c6bc2533a9bda0db54eb53d","last_reissued_at":"2026-05-18T01:10:54.121237Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:54.121237Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.00911","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":"2026-05-18T01:10:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OCte6qM4szwflJ62r4No+KoPGL0RV/Xxc9a/Zuh1Rgq9TklRklVxLwlUbfWPOWJslcn7lsy4YIIT2eNmpmOaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:08:49.642493Z"},"content_sha256":"f579f3dfdaeca489082282494236ec04bc3e668550dca0d1223af6fcfdc75c9c","schema_version":"1.0","event_id":"sha256:f579f3dfdaeca489082282494236ec04bc3e668550dca0d1223af6fcfdc75c9c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:MYDQYTO3RAKHHVEKDDWKCLJNSB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Parton Orbital Angular Momentum: Status and Prospects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat","nucl-th"],"primary_cat":"hep-ph","authors_text":"Cedric Lorce, Keh-Fei Liu","submitted_at":"2015-08-04T20:20:20Z","abstract_excerpt":"Theoretical progress on the formulation and classification of the quark and gluon orbital angular momenta (OAM) is reviewed. Their relation to parton distributions and open questions and puzzles are discussed. We give a status report on the lattice calculation of the parton kinetic and canonical OAM and point out several strategies to calculate the quark and gluon canonical OAM on the lattice."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00911","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":"2026-05-18T01:10:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hL3Mh8E+WmEFNrPhl31pBOHIB/k482xT+MLJuLnE2GFi8CNBi9cWxXF1m+D5z7r8r6nh3R4PAPIL+IffObpqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:08:49.643184Z"},"content_sha256":"02cbb5dbfef0907d594a0ecddb29deb813c11f0e4992f8b3415fa9d08f8b614d","schema_version":"1.0","event_id":"sha256:02cbb5dbfef0907d594a0ecddb29deb813c11f0e4992f8b3415fa9d08f8b614d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB/bundle.json","state_url":"https://pith.science/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB/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":"2026-05-30T12:08:49Z","links":{"resolver":"https://pith.science/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB","bundle":"https://pith.science/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB/bundle.json","state":"https://pith.science/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MYDQYTO3RAKHHVEKDDWKCLJNSB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:MYDQYTO3RAKHHVEKDDWKCLJNSB","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":"f7f9bd064dc5e0ca0f86b5808ffc34d150cc1dd588f4593d3f1fb818f796df2a","cross_cats_sorted":["hep-lat","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-04T20:20:20Z","title_canon_sha256":"9023ce449332fb1529cce571b0d33dcac393940be35341b659acb69a0b9cd666"},"schema_version":"1.0","source":{"id":"1508.00911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00911","created_at":"2026-05-18T01:10:54Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00911v1","created_at":"2026-05-18T01:10:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00911","created_at":"2026-05-18T01:10:54Z"},{"alias_kind":"pith_short_12","alias_value":"MYDQYTO3RAKH","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MYDQYTO3RAKHHVEK","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MYDQYTO3","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:02cbb5dbfef0907d594a0ecddb29deb813c11f0e4992f8b3415fa9d08f8b614d","target":"graph","created_at":"2026-05-18T01:10:54Z","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":"Theoretical progress on the formulation and classification of the quark and gluon orbital angular momenta (OAM) is reviewed. Their relation to parton distributions and open questions and puzzles are discussed. We give a status report on the lattice calculation of the parton kinetic and canonical OAM and point out several strategies to calculate the quark and gluon canonical OAM on the lattice.","authors_text":"Cedric Lorce, Keh-Fei Liu","cross_cats":["hep-lat","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-04T20:20:20Z","title":"The Parton Orbital Angular Momentum: Status and Prospects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00911","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:f579f3dfdaeca489082282494236ec04bc3e668550dca0d1223af6fcfdc75c9c","target":"record","created_at":"2026-05-18T01:10:54Z","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":"f7f9bd064dc5e0ca0f86b5808ffc34d150cc1dd588f4593d3f1fb818f796df2a","cross_cats_sorted":["hep-lat","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-04T20:20:20Z","title_canon_sha256":"9023ce449332fb1529cce571b0d33dcac393940be35341b659acb69a0b9cd666"},"schema_version":"1.0","source":{"id":"1508.00911","kind":"arxiv","version":1}},"canonical_sha256":"66070c4ddb881473d48a18eca12d2d90736f1ac83c6bc2533a9bda0db54eb53d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66070c4ddb881473d48a18eca12d2d90736f1ac83c6bc2533a9bda0db54eb53d","first_computed_at":"2026-05-18T01:10:54.121237Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:54.121237Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tuxWGYreh6Phvc2z+aFoYy8vingxiOIrJ4cIuY0C9fuxOtTcz1qS32uXM78CggwGDK0DDKDMcS+YSeOfghcwCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:54.121907Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.00911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f579f3dfdaeca489082282494236ec04bc3e668550dca0d1223af6fcfdc75c9c","sha256:02cbb5dbfef0907d594a0ecddb29deb813c11f0e4992f8b3415fa9d08f8b614d"],"state_sha256":"71333ceb8c434cef60014ed9f79e7567c854f0610e123451369c95afafd7ad04"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9iGg296ZzVC853UXzN5yhqYPTvFq66SzAR6GCG81FltXZPZefEjSRm6rhgWHD4mZMtBqzxlxqym9KdQLuceSBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T12:08:49.646771Z","bundle_sha256":"aec1c24b1852b29f5fcc5e9a16ae5dd764625c593ff1dfd5401565a8c9ab666a"}}