{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:Q6D2MD2Q2Q2IY24DOAFY7MUZTH","short_pith_number":"pith:Q6D2MD2Q","canonical_record":{"source":{"id":"2209.03337","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-07T17:50:35Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"e79c87f10262fcec04d01cbdddf142c33790e58aeb6c674eab55bab84c7fcd54","abstract_canon_sha256":"02f7f9f73d4f77eb90430860150090baa4ab8c2bc71a435964545f1115ef2821"},"schema_version":"1.0"},"canonical_sha256":"8787a60f50d4348c6b83700b8fb29999f6887e5a8a35435ed2524faf06a939c3","source":{"kind":"arxiv","id":"2209.03337","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.03337","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"arxiv_version","alias_value":"2209.03337v1","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.03337","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"pith_short_12","alias_value":"Q6D2MD2Q2Q2I","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"pith_short_16","alias_value":"Q6D2MD2Q2Q2IY24D","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"pith_short_8","alias_value":"Q6D2MD2Q","created_at":"2026-07-05T04:55:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:Q6D2MD2Q2Q2IY24DOAFY7MUZTH","target":"record","payload":{"canonical_record":{"source":{"id":"2209.03337","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-07T17:50:35Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"e79c87f10262fcec04d01cbdddf142c33790e58aeb6c674eab55bab84c7fcd54","abstract_canon_sha256":"02f7f9f73d4f77eb90430860150090baa4ab8c2bc71a435964545f1115ef2821"},"schema_version":"1.0"},"canonical_sha256":"8787a60f50d4348c6b83700b8fb29999f6887e5a8a35435ed2524faf06a939c3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:55:34.164730Z","signature_b64":"UKd7PHwsygd/emFpUt5XO6qVp43jXy1hZStbFORKVWkZdSMtz7Y6kCW1i2HyL+oGj+VEYn+D83Kzo4RSV6xyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8787a60f50d4348c6b83700b8fb29999f6887e5a8a35435ed2524faf06a939c3","last_reissued_at":"2026-07-05T04:55:34.164291Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:55:34.164291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.03337","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":"2026-07-05T04:55:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y5kYI4lCIeqW1BvUgWrMGWZBPbiAz2TvyeIM9QHSrN17KUx1dHISKzbKKhxNWsf9GSVvrHqLPJJLqvR3WdyACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T12:27:35.529418Z"},"content_sha256":"951765a6243f8961414ed8f8232283f9fa922320645b4e406b37d230bab18c35","schema_version":"1.0","event_id":"sha256:951765a6243f8961414ed8f8232283f9fa922320645b4e406b37d230bab18c35"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:Q6D2MD2Q2Q2IY24DOAFY7MUZTH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Twinkle -- a small satellite spectroscopy mission for the next phase of exoplanet science","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"Ahmed Al-Refaie, Barbara Ercolano, Benjamin Wilcock, Billy Edwards, Caprice Phillips, Daniel Holdsworth, Dax Feliz, Derek Ward-Thompson, Duncan Wright, Giorgio Savini, Giovanna Tinetti, Hilding Neilson, Ian Stotesbury, Ing-Guey Jiang, James J. Veilleux, Jean-Francois Lavigne, Ji-Lin Zhou, Jonathan Tennyson, Karan Molaverdikhani, Keivan G. Stassun, Lawrence Bradley, Li-Chin Yeh, Marcell Tessenyi, Matt Griffin, Max Joshua, Ming Yang, Nataliea Lowson, Nina Hernitschek, Philip Windred, Richard Archer, Sally Dodson-Robinson, Scott Gaudi, Subhajit Sarkar, Sushuang Ma, Thomas Preibisch, Til Birnstiel, Vasco Pesquita, Yoga Barrathwaj Raman Mohan","submitted_at":"2022-09-07T17:50:35Z","abstract_excerpt":"With a focus on off-the-shelf components, Twinkle is the first in a series of cost competitive small satellites managed and financed by Blue Skies Space Ltd. The satellite is based on a high-heritage Airbus platform that will carry a 0.45 m telescope and a spectrometer which will provide simultaneous wavelength coverage from 0.5-4.5 $\\rm{\\mu m}$. The spacecraft prime is Airbus Stevenage while the telescope is being developed by Airbus Toulouse and the spectrometer by ABB Canada. Scheduled to begin scientific operations in 2025, Twinkle will sit in a thermally-stable, sun-synchronous, low-Earth"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.03337","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/2209.03337/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":"2026-07-05T04:55:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ldW3LzxViOxrt4iGO+HtM2zLqJIXFPrB1uEw4Md9MquDxjpWZiG6jPvX8e09ivqx8SbbQqEMYGvunv2bh3mUCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T12:27:35.531731Z"},"content_sha256":"693ba83a145cc318b94e971c4976ea24d314730d9ce8f36c78ce917b5991745f","schema_version":"1.0","event_id":"sha256:693ba83a145cc318b94e971c4976ea24d314730d9ce8f36c78ce917b5991745f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH/bundle.json","state_url":"https://pith.science/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH/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":"2026-08-18T12:27:35Z","links":{"resolver":"https://pith.science/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH","bundle":"https://pith.science/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH/bundle.json","state":"https://pith.science/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q6D2MD2Q2Q2IY24DOAFY7MUZTH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:Q6D2MD2Q2Q2IY24DOAFY7MUZTH","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":"02f7f9f73d4f77eb90430860150090baa4ab8c2bc71a435964545f1115ef2821","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-07T17:50:35Z","title_canon_sha256":"e79c87f10262fcec04d01cbdddf142c33790e58aeb6c674eab55bab84c7fcd54"},"schema_version":"1.0","source":{"id":"2209.03337","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.03337","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"arxiv_version","alias_value":"2209.03337v1","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.03337","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"pith_short_12","alias_value":"Q6D2MD2Q2Q2I","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"pith_short_16","alias_value":"Q6D2MD2Q2Q2IY24D","created_at":"2026-07-05T04:55:34Z"},{"alias_kind":"pith_short_8","alias_value":"Q6D2MD2Q","created_at":"2026-07-05T04:55:34Z"}],"graph_snapshots":[{"event_id":"sha256:693ba83a145cc318b94e971c4976ea24d314730d9ce8f36c78ce917b5991745f","target":"graph","created_at":"2026-07-05T04:55:34Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2209.03337/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With a focus on off-the-shelf components, Twinkle is the first in a series of cost competitive small satellites managed and financed by Blue Skies Space Ltd. The satellite is based on a high-heritage Airbus platform that will carry a 0.45 m telescope and a spectrometer which will provide simultaneous wavelength coverage from 0.5-4.5 $\\rm{\\mu m}$. The spacecraft prime is Airbus Stevenage while the telescope is being developed by Airbus Toulouse and the spectrometer by ABB Canada. Scheduled to begin scientific operations in 2025, Twinkle will sit in a thermally-stable, sun-synchronous, low-Earth","authors_text":"Ahmed Al-Refaie, Barbara Ercolano, Benjamin Wilcock, Billy Edwards, Caprice Phillips, Daniel Holdsworth, Dax Feliz, Derek Ward-Thompson, Duncan Wright, Giorgio Savini, Giovanna Tinetti, Hilding Neilson, Ian Stotesbury, Ing-Guey Jiang, James J. Veilleux, Jean-Francois Lavigne, Ji-Lin Zhou, Jonathan Tennyson, Karan Molaverdikhani, Keivan G. Stassun, Lawrence Bradley, Li-Chin Yeh, Marcell Tessenyi, Matt Griffin, Max Joshua, Ming Yang, Nataliea Lowson, Nina Hernitschek, Philip Windred, Richard Archer, Sally Dodson-Robinson, Scott Gaudi, Subhajit Sarkar, Sushuang Ma, Thomas Preibisch, Til Birnstiel, Vasco Pesquita, Yoga Barrathwaj Raman Mohan","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-07T17:50:35Z","title":"Twinkle -- a small satellite spectroscopy mission for the next phase of exoplanet science"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.03337","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":"sha256:951765a6243f8961414ed8f8232283f9fa922320645b4e406b37d230bab18c35","target":"record","created_at":"2026-07-05T04:55:34Z","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":"02f7f9f73d4f77eb90430860150090baa4ab8c2bc71a435964545f1115ef2821","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-07T17:50:35Z","title_canon_sha256":"e79c87f10262fcec04d01cbdddf142c33790e58aeb6c674eab55bab84c7fcd54"},"schema_version":"1.0","source":{"id":"2209.03337","kind":"arxiv","version":1}},"canonical_sha256":"8787a60f50d4348c6b83700b8fb29999f6887e5a8a35435ed2524faf06a939c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8787a60f50d4348c6b83700b8fb29999f6887e5a8a35435ed2524faf06a939c3","first_computed_at":"2026-07-05T04:55:34.164291Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:55:34.164291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UKd7PHwsygd/emFpUt5XO6qVp43jXy1hZStbFORKVWkZdSMtz7Y6kCW1i2HyL+oGj+VEYn+D83Kzo4RSV6xyAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:55:34.164730Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.03337","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:951765a6243f8961414ed8f8232283f9fa922320645b4e406b37d230bab18c35","sha256:693ba83a145cc318b94e971c4976ea24d314730d9ce8f36c78ce917b5991745f"],"state_sha256":"6a4326596541a90b83a32ba8401e1c6d425b8f9589984b198f9d9d13f8dbbb76"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qunlJ4v9H4+XLwONVO9Rb4YHVvFI39AuBSWfDj6kxJBXvZ1h9QBm9eMsfG3qLPeV9GuCId0wTGtRh/BCBh9/Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T12:27:35.541881Z","bundle_sha256":"41284893da7a6efeb1b3b3202daf1d24773be93b2afc95ba616001735b6baa8f"}}