{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PWWDZBF3V2CACQDTURAPVIEFZP","short_pith_number":"pith:PWWDZBF3","canonical_record":{"source":{"id":"1709.07449","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-09-21T15:37:02Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"15970390ddd518d10f876ec8f4325001fefe18d6c09430028897d8cf1f55746c","abstract_canon_sha256":"11fa47dc135bb6f9bcb797cdfbd7eeda75e90cac770f51a1bbb68b5f5c9e043a"},"schema_version":"1.0"},"canonical_sha256":"7dac3c84bbae84014073a440faa085cbc14034f48e4edaccfefb7f9e7a604c51","source":{"kind":"arxiv","id":"1709.07449","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.07449","created_at":"2026-05-18T00:19:26Z"},{"alias_kind":"arxiv_version","alias_value":"1709.07449v1","created_at":"2026-05-18T00:19:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.07449","created_at":"2026-05-18T00:19:26Z"},{"alias_kind":"pith_short_12","alias_value":"PWWDZBF3V2CA","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PWWDZBF3V2CACQDT","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PWWDZBF3","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PWWDZBF3V2CACQDTURAPVIEFZP","target":"record","payload":{"canonical_record":{"source":{"id":"1709.07449","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-09-21T15:37:02Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"15970390ddd518d10f876ec8f4325001fefe18d6c09430028897d8cf1f55746c","abstract_canon_sha256":"11fa47dc135bb6f9bcb797cdfbd7eeda75e90cac770f51a1bbb68b5f5c9e043a"},"schema_version":"1.0"},"canonical_sha256":"7dac3c84bbae84014073a440faa085cbc14034f48e4edaccfefb7f9e7a604c51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:26.713371Z","signature_b64":"LLDamRBjLjU5FjEQomGbuC61BmB9wXiuiR8fEeiZkgDcFhuyaOOwonk3SFZGSwJ5kouax8l6X6a6spfTKOq+DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7dac3c84bbae84014073a440faa085cbc14034f48e4edaccfefb7f9e7a604c51","last_reissued_at":"2026-05-18T00:19:26.712596Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:26.712596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.07449","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":"2026-05-18T00:19:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/DrDWLuDpwxF4XdMlSWt+TJM9F1ZIuBPa/epwovOSsdnHaW27NgoX0c3KvmqbQPLcBFkDcoVxAt6i25GASOzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:08:54.032236Z"},"content_sha256":"d4af8747ea2bd7fadc4238fff6b7ce646e3e55156b4e56f7909c923da1bd9c21","schema_version":"1.0","event_id":"sha256:d4af8747ea2bd7fadc4238fff6b7ce646e3e55156b4e56f7909c923da1bd9c21"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PWWDZBF3V2CACQDTURAPVIEFZP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The SPEDE spectrometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Illana, D.M. Cox, D.T. Joss, G.G. O'Neill, J. Konki, J. Ojala, J. Pakarinen, J. Thornhill, J. Tuunanen, K. Ranttila, L.P. Gaffney, M.J.G. Borge, N. Warr, P.A. Butler, P. Papadakis, P. Rahkila, P.T. Greenlees, P. Van Duppen, R.-D. Herzberg, R.D. Page, T. Kr\\\"oll","submitted_at":"2017-09-21T15:37:02Z","abstract_excerpt":"The electron spectrometer, SPEDE, has been developed and will be employed in conjunction with the Miniball spectrometer at the HIE-ISOLDE facility, CERN. SPEDE allows for direct measurement of internal conversion electrons emitted in-flight, without employing magnetic fields to transport or momentum filter the electrons. Together with the Miniball spectrometer, it enables simultaneous observation of {\\gamma} rays and conversion electrons in Coulomb-excitation experiments using radioactive ion beams."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.07449","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":"2026-05-18T00:19:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HYSz8t4mEFNC0n4YFcDQv2Lny8TcxTfhwnZG9IwqBzxrTjVqP/DpMYAJr1CwB6JIY+xiAyK1TKJl3ualGdqmDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:08:54.032955Z"},"content_sha256":"da1e68d31685f26f9e3ce04acdd67ffcaf59bfec83c9e47e78568418442e760a","schema_version":"1.0","event_id":"sha256:da1e68d31685f26f9e3ce04acdd67ffcaf59bfec83c9e47e78568418442e760a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PWWDZBF3V2CACQDTURAPVIEFZP/bundle.json","state_url":"https://pith.science/pith/PWWDZBF3V2CACQDTURAPVIEFZP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PWWDZBF3V2CACQDTURAPVIEFZP/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":"2026-05-25T23:08:54Z","links":{"resolver":"https://pith.science/pith/PWWDZBF3V2CACQDTURAPVIEFZP","bundle":"https://pith.science/pith/PWWDZBF3V2CACQDTURAPVIEFZP/bundle.json","state":"https://pith.science/pith/PWWDZBF3V2CACQDTURAPVIEFZP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PWWDZBF3V2CACQDTURAPVIEFZP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PWWDZBF3V2CACQDTURAPVIEFZP","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":"11fa47dc135bb6f9bcb797cdfbd7eeda75e90cac770f51a1bbb68b5f5c9e043a","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-09-21T15:37:02Z","title_canon_sha256":"15970390ddd518d10f876ec8f4325001fefe18d6c09430028897d8cf1f55746c"},"schema_version":"1.0","source":{"id":"1709.07449","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.07449","created_at":"2026-05-18T00:19:26Z"},{"alias_kind":"arxiv_version","alias_value":"1709.07449v1","created_at":"2026-05-18T00:19:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.07449","created_at":"2026-05-18T00:19:26Z"},{"alias_kind":"pith_short_12","alias_value":"PWWDZBF3V2CA","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PWWDZBF3V2CACQDT","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PWWDZBF3","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:da1e68d31685f26f9e3ce04acdd67ffcaf59bfec83c9e47e78568418442e760a","target":"graph","created_at":"2026-05-18T00:19:26Z","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 electron spectrometer, SPEDE, has been developed and will be employed in conjunction with the Miniball spectrometer at the HIE-ISOLDE facility, CERN. SPEDE allows for direct measurement of internal conversion electrons emitted in-flight, without employing magnetic fields to transport or momentum filter the electrons. Together with the Miniball spectrometer, it enables simultaneous observation of {\\gamma} rays and conversion electrons in Coulomb-excitation experiments using radioactive ion beams.","authors_text":"A. Illana, D.M. Cox, D.T. Joss, G.G. O'Neill, J. Konki, J. Ojala, J. Pakarinen, J. Thornhill, J. Tuunanen, K. Ranttila, L.P. Gaffney, M.J.G. Borge, N. Warr, P.A. Butler, P. Papadakis, P. Rahkila, P.T. Greenlees, P. Van Duppen, R.-D. Herzberg, R.D. Page, T. Kr\\\"oll","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-09-21T15:37:02Z","title":"The SPEDE spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.07449","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:d4af8747ea2bd7fadc4238fff6b7ce646e3e55156b4e56f7909c923da1bd9c21","target":"record","created_at":"2026-05-18T00:19:26Z","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":"11fa47dc135bb6f9bcb797cdfbd7eeda75e90cac770f51a1bbb68b5f5c9e043a","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-09-21T15:37:02Z","title_canon_sha256":"15970390ddd518d10f876ec8f4325001fefe18d6c09430028897d8cf1f55746c"},"schema_version":"1.0","source":{"id":"1709.07449","kind":"arxiv","version":1}},"canonical_sha256":"7dac3c84bbae84014073a440faa085cbc14034f48e4edaccfefb7f9e7a604c51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7dac3c84bbae84014073a440faa085cbc14034f48e4edaccfefb7f9e7a604c51","first_computed_at":"2026-05-18T00:19:26.712596Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:26.712596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LLDamRBjLjU5FjEQomGbuC61BmB9wXiuiR8fEeiZkgDcFhuyaOOwonk3SFZGSwJ5kouax8l6X6a6spfTKOq+DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:26.713371Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.07449","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4af8747ea2bd7fadc4238fff6b7ce646e3e55156b4e56f7909c923da1bd9c21","sha256:da1e68d31685f26f9e3ce04acdd67ffcaf59bfec83c9e47e78568418442e760a"],"state_sha256":"530403e8ebd02171a6baf2e46773e95948a88f37954ea757ab872abc80d276bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LYxfvpk0RTle5y1VILYa/3R9vjhHgTd+hxVvR5Pv3TyRTLrneSB1gq+QpyzCn0ZqMWXQqP0DCiWkA+unXnExAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:08:54.036820Z","bundle_sha256":"0731403445f1119912f4bd202330f546b44e7a5139008e5f1fd39ff1f5b01109"}}