{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:HVFVXLNVATLPMUJUAHWMQ44LPT","short_pith_number":"pith:HVFVXLNV","canonical_record":{"source":{"id":"1008.3900","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-23T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"71ee1d30c80c9d4920dfca2d295a22a3a40c4f5c5bb18eb060bec9aa6467711d","abstract_canon_sha256":"4e752879588e752dac448b404a48474644c16a78aee7fde34fe8ae125495a229"},"schema_version":"1.0"},"canonical_sha256":"3d4b5badb504d6f6513401ecc8738b7ce40d43988c6803f00d4a5ff2ea1bd715","source":{"kind":"arxiv","id":"1008.3900","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.3900","created_at":"2026-05-18T02:05:43Z"},{"alias_kind":"arxiv_version","alias_value":"1008.3900v1","created_at":"2026-05-18T02:05:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.3900","created_at":"2026-05-18T02:05:43Z"},{"alias_kind":"pith_short_12","alias_value":"HVFVXLNVATLP","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HVFVXLNVATLPMUJU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HVFVXLNV","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:HVFVXLNVATLPMUJUAHWMQ44LPT","target":"record","payload":{"canonical_record":{"source":{"id":"1008.3900","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-23T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"71ee1d30c80c9d4920dfca2d295a22a3a40c4f5c5bb18eb060bec9aa6467711d","abstract_canon_sha256":"4e752879588e752dac448b404a48474644c16a78aee7fde34fe8ae125495a229"},"schema_version":"1.0"},"canonical_sha256":"3d4b5badb504d6f6513401ecc8738b7ce40d43988c6803f00d4a5ff2ea1bd715","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:43.623990Z","signature_b64":"8Z6+Jyj5fsXPhqc0DY4sPU7bUDjvEWvYXUPQr6bFsBlOnKXx+c6DwbpJtMBFUN1RkV5P4F8V7QQUgHDTiGXXBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d4b5badb504d6f6513401ecc8738b7ce40d43988c6803f00d4a5ff2ea1bd715","last_reissued_at":"2026-05-18T02:05:43.623346Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:43.623346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.3900","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":"2026-05-18T02:05:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VJ04F3nsRWAsEPhbNTwLEZonN1QPkWvehlAyyxJujj9bu98qzzx72pwPgUtApNgc1NKB4vgMkWVitntkIWCnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:30:05.497364Z"},"content_sha256":"a215180ed41e9fe642b6459146a5a18553863a10910848258f94e466ff362109","schema_version":"1.0","event_id":"sha256:a215180ed41e9fe642b6459146a5a18553863a10910848258f94e466ff362109"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:HVFVXLNVATLPMUJUAHWMQ44LPT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Gemini NICI Planet-Finding Campaign","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Adam Burrows, Alan Boss, Beth A. Biller, Christ Ftaclas, Douglas Lin, Douglas Toomey, Elisabethe de Gouveia Dal Pino, Eric L. Nielsen, Evgenya L. Shkolnik, Fraser Clarke, I. Neill Reid, Jane Gregorio-Hetem, Laird M. Close, Marc J. Kuchner, Mark Chun, Markus Hartung, Matthias Tecza, Michael C. Liu, Niranjan Thatte, Pawel Artymowicz, Shigeru Ida, Silvia Alencar, Thomas L. Hayward, Zahed Wahhaj","submitted_at":"2010-08-23T20:00:01Z","abstract_excerpt":"Our team is carrying out a multi-year observing program to directly image and characterize young extrasolar planets using the Near-Infrared Coronagraphic Imager (NICI) on the Gemini-South 8.1-meter telescope. NICI is the first instrument on a large telescope designed from the outset for high-contrast imaging, comprising a high-performance curvature adaptive optics system with a simultaneous dual-channel coronagraphic imager. Combined with state-of-the-art observing methods and data processing, NICI typically achieves ~2 magnitudes better contrast compared to previous ground-based or space-base"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.3900","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":"2026-05-18T02:05:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tv/cXe7989xph8hQuqlolSoZvtNCTCX/+4QQxqgPBxPCZTyXu/tg3azTwrhfTUliYMmNsSTaBRL/u46jrYKJBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:30:05.498055Z"},"content_sha256":"4a51840653fb7f327f34067f9d1958bb2c644cc8c023aea35f9aa4a262a74a13","schema_version":"1.0","event_id":"sha256:4a51840653fb7f327f34067f9d1958bb2c644cc8c023aea35f9aa4a262a74a13"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HVFVXLNVATLPMUJUAHWMQ44LPT/bundle.json","state_url":"https://pith.science/pith/HVFVXLNVATLPMUJUAHWMQ44LPT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HVFVXLNVATLPMUJUAHWMQ44LPT/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":"2026-05-25T20:30:05Z","links":{"resolver":"https://pith.science/pith/HVFVXLNVATLPMUJUAHWMQ44LPT","bundle":"https://pith.science/pith/HVFVXLNVATLPMUJUAHWMQ44LPT/bundle.json","state":"https://pith.science/pith/HVFVXLNVATLPMUJUAHWMQ44LPT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HVFVXLNVATLPMUJUAHWMQ44LPT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:HVFVXLNVATLPMUJUAHWMQ44LPT","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":"4e752879588e752dac448b404a48474644c16a78aee7fde34fe8ae125495a229","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-23T20:00:01Z","title_canon_sha256":"71ee1d30c80c9d4920dfca2d295a22a3a40c4f5c5bb18eb060bec9aa6467711d"},"schema_version":"1.0","source":{"id":"1008.3900","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.3900","created_at":"2026-05-18T02:05:43Z"},{"alias_kind":"arxiv_version","alias_value":"1008.3900v1","created_at":"2026-05-18T02:05:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.3900","created_at":"2026-05-18T02:05:43Z"},{"alias_kind":"pith_short_12","alias_value":"HVFVXLNVATLP","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HVFVXLNVATLPMUJU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HVFVXLNV","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:4a51840653fb7f327f34067f9d1958bb2c644cc8c023aea35f9aa4a262a74a13","target":"graph","created_at":"2026-05-18T02:05:43Z","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":"Our team is carrying out a multi-year observing program to directly image and characterize young extrasolar planets using the Near-Infrared Coronagraphic Imager (NICI) on the Gemini-South 8.1-meter telescope. NICI is the first instrument on a large telescope designed from the outset for high-contrast imaging, comprising a high-performance curvature adaptive optics system with a simultaneous dual-channel coronagraphic imager. Combined with state-of-the-art observing methods and data processing, NICI typically achieves ~2 magnitudes better contrast compared to previous ground-based or space-base","authors_text":"Adam Burrows, Alan Boss, Beth A. Biller, Christ Ftaclas, Douglas Lin, Douglas Toomey, Elisabethe de Gouveia Dal Pino, Eric L. Nielsen, Evgenya L. Shkolnik, Fraser Clarke, I. Neill Reid, Jane Gregorio-Hetem, Laird M. Close, Marc J. Kuchner, Mark Chun, Markus Hartung, Matthias Tecza, Michael C. Liu, Niranjan Thatte, Pawel Artymowicz, Shigeru Ida, Silvia Alencar, Thomas L. Hayward, Zahed Wahhaj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-23T20:00:01Z","title":"The Gemini NICI Planet-Finding Campaign"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.3900","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:a215180ed41e9fe642b6459146a5a18553863a10910848258f94e466ff362109","target":"record","created_at":"2026-05-18T02:05:43Z","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":"4e752879588e752dac448b404a48474644c16a78aee7fde34fe8ae125495a229","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-23T20:00:01Z","title_canon_sha256":"71ee1d30c80c9d4920dfca2d295a22a3a40c4f5c5bb18eb060bec9aa6467711d"},"schema_version":"1.0","source":{"id":"1008.3900","kind":"arxiv","version":1}},"canonical_sha256":"3d4b5badb504d6f6513401ecc8738b7ce40d43988c6803f00d4a5ff2ea1bd715","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d4b5badb504d6f6513401ecc8738b7ce40d43988c6803f00d4a5ff2ea1bd715","first_computed_at":"2026-05-18T02:05:43.623346Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:43.623346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8Z6+Jyj5fsXPhqc0DY4sPU7bUDjvEWvYXUPQr6bFsBlOnKXx+c6DwbpJtMBFUN1RkV5P4F8V7QQUgHDTiGXXBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:43.623990Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.3900","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a215180ed41e9fe642b6459146a5a18553863a10910848258f94e466ff362109","sha256:4a51840653fb7f327f34067f9d1958bb2c644cc8c023aea35f9aa4a262a74a13"],"state_sha256":"17a821738ead82d29af3e01a3afc4d6b22230f569c6e784ba7c494aaddd21aec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u8TUwwTZBe74lMtRysc8q3D9Sxjsa5xNS7UAiAgb//dWaMfaElycBIF22w3fnbm+XOINjIx2ANKqThvpWgnUBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T20:30:05.501855Z","bundle_sha256":"5a43e73c0d84c9ec590f5d4b2956bc55a096627fa282d0ea93d43fa831ad69cc"}}