{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:EA52NWYBWST4Q6WOTLVCYQVP43","short_pith_number":"pith:EA52NWYB","canonical_record":{"source":{"id":"hep-ex/9709021","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"1997-09-22T14:16:23Z","cross_cats_sorted":[],"title_canon_sha256":"141d6ad6fa7e23189fe008ac9c823fa4318c9e787e5e55e9bd4bbdcfd6c53c0b","abstract_canon_sha256":"67e8b9bba3f986f07368150799d482129516d430454beb4670cf2730b1b0051e"},"schema_version":"1.0"},"canonical_sha256":"203ba6db01b4a7c87ace9aea2c42afe6cff9abb121ccdee5fcd62446f8278589","source":{"kind":"arxiv","id":"hep-ex/9709021","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/9709021","created_at":"2026-05-18T03:47:21Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/9709021v3","created_at":"2026-05-18T03:47:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/9709021","created_at":"2026-05-18T03:47:21Z"},{"alias_kind":"pith_short_12","alias_value":"EA52NWYBWST4","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"EA52NWYBWST4Q6WO","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"EA52NWYB","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:EA52NWYBWST4Q6WOTLVCYQVP43","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ex/9709021","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"1997-09-22T14:16:23Z","cross_cats_sorted":[],"title_canon_sha256":"141d6ad6fa7e23189fe008ac9c823fa4318c9e787e5e55e9bd4bbdcfd6c53c0b","abstract_canon_sha256":"67e8b9bba3f986f07368150799d482129516d430454beb4670cf2730b1b0051e"},"schema_version":"1.0"},"canonical_sha256":"203ba6db01b4a7c87ace9aea2c42afe6cff9abb121ccdee5fcd62446f8278589","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:21.574240Z","signature_b64":"QmO1qjzwz8/EbpyuTzz/FvDI/RF+y7F63pgA5m/xqDUOqABXEZnItCECwl/eD4muOrwxyGn5oNxN5hLCPIRyAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"203ba6db01b4a7c87ace9aea2c42afe6cff9abb121ccdee5fcd62446f8278589","last_reissued_at":"2026-05-18T03:47:21.573718Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:21.573718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ex/9709021","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:47:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hIpnm5u24y/F/A+End+q1Pfu23KCgGO9uw0YoRaPk1PeVZl7Bo2hRv8Fq4e9okhXb36uQxFNhEX3PLPwrZalCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:22:18.568202Z"},"content_sha256":"b9af969cb1c1f5a64720bf3371c3e53e9d54575a79dd5b4ce9ea0b70f5983e28","schema_version":"1.0","event_id":"sha256:b9af969cb1c1f5a64720bf3371c3e53e9d54575a79dd5b4ce9ea0b70f5983e28"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:EA52NWYBWST4Q6WOTLVCYQVP43","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of the Diffractive Structure Function F_2^D(4) at HERA","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"ZEUS Collaboration","submitted_at":"1997-09-22T14:16:23Z","abstract_excerpt":"This paper presents the first analysis of diffractive photon dissociation events in deep inelastic positron-proton scattering at HERA in which the proton in the final state is detected and its momentum measured. The events are selected by requiring a scattered proton in the ZEUS leading proton spectrometer (LPS) with $\\xl>0.97$, where $\\xl$ is the fraction of the incoming proton beam momentum carried by the scattered proton. The use of the LPS significantly reduces the contamination from events with diffractive dissociation of the proton into low mass states and allows a direct measurement of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9709021","kind":"arxiv","version":3},"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":"2026-05-18T03:47:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SWZcBzTG36VLyk+xCdPV1JBgjxyIMGtQk31t7zu1Gc9xRZZbYrYcwr0NVj/s6pKZA8r7R1Gm3JpWLpnPyRU3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:22:18.568572Z"},"content_sha256":"a79bc7a4a2e9ab9a409bc11bebff0a4881b6e71e29bef243369d2c40dbfb3665","schema_version":"1.0","event_id":"sha256:a79bc7a4a2e9ab9a409bc11bebff0a4881b6e71e29bef243369d2c40dbfb3665"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EA52NWYBWST4Q6WOTLVCYQVP43/bundle.json","state_url":"https://pith.science/pith/EA52NWYBWST4Q6WOTLVCYQVP43/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EA52NWYBWST4Q6WOTLVCYQVP43/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":"2026-06-06T15:22:18Z","links":{"resolver":"https://pith.science/pith/EA52NWYBWST4Q6WOTLVCYQVP43","bundle":"https://pith.science/pith/EA52NWYBWST4Q6WOTLVCYQVP43/bundle.json","state":"https://pith.science/pith/EA52NWYBWST4Q6WOTLVCYQVP43/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EA52NWYBWST4Q6WOTLVCYQVP43/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:EA52NWYBWST4Q6WOTLVCYQVP43","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":"67e8b9bba3f986f07368150799d482129516d430454beb4670cf2730b1b0051e","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"1997-09-22T14:16:23Z","title_canon_sha256":"141d6ad6fa7e23189fe008ac9c823fa4318c9e787e5e55e9bd4bbdcfd6c53c0b"},"schema_version":"1.0","source":{"id":"hep-ex/9709021","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/9709021","created_at":"2026-05-18T03:47:21Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/9709021v3","created_at":"2026-05-18T03:47:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/9709021","created_at":"2026-05-18T03:47:21Z"},{"alias_kind":"pith_short_12","alias_value":"EA52NWYBWST4","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"EA52NWYBWST4Q6WO","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"EA52NWYB","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:a79bc7a4a2e9ab9a409bc11bebff0a4881b6e71e29bef243369d2c40dbfb3665","target":"graph","created_at":"2026-05-18T03:47:21Z","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":"This paper presents the first analysis of diffractive photon dissociation events in deep inelastic positron-proton scattering at HERA in which the proton in the final state is detected and its momentum measured. The events are selected by requiring a scattered proton in the ZEUS leading proton spectrometer (LPS) with $\\xl>0.97$, where $\\xl$ is the fraction of the incoming proton beam momentum carried by the scattered proton. The use of the LPS significantly reduces the contamination from events with diffractive dissociation of the proton into low mass states and allows a direct measurement of ","authors_text":"ZEUS Collaboration","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"1997-09-22T14:16:23Z","title":"Measurement of the Diffractive Structure Function F_2^D(4) at HERA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9709021","kind":"arxiv","version":3},"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:b9af969cb1c1f5a64720bf3371c3e53e9d54575a79dd5b4ce9ea0b70f5983e28","target":"record","created_at":"2026-05-18T03:47:21Z","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":"67e8b9bba3f986f07368150799d482129516d430454beb4670cf2730b1b0051e","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"1997-09-22T14:16:23Z","title_canon_sha256":"141d6ad6fa7e23189fe008ac9c823fa4318c9e787e5e55e9bd4bbdcfd6c53c0b"},"schema_version":"1.0","source":{"id":"hep-ex/9709021","kind":"arxiv","version":3}},"canonical_sha256":"203ba6db01b4a7c87ace9aea2c42afe6cff9abb121ccdee5fcd62446f8278589","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"203ba6db01b4a7c87ace9aea2c42afe6cff9abb121ccdee5fcd62446f8278589","first_computed_at":"2026-05-18T03:47:21.573718Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:47:21.573718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QmO1qjzwz8/EbpyuTzz/FvDI/RF+y7F63pgA5m/xqDUOqABXEZnItCECwl/eD4muOrwxyGn5oNxN5hLCPIRyAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:47:21.574240Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/9709021","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9af969cb1c1f5a64720bf3371c3e53e9d54575a79dd5b4ce9ea0b70f5983e28","sha256:a79bc7a4a2e9ab9a409bc11bebff0a4881b6e71e29bef243369d2c40dbfb3665"],"state_sha256":"2d3cccfc7f717fba87c0a4261349175a2d4c5acbd6f86f7c999d165d133a9a2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VsnLLqJns7zt7tS1ozAeOFkweDedw1dpgHj+tzbloK8/xB9V48wyGI/g8XvoIbeEssV8dwxcl6/GI6Xj7ePgDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:22:18.570632Z","bundle_sha256":"a44a1dbf54cc38410ef6890926fba50c41c1d5c5a380295ceb07fd877ca66122"}}