{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:37PW7S47ABWZ42TAOTCBLFDHFW","short_pith_number":"pith:37PW7S47","canonical_record":{"source":{"id":"1109.0722","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-09-04T15:20:45Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"ec4c43604b1340fa71ac05a2e87f9dd44eb842620960b585912f57a47f3ff77b","abstract_canon_sha256":"990c74389568c99fe5b01587a947a0f03813cab379036c47578501d51e1177af"},"schema_version":"1.0"},"canonical_sha256":"dfdf6fcb9f006d9e6a6074c41594672da81e9bbb7df5b58929abb91f3ce52aa7","source":{"kind":"arxiv","id":"1109.0722","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0722","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0722v1","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0722","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"pith_short_12","alias_value":"37PW7S47ABWZ","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"37PW7S47ABWZ42TA","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"37PW7S47","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:37PW7S47ABWZ42TAOTCBLFDHFW","target":"record","payload":{"canonical_record":{"source":{"id":"1109.0722","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-09-04T15:20:45Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"ec4c43604b1340fa71ac05a2e87f9dd44eb842620960b585912f57a47f3ff77b","abstract_canon_sha256":"990c74389568c99fe5b01587a947a0f03813cab379036c47578501d51e1177af"},"schema_version":"1.0"},"canonical_sha256":"dfdf6fcb9f006d9e6a6074c41594672da81e9bbb7df5b58929abb91f3ce52aa7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:23:21.413005Z","signature_b64":"dzDyjTAEYJPkzq4rRak4F6gE13Uu9g7CtfgT9BIG6SH0wydbIiAGEftbFPREbQslMm1ZqBRaMTbE1t9lGeEIAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfdf6fcb9f006d9e6a6074c41594672da81e9bbb7df5b58929abb91f3ce52aa7","last_reissued_at":"2026-05-18T03:23:21.412402Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:23:21.412402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.0722","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":"2026-05-18T03:23:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k4iSdPbo7FuF8t0scrDJgnGaFv9wcuxsdNxcAuvyUecXnI3XEprK3dKji2WMn7j8WERJR0ykPO198iuT2MNFBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T07:44:23.269104Z"},"content_sha256":"a66e6c7a8493cf8ec3e3f5738681503b67277c313923a41c89943010fa12d705","schema_version":"1.0","event_id":"sha256:a66e6c7a8493cf8ec3e3f5738681503b67277c313923a41c89943010fa12d705"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:37PW7S47ABWZ42TAOTCBLFDHFW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Updated SAID analysis of pion photoproduction data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"hep-ph","authors_text":"Igor I. Strakovsky (GWU), Mark W. Paris, Ron L. Workman, William J. Briscoe","submitted_at":"2011-09-04T15:20:45Z","abstract_excerpt":"Energy-dependent and single-energy fits to the existing pion photoproduction database have been updated to cover the region from threshold to 2.7 GeV in the laboratory photon energy. Revised resonance photo-decay couplings have been extracted and compared to previous determinations. The influence of recent measurements is displayed. Remaining problems and future approaches are discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0722","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":""},"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":"2026-05-18T03:23:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UFpYWYxusO/VGA50zoXdsr2sN4qunt+Ym3H8lAaf7B+QAy1uFw3yCAlBxujwbdz5yNM5FT4xZh+TrsmqBkquDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T07:44:23.269464Z"},"content_sha256":"a68310afb5f059f3aea3c3ef04791e2d582786d08b70d619f0b50ababe538229","schema_version":"1.0","event_id":"sha256:a68310afb5f059f3aea3c3ef04791e2d582786d08b70d619f0b50ababe538229"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/37PW7S47ABWZ42TAOTCBLFDHFW/bundle.json","state_url":"https://pith.science/pith/37PW7S47ABWZ42TAOTCBLFDHFW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/37PW7S47ABWZ42TAOTCBLFDHFW/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":"2026-06-24T07:44:23Z","links":{"resolver":"https://pith.science/pith/37PW7S47ABWZ42TAOTCBLFDHFW","bundle":"https://pith.science/pith/37PW7S47ABWZ42TAOTCBLFDHFW/bundle.json","state":"https://pith.science/pith/37PW7S47ABWZ42TAOTCBLFDHFW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/37PW7S47ABWZ42TAOTCBLFDHFW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:37PW7S47ABWZ42TAOTCBLFDHFW","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":"990c74389568c99fe5b01587a947a0f03813cab379036c47578501d51e1177af","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-09-04T15:20:45Z","title_canon_sha256":"ec4c43604b1340fa71ac05a2e87f9dd44eb842620960b585912f57a47f3ff77b"},"schema_version":"1.0","source":{"id":"1109.0722","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0722","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0722v1","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0722","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"pith_short_12","alias_value":"37PW7S47ABWZ","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"37PW7S47ABWZ42TA","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"37PW7S47","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:a68310afb5f059f3aea3c3ef04791e2d582786d08b70d619f0b50ababe538229","target":"graph","created_at":"2026-05-18T03:23:21Z","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":"Energy-dependent and single-energy fits to the existing pion photoproduction database have been updated to cover the region from threshold to 2.7 GeV in the laboratory photon energy. Revised resonance photo-decay couplings have been extracted and compared to previous determinations. The influence of recent measurements is displayed. Remaining problems and future approaches are discussed.","authors_text":"Igor I. Strakovsky (GWU), Mark W. Paris, Ron L. Workman, William J. Briscoe","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-09-04T15:20:45Z","title":"Updated SAID analysis of pion photoproduction data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0722","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:a66e6c7a8493cf8ec3e3f5738681503b67277c313923a41c89943010fa12d705","target":"record","created_at":"2026-05-18T03:23:21Z","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":"990c74389568c99fe5b01587a947a0f03813cab379036c47578501d51e1177af","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-09-04T15:20:45Z","title_canon_sha256":"ec4c43604b1340fa71ac05a2e87f9dd44eb842620960b585912f57a47f3ff77b"},"schema_version":"1.0","source":{"id":"1109.0722","kind":"arxiv","version":1}},"canonical_sha256":"dfdf6fcb9f006d9e6a6074c41594672da81e9bbb7df5b58929abb91f3ce52aa7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfdf6fcb9f006d9e6a6074c41594672da81e9bbb7df5b58929abb91f3ce52aa7","first_computed_at":"2026-05-18T03:23:21.412402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:23:21.412402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dzDyjTAEYJPkzq4rRak4F6gE13Uu9g7CtfgT9BIG6SH0wydbIiAGEftbFPREbQslMm1ZqBRaMTbE1t9lGeEIAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:23:21.413005Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.0722","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a66e6c7a8493cf8ec3e3f5738681503b67277c313923a41c89943010fa12d705","sha256:a68310afb5f059f3aea3c3ef04791e2d582786d08b70d619f0b50ababe538229"],"state_sha256":"d43e4a9ac16b270ec33e8244a0391d652322b40e1b568a5b9c76c1786a384954"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a4lKmOCKw4IjF8PZo+Sb0/XWL36oDRQtMcOtdhKEMabaMasYqZ8SsS61f2QdhkZ7LnzWxgjLxvbO0ebTSaZODQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T07:44:23.271400Z","bundle_sha256":"a4934cf0bfef98c92b8f29fe52d192b38a37c3facc172560d7cca986e0e4edf1"}}