{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:PIJYEX6DENOLVODPBI4PZM4XQI","short_pith_number":"pith:PIJYEX6D","canonical_record":{"source":{"id":"1012.1554","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-07T17:06:49Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"efccb81b903ce9b6e23d46056ea9a66b79b3a26b18b40941de1b85db3c0d38d2","abstract_canon_sha256":"5be1372f850ed5da14b1420336e2541a8ed0ebe4c2fd3bd0e4534551d184ad88"},"schema_version":"1.0"},"canonical_sha256":"7a13825fc3235cbab86f0a38fcb397821cf04398a86b92f7cbe5ebaa0649b142","source":{"kind":"arxiv","id":"1012.1554","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.1554","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1012.1554v1","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.1554","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"PIJYEX6DENOL","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"pith_short_16","alias_value":"PIJYEX6DENOLVODP","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"pith_short_8","alias_value":"PIJYEX6D","created_at":"2026-07-04T23:54:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:PIJYEX6DENOLVODPBI4PZM4XQI","target":"record","payload":{"canonical_record":{"source":{"id":"1012.1554","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-07T17:06:49Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"efccb81b903ce9b6e23d46056ea9a66b79b3a26b18b40941de1b85db3c0d38d2","abstract_canon_sha256":"5be1372f850ed5da14b1420336e2541a8ed0ebe4c2fd3bd0e4534551d184ad88"},"schema_version":"1.0"},"canonical_sha256":"7a13825fc3235cbab86f0a38fcb397821cf04398a86b92f7cbe5ebaa0649b142","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:54:43.255496Z","signature_b64":"0zzrfKzF8woNT3MaDCVTfhq4uBaFW0PBowQ57HJFJlJbRvdoPQMuoDCpUahyx5G7+dO3j68qwQ26m3ssriZ7Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a13825fc3235cbab86f0a38fcb397821cf04398a86b92f7cbe5ebaa0649b142","last_reissued_at":"2026-07-04T23:54:43.255119Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:54:43.255119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.1554","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":"2026-07-04T23:54:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1TMRK+5Rn5yOp7VszO677bhZJR9q5PcoLO/XarFrYmtGykZvcfcM1U6o37C9ihG5Tsn5ANN4Wmiq9+Pf5j3qBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T22:14:14.928090Z"},"content_sha256":"4bd28a6cfa60281657ba09eaa7fccb1cab4990c4a13cca7b7595411d01e9b6f3","schema_version":"1.0","event_id":"sha256:4bd28a6cfa60281657ba09eaa7fccb1cab4990c4a13cca7b7595411d01e9b6f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:PIJYEX6DENOLVODPBI4PZM4XQI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multiparton interactions in ep scattering at HERA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"H. Jung (DESY Hamburg, Univ. Antwerp) (for the H1, ZEUS collaboration)","submitted_at":"2010-12-07T17:06:49Z","abstract_excerpt":"Measurements of jet production in the photoproduction region at HERA are presented, which are sensitive to the underlying event structure. It is argued that in the photoproduction region a significant amount of multi-parton interactions in the collinear factorisation ansatz are needed to describe the measurement. A different approach for higher order parton radiation (CCFM parton showers) can also describe the measurement."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.1554","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/1012.1554/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":"2026-07-04T23:54:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pwJ929kHp1Z2VUYKKGFHDjjfuUlt/vYuUXD9rCEz6zagsyAgiwpMGIJO/HQux9NoZAPc+tjtEm8BmaUQQgmqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T22:14:14.928582Z"},"content_sha256":"25453ee787c1485984baf2bcfda5454d0b12b8d72bf50422b275075480add71e","schema_version":"1.0","event_id":"sha256:25453ee787c1485984baf2bcfda5454d0b12b8d72bf50422b275075480add71e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PIJYEX6DENOLVODPBI4PZM4XQI/bundle.json","state_url":"https://pith.science/pith/PIJYEX6DENOLVODPBI4PZM4XQI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PIJYEX6DENOLVODPBI4PZM4XQI/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":"2026-08-10T22:14:14Z","links":{"resolver":"https://pith.science/pith/PIJYEX6DENOLVODPBI4PZM4XQI","bundle":"https://pith.science/pith/PIJYEX6DENOLVODPBI4PZM4XQI/bundle.json","state":"https://pith.science/pith/PIJYEX6DENOLVODPBI4PZM4XQI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PIJYEX6DENOLVODPBI4PZM4XQI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:PIJYEX6DENOLVODPBI4PZM4XQI","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":"5be1372f850ed5da14b1420336e2541a8ed0ebe4c2fd3bd0e4534551d184ad88","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-07T17:06:49Z","title_canon_sha256":"efccb81b903ce9b6e23d46056ea9a66b79b3a26b18b40941de1b85db3c0d38d2"},"schema_version":"1.0","source":{"id":"1012.1554","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.1554","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1012.1554v1","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.1554","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"PIJYEX6DENOL","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"pith_short_16","alias_value":"PIJYEX6DENOLVODP","created_at":"2026-07-04T23:54:43Z"},{"alias_kind":"pith_short_8","alias_value":"PIJYEX6D","created_at":"2026-07-04T23:54:43Z"}],"graph_snapshots":[{"event_id":"sha256:25453ee787c1485984baf2bcfda5454d0b12b8d72bf50422b275075480add71e","target":"graph","created_at":"2026-07-04T23:54:43Z","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/1012.1554/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Measurements of jet production in the photoproduction region at HERA are presented, which are sensitive to the underlying event structure. It is argued that in the photoproduction region a significant amount of multi-parton interactions in the collinear factorisation ansatz are needed to describe the measurement. A different approach for higher order parton radiation (CCFM parton showers) can also describe the measurement.","authors_text":"H. Jung (DESY Hamburg, Univ. Antwerp) (for the H1, ZEUS collaboration)","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-07T17:06:49Z","title":"Multiparton interactions in ep scattering at HERA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.1554","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":"sha256:4bd28a6cfa60281657ba09eaa7fccb1cab4990c4a13cca7b7595411d01e9b6f3","target":"record","created_at":"2026-07-04T23:54:43Z","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":"5be1372f850ed5da14b1420336e2541a8ed0ebe4c2fd3bd0e4534551d184ad88","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-07T17:06:49Z","title_canon_sha256":"efccb81b903ce9b6e23d46056ea9a66b79b3a26b18b40941de1b85db3c0d38d2"},"schema_version":"1.0","source":{"id":"1012.1554","kind":"arxiv","version":1}},"canonical_sha256":"7a13825fc3235cbab86f0a38fcb397821cf04398a86b92f7cbe5ebaa0649b142","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a13825fc3235cbab86f0a38fcb397821cf04398a86b92f7cbe5ebaa0649b142","first_computed_at":"2026-07-04T23:54:43.255119Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:54:43.255119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0zzrfKzF8woNT3MaDCVTfhq4uBaFW0PBowQ57HJFJlJbRvdoPQMuoDCpUahyx5G7+dO3j68qwQ26m3ssriZ7Aw==","signature_status":"signed_v1","signed_at":"2026-07-04T23:54:43.255496Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.1554","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bd28a6cfa60281657ba09eaa7fccb1cab4990c4a13cca7b7595411d01e9b6f3","sha256:25453ee787c1485984baf2bcfda5454d0b12b8d72bf50422b275075480add71e"],"state_sha256":"bee3ce14ebbcaf1e4210f9a49b9ca9f1d9358589bd00390e4d0ba4fb81d14c30"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"imcB+ahU28z6spVYrbvT61acuMwVYRSXDIRyMJwxVjhOhocuBnXuLm5hCePp7h6fbpU/evWyHfC7kqi+pcT/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T22:14:14.933960Z","bundle_sha256":"ba077480936b59aa4e7ac00f0161d9862d7ff5bcbe13a29fb8347301b0aff113"}}