{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PL76QISYI5NJMXB23ND64VBPJT","short_pith_number":"pith:PL76QISY","canonical_record":{"source":{"id":"1702.08027","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-02-26T12:49:35Z","cross_cats_sorted":[],"title_canon_sha256":"cddcba4a7c157c41ebca9c1e28cc1514de673a90ccf3aa6078b9dbde37f2ddbb","abstract_canon_sha256":"5a5a8cd7580e6004f4f7b2a5b4fc8db87b298af1545583b49d812a11582bfcc7"},"schema_version":"1.0"},"canonical_sha256":"7affe82258475a965c3adb47ee542f4cdb2d071b648aa9701f72a59808987cb1","source":{"kind":"arxiv","id":"1702.08027","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.08027","created_at":"2026-05-18T00:43:45Z"},{"alias_kind":"arxiv_version","alias_value":"1702.08027v2","created_at":"2026-05-18T00:43:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.08027","created_at":"2026-05-18T00:43:45Z"},{"alias_kind":"pith_short_12","alias_value":"PL76QISYI5NJ","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PL76QISYI5NJMXB2","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PL76QISY","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PL76QISYI5NJMXB23ND64VBPJT","target":"record","payload":{"canonical_record":{"source":{"id":"1702.08027","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-02-26T12:49:35Z","cross_cats_sorted":[],"title_canon_sha256":"cddcba4a7c157c41ebca9c1e28cc1514de673a90ccf3aa6078b9dbde37f2ddbb","abstract_canon_sha256":"5a5a8cd7580e6004f4f7b2a5b4fc8db87b298af1545583b49d812a11582bfcc7"},"schema_version":"1.0"},"canonical_sha256":"7affe82258475a965c3adb47ee542f4cdb2d071b648aa9701f72a59808987cb1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:45.002151Z","signature_b64":"eELfXvmOSpx5ld7qktCszZ78aZcC9IhqLK6IABAyWkB6om/yYm6lOOVOlV12hLNRfWtwJFhsG9Ax/MlrrBn4DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7affe82258475a965c3adb47ee542f4cdb2d071b648aa9701f72a59808987cb1","last_reissued_at":"2026-05-18T00:43:45.001408Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:45.001408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.08027","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":"2026-05-18T00:43:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UxScZt0LOhv2l80/8uuAYmy4Nvu4lStmiXZSeMcU/AZgUeHHQipHAeJXw3vGLq0PkwMzBoIrGPGma1Q7+jWjCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:48:20.776802Z"},"content_sha256":"18b1342d2d24793071d668330e63765fa4c457203f7dd414f99ec12a6cf3c985","schema_version":"1.0","event_id":"sha256:18b1342d2d24793071d668330e63765fa4c457203f7dd414f99ec12a6cf3c985"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PL76QISYI5NJMXB23ND64VBPJT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phenomenological extraction of two-photon exchange amplitudes from elastic electron-proton scattering cross section data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"I. A. Qattan","submitted_at":"2017-02-26T12:49:35Z","abstract_excerpt":"In this work, I improve on and extend to low and high $Q^2$ values the extractions of the $\\varepsilon$ dependence of the real parts of the two-photon exchange (TPE) amplitudes relative to the magnetic form factor, as well as the ratio $P_l/P_l^{Born} (\\varepsilon,Q^2)$ by using world data on $\\sigma_R(\\varepsilon,Q^2)$ with an emphasis on precise new data covering the low-momentum region which is sensitive to the large-scale structure of the nucleon. I provide simple parametrizations of the TPE amplitudes, along with an estimate of the fit uncertainties. The extracted TPE amplitudes are compa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.08027","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":"2026-05-18T00:43:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ziua3PTbusQmbLqAnvgSM2VxGRWUZoFo4UJQdhbXFpUbJprGqJR3Akhpc1VJXllBPG9hnvEQxj/rM+n3KxxKAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:48:20.777465Z"},"content_sha256":"79c18d6d9550379e39e229e8d3bfdff40a151436f36df8025d32f68b1c0347a3","schema_version":"1.0","event_id":"sha256:79c18d6d9550379e39e229e8d3bfdff40a151436f36df8025d32f68b1c0347a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PL76QISYI5NJMXB23ND64VBPJT/bundle.json","state_url":"https://pith.science/pith/PL76QISYI5NJMXB23ND64VBPJT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PL76QISYI5NJMXB23ND64VBPJT/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":"2026-05-29T22:48:20Z","links":{"resolver":"https://pith.science/pith/PL76QISYI5NJMXB23ND64VBPJT","bundle":"https://pith.science/pith/PL76QISYI5NJMXB23ND64VBPJT/bundle.json","state":"https://pith.science/pith/PL76QISYI5NJMXB23ND64VBPJT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PL76QISYI5NJMXB23ND64VBPJT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PL76QISYI5NJMXB23ND64VBPJT","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":"5a5a8cd7580e6004f4f7b2a5b4fc8db87b298af1545583b49d812a11582bfcc7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-02-26T12:49:35Z","title_canon_sha256":"cddcba4a7c157c41ebca9c1e28cc1514de673a90ccf3aa6078b9dbde37f2ddbb"},"schema_version":"1.0","source":{"id":"1702.08027","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.08027","created_at":"2026-05-18T00:43:45Z"},{"alias_kind":"arxiv_version","alias_value":"1702.08027v2","created_at":"2026-05-18T00:43:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.08027","created_at":"2026-05-18T00:43:45Z"},{"alias_kind":"pith_short_12","alias_value":"PL76QISYI5NJ","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PL76QISYI5NJMXB2","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PL76QISY","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:79c18d6d9550379e39e229e8d3bfdff40a151436f36df8025d32f68b1c0347a3","target":"graph","created_at":"2026-05-18T00:43:45Z","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":"In this work, I improve on and extend to low and high $Q^2$ values the extractions of the $\\varepsilon$ dependence of the real parts of the two-photon exchange (TPE) amplitudes relative to the magnetic form factor, as well as the ratio $P_l/P_l^{Born} (\\varepsilon,Q^2)$ by using world data on $\\sigma_R(\\varepsilon,Q^2)$ with an emphasis on precise new data covering the low-momentum region which is sensitive to the large-scale structure of the nucleon. I provide simple parametrizations of the TPE amplitudes, along with an estimate of the fit uncertainties. The extracted TPE amplitudes are compa","authors_text":"I. A. Qattan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-02-26T12:49:35Z","title":"Phenomenological extraction of two-photon exchange amplitudes from elastic electron-proton scattering cross section data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.08027","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":"sha256:18b1342d2d24793071d668330e63765fa4c457203f7dd414f99ec12a6cf3c985","target":"record","created_at":"2026-05-18T00:43:45Z","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":"5a5a8cd7580e6004f4f7b2a5b4fc8db87b298af1545583b49d812a11582bfcc7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-02-26T12:49:35Z","title_canon_sha256":"cddcba4a7c157c41ebca9c1e28cc1514de673a90ccf3aa6078b9dbde37f2ddbb"},"schema_version":"1.0","source":{"id":"1702.08027","kind":"arxiv","version":2}},"canonical_sha256":"7affe82258475a965c3adb47ee542f4cdb2d071b648aa9701f72a59808987cb1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7affe82258475a965c3adb47ee542f4cdb2d071b648aa9701f72a59808987cb1","first_computed_at":"2026-05-18T00:43:45.001408Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:45.001408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eELfXvmOSpx5ld7qktCszZ78aZcC9IhqLK6IABAyWkB6om/yYm6lOOVOlV12hLNRfWtwJFhsG9Ax/MlrrBn4DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:45.002151Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.08027","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:18b1342d2d24793071d668330e63765fa4c457203f7dd414f99ec12a6cf3c985","sha256:79c18d6d9550379e39e229e8d3bfdff40a151436f36df8025d32f68b1c0347a3"],"state_sha256":"12d79bf6dfe0c4d0834262982f0e663673a10a041b34a6334ebd6ac22059a3f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G6KiZN6h4B1i58Pukp3NFjn3L/pQ0XOeVeP+i6Eq7L96ivQAvEaLRbfY+8/rOJtd8Rsw/baoj3P362wxUTibBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:48:20.780786Z","bundle_sha256":"ebb499faa0a25524bd0ae3df8ab70c8c1c850a6d43d776c6cad189b0cdae52a7"}}