{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:LZLPBC7IBASXPZR32BFG6OEXXU","short_pith_number":"pith:LZLPBC7I","canonical_record":{"source":{"id":"2111.03128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-04T19:52:38Z","cross_cats_sorted":[],"title_canon_sha256":"f4ff94de0d195358f53de975095a157667f9ad96bcc610f82723f0ead6d5ffee","abstract_canon_sha256":"8efefdbbc686f2b909ffab6b98fae3f6af316092a32f455bdc43ca660a684776"},"schema_version":"1.0"},"canonical_sha256":"5e56f08be8082577e63bd04a6f3897bd07013da47920ac35a0a03665d32892fc","source":{"kind":"arxiv","id":"2111.03128","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.03128","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"2111.03128v1","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.03128","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"LZLPBC7IBASX","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"LZLPBC7IBASXPZR3","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"LZLPBC7I","created_at":"2026-07-05T09:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:LZLPBC7IBASXPZR32BFG6OEXXU","target":"record","payload":{"canonical_record":{"source":{"id":"2111.03128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-04T19:52:38Z","cross_cats_sorted":[],"title_canon_sha256":"f4ff94de0d195358f53de975095a157667f9ad96bcc610f82723f0ead6d5ffee","abstract_canon_sha256":"8efefdbbc686f2b909ffab6b98fae3f6af316092a32f455bdc43ca660a684776"},"schema_version":"1.0"},"canonical_sha256":"5e56f08be8082577e63bd04a6f3897bd07013da47920ac35a0a03665d32892fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:26:12.332924Z","signature_b64":"8/G1E0LJf4FnohwvKYqVAB+PSeEK60w8ZPw2hoe5F6P9eQ0GFj4LYve2edbtKEwLr5t5or3WyVwz14C2c82XAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e56f08be8082577e63bd04a6f3897bd07013da47920ac35a0a03665d32892fc","last_reissued_at":"2026-07-05T09:26:12.332444Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:26:12.332444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.03128","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":"2026-07-05T09:26:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dbCSR/YP1aSvf/lKRFPXHPGH+/bSqEwGZZNFVYzs599LEaVNFpULRi+3xFzEbNHJA5BUfQ/b7O9Ip5W97oTFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T14:51:18.654393Z"},"content_sha256":"adb54b49bfb65e6e2ca06074e5b39dee57e64b2b754a8eddbebb5978cc89f276","schema_version":"1.0","event_id":"sha256:adb54b49bfb65e6e2ca06074e5b39dee57e64b2b754a8eddbebb5978cc89f276"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:LZLPBC7IBASXPZR32BFG6OEXXU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Embedded Firmware Development for a Novel CubeSat Gamma-Ray Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Alexey Ulyanov, Andrew Gloster, Brian Shortt, Conor O'Toole, Daire Sherwin, Daith\\'i de Faoite, David McKeown, David Murphy, Favour Okosun, Fergal Marshall, Gianluca Fontanesi, Jack Reilly, Jessica Erkal, Joe Flanagan, Joseph Mangan, Joseph Thompson, Kenneth Stanton, L\\'ana Salmon, Lorraine Hanlon, Maeve Doyle, Masoud Emam, Mike Hibbett, Rachel Dunwoody, Rakhi RajagopalanNair, Ronan Wall, Sarah Walsh, Sheila McBreen, Umair Javaid, William O'Connor","submitted_at":"2021-11-04T19:52:38Z","abstract_excerpt":"The Gamma-ray Module (GMOD) is an experiment designed for the detection of gamma-ray bursts in low Earth orbit as the principal scientific payload on a 2-U CubeSat, EIRSAT-1. GMOD comprises a cerium bromide scintillator coupled to silicon photomultipliers which are processed and digitised by a bespoke ASIC. Custom firmware on the GMOD motherboard has been designed, implemented and tested for the MSP430 microprocessor which manages the experiment including readout, storage and configuration of the system. The firmware has been verified in a series of experiments testing the response over a real"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.03128","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/2111.03128/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":"2026-07-05T09:26:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sAa/POjfk05VaKQUJFLvP0mzkgEMG1GCvM/JqEX7ILhBA2DBfv+HJGHUA+bVWe+txSHksnE6vZLvwUtVlZipCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T14:51:18.654773Z"},"content_sha256":"b931758f87fc0e80d74d6643f0b37ce8f643bac3eef4439bfdb3d1343e7c6c1d","schema_version":"1.0","event_id":"sha256:b931758f87fc0e80d74d6643f0b37ce8f643bac3eef4439bfdb3d1343e7c6c1d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LZLPBC7IBASXPZR32BFG6OEXXU/bundle.json","state_url":"https://pith.science/pith/LZLPBC7IBASXPZR32BFG6OEXXU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LZLPBC7IBASXPZR32BFG6OEXXU/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":"2026-07-10T14:51:18Z","links":{"resolver":"https://pith.science/pith/LZLPBC7IBASXPZR32BFG6OEXXU","bundle":"https://pith.science/pith/LZLPBC7IBASXPZR32BFG6OEXXU/bundle.json","state":"https://pith.science/pith/LZLPBC7IBASXPZR32BFG6OEXXU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LZLPBC7IBASXPZR32BFG6OEXXU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:LZLPBC7IBASXPZR32BFG6OEXXU","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":"8efefdbbc686f2b909ffab6b98fae3f6af316092a32f455bdc43ca660a684776","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-04T19:52:38Z","title_canon_sha256":"f4ff94de0d195358f53de975095a157667f9ad96bcc610f82723f0ead6d5ffee"},"schema_version":"1.0","source":{"id":"2111.03128","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.03128","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"2111.03128v1","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.03128","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"LZLPBC7IBASX","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"LZLPBC7IBASXPZR3","created_at":"2026-07-05T09:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"LZLPBC7I","created_at":"2026-07-05T09:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:b931758f87fc0e80d74d6643f0b37ce8f643bac3eef4439bfdb3d1343e7c6c1d","target":"graph","created_at":"2026-07-05T09:26:12Z","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/2111.03128/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Gamma-ray Module (GMOD) is an experiment designed for the detection of gamma-ray bursts in low Earth orbit as the principal scientific payload on a 2-U CubeSat, EIRSAT-1. GMOD comprises a cerium bromide scintillator coupled to silicon photomultipliers which are processed and digitised by a bespoke ASIC. Custom firmware on the GMOD motherboard has been designed, implemented and tested for the MSP430 microprocessor which manages the experiment including readout, storage and configuration of the system. The firmware has been verified in a series of experiments testing the response over a real","authors_text":"Alexey Ulyanov, Andrew Gloster, Brian Shortt, Conor O'Toole, Daire Sherwin, Daith\\'i de Faoite, David McKeown, David Murphy, Favour Okosun, Fergal Marshall, Gianluca Fontanesi, Jack Reilly, Jessica Erkal, Joe Flanagan, Joseph Mangan, Joseph Thompson, Kenneth Stanton, L\\'ana Salmon, Lorraine Hanlon, Maeve Doyle, Masoud Emam, Mike Hibbett, Rachel Dunwoody, Rakhi RajagopalanNair, Ronan Wall, Sarah Walsh, Sheila McBreen, Umair Javaid, William O'Connor","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-04T19:52:38Z","title":"Embedded Firmware Development for a Novel CubeSat Gamma-Ray Detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.03128","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:adb54b49bfb65e6e2ca06074e5b39dee57e64b2b754a8eddbebb5978cc89f276","target":"record","created_at":"2026-07-05T09:26:12Z","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":"8efefdbbc686f2b909ffab6b98fae3f6af316092a32f455bdc43ca660a684776","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-04T19:52:38Z","title_canon_sha256":"f4ff94de0d195358f53de975095a157667f9ad96bcc610f82723f0ead6d5ffee"},"schema_version":"1.0","source":{"id":"2111.03128","kind":"arxiv","version":1}},"canonical_sha256":"5e56f08be8082577e63bd04a6f3897bd07013da47920ac35a0a03665d32892fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e56f08be8082577e63bd04a6f3897bd07013da47920ac35a0a03665d32892fc","first_computed_at":"2026-07-05T09:26:12.332444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:26:12.332444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8/G1E0LJf4FnohwvKYqVAB+PSeEK60w8ZPw2hoe5F6P9eQ0GFj4LYve2edbtKEwLr5t5or3WyVwz14C2c82XAw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:26:12.332924Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.03128","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adb54b49bfb65e6e2ca06074e5b39dee57e64b2b754a8eddbebb5978cc89f276","sha256:b931758f87fc0e80d74d6643f0b37ce8f643bac3eef4439bfdb3d1343e7c6c1d"],"state_sha256":"93132d4a90e033e9b8b52e30eb9ea80c36a12beffd6e28b0e34bde6bfb8f5670"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rcPwIkf+6QlxFVJXI3AE/1WfV8253I0UeOHGIttmfCvQ3ZTPJDM/2fYny0p6UNON63Yx63uIux1facvbmW6KBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T14:51:18.656877Z","bundle_sha256":"0fd1c644b5cae479d0a5d65ea97f0b8f10a5211f3cc84adcf758562cb0776e85"}}