{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:3TLXPM6X5NLKUWEJER5BE3ICF2","short_pith_number":"pith:3TLXPM6X","canonical_record":{"source":{"id":"2102.08695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-02-17T11:17:25Z","cross_cats_sorted":[],"title_canon_sha256":"a787954a26e994b95a266d5d7cf02059dbc8cf9c415ed85d907f82a19a706c06","abstract_canon_sha256":"ccc90afeea7673446838da774b5254dfff82ec317b5280720f6ee80a4bec6e05"},"schema_version":"1.0"},"canonical_sha256":"dcd777b3d7eb56aa5889247a126d022e8c6f0383c2f4cc4f53e5a53d8fb58924","source":{"kind":"arxiv","id":"2102.08695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.08695","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"arxiv_version","alias_value":"2102.08695v1","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.08695","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"pith_short_12","alias_value":"3TLXPM6X5NLK","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"pith_short_16","alias_value":"3TLXPM6X5NLKUWEJ","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"pith_short_8","alias_value":"3TLXPM6X","created_at":"2026-07-05T02:16:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:3TLXPM6X5NLKUWEJER5BE3ICF2","target":"record","payload":{"canonical_record":{"source":{"id":"2102.08695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-02-17T11:17:25Z","cross_cats_sorted":[],"title_canon_sha256":"a787954a26e994b95a266d5d7cf02059dbc8cf9c415ed85d907f82a19a706c06","abstract_canon_sha256":"ccc90afeea7673446838da774b5254dfff82ec317b5280720f6ee80a4bec6e05"},"schema_version":"1.0"},"canonical_sha256":"dcd777b3d7eb56aa5889247a126d022e8c6f0383c2f4cc4f53e5a53d8fb58924","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:16:06.334872Z","signature_b64":"dq3xDp5D8l+7UFwIOWHEfzIbPSzSl1u4rxS2ZsWXycKTCGh67BohRn9L+GI1atRMzYE80nBZ2R1O2LhlVMXDDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dcd777b3d7eb56aa5889247a126d022e8c6f0383c2f4cc4f53e5a53d8fb58924","last_reissued_at":"2026-07-05T02:16:06.334112Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:16:06.334112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.08695","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":"2026-07-05T02:16:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+dVaoIIXXWgW84nK3nW4Sltan6zHk0zZ1i0AGHpR54+wx7plrq3hhIkvId+jIJfMb0x2GbhpoEQuBP+1Mdm8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:44:09.904861Z"},"content_sha256":"2e9fd9be7399bcab624a4ad5431134b3503b99cb1597f2d65d0bad88a1ad3830","schema_version":"1.0","event_id":"sha256:2e9fd9be7399bcab624a4ad5431134b3503b99cb1597f2d65d0bad88a1ad3830"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:3TLXPM6X5NLKUWEJER5BE3ICF2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The development of the THESEUS SXI optics","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Alexander Lodge, Charlotte H. Feldman, Emile Schyns, Hannah Natasha Lerman, Ian Hutchinson, Julien Seguy, Melissa McHugh, Paul O'Brien, Ray Fairbend, Richard Willingale, Roisin Speight, Romain Roudot","submitted_at":"2021-02-17T11:17:25Z","abstract_excerpt":"The Transient High Energy Sources and Early Universe Surveyor is an ESA M5 candidate mission currently in Phase A, with Launch in $\\sim$2032. The aim of the mission is to complete a Gamma Ray Burst survey and monitor transient X-ray events. The University of Leicester is the PI institute for the Soft X-ray Instrument (SXI), and is responsible for both the optic and detector development. The SXI consists of two wide field, lobster eye X-ray modules. Each module consists of 64 Micro Pore Optics (MPO) in an 8 by 8 array and 8 CMOS detectors in each focal plane. The geometry of the MPOs comprises "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.08695","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/2102.08695/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":"2026-07-05T02:16:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+vDBAs3ez1lK53Je+5U2/Wg1b4kDFIJ5Bv0fpKOqsLJbeTOX0wuapQ/vTz7yAF9kg+uZwmRgnxXy0KJsO9niCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:44:09.905771Z"},"content_sha256":"0953a1bd6f6b569ba9a23f1b44059bea2437e4052e7210212157b32596d20387","schema_version":"1.0","event_id":"sha256:0953a1bd6f6b569ba9a23f1b44059bea2437e4052e7210212157b32596d20387"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3TLXPM6X5NLKUWEJER5BE3ICF2/bundle.json","state_url":"https://pith.science/pith/3TLXPM6X5NLKUWEJER5BE3ICF2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3TLXPM6X5NLKUWEJER5BE3ICF2/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":"2026-08-03T21:44:09Z","links":{"resolver":"https://pith.science/pith/3TLXPM6X5NLKUWEJER5BE3ICF2","bundle":"https://pith.science/pith/3TLXPM6X5NLKUWEJER5BE3ICF2/bundle.json","state":"https://pith.science/pith/3TLXPM6X5NLKUWEJER5BE3ICF2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3TLXPM6X5NLKUWEJER5BE3ICF2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:3TLXPM6X5NLKUWEJER5BE3ICF2","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":"ccc90afeea7673446838da774b5254dfff82ec317b5280720f6ee80a4bec6e05","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-02-17T11:17:25Z","title_canon_sha256":"a787954a26e994b95a266d5d7cf02059dbc8cf9c415ed85d907f82a19a706c06"},"schema_version":"1.0","source":{"id":"2102.08695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.08695","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"arxiv_version","alias_value":"2102.08695v1","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.08695","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"pith_short_12","alias_value":"3TLXPM6X5NLK","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"pith_short_16","alias_value":"3TLXPM6X5NLKUWEJ","created_at":"2026-07-05T02:16:06Z"},{"alias_kind":"pith_short_8","alias_value":"3TLXPM6X","created_at":"2026-07-05T02:16:06Z"}],"graph_snapshots":[{"event_id":"sha256:0953a1bd6f6b569ba9a23f1b44059bea2437e4052e7210212157b32596d20387","target":"graph","created_at":"2026-07-05T02:16:06Z","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/2102.08695/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Transient High Energy Sources and Early Universe Surveyor is an ESA M5 candidate mission currently in Phase A, with Launch in $\\sim$2032. The aim of the mission is to complete a Gamma Ray Burst survey and monitor transient X-ray events. The University of Leicester is the PI institute for the Soft X-ray Instrument (SXI), and is responsible for both the optic and detector development. The SXI consists of two wide field, lobster eye X-ray modules. Each module consists of 64 Micro Pore Optics (MPO) in an 8 by 8 array and 8 CMOS detectors in each focal plane. The geometry of the MPOs comprises ","authors_text":"Alexander Lodge, Charlotte H. Feldman, Emile Schyns, Hannah Natasha Lerman, Ian Hutchinson, Julien Seguy, Melissa McHugh, Paul O'Brien, Ray Fairbend, Richard Willingale, Roisin Speight, Romain Roudot","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-02-17T11:17:25Z","title":"The development of the THESEUS SXI optics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.08695","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":"sha256:2e9fd9be7399bcab624a4ad5431134b3503b99cb1597f2d65d0bad88a1ad3830","target":"record","created_at":"2026-07-05T02:16:06Z","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":"ccc90afeea7673446838da774b5254dfff82ec317b5280720f6ee80a4bec6e05","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-02-17T11:17:25Z","title_canon_sha256":"a787954a26e994b95a266d5d7cf02059dbc8cf9c415ed85d907f82a19a706c06"},"schema_version":"1.0","source":{"id":"2102.08695","kind":"arxiv","version":1}},"canonical_sha256":"dcd777b3d7eb56aa5889247a126d022e8c6f0383c2f4cc4f53e5a53d8fb58924","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dcd777b3d7eb56aa5889247a126d022e8c6f0383c2f4cc4f53e5a53d8fb58924","first_computed_at":"2026-07-05T02:16:06.334112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:16:06.334112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dq3xDp5D8l+7UFwIOWHEfzIbPSzSl1u4rxS2ZsWXycKTCGh67BohRn9L+GI1atRMzYE80nBZ2R1O2LhlVMXDDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:16:06.334872Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.08695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e9fd9be7399bcab624a4ad5431134b3503b99cb1597f2d65d0bad88a1ad3830","sha256:0953a1bd6f6b569ba9a23f1b44059bea2437e4052e7210212157b32596d20387"],"state_sha256":"e90837b5816f55bd9e0a9a8efd30e6b9b5cd802ed5a9f2ff4103a1a1b4e9ece8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IkD1pTgaiylTBNG07liZ9bNI8YY9z67mCM881Wr2s7eSOdY2b49fvffwhd6/ixfR3F4ILhDlchoHwVQL6GIuDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:44:09.912283Z","bundle_sha256":"1fe6c03fd5902ead730cbbb3f0342c0963c3678b01d02ddf216fc84ffd375efe"}}