{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QHIB7NLFOZVBZZ2JWADQ3NBJS7","short_pith_number":"pith:QHIB7NLF","canonical_record":{"source":{"id":"1510.01488","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T09:07:16Z","cross_cats_sorted":[],"title_canon_sha256":"4385d5ef515ad91383f8c7ea346429ae2a0feeb60ce0f83c1cf7bc9b92c79760","abstract_canon_sha256":"94d5877176319f51ab0f46da4a1ce937a87ae60992ea3292290d527f38ec6e94"},"schema_version":"1.0"},"canonical_sha256":"81d01fb565766a1ce749b0070db42997fd1745cdfb10a75a8e3a86addce5ee9b","source":{"kind":"arxiv","id":"1510.01488","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01488","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01488v1","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01488","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"pith_short_12","alias_value":"QHIB7NLFOZVB","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"pith_short_16","alias_value":"QHIB7NLFOZVBZZ2J","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"pith_short_8","alias_value":"QHIB7NLF","created_at":"2026-07-05T01:45:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QHIB7NLFOZVBZZ2JWADQ3NBJS7","target":"record","payload":{"canonical_record":{"source":{"id":"1510.01488","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T09:07:16Z","cross_cats_sorted":[],"title_canon_sha256":"4385d5ef515ad91383f8c7ea346429ae2a0feeb60ce0f83c1cf7bc9b92c79760","abstract_canon_sha256":"94d5877176319f51ab0f46da4a1ce937a87ae60992ea3292290d527f38ec6e94"},"schema_version":"1.0"},"canonical_sha256":"81d01fb565766a1ce749b0070db42997fd1745cdfb10a75a8e3a86addce5ee9b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:45:18.346680Z","signature_b64":"aAkWd+g8r6Asu8wqofsDW4GZBi22WRq/QlP/Y2ICAh1U5ok7qK9rgYQhcdY2q8OtPGbQE/xcUT5j4YX1s4dDDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81d01fb565766a1ce749b0070db42997fd1745cdfb10a75a8e3a86addce5ee9b","last_reissued_at":"2026-07-05T01:45:18.346195Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:45:18.346195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.01488","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":"2026-07-05T01:45:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZeyRpCFK/+rmSDjMOhGBKAa1FbjJ3aySNVdgcnQgNteKtkWv2oB1/g1dfbSsVJk4S3N8SqdJhz6Dm8j0sLFJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T08:47:40.290730Z"},"content_sha256":"1be990cfdfb0a176eceb0b929b291835f6366efe0e0c31a9711c1130453368f0","schema_version":"1.0","event_id":"sha256:1be990cfdfb0a176eceb0b929b291835f6366efe0e0c31a9711c1130453368f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QHIB7NLFOZVBZZ2JWADQ3NBJS7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strangeness Photoproduction at the BGO-OD Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Bella, A. Braghieri, A. Fantini, A. Gridnev, A. Ignatov, A. Lapik, A. Mushkarenkov, A. Stugelev, B. Krusche, B. Reitz, D. Bayadilov, D. Elsner, D. Hammann, D. Moricciani, D. Novinskiy, D. Walther, D. Watts, E. Gutz, F. Curciarello, F. Frommberger, F. Ghio, F. Klein, F. Messi, G. Gervino, G. Giardina, G. Mandaglio, G. Scheluchin, H. Dutz, H. Schmieden, H. Zaunick, I. V. Lopatin, J. Hannappel, K. Brinkmann, K. Koop, M. Becker, M. Nanova, M. Romaniuk, N. Rudnev, O. Freyermuth, P. Bielefeldt, P. Cole, P. Hartmann, P. Levi Sandri, P. Pedroni, R. Beck, R. Di Salvo, R. Jahn, R. Joosten, R. Messi, S. Alef, S. Boese, S. Friedrich, S. Goertz, T. C. Jude, T. Rostomyan, T. Zimmermann, V. De Leo, V. Ganenko, V. Metag, V. Nedorezov, V. Sumachev, V. Tarakanov, V. Vegna, W. Hillert","submitted_at":"2015-10-06T09:07:16Z","abstract_excerpt":"BGO-OD is a newly commissioned experiment to investigate the internal structure of the nucleon, using an energy tagged bremsstrahlung photon beam at the ELSA electron facility. The setup consists of a highly segmented BGO calorimeter surrounding the target, with a particle tracking magnetic spectrometer at forward angles. BGO-OD is ideal for investigating meson photoproduction. The extensive physics programme for open strangeness photoproduction is introduced, and preliminary analysis presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01488","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1510.01488/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":"2026-07-05T01:45:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hCRnmbrWvQCRLPwKk0iUPgOeVfC/l0wKpAM8KN5Ii6hPgf7JE3PiTFOcdb1lZS4gqw5NySzBIOFcu/pXiaEaBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T08:47:40.291120Z"},"content_sha256":"3b129d36c2ebed1d926e3918dfb7a0ce6045de28eb80b451708c08fb6d74a96a","schema_version":"1.0","event_id":"sha256:3b129d36c2ebed1d926e3918dfb7a0ce6045de28eb80b451708c08fb6d74a96a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7/bundle.json","state_url":"https://pith.science/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7/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":"2026-07-11T08:47:40Z","links":{"resolver":"https://pith.science/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7","bundle":"https://pith.science/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7/bundle.json","state":"https://pith.science/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QHIB7NLFOZVBZZ2JWADQ3NBJS7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QHIB7NLFOZVBZZ2JWADQ3NBJS7","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":"94d5877176319f51ab0f46da4a1ce937a87ae60992ea3292290d527f38ec6e94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T09:07:16Z","title_canon_sha256":"4385d5ef515ad91383f8c7ea346429ae2a0feeb60ce0f83c1cf7bc9b92c79760"},"schema_version":"1.0","source":{"id":"1510.01488","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01488","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01488v1","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01488","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"pith_short_12","alias_value":"QHIB7NLFOZVB","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"pith_short_16","alias_value":"QHIB7NLFOZVBZZ2J","created_at":"2026-07-05T01:45:18Z"},{"alias_kind":"pith_short_8","alias_value":"QHIB7NLF","created_at":"2026-07-05T01:45:18Z"}],"graph_snapshots":[{"event_id":"sha256:3b129d36c2ebed1d926e3918dfb7a0ce6045de28eb80b451708c08fb6d74a96a","target":"graph","created_at":"2026-07-05T01:45:18Z","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/1510.01488/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"BGO-OD is a newly commissioned experiment to investigate the internal structure of the nucleon, using an energy tagged bremsstrahlung photon beam at the ELSA electron facility. The setup consists of a highly segmented BGO calorimeter surrounding the target, with a particle tracking magnetic spectrometer at forward angles. BGO-OD is ideal for investigating meson photoproduction. The extensive physics programme for open strangeness photoproduction is introduced, and preliminary analysis presented.","authors_text":"A. Bella, A. Braghieri, A. Fantini, A. Gridnev, A. Ignatov, A. Lapik, A. Mushkarenkov, A. Stugelev, B. Krusche, B. Reitz, D. Bayadilov, D. Elsner, D. Hammann, D. Moricciani, D. Novinskiy, D. Walther, D. Watts, E. Gutz, F. Curciarello, F. Frommberger, F. Ghio, F. Klein, F. Messi, G. Gervino, G. Giardina, G. Mandaglio, G. Scheluchin, H. Dutz, H. Schmieden, H. Zaunick, I. V. Lopatin, J. Hannappel, K. Brinkmann, K. Koop, M. Becker, M. Nanova, M. Romaniuk, N. Rudnev, O. Freyermuth, P. Bielefeldt, P. Cole, P. Hartmann, P. Levi Sandri, P. Pedroni, R. Beck, R. Di Salvo, R. Jahn, R. Joosten, R. Messi, S. Alef, S. Boese, S. Friedrich, S. Goertz, T. C. Jude, T. Rostomyan, T. Zimmermann, V. De Leo, V. Ganenko, V. Metag, V. Nedorezov, V. Sumachev, V. Tarakanov, V. Vegna, W. Hillert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T09:07:16Z","title":"Strangeness Photoproduction at the BGO-OD Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01488","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":"sha256:1be990cfdfb0a176eceb0b929b291835f6366efe0e0c31a9711c1130453368f0","target":"record","created_at":"2026-07-05T01:45:18Z","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":"94d5877176319f51ab0f46da4a1ce937a87ae60992ea3292290d527f38ec6e94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-10-06T09:07:16Z","title_canon_sha256":"4385d5ef515ad91383f8c7ea346429ae2a0feeb60ce0f83c1cf7bc9b92c79760"},"schema_version":"1.0","source":{"id":"1510.01488","kind":"arxiv","version":1}},"canonical_sha256":"81d01fb565766a1ce749b0070db42997fd1745cdfb10a75a8e3a86addce5ee9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81d01fb565766a1ce749b0070db42997fd1745cdfb10a75a8e3a86addce5ee9b","first_computed_at":"2026-07-05T01:45:18.346195Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:45:18.346195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aAkWd+g8r6Asu8wqofsDW4GZBi22WRq/QlP/Y2ICAh1U5ok7qK9rgYQhcdY2q8OtPGbQE/xcUT5j4YX1s4dDDA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:45:18.346680Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.01488","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1be990cfdfb0a176eceb0b929b291835f6366efe0e0c31a9711c1130453368f0","sha256:3b129d36c2ebed1d926e3918dfb7a0ce6045de28eb80b451708c08fb6d74a96a"],"state_sha256":"2a7a671f66da0a2d29f58821f3375753c5d92c9b7d434d3a1182905a75604661"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"18hChbiO1K6Olvg+Ps9KjKlIlYgNkijEk1kpQXCejaeqBcSNFtmaytgSBQUUO5q5sa9BorGtXwRqcrNIbTdsBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T08:47:40.293236Z","bundle_sha256":"4c8265aa6e6005eedd3801ab9bc4e23064166e51899270fd25726c77b4cf065b"}}