{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:IWPWUZYEMGNMVER6WPKTPIAGV4","short_pith_number":"pith:IWPWUZYE","canonical_record":{"source":{"id":"nucl-th/9704064","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1997-04-30T09:03:14Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"bfed94cf45eee7d8b41677fc66422d9d4030943a9bd5f65e7f534056e74a2ed6","abstract_canon_sha256":"8d738b9ca2b49c37100a878e49551d6cb121dc4ee7fceb06ab4c6d4b425b09d9"},"schema_version":"1.0"},"canonical_sha256":"459f6a6704619aca923eb3d537a006af01dcfc99c174b2261dfbc6d203af4e8a","source":{"kind":"arxiv","id":"nucl-th/9704064","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9704064","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9704064v2","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9704064","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"pith_short_12","alias_value":"IWPWUZYEMGNM","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"pith_short_16","alias_value":"IWPWUZYEMGNMVER6","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"pith_short_8","alias_value":"IWPWUZYE","created_at":"2026-07-04T15:23:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:IWPWUZYEMGNMVER6WPKTPIAGV4","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/9704064","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1997-04-30T09:03:14Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"bfed94cf45eee7d8b41677fc66422d9d4030943a9bd5f65e7f534056e74a2ed6","abstract_canon_sha256":"8d738b9ca2b49c37100a878e49551d6cb121dc4ee7fceb06ab4c6d4b425b09d9"},"schema_version":"1.0"},"canonical_sha256":"459f6a6704619aca923eb3d537a006af01dcfc99c174b2261dfbc6d203af4e8a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:23:23.857182Z","signature_b64":"zIyM5ESBAVCf6jkyyqCQ6YDrXd9u36vmpYFF5lX65fCHmsb14MMuY8uYe4JNmpkUR47pVzVpw6xssyUiHAabDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"459f6a6704619aca923eb3d537a006af01dcfc99c174b2261dfbc6d203af4e8a","last_reissued_at":"2026-07-04T15:23:23.856731Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:23:23.856731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/9704064","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":"2026-07-04T15:23:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZnvX4avRVC7qvQFk1z4Pk7D7CRQNZd1YlUUvfHCkElq2OV/XGr/xeKXTZj2kzIOfI+zd+gTOdUZUsHRmcmjWBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T11:47:43.028505Z"},"content_sha256":"2d370d42c927f5fc749bbd36e5e5220c882bc30f62b538f95311d7aa6b5b4c0c","schema_version":"1.0","event_id":"sha256:2d370d42c927f5fc749bbd36e5e5220c882bc30f62b538f95311d7aa6b5b4c0c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:IWPWUZYEMGNMVER6WPKTPIAGV4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Structure analysis of the virtual Compton scattering amplitude at low energies","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-th","authors_text":"(2) Kernfysisch Versneller Instituut, 3), (3) National Science Center, A. Metz (1), A. Yu. Korchin (2, D. Drechsel (1), G. Knoechlein (1), Groningen, Kharkov), S. Scherer (1) ((1) Institut fuer Kernphysik, Univ. Mainz","submitted_at":"1997-04-30T09:03:14Z","abstract_excerpt":"We analyze virtual Compton scattering off the nucleon at low energies in a covariant, model-independent formalism.\n  We define a set of invariant functions which, once the irregular nucleon pole terms have been subtracted in a gauge-invariant fashion, is free of poles and kinematical zeros.\n  The covariant treatment naturally allows one to implement the constraints due to Lorentz and gauge invariance, crossing symmetry, and the discrete symmetries.\n  In particular, when applied to the $ep\\to e'p'\\gamma$ reaction, charge-conjugation symmetry in combination with nucleon crossing generates four r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9704064","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/nucl-th/9704064/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":"2026-07-04T15:23:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tCJgyqHWDXFTr6yYwkRvo28v0Ie88Do3psj1BqYkMZfV04g+8S//MFPIGlXJqmwk2Q+5+IMDK9uglrfR3aLVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T11:47:43.029049Z"},"content_sha256":"8a56d317b9c7d008d2f14d02b9560c2ce5ac5bc4252f61448f09305829f7420d","schema_version":"1.0","event_id":"sha256:8a56d317b9c7d008d2f14d02b9560c2ce5ac5bc4252f61448f09305829f7420d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IWPWUZYEMGNMVER6WPKTPIAGV4/bundle.json","state_url":"https://pith.science/pith/IWPWUZYEMGNMVER6WPKTPIAGV4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IWPWUZYEMGNMVER6WPKTPIAGV4/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":"2026-08-06T11:47:43Z","links":{"resolver":"https://pith.science/pith/IWPWUZYEMGNMVER6WPKTPIAGV4","bundle":"https://pith.science/pith/IWPWUZYEMGNMVER6WPKTPIAGV4/bundle.json","state":"https://pith.science/pith/IWPWUZYEMGNMVER6WPKTPIAGV4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IWPWUZYEMGNMVER6WPKTPIAGV4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:IWPWUZYEMGNMVER6WPKTPIAGV4","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":"8d738b9ca2b49c37100a878e49551d6cb121dc4ee7fceb06ab4c6d4b425b09d9","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"1997-04-30T09:03:14Z","title_canon_sha256":"bfed94cf45eee7d8b41677fc66422d9d4030943a9bd5f65e7f534056e74a2ed6"},"schema_version":"1.0","source":{"id":"nucl-th/9704064","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9704064","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9704064v2","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9704064","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"pith_short_12","alias_value":"IWPWUZYEMGNM","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"pith_short_16","alias_value":"IWPWUZYEMGNMVER6","created_at":"2026-07-04T15:23:23Z"},{"alias_kind":"pith_short_8","alias_value":"IWPWUZYE","created_at":"2026-07-04T15:23:23Z"}],"graph_snapshots":[{"event_id":"sha256:8a56d317b9c7d008d2f14d02b9560c2ce5ac5bc4252f61448f09305829f7420d","target":"graph","created_at":"2026-07-04T15:23:23Z","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/9704064/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze virtual Compton scattering off the nucleon at low energies in a covariant, model-independent formalism.\n  We define a set of invariant functions which, once the irregular nucleon pole terms have been subtracted in a gauge-invariant fashion, is free of poles and kinematical zeros.\n  The covariant treatment naturally allows one to implement the constraints due to Lorentz and gauge invariance, crossing symmetry, and the discrete symmetries.\n  In particular, when applied to the $ep\\to e'p'\\gamma$ reaction, charge-conjugation symmetry in combination with nucleon crossing generates four r","authors_text":"(2) Kernfysisch Versneller Instituut, 3), (3) National Science Center, A. Metz (1), A. Yu. Korchin (2, D. Drechsel (1), G. Knoechlein (1), Groningen, Kharkov), S. Scherer (1) ((1) Institut fuer Kernphysik, Univ. Mainz","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1997-04-30T09:03:14Z","title":"Structure analysis of the virtual Compton scattering amplitude at low energies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9704064","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":"sha256:2d370d42c927f5fc749bbd36e5e5220c882bc30f62b538f95311d7aa6b5b4c0c","target":"record","created_at":"2026-07-04T15:23:23Z","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":"8d738b9ca2b49c37100a878e49551d6cb121dc4ee7fceb06ab4c6d4b425b09d9","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"1997-04-30T09:03:14Z","title_canon_sha256":"bfed94cf45eee7d8b41677fc66422d9d4030943a9bd5f65e7f534056e74a2ed6"},"schema_version":"1.0","source":{"id":"nucl-th/9704064","kind":"arxiv","version":2}},"canonical_sha256":"459f6a6704619aca923eb3d537a006af01dcfc99c174b2261dfbc6d203af4e8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"459f6a6704619aca923eb3d537a006af01dcfc99c174b2261dfbc6d203af4e8a","first_computed_at":"2026-07-04T15:23:23.856731Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:23.856731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zIyM5ESBAVCf6jkyyqCQ6YDrXd9u36vmpYFF5lX65fCHmsb14MMuY8uYe4JNmpkUR47pVzVpw6xssyUiHAabDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:23.857182Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9704064","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d370d42c927f5fc749bbd36e5e5220c882bc30f62b538f95311d7aa6b5b4c0c","sha256:8a56d317b9c7d008d2f14d02b9560c2ce5ac5bc4252f61448f09305829f7420d"],"state_sha256":"3efbc0cdfc53d01eba12a3adaa7d757d21247e9b74439eec45e3b356e96a491e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"04N3XqQyMVeGwiFKZLDMEUzBPf+ZTwOf9ouhIdo/VtR2+pxK37dVuoH9PeGKoeMz1ans5oL41iSTQMOLpqh5Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T11:47:43.032648Z","bundle_sha256":"65a07d9e8173a4f973f5014ef7cd706235036f086208dc153d990caf4730fdd7"}}