{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MLWD7UC27ASTWJ7D5K3XGF7R62","short_pith_number":"pith:MLWD7UC2","canonical_record":{"source":{"id":"1803.04004","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-11T18:33:09Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"8c0196fa9ee8b48acc225ad53ef75dc5c390b70cf5715890c97b6089c7ab8a9d","abstract_canon_sha256":"9dc9704a73da090876d8c079918c7233bf637fdb220b60febe200e1d0182bfd8"},"schema_version":"1.0"},"canonical_sha256":"62ec3fd05af8253b27e3eab77317f1f69452d2155f35c66b3b03733246b2fbbc","source":{"kind":"arxiv","id":"1803.04004","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.04004","created_at":"2026-05-18T00:05:31Z"},{"alias_kind":"arxiv_version","alias_value":"1803.04004v4","created_at":"2026-05-18T00:05:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.04004","created_at":"2026-05-18T00:05:31Z"},{"alias_kind":"pith_short_12","alias_value":"MLWD7UC27AST","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MLWD7UC27ASTWJ7D","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MLWD7UC2","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MLWD7UC27ASTWJ7D5K3XGF7R62","target":"record","payload":{"canonical_record":{"source":{"id":"1803.04004","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-11T18:33:09Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"8c0196fa9ee8b48acc225ad53ef75dc5c390b70cf5715890c97b6089c7ab8a9d","abstract_canon_sha256":"9dc9704a73da090876d8c079918c7233bf637fdb220b60febe200e1d0182bfd8"},"schema_version":"1.0"},"canonical_sha256":"62ec3fd05af8253b27e3eab77317f1f69452d2155f35c66b3b03733246b2fbbc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:31.877914Z","signature_b64":"84Uwjv3j7p4orQq3rBomSxoiMoQ1w12B8/XY8cMSld126m/xCprO3qfs3t+ONtOJKH8ktpLiMiKFgNmtXLkeDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62ec3fd05af8253b27e3eab77317f1f69452d2155f35c66b3b03733246b2fbbc","last_reissued_at":"2026-05-18T00:05:31.877475Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:31.877475Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.04004","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:05:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UQWyXNtjVzvHdm6+4J4rELN5/NiaU9KzIdvo0G9KydeyfXi6UX0MWBtbjXWbyVsMYJ4o4pV3q3JWEfy1H6D2Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T19:40:15.242004Z"},"content_sha256":"9dc0a83bd028466b4a22fa8defd12b646cd6d4daebc5bbe836cb2f08aab7cc43","schema_version":"1.0","event_id":"sha256:9dc0a83bd028466b4a22fa8defd12b646cd6d4daebc5bbe836cb2f08aab7cc43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MLWD7UC27ASTWJ7D5K3XGF7R62","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Target-normal single-spin asymmetry in elastic electron-nucleon scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Andrei Afanasev, Oleksandr Koshchii","submitted_at":"2018-03-11T18:33:09Z","abstract_excerpt":"We estimate the target-normal single-spin asymmetry at nearly forward angles in elastic electron-nucleon scattering. In the leading-order approximation, this asymmetry is proportional to the imaginary part of the two-photon exchange (TPE) amplitude, which can be expressed as an integral over the doubly virtual Compton scattering (VVCS) tensor. We develop a model that parametrizes the VVCS tensor for the case of nearly forward scattering angles. Our parametrization ensures a proper normalization of the imaginary part of the TPE amplitude on the well-known forward limit expression, which is give"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.04004","kind":"arxiv","version":4},"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":"2026-05-18T00:05:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QDaMYEGQTW642uKPrP789eHKcH8Oqn9XY5LmNY6WM7+EBGPCmd3FCl5TWHTx0hA4OC5aikEyN5cVU1WoPG08Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T19:40:15.242666Z"},"content_sha256":"a8691cf3c58ec8d6774907f951f21d1abe2c7ee0de0106ba720785dbc1d62f92","schema_version":"1.0","event_id":"sha256:a8691cf3c58ec8d6774907f951f21d1abe2c7ee0de0106ba720785dbc1d62f92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MLWD7UC27ASTWJ7D5K3XGF7R62/bundle.json","state_url":"https://pith.science/pith/MLWD7UC27ASTWJ7D5K3XGF7R62/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MLWD7UC27ASTWJ7D5K3XGF7R62/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":"2026-06-10T19:40:15Z","links":{"resolver":"https://pith.science/pith/MLWD7UC27ASTWJ7D5K3XGF7R62","bundle":"https://pith.science/pith/MLWD7UC27ASTWJ7D5K3XGF7R62/bundle.json","state":"https://pith.science/pith/MLWD7UC27ASTWJ7D5K3XGF7R62/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MLWD7UC27ASTWJ7D5K3XGF7R62/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MLWD7UC27ASTWJ7D5K3XGF7R62","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":"9dc9704a73da090876d8c079918c7233bf637fdb220b60febe200e1d0182bfd8","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-11T18:33:09Z","title_canon_sha256":"8c0196fa9ee8b48acc225ad53ef75dc5c390b70cf5715890c97b6089c7ab8a9d"},"schema_version":"1.0","source":{"id":"1803.04004","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.04004","created_at":"2026-05-18T00:05:31Z"},{"alias_kind":"arxiv_version","alias_value":"1803.04004v4","created_at":"2026-05-18T00:05:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.04004","created_at":"2026-05-18T00:05:31Z"},{"alias_kind":"pith_short_12","alias_value":"MLWD7UC27AST","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MLWD7UC27ASTWJ7D","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MLWD7UC2","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:a8691cf3c58ec8d6774907f951f21d1abe2c7ee0de0106ba720785dbc1d62f92","target":"graph","created_at":"2026-05-18T00:05:31Z","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 estimate the target-normal single-spin asymmetry at nearly forward angles in elastic electron-nucleon scattering. In the leading-order approximation, this asymmetry is proportional to the imaginary part of the two-photon exchange (TPE) amplitude, which can be expressed as an integral over the doubly virtual Compton scattering (VVCS) tensor. We develop a model that parametrizes the VVCS tensor for the case of nearly forward scattering angles. Our parametrization ensures a proper normalization of the imaginary part of the TPE amplitude on the well-known forward limit expression, which is give","authors_text":"Andrei Afanasev, Oleksandr Koshchii","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-11T18:33:09Z","title":"Target-normal single-spin asymmetry in elastic electron-nucleon scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.04004","kind":"arxiv","version":4},"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":"sha256:9dc0a83bd028466b4a22fa8defd12b646cd6d4daebc5bbe836cb2f08aab7cc43","target":"record","created_at":"2026-05-18T00:05:31Z","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":"9dc9704a73da090876d8c079918c7233bf637fdb220b60febe200e1d0182bfd8","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-11T18:33:09Z","title_canon_sha256":"8c0196fa9ee8b48acc225ad53ef75dc5c390b70cf5715890c97b6089c7ab8a9d"},"schema_version":"1.0","source":{"id":"1803.04004","kind":"arxiv","version":4}},"canonical_sha256":"62ec3fd05af8253b27e3eab77317f1f69452d2155f35c66b3b03733246b2fbbc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62ec3fd05af8253b27e3eab77317f1f69452d2155f35c66b3b03733246b2fbbc","first_computed_at":"2026-05-18T00:05:31.877475Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:31.877475Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"84Uwjv3j7p4orQq3rBomSxoiMoQ1w12B8/XY8cMSld126m/xCprO3qfs3t+ONtOJKH8ktpLiMiKFgNmtXLkeDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:31.877914Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.04004","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9dc0a83bd028466b4a22fa8defd12b646cd6d4daebc5bbe836cb2f08aab7cc43","sha256:a8691cf3c58ec8d6774907f951f21d1abe2c7ee0de0106ba720785dbc1d62f92"],"state_sha256":"3806dd599571bdae6a510d49996092bf7cbfaafd645f26e1d1e3f8163da173d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1IOE+ZgzMhYSLUK2/5rsSSg1w2/dTkNPJnzBxtiCRKTdehfsqgWPDqG1YtXMOZMc6pr5uobI61mhxBUvSlkIBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T19:40:15.246655Z","bundle_sha256":"fca05f59d4204a499f45a926dbd625fc289abfc12335f8e97b8ce43b7338819f"}}