{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:BCGKZOCCX2XXSFQJYJBIZWPVGN","short_pith_number":"pith:BCGKZOCC","canonical_record":{"source":{"id":"1607.08239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-07-27T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"c281332f84289f4fd4b179177b7a089709f8b4b38305275fd23f73710bb3d617","abstract_canon_sha256":"7797b8b4517c43db77dfa80cabce0e816f459a0ae11d23bc2f115d28eabeb1c7"},"schema_version":"1.0"},"canonical_sha256":"088cacb842beaf791609c2428cd9f5334097ea78ef5ab3202205cd90b37f49e1","source":{"kind":"arxiv","id":"1607.08239","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08239","created_at":"2026-05-18T01:02:00Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08239v1","created_at":"2026-05-18T01:02:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08239","created_at":"2026-05-18T01:02:00Z"},{"alias_kind":"pith_short_12","alias_value":"BCGKZOCCX2XX","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"BCGKZOCCX2XXSFQJ","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"BCGKZOCC","created_at":"2026-05-18T12:30:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:BCGKZOCCX2XXSFQJYJBIZWPVGN","target":"record","payload":{"canonical_record":{"source":{"id":"1607.08239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-07-27T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"c281332f84289f4fd4b179177b7a089709f8b4b38305275fd23f73710bb3d617","abstract_canon_sha256":"7797b8b4517c43db77dfa80cabce0e816f459a0ae11d23bc2f115d28eabeb1c7"},"schema_version":"1.0"},"canonical_sha256":"088cacb842beaf791609c2428cd9f5334097ea78ef5ab3202205cd90b37f49e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:00.152718Z","signature_b64":"8TV9ymVWjwO0ZHNE1cJ0GOYEgsLH/yQeqf5vKTGNgdLsYUuHaL4LbyUXmHiNfnSotvfcFDMzXLtyHuuikv6iBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"088cacb842beaf791609c2428cd9f5334097ea78ef5ab3202205cd90b37f49e1","last_reissued_at":"2026-05-18T01:02:00.152124Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:00.152124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.08239","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":"2026-05-18T01:02:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7Saiu7m4fvb7h8mVynUWVRiZMlnr9VjSa4nh0/RTdPI9tjvy6BuxpZQssF1ok+qPNxMhB3KQksNkkNAuTfMFDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:13:30.896706Z"},"content_sha256":"d2559c34e307b79241fb2fa56d025676ac8988f730a466c29db61b99c52b41e5","schema_version":"1.0","event_id":"sha256:d2559c34e307b79241fb2fa56d025676ac8988f730a466c29db61b99c52b41e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:BCGKZOCCX2XXSFQJYJBIZWPVGN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The International Deep Planet Survey II: The frequency of directly imaged giant exoplanets with stellar mass","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Ben Zuckerman, Bruce Macintosh, Christian Marois, David Lafreniere, Eric L. Nielsen, Inseok Song, Jenny Patience, Quinn Konopacky, Raphael Galicher, Rene Doyon, Travis Barman","submitted_at":"2016-07-27T20:00:01Z","abstract_excerpt":"Radial velocity and transit methods are effective for the study of short orbital period exoplanets but they hardly probe objects at large separations for which direct imaging can be used. We carried out the international deep planet survey of 292 young nearby stars to search for giant exoplanets and determine their frequency. We developed a pipeline for a uniform processing of all the data that we have recorded with NIRC2/Keck II, NIRI/Gemini North, NICI/Gemini South, and NACO/VLT for 14 years. The pipeline first applies cosmetic corrections and then reduces the speckle intensity to enhance th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08239","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":"2026-05-18T01:02:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zPTW1N3qUDqPe93eABkcnlbKmPrhRBnYFqRGTHoe0xF7jKvT6C7jeUcy94LM72xaF8C9mU/mFisEG3TpQP7sDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:13:30.897054Z"},"content_sha256":"964038075121b8a665ad7bafcc3783b70a539747cda9dd9a64320b4f2c371103","schema_version":"1.0","event_id":"sha256:964038075121b8a665ad7bafcc3783b70a539747cda9dd9a64320b4f2c371103"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN/bundle.json","state_url":"https://pith.science/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN/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":"2026-06-01T15:13:30Z","links":{"resolver":"https://pith.science/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN","bundle":"https://pith.science/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN/bundle.json","state":"https://pith.science/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BCGKZOCCX2XXSFQJYJBIZWPVGN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:BCGKZOCCX2XXSFQJYJBIZWPVGN","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":"7797b8b4517c43db77dfa80cabce0e816f459a0ae11d23bc2f115d28eabeb1c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-07-27T20:00:01Z","title_canon_sha256":"c281332f84289f4fd4b179177b7a089709f8b4b38305275fd23f73710bb3d617"},"schema_version":"1.0","source":{"id":"1607.08239","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08239","created_at":"2026-05-18T01:02:00Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08239v1","created_at":"2026-05-18T01:02:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08239","created_at":"2026-05-18T01:02:00Z"},{"alias_kind":"pith_short_12","alias_value":"BCGKZOCCX2XX","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"BCGKZOCCX2XXSFQJ","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"BCGKZOCC","created_at":"2026-05-18T12:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:964038075121b8a665ad7bafcc3783b70a539747cda9dd9a64320b4f2c371103","target":"graph","created_at":"2026-05-18T01:02:00Z","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":"Radial velocity and transit methods are effective for the study of short orbital period exoplanets but they hardly probe objects at large separations for which direct imaging can be used. We carried out the international deep planet survey of 292 young nearby stars to search for giant exoplanets and determine their frequency. We developed a pipeline for a uniform processing of all the data that we have recorded with NIRC2/Keck II, NIRI/Gemini North, NICI/Gemini South, and NACO/VLT for 14 years. The pipeline first applies cosmetic corrections and then reduces the speckle intensity to enhance th","authors_text":"Ben Zuckerman, Bruce Macintosh, Christian Marois, David Lafreniere, Eric L. Nielsen, Inseok Song, Jenny Patience, Quinn Konopacky, Raphael Galicher, Rene Doyon, Travis Barman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-07-27T20:00:01Z","title":"The International Deep Planet Survey II: The frequency of directly imaged giant exoplanets with stellar mass"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08239","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:d2559c34e307b79241fb2fa56d025676ac8988f730a466c29db61b99c52b41e5","target":"record","created_at":"2026-05-18T01:02:00Z","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":"7797b8b4517c43db77dfa80cabce0e816f459a0ae11d23bc2f115d28eabeb1c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-07-27T20:00:01Z","title_canon_sha256":"c281332f84289f4fd4b179177b7a089709f8b4b38305275fd23f73710bb3d617"},"schema_version":"1.0","source":{"id":"1607.08239","kind":"arxiv","version":1}},"canonical_sha256":"088cacb842beaf791609c2428cd9f5334097ea78ef5ab3202205cd90b37f49e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"088cacb842beaf791609c2428cd9f5334097ea78ef5ab3202205cd90b37f49e1","first_computed_at":"2026-05-18T01:02:00.152124Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:00.152124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8TV9ymVWjwO0ZHNE1cJ0GOYEgsLH/yQeqf5vKTGNgdLsYUuHaL4LbyUXmHiNfnSotvfcFDMzXLtyHuuikv6iBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:00.152718Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.08239","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2559c34e307b79241fb2fa56d025676ac8988f730a466c29db61b99c52b41e5","sha256:964038075121b8a665ad7bafcc3783b70a539747cda9dd9a64320b4f2c371103"],"state_sha256":"73350b19886f2ec5ada94bcabd7935fcf509989d85a133e00cab6d6002839a0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"63E2muj9mr8UTTabQ4vBm9+cP8O5mLZyiBnZbq91sDHc2jZ8LhthPIoZYGIaDTCnYQGQmkmz5kGFvm8T80NYAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:13:30.899008Z","bundle_sha256":"c457aae70c13f49dd3cf26d49ef5de59fa3bce2cf3f217bfac05948dbd674fae"}}