{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:BUS4SPJNSSR2Y6KRE4K3I4I5U4","short_pith_number":"pith:BUS4SPJN","canonical_record":{"source":{"id":"1004.0455","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-04-03T16:28:08Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"a8c1f4ccc83a00762a6cff0d9394a420da0673c54b4f91dfa27f8b4996cd3c50","abstract_canon_sha256":"131287d286d1208bdf6712493b3c45c1c648b6bb6a792b6884465b0f3e07eadf"},"schema_version":"1.0"},"canonical_sha256":"0d25c93d2d94a3ac79512715b4711da723d6c8676d3314916ada0b4e9cfcf72d","source":{"kind":"arxiv","id":"1004.0455","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.0455","created_at":"2026-05-18T02:33:39Z"},{"alias_kind":"arxiv_version","alias_value":"1004.0455v2","created_at":"2026-05-18T02:33:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.0455","created_at":"2026-05-18T02:33:39Z"},{"alias_kind":"pith_short_12","alias_value":"BUS4SPJNSSR2","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"BUS4SPJNSSR2Y6KR","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"BUS4SPJN","created_at":"2026-05-18T12:26:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:BUS4SPJNSSR2Y6KRE4K3I4I5U4","target":"record","payload":{"canonical_record":{"source":{"id":"1004.0455","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-04-03T16:28:08Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"a8c1f4ccc83a00762a6cff0d9394a420da0673c54b4f91dfa27f8b4996cd3c50","abstract_canon_sha256":"131287d286d1208bdf6712493b3c45c1c648b6bb6a792b6884465b0f3e07eadf"},"schema_version":"1.0"},"canonical_sha256":"0d25c93d2d94a3ac79512715b4711da723d6c8676d3314916ada0b4e9cfcf72d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:33:39.746869Z","signature_b64":"htgBM7E36BfHkuW3MSrLF/2wHhyJ1am8pt7WBcqetZ+JlKFEJ5+YXI5sjcP48zO4p1d2fC+yaWgcq+F2mAjwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0d25c93d2d94a3ac79512715b4711da723d6c8676d3314916ada0b4e9cfcf72d","last_reissued_at":"2026-05-18T02:33:39.746448Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:33:39.746448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.0455","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":"2026-05-18T02:33:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4K67+QI3he7F/OrMM9J7FVZZkFVpWXJXaUlBWx2R6MqJYdBG21+8TM+hHjy1c0Ntdzl4JmoPIkRHdC/cMOMwBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T08:34:03.378736Z"},"content_sha256":"b60fffcc6a63f7df7d32113388966fc8b2f3dc6280f8b61f749a647b82c144ce","schema_version":"1.0","event_id":"sha256:b60fffcc6a63f7df7d32113388966fc8b2f3dc6280f8b61f749a647b82c144ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:BUS4SPJNSSR2Y6KRE4K3I4I5U4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Toward a unified description of hadro- and photoproduction: S-wave pi- and eta-photoproduction amplitudes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Mark W. Paris, Ron L. Workman","submitted_at":"2010-04-03T16:28:08Z","abstract_excerpt":"The Chew-Mandelstam parameterization, which has been used extensively in the two-body hadronic sector, is generalized in this exploratory study to the electromagnetic sector by simultaneous fits to the pion- and eta-photoproduction S-wave multipole amplitudes for center-of-mass energies from the pion threshold through 1.61 GeV. We review the Chew-Mandelstam parameterization in detail to clarify the theoretical content of the SAID hadronic amplitude analysis and to place the proposed, generalized SAID electromagnetic amplitudes in the context of earlier employed parameterized forms. The paramet"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.0455","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":"2026-05-18T02:33:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IpWz8GwG/RF+oRV3x3T671iLm8QeIMchDGxG655sxTJQYZyslF8LLM1UOvpAG+boOsK1oSP5Eye6mWT/p0OsCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T08:34:03.379076Z"},"content_sha256":"e580cc336a3a0695719d49e71e761c7f33b835a67263dd37ac27ace472b5966d","schema_version":"1.0","event_id":"sha256:e580cc336a3a0695719d49e71e761c7f33b835a67263dd37ac27ace472b5966d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4/bundle.json","state_url":"https://pith.science/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4/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":"2026-06-24T08:34:03Z","links":{"resolver":"https://pith.science/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4","bundle":"https://pith.science/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4/bundle.json","state":"https://pith.science/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BUS4SPJNSSR2Y6KRE4K3I4I5U4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:BUS4SPJNSSR2Y6KRE4K3I4I5U4","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":"131287d286d1208bdf6712493b3c45c1c648b6bb6a792b6884465b0f3e07eadf","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-04-03T16:28:08Z","title_canon_sha256":"a8c1f4ccc83a00762a6cff0d9394a420da0673c54b4f91dfa27f8b4996cd3c50"},"schema_version":"1.0","source":{"id":"1004.0455","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.0455","created_at":"2026-05-18T02:33:39Z"},{"alias_kind":"arxiv_version","alias_value":"1004.0455v2","created_at":"2026-05-18T02:33:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.0455","created_at":"2026-05-18T02:33:39Z"},{"alias_kind":"pith_short_12","alias_value":"BUS4SPJNSSR2","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"BUS4SPJNSSR2Y6KR","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"BUS4SPJN","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:e580cc336a3a0695719d49e71e761c7f33b835a67263dd37ac27ace472b5966d","target":"graph","created_at":"2026-05-18T02:33:39Z","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":"The Chew-Mandelstam parameterization, which has been used extensively in the two-body hadronic sector, is generalized in this exploratory study to the electromagnetic sector by simultaneous fits to the pion- and eta-photoproduction S-wave multipole amplitudes for center-of-mass energies from the pion threshold through 1.61 GeV. We review the Chew-Mandelstam parameterization in detail to clarify the theoretical content of the SAID hadronic amplitude analysis and to place the proposed, generalized SAID electromagnetic amplitudes in the context of earlier employed parameterized forms. The paramet","authors_text":"Mark W. Paris, Ron L. Workman","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-04-03T16:28:08Z","title":"Toward a unified description of hadro- and photoproduction: S-wave pi- and eta-photoproduction amplitudes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.0455","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:b60fffcc6a63f7df7d32113388966fc8b2f3dc6280f8b61f749a647b82c144ce","target":"record","created_at":"2026-05-18T02:33:39Z","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":"131287d286d1208bdf6712493b3c45c1c648b6bb6a792b6884465b0f3e07eadf","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-04-03T16:28:08Z","title_canon_sha256":"a8c1f4ccc83a00762a6cff0d9394a420da0673c54b4f91dfa27f8b4996cd3c50"},"schema_version":"1.0","source":{"id":"1004.0455","kind":"arxiv","version":2}},"canonical_sha256":"0d25c93d2d94a3ac79512715b4711da723d6c8676d3314916ada0b4e9cfcf72d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d25c93d2d94a3ac79512715b4711da723d6c8676d3314916ada0b4e9cfcf72d","first_computed_at":"2026-05-18T02:33:39.746448Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:33:39.746448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"htgBM7E36BfHkuW3MSrLF/2wHhyJ1am8pt7WBcqetZ+JlKFEJ5+YXI5sjcP48zO4p1d2fC+yaWgcq+F2mAjwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:33:39.746869Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.0455","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b60fffcc6a63f7df7d32113388966fc8b2f3dc6280f8b61f749a647b82c144ce","sha256:e580cc336a3a0695719d49e71e761c7f33b835a67263dd37ac27ace472b5966d"],"state_sha256":"aa4a87cbcd008f24df4228aaca10530e3b1809d7fd3b9dfb4e7efb30c4b76046"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c3s8SGA33T6OHl9dgpgZCU9JCXdh8K+PlJQTHAb3J1nMRZQlFn8EI4InX6k78M2uldxWL6ElkPFb+rnIL+T3Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T08:34:03.380896Z","bundle_sha256":"87b94a2463c1f70cb5892b3c342f45e2284216a87d5b2db75f3dec709acb32aa"}}