{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:2UAJ6PVSOAE7YFUJ7BRK5HK4H3","short_pith_number":"pith:2UAJ6PVS","canonical_record":{"source":{"id":"1908.01636","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T14:10:17Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"40b8eb99217511d53939c32c169b904bcdc2f56902322a6b6887885ebef0449f","abstract_canon_sha256":"70b1246c0d4d63ac529bb5448d118d0505a04f79c9f96b9700eab996509f33db"},"schema_version":"1.0"},"canonical_sha256":"d5009f3eb27009fc1689f862ae9d5c3ee0fc73ca221bb5bdedae0d0c46aaf185","source":{"kind":"arxiv","id":"1908.01636","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01636","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01636v1","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01636","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"pith_short_12","alias_value":"2UAJ6PVSOAE7","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"pith_short_16","alias_value":"2UAJ6PVSOAE7YFUJ","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"pith_short_8","alias_value":"2UAJ6PVS","created_at":"2026-07-05T00:45:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:2UAJ6PVSOAE7YFUJ7BRK5HK4H3","target":"record","payload":{"canonical_record":{"source":{"id":"1908.01636","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T14:10:17Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"40b8eb99217511d53939c32c169b904bcdc2f56902322a6b6887885ebef0449f","abstract_canon_sha256":"70b1246c0d4d63ac529bb5448d118d0505a04f79c9f96b9700eab996509f33db"},"schema_version":"1.0"},"canonical_sha256":"d5009f3eb27009fc1689f862ae9d5c3ee0fc73ca221bb5bdedae0d0c46aaf185","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:45:08.162578Z","signature_b64":"Vbk7ufmCGDY0IVcUSs4+KvlZatZUPI2p+Jyv/JK627R+PS3kPiBJ+rtW2u5dB+gwcOnhYR7nsYi7LqMusmL3DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5009f3eb27009fc1689f862ae9d5c3ee0fc73ca221bb5bdedae0d0c46aaf185","last_reissued_at":"2026-07-05T00:45:08.162084Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:45:08.162084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.01636","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":"2026-07-05T00:45:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f0662u5jzRkQuc9skn5fyHSSmDcBuTkmhmVikoxKS9CNXLbCLW259bgQhkK+s4XapYG0m/9oRb9cAc7fyfBJCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T13:51:14.673562Z"},"content_sha256":"0a296a882e6190089ffacb705e96bb0d6336d54daf814a6c6966e2a4a8798d12","schema_version":"1.0","event_id":"sha256:0a296a882e6190089ffacb705e96bb0d6336d54daf814a6c6966e2a4a8798d12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:2UAJ6PVSOAE7YFUJ7BRK5HK4H3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Expected performances of the Characterising Exoplanet Satellite (CHEOPS). I. Photometric performances from ground-based calibration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"2), (2) University of Cambridge, (3) University of Bern), Adrien Deline (1), Andrea Fortier (3), Bruno Chazelas (1), Christopher Broeg (3), David Futyan (1), Didier Queloz (1, Fran\\c{c}ois Wildi (1), Micha\\\"el Sordet (1), Willy Benz (3) ((1) University of Geneva","submitted_at":"2019-08-05T14:10:17Z","abstract_excerpt":"The Characterising Exoplanet Satellite (CHEOPS) is a space mission designed to perform photometric observations of bright stars to obtain precise radii measurements of transiting planets. The high-precision photometry of CHEOPS relies on careful on-ground calibration of its payload. For that purpose, intensive pre-launch campaigns of measurements were carried out to calibrate the instrument and characterise its photometric performances. We report on main results of these campaigns, provide a complete analysis of data sets and estimate in-flight photometric performance by mean of end-to-end sim"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01636","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/1908.01636/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":"2026-07-05T00:45:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZOmtmj1h0IVdesfjpU7oGDpz4vbUxvbdWJWaDy5bAa9B3gIlqWeQY+GOEjC69Zc6ajy9M+28b6ahabJX0JPgAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T13:51:14.674572Z"},"content_sha256":"1b6267f3eb6a2da58ff4399edaaa7336b644708cf5caf2039e34bb594ac4dcb3","schema_version":"1.0","event_id":"sha256:1b6267f3eb6a2da58ff4399edaaa7336b644708cf5caf2039e34bb594ac4dcb3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3/bundle.json","state_url":"https://pith.science/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3/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":"2026-08-17T13:51:14Z","links":{"resolver":"https://pith.science/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3","bundle":"https://pith.science/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3/bundle.json","state":"https://pith.science/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2UAJ6PVSOAE7YFUJ7BRK5HK4H3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:2UAJ6PVSOAE7YFUJ7BRK5HK4H3","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":"70b1246c0d4d63ac529bb5448d118d0505a04f79c9f96b9700eab996509f33db","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T14:10:17Z","title_canon_sha256":"40b8eb99217511d53939c32c169b904bcdc2f56902322a6b6887885ebef0449f"},"schema_version":"1.0","source":{"id":"1908.01636","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01636","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01636v1","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01636","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"pith_short_12","alias_value":"2UAJ6PVSOAE7","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"pith_short_16","alias_value":"2UAJ6PVSOAE7YFUJ","created_at":"2026-07-05T00:45:08Z"},{"alias_kind":"pith_short_8","alias_value":"2UAJ6PVS","created_at":"2026-07-05T00:45:08Z"}],"graph_snapshots":[{"event_id":"sha256:1b6267f3eb6a2da58ff4399edaaa7336b644708cf5caf2039e34bb594ac4dcb3","target":"graph","created_at":"2026-07-05T00:45:08Z","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/1908.01636/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Characterising Exoplanet Satellite (CHEOPS) is a space mission designed to perform photometric observations of bright stars to obtain precise radii measurements of transiting planets. The high-precision photometry of CHEOPS relies on careful on-ground calibration of its payload. For that purpose, intensive pre-launch campaigns of measurements were carried out to calibrate the instrument and characterise its photometric performances. We report on main results of these campaigns, provide a complete analysis of data sets and estimate in-flight photometric performance by mean of end-to-end sim","authors_text":"2), (2) University of Cambridge, (3) University of Bern), Adrien Deline (1), Andrea Fortier (3), Bruno Chazelas (1), Christopher Broeg (3), David Futyan (1), Didier Queloz (1, Fran\\c{c}ois Wildi (1), Micha\\\"el Sordet (1), Willy Benz (3) ((1) University of Geneva","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T14:10:17Z","title":"Expected performances of the Characterising Exoplanet Satellite (CHEOPS). I. Photometric performances from ground-based calibration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01636","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":"sha256:0a296a882e6190089ffacb705e96bb0d6336d54daf814a6c6966e2a4a8798d12","target":"record","created_at":"2026-07-05T00:45:08Z","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":"70b1246c0d4d63ac529bb5448d118d0505a04f79c9f96b9700eab996509f33db","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T14:10:17Z","title_canon_sha256":"40b8eb99217511d53939c32c169b904bcdc2f56902322a6b6887885ebef0449f"},"schema_version":"1.0","source":{"id":"1908.01636","kind":"arxiv","version":1}},"canonical_sha256":"d5009f3eb27009fc1689f862ae9d5c3ee0fc73ca221bb5bdedae0d0c46aaf185","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5009f3eb27009fc1689f862ae9d5c3ee0fc73ca221bb5bdedae0d0c46aaf185","first_computed_at":"2026-07-05T00:45:08.162084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:45:08.162084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vbk7ufmCGDY0IVcUSs4+KvlZatZUPI2p+Jyv/JK627R+PS3kPiBJ+rtW2u5dB+gwcOnhYR7nsYi7LqMusmL3DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:45:08.162578Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.01636","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a296a882e6190089ffacb705e96bb0d6336d54daf814a6c6966e2a4a8798d12","sha256:1b6267f3eb6a2da58ff4399edaaa7336b644708cf5caf2039e34bb594ac4dcb3"],"state_sha256":"25b9dce7def48442dac54c585eee6e246f1f09ebdbbaf1fedcb64048dd8f634f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iZbOAxXiRd0qvEnatlD9w33V1yqtsNy9FiqZxds4Oe94SMuQmIu9KNVsz2mJE3jL3b+GnKf+x8tpfWP9wGsKBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T13:51:14.681909Z","bundle_sha256":"53787b02b12932d4078e915ed79d273adaa33176699ba1caa2c656396095a285"}}