{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:3CKMQEKP43H2Q3SRQMPSPHIXQD","short_pith_number":"pith:3CKMQEKP","canonical_record":{"source":{"id":"hep-ph/9912490","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-12-23T15:26:26Z","cross_cats_sorted":[],"title_canon_sha256":"9cfb0e05c8a446141ac7feb03d9b8fda463429fe19deb86712552f1288a3c4e7","abstract_canon_sha256":"5bf339d5fa2fff88305c5d0815afd3d7de0d390b065d4dc6dae32fac43ad45ad"},"schema_version":"1.0"},"canonical_sha256":"d894c8114fe6cfa86e51831f279d1780cd9329f9d2892194a8a9399d3ec85544","source":{"kind":"arxiv","id":"hep-ph/9912490","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9912490","created_at":"2026-05-18T04:17:36Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9912490v2","created_at":"2026-05-18T04:17:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9912490","created_at":"2026-05-18T04:17:36Z"},{"alias_kind":"pith_short_12","alias_value":"3CKMQEKP43H2","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"3CKMQEKP43H2Q3SR","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"3CKMQEKP","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:3CKMQEKP43H2Q3SRQMPSPHIXQD","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9912490","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-12-23T15:26:26Z","cross_cats_sorted":[],"title_canon_sha256":"9cfb0e05c8a446141ac7feb03d9b8fda463429fe19deb86712552f1288a3c4e7","abstract_canon_sha256":"5bf339d5fa2fff88305c5d0815afd3d7de0d390b065d4dc6dae32fac43ad45ad"},"schema_version":"1.0"},"canonical_sha256":"d894c8114fe6cfa86e51831f279d1780cd9329f9d2892194a8a9399d3ec85544","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:36.951657Z","signature_b64":"gKlO1sCJglAYNMVhttrYZcR0LqUsGXsQDuDxMyDjT1RvZlYgK3iTevvfzl3T2C+MXX4eSueP6ZLMHDqeU53VAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d894c8114fe6cfa86e51831f279d1780cd9329f9d2892194a8a9399d3ec85544","last_reissued_at":"2026-05-18T04:17:36.951265Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:36.951265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9912490","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":"2026-05-18T04:17:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rrgUQnDruYEPlc4GqaBkO38dn3D3v/Q5I86FP6h9cuodWK/k+7cn7nu0aLLyMoHns29ZEgklHBtIk69JdAizCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T02:14:29.410707Z"},"content_sha256":"b4973332235ee8cb2c919bd90673378c2e5413c1936ca57b891cc47a16eda71f","schema_version":"1.0","event_id":"sha256:b4973332235ee8cb2c919bd90673378c2e5413c1936ca57b891cc47a16eda71f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:3CKMQEKP43H2Q3SRQMPSPHIXQD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bounds on transverse momentum dependent distribution and fragmentation functions","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Bacchetta, A. Henneman, M. Boglione, P.J. Mulders","submitted_at":"1999-12-23T15:26:26Z","abstract_excerpt":"We give bounds on the distribution and fragmentation functions that appear at leading order in deep inelastic 1-particle inclusive leptoproduction or in Drell-Yan processes. These bounds simply follow from positivity of the defining matrix elements and are an important guidance in estimating the magnitude of the azimuthal and spin asymmetries in these processes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9912490","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":""},"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":"2026-05-18T04:17:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8+59PlAC7dL6Q06EpXS4Kf9djskwMua5VTzdFNV9j+VPoqKwA6IGNj5CNtcDsKDv7buEm0tCOaVoBm12s98fAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T02:14:29.411053Z"},"content_sha256":"13565741be95a1b1c57d30dbc9030cf176d4a7f46e6f864d9bb05d45a421230d","schema_version":"1.0","event_id":"sha256:13565741be95a1b1c57d30dbc9030cf176d4a7f46e6f864d9bb05d45a421230d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD/bundle.json","state_url":"https://pith.science/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD/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":"2026-05-23T02:14:29Z","links":{"resolver":"https://pith.science/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD","bundle":"https://pith.science/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD/bundle.json","state":"https://pith.science/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3CKMQEKP43H2Q3SRQMPSPHIXQD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:3CKMQEKP43H2Q3SRQMPSPHIXQD","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":"5bf339d5fa2fff88305c5d0815afd3d7de0d390b065d4dc6dae32fac43ad45ad","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-12-23T15:26:26Z","title_canon_sha256":"9cfb0e05c8a446141ac7feb03d9b8fda463429fe19deb86712552f1288a3c4e7"},"schema_version":"1.0","source":{"id":"hep-ph/9912490","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9912490","created_at":"2026-05-18T04:17:36Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9912490v2","created_at":"2026-05-18T04:17:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9912490","created_at":"2026-05-18T04:17:36Z"},{"alias_kind":"pith_short_12","alias_value":"3CKMQEKP43H2","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"3CKMQEKP43H2Q3SR","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"3CKMQEKP","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:13565741be95a1b1c57d30dbc9030cf176d4a7f46e6f864d9bb05d45a421230d","target":"graph","created_at":"2026-05-18T04:17:36Z","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":"We give bounds on the distribution and fragmentation functions that appear at leading order in deep inelastic 1-particle inclusive leptoproduction or in Drell-Yan processes. These bounds simply follow from positivity of the defining matrix elements and are an important guidance in estimating the magnitude of the azimuthal and spin asymmetries in these processes.","authors_text":"A. Bacchetta, A. Henneman, M. Boglione, P.J. Mulders","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1999-12-23T15:26:26Z","title":"Bounds on transverse momentum dependent distribution and fragmentation functions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9912490","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:b4973332235ee8cb2c919bd90673378c2e5413c1936ca57b891cc47a16eda71f","target":"record","created_at":"2026-05-18T04:17:36Z","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":"5bf339d5fa2fff88305c5d0815afd3d7de0d390b065d4dc6dae32fac43ad45ad","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-12-23T15:26:26Z","title_canon_sha256":"9cfb0e05c8a446141ac7feb03d9b8fda463429fe19deb86712552f1288a3c4e7"},"schema_version":"1.0","source":{"id":"hep-ph/9912490","kind":"arxiv","version":2}},"canonical_sha256":"d894c8114fe6cfa86e51831f279d1780cd9329f9d2892194a8a9399d3ec85544","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d894c8114fe6cfa86e51831f279d1780cd9329f9d2892194a8a9399d3ec85544","first_computed_at":"2026-05-18T04:17:36.951265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:17:36.951265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gKlO1sCJglAYNMVhttrYZcR0LqUsGXsQDuDxMyDjT1RvZlYgK3iTevvfzl3T2C+MXX4eSueP6ZLMHDqeU53VAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:17:36.951657Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9912490","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4973332235ee8cb2c919bd90673378c2e5413c1936ca57b891cc47a16eda71f","sha256:13565741be95a1b1c57d30dbc9030cf176d4a7f46e6f864d9bb05d45a421230d"],"state_sha256":"f76c8a9baf4fcec57ce67d262134c84ec4915d05c100e398cee7107adcb588c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j69LR/5OHIL7t8B2FkFkuiVm3ywMzjhgOYkZxUVyMpUkU9I0oKrpF9XcRHnUamnBeR3GsvCfyu1z7zzQir9TAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T02:14:29.413265Z","bundle_sha256":"2ecec079164d61b05fcd5d7a4749763724dbc51ebf86adffe73f53afc2f01f4c"}}