{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:EXH7MVX65UIZ2G6VXZWAFREDO5","short_pith_number":"pith:EXH7MVX6","canonical_record":{"source":{"id":"nucl-th/9506029","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1995-06-29T17:13:18Z","cross_cats_sorted":[],"title_canon_sha256":"0ea0ccac71e00416d4cea6fd26651a5c1bcca3e52372a0990bafa3c49473d0c3","abstract_canon_sha256":"f7e387000189d7e0c8b70a55addc7b1b6e38da828096cfcbd6be181f4000985b"},"schema_version":"1.0"},"canonical_sha256":"25cff656feed119d1bd5be6c02c483774bf6fe10d0687de36bf8aa9ce3629658","source":{"kind":"arxiv","id":"nucl-th/9506029","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9506029","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9506029v1","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9506029","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"pith_short_12","alias_value":"EXH7MVX65UIZ","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"pith_short_16","alias_value":"EXH7MVX65UIZ2G6V","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"pith_short_8","alias_value":"EXH7MVX6","created_at":"2026-07-04T15:21:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:EXH7MVX65UIZ2G6VXZWAFREDO5","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/9506029","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1995-06-29T17:13:18Z","cross_cats_sorted":[],"title_canon_sha256":"0ea0ccac71e00416d4cea6fd26651a5c1bcca3e52372a0990bafa3c49473d0c3","abstract_canon_sha256":"f7e387000189d7e0c8b70a55addc7b1b6e38da828096cfcbd6be181f4000985b"},"schema_version":"1.0"},"canonical_sha256":"25cff656feed119d1bd5be6c02c483774bf6fe10d0687de36bf8aa9ce3629658","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:21:40.249296Z","signature_b64":"wCuUMjJK2QCVOZax7Z3KX87TGwsp1mIjk5jsCHTOEUImnKv4Stq7B+wGdwPF9eBkyn8qvLsV86ueG8xIYCB4DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25cff656feed119d1bd5be6c02c483774bf6fe10d0687de36bf8aa9ce3629658","last_reissued_at":"2026-07-04T15:21:40.248873Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:21:40.248873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/9506029","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":"2026-07-04T15:21:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"19l+oUBjKYNlgBDPZKOZ/wwYCrVrl34hJQQq5Kcwsg7WRviKolER55gGOu3J9LUg/WEXxLpR0QRRQA5qt6GgDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T20:03:47.614045Z"},"content_sha256":"d950932fc0a2021cbae20a31cf7962c6d247eeafb0fb7ed16a590a99738adb58","schema_version":"1.0","event_id":"sha256:d950932fc0a2021cbae20a31cf7962c6d247eeafb0fb7ed16a590a99738adb58"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:EXH7MVX65UIZ2G6VXZWAFREDO5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photo- and Electroproduction of Eta Mesons","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"D. Drechsel, Germany), G. Kn\\\"ochlein, L. Tiator (Inst.Nucl.Phys., Mainz","submitted_at":"1995-06-29T17:13:18Z","abstract_excerpt":"Eta photo- and electroproduction off the nucleon is investigated in an effective lagrangian approach that contains Born terms and both vector meson and nucleon resonance contributions. In particular, we review and develop the formalism for coincidence experiments with polarization degrees of freedom. The different response functions appearing in single and double polarization experiments have been studied. We will present calculations for structure functions and kinematical conditions that are most sensitive to details of the lagrangian, in particular with regard to contributions of nucleon re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9506029","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/nucl-th/9506029/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":"2026-07-04T15:21:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ndPwhDN9h2VwA9A0gXj4k3Roiufh/W/8/PU8nd6/Ueqh1PYtUctKIDQd1KNSxO/Rw+SgLXzTIRxMjQ3h1nXyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T20:03:47.614557Z"},"content_sha256":"c30095c19aea41c882089f658a7ab99260d7746d3e8bd9b2ce53b6777cbabd4e","schema_version":"1.0","event_id":"sha256:c30095c19aea41c882089f658a7ab99260d7746d3e8bd9b2ce53b6777cbabd4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EXH7MVX65UIZ2G6VXZWAFREDO5/bundle.json","state_url":"https://pith.science/pith/EXH7MVX65UIZ2G6VXZWAFREDO5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EXH7MVX65UIZ2G6VXZWAFREDO5/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":"2026-08-08T20:03:47Z","links":{"resolver":"https://pith.science/pith/EXH7MVX65UIZ2G6VXZWAFREDO5","bundle":"https://pith.science/pith/EXH7MVX65UIZ2G6VXZWAFREDO5/bundle.json","state":"https://pith.science/pith/EXH7MVX65UIZ2G6VXZWAFREDO5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EXH7MVX65UIZ2G6VXZWAFREDO5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:EXH7MVX65UIZ2G6VXZWAFREDO5","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":"f7e387000189d7e0c8b70a55addc7b1b6e38da828096cfcbd6be181f4000985b","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1995-06-29T17:13:18Z","title_canon_sha256":"0ea0ccac71e00416d4cea6fd26651a5c1bcca3e52372a0990bafa3c49473d0c3"},"schema_version":"1.0","source":{"id":"nucl-th/9506029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9506029","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9506029v1","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9506029","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"pith_short_12","alias_value":"EXH7MVX65UIZ","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"pith_short_16","alias_value":"EXH7MVX65UIZ2G6V","created_at":"2026-07-04T15:21:40Z"},{"alias_kind":"pith_short_8","alias_value":"EXH7MVX6","created_at":"2026-07-04T15:21:40Z"}],"graph_snapshots":[{"event_id":"sha256:c30095c19aea41c882089f658a7ab99260d7746d3e8bd9b2ce53b6777cbabd4e","target":"graph","created_at":"2026-07-04T15:21:40Z","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/nucl-th/9506029/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Eta photo- and electroproduction off the nucleon is investigated in an effective lagrangian approach that contains Born terms and both vector meson and nucleon resonance contributions. In particular, we review and develop the formalism for coincidence experiments with polarization degrees of freedom. The different response functions appearing in single and double polarization experiments have been studied. We will present calculations for structure functions and kinematical conditions that are most sensitive to details of the lagrangian, in particular with regard to contributions of nucleon re","authors_text":"D. Drechsel, Germany), G. Kn\\\"ochlein, L. Tiator (Inst.Nucl.Phys., Mainz","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1995-06-29T17:13:18Z","title":"Photo- and Electroproduction of Eta Mesons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9506029","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:d950932fc0a2021cbae20a31cf7962c6d247eeafb0fb7ed16a590a99738adb58","target":"record","created_at":"2026-07-04T15:21:40Z","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":"f7e387000189d7e0c8b70a55addc7b1b6e38da828096cfcbd6be181f4000985b","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1995-06-29T17:13:18Z","title_canon_sha256":"0ea0ccac71e00416d4cea6fd26651a5c1bcca3e52372a0990bafa3c49473d0c3"},"schema_version":"1.0","source":{"id":"nucl-th/9506029","kind":"arxiv","version":1}},"canonical_sha256":"25cff656feed119d1bd5be6c02c483774bf6fe10d0687de36bf8aa9ce3629658","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25cff656feed119d1bd5be6c02c483774bf6fe10d0687de36bf8aa9ce3629658","first_computed_at":"2026-07-04T15:21:40.248873Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:21:40.248873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wCuUMjJK2QCVOZax7Z3KX87TGwsp1mIjk5jsCHTOEUImnKv4Stq7B+wGdwPF9eBkyn8qvLsV86ueG8xIYCB4DQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:21:40.249296Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9506029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d950932fc0a2021cbae20a31cf7962c6d247eeafb0fb7ed16a590a99738adb58","sha256:c30095c19aea41c882089f658a7ab99260d7746d3e8bd9b2ce53b6777cbabd4e"],"state_sha256":"8b66fcaf4c76d0b26bb049aa462f2d877f1920ac348387e654f25c263eb4dfc6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C+6+pTdGlUsKY/gw1S005WtsXKffxD32EBbUq710IO+KwzJkUKtVEmhQiuR5Dz34RogrZdS9t7Kf/pXCn6KvAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T20:03:47.619533Z","bundle_sha256":"9f73918d298a32d4907b98f7f68d84a8b5d0420ee08968b9d6650516b1c5dbcb"}}