{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:UA6OHB7UMMWCXVGTROYGMXBOGU","short_pith_number":"pith:UA6OHB7U","canonical_record":{"source":{"id":"1704.00634","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-04-03T15:13:40Z","cross_cats_sorted":[],"title_canon_sha256":"2b3ad613aaea06ff39480dbe3ead10540536f5ff0a9cb48e28d725ffe826bb50","abstract_canon_sha256":"234c8d3531d9eeb5fa7c1210b447ff13de8ce5870e567f4e49a91053d1139930"},"schema_version":"1.0"},"canonical_sha256":"a03ce387f4632c2bd4d38bb0665c2e3528addd0d0830ae3bb9d0a9778483a25c","source":{"kind":"arxiv","id":"1704.00634","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00634","created_at":"2026-05-18T00:46:34Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00634v1","created_at":"2026-05-18T00:46:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00634","created_at":"2026-05-18T00:46:34Z"},{"alias_kind":"pith_short_12","alias_value":"UA6OHB7UMMWC","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UA6OHB7UMMWCXVGT","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UA6OHB7U","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:UA6OHB7UMMWCXVGTROYGMXBOGU","target":"record","payload":{"canonical_record":{"source":{"id":"1704.00634","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-04-03T15:13:40Z","cross_cats_sorted":[],"title_canon_sha256":"2b3ad613aaea06ff39480dbe3ead10540536f5ff0a9cb48e28d725ffe826bb50","abstract_canon_sha256":"234c8d3531d9eeb5fa7c1210b447ff13de8ce5870e567f4e49a91053d1139930"},"schema_version":"1.0"},"canonical_sha256":"a03ce387f4632c2bd4d38bb0665c2e3528addd0d0830ae3bb9d0a9778483a25c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:34.279033Z","signature_b64":"W42WJPag2DTPOQnzwBNNY4Ewg3e3RZaXhVLiauvoxds4unSRp84px91ZqYAJRaGFDTls2gsjDeRh3FVvgbzrAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a03ce387f4632c2bd4d38bb0665c2e3528addd0d0830ae3bb9d0a9778483a25c","last_reissued_at":"2026-05-18T00:46:34.278352Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:34.278352Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.00634","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":"2026-05-18T00:46:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FnkJzEZXV5I6Yx8NHoH58m9h07o0hfpPAiZWUe1I7kBxZ//ZJpl32GgZlSA1JeyXaeh7tnAWXl/Ubt4YYfDIAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:32:58.117127Z"},"content_sha256":"41961e80b138b5b139f4249dd4117299224988a18d455faf9332829755c15993","schema_version":"1.0","event_id":"sha256:41961e80b138b5b139f4249dd4117299224988a18d455faf9332829755c15993"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:UA6OHB7UMMWCXVGTROYGMXBOGU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Gridnev, A. K\\\"aser, A. Sarantsev, A. Thiel, A.V. Anisovich, A. Wilson, A. Winnebeck, B. Bantes, B. Krusche, Ch. Funke, Ch. Hammann, Ch. Honisch, Ch. Schmidt, Ch. Wendel, D. Bayadilov, D. Elsner, D. Hammann, D. Kaiser, D. Piontek, D. Walther, D. Werthm\\\"uller, E. Gutz{\\i}nst, F. Afzal, F. Frommberger, F. Kalischewski, F. Klein, G. Reicherz, H. Dutz, H. Eberhardt, H. Kalinowsky, H. Schmieden, H. van Pee, I. Keshelashvili, I. Lopatin, J. Hannappel, J. Hartmann, J. M\\\"uller, J. M\\\"ullers, K. Fornet-Ponse, K. Koop, K. Makonyi, K. Spieker, K.-T. Brinkmann, L. Witthauer, M. Bichow, M. Dieterle, M. Gottschall, M. Gr\\\"uner, M. Lang, M. Nanova, M. Urban, N.K. Walford, Ph. Hoffmeister, Ph. Mahlberg, P. Klassen, R. Beck, R. Ewald, S. B\\\"ose, S. Kammer, St. Friedrich, St. Goertz, Th. Challand, T. Jude, T. Rostomyan, T. Seifen, U. Thoma, V. Crede, V. Kleber, V. Metag, V. Nikonov, V. Sokhoyan, W. Hillert, W. Meyer","submitted_at":"2017-04-03T15:13:40Z","abstract_excerpt":"Photoproduction of $\\eta$ mesons from neutrons} \\abstract{Results from measurements of the photoproduction of $\\eta$ mesons from quasifree protons and neutrons are summarized. The experiments were performed with the CBELSA/TAPS detector at the electron accelerator ELSA in Bonn using the $\\eta\\to3\\pi^{0}\\to6\\gamma$ decay. A liquid deuterium target was used for the measurement of total cross sections and angular distributions. The results confirm earlier measurements from Bonn and the MAMI facility in Mainz about the existence of a narrow structure in the excitation function of $\\gamma n\\rightar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00634","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":"2026-05-18T00:46:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b7+M6KcsJCWBY+Zp0usH0wkJBYFwmJPEo5LrZXzz1IvPJPP/X70qTJHKBPAi3WOmyIUcm8mO3QYEeTu+BAVgAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:32:58.117610Z"},"content_sha256":"7212d6ec203129b66b330586ccaff6614a806320125878614e4051b6e9377b03","schema_version":"1.0","event_id":"sha256:7212d6ec203129b66b330586ccaff6614a806320125878614e4051b6e9377b03"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UA6OHB7UMMWCXVGTROYGMXBOGU/bundle.json","state_url":"https://pith.science/pith/UA6OHB7UMMWCXVGTROYGMXBOGU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UA6OHB7UMMWCXVGTROYGMXBOGU/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":"2026-08-05T13:32:58Z","links":{"resolver":"https://pith.science/pith/UA6OHB7UMMWCXVGTROYGMXBOGU","bundle":"https://pith.science/pith/UA6OHB7UMMWCXVGTROYGMXBOGU/bundle.json","state":"https://pith.science/pith/UA6OHB7UMMWCXVGTROYGMXBOGU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UA6OHB7UMMWCXVGTROYGMXBOGU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:UA6OHB7UMMWCXVGTROYGMXBOGU","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":"234c8d3531d9eeb5fa7c1210b447ff13de8ce5870e567f4e49a91053d1139930","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-04-03T15:13:40Z","title_canon_sha256":"2b3ad613aaea06ff39480dbe3ead10540536f5ff0a9cb48e28d725ffe826bb50"},"schema_version":"1.0","source":{"id":"1704.00634","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00634","created_at":"2026-05-18T00:46:34Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00634v1","created_at":"2026-05-18T00:46:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00634","created_at":"2026-05-18T00:46:34Z"},{"alias_kind":"pith_short_12","alias_value":"UA6OHB7UMMWC","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UA6OHB7UMMWCXVGT","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UA6OHB7U","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:7212d6ec203129b66b330586ccaff6614a806320125878614e4051b6e9377b03","target":"graph","created_at":"2026-05-18T00:46:34Z","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":"Photoproduction of $\\eta$ mesons from neutrons} \\abstract{Results from measurements of the photoproduction of $\\eta$ mesons from quasifree protons and neutrons are summarized. The experiments were performed with the CBELSA/TAPS detector at the electron accelerator ELSA in Bonn using the $\\eta\\to3\\pi^{0}\\to6\\gamma$ decay. A liquid deuterium target was used for the measurement of total cross sections and angular distributions. The results confirm earlier measurements from Bonn and the MAMI facility in Mainz about the existence of a narrow structure in the excitation function of $\\gamma n\\rightar","authors_text":"A. Gridnev, A. K\\\"aser, A. Sarantsev, A. Thiel, A.V. Anisovich, A. Wilson, A. Winnebeck, B. Bantes, B. Krusche, Ch. Funke, Ch. Hammann, Ch. Honisch, Ch. Schmidt, Ch. Wendel, D. Bayadilov, D. Elsner, D. Hammann, D. Kaiser, D. Piontek, D. Walther, D. Werthm\\\"uller, E. Gutz{\\i}nst, F. Afzal, F. Frommberger, F. Kalischewski, F. Klein, G. Reicherz, H. Dutz, H. Eberhardt, H. Kalinowsky, H. Schmieden, H. van Pee, I. Keshelashvili, I. Lopatin, J. Hannappel, J. Hartmann, J. M\\\"uller, J. M\\\"ullers, K. Fornet-Ponse, K. Koop, K. Makonyi, K. Spieker, K.-T. Brinkmann, L. Witthauer, M. Bichow, M. Dieterle, M. Gottschall, M. Gr\\\"uner, M. Lang, M. Nanova, M. Urban, N.K. Walford, Ph. Hoffmeister, Ph. Mahlberg, P. Klassen, R. Beck, R. Ewald, S. B\\\"ose, S. Kammer, St. Friedrich, St. Goertz, Th. Challand, T. Jude, T. Rostomyan, T. Seifen, U. Thoma, V. Crede, V. Kleber, V. Metag, V. Nikonov, V. Sokhoyan, W. Hillert, W. Meyer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-04-03T15:13:40Z","title":"Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00634","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":"sha256:41961e80b138b5b139f4249dd4117299224988a18d455faf9332829755c15993","target":"record","created_at":"2026-05-18T00:46:34Z","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":"234c8d3531d9eeb5fa7c1210b447ff13de8ce5870e567f4e49a91053d1139930","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-04-03T15:13:40Z","title_canon_sha256":"2b3ad613aaea06ff39480dbe3ead10540536f5ff0a9cb48e28d725ffe826bb50"},"schema_version":"1.0","source":{"id":"1704.00634","kind":"arxiv","version":1}},"canonical_sha256":"a03ce387f4632c2bd4d38bb0665c2e3528addd0d0830ae3bb9d0a9778483a25c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a03ce387f4632c2bd4d38bb0665c2e3528addd0d0830ae3bb9d0a9778483a25c","first_computed_at":"2026-05-18T00:46:34.278352Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:34.278352Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W42WJPag2DTPOQnzwBNNY4Ewg3e3RZaXhVLiauvoxds4unSRp84px91ZqYAJRaGFDTls2gsjDeRh3FVvgbzrAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:34.279033Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.00634","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41961e80b138b5b139f4249dd4117299224988a18d455faf9332829755c15993","sha256:7212d6ec203129b66b330586ccaff6614a806320125878614e4051b6e9377b03"],"state_sha256":"3b20c93dfd67f560a62fcde78c64ae77b53fa6ed2f7ead510dd0ab011ba280bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/jMPsXXV/a0QPhPvoYYQXdkBCR4nL3l53kkP2J7C0UiUfzEmTmpz6dFweyn4aevyr9Faw8MD6jol1i9P99YFAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T13:32:58.123003Z","bundle_sha256":"a21430c290e0bf12ef0367104ecbb24ac30b6ea5ef95ed53a4aaec1706caf818"}}