{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6WXWFCJMUVBJZHNLA4D7YBHD4C","short_pith_number":"pith:6WXWFCJM","canonical_record":{"source":{"id":"1712.07189","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-19T20:20:49Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"0e517e801c8e2ed7e30ea0984ada75391f7eed853149a3d68f64c55fb659604d","abstract_canon_sha256":"a232e0645c1a9c2001e7eb07385a397f49943f3c8881c236a90dd3bbbf0a5f02"},"schema_version":"1.0"},"canonical_sha256":"f5af62892ca5429c9dab0707fc04e3e0a71d4e1502b9dc830a0fb64d99ea84c7","source":{"kind":"arxiv","id":"1712.07189","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07189","created_at":"2026-05-18T00:27:35Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07189v1","created_at":"2026-05-18T00:27:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07189","created_at":"2026-05-18T00:27:35Z"},{"alias_kind":"pith_short_12","alias_value":"6WXWFCJMUVBJ","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6WXWFCJMUVBJZHNL","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6WXWFCJM","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6WXWFCJMUVBJZHNLA4D7YBHD4C","target":"record","payload":{"canonical_record":{"source":{"id":"1712.07189","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-19T20:20:49Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"0e517e801c8e2ed7e30ea0984ada75391f7eed853149a3d68f64c55fb659604d","abstract_canon_sha256":"a232e0645c1a9c2001e7eb07385a397f49943f3c8881c236a90dd3bbbf0a5f02"},"schema_version":"1.0"},"canonical_sha256":"f5af62892ca5429c9dab0707fc04e3e0a71d4e1502b9dc830a0fb64d99ea84c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:35.301715Z","signature_b64":"x1LI/1stEGsLVDPLLxgPqXdwdPalb/c5mtjUa4TyDYwXktF6jhVEh/WejkAd8+VQJNiTACF4jRt0qcjfAYP6Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5af62892ca5429c9dab0707fc04e3e0a71d4e1502b9dc830a0fb64d99ea84c7","last_reissued_at":"2026-05-18T00:27:35.300973Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:35.300973Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.07189","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":"2026-05-18T00:27:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"34O9CgWufJGBJsLR12wRZzZ9VCAok74iDp/p6Pexq315PORM0dLVbMThGwZQAe9JAUGDqxMHYpUPNsM8gVl6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:04:30.541685Z"},"content_sha256":"7dd825f5fc6af7bb1d8935c210dfb5cc28ae86daac226c1d584e2fa0d2983ce4","schema_version":"1.0","event_id":"sha256:7dd825f5fc6af7bb1d8935c210dfb5cc28ae86daac226c1d584e2fa0d2983ce4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6WXWFCJMUVBJZHNLA4D7YBHD4C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ground-based adaptive optics coronagraphic performance under closed-loop predictive control","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"Jared R. Males, Olivier Guyon","submitted_at":"2017-12-19T20:20:49Z","abstract_excerpt":"The discovery of the exoplanet Proxima b highlights the potential for the coming generation of giant segmented mirror telescopes (GSMTs) to characterize terrestrial --- potentially habitable --- planets orbiting nearby stars with direct imaging. This will require continued development and implementation of optimized adaptive optics systems feeding coronagraphs on the GSMTs. Such development should proceed with an understanding of the fundamental limits imposed by atmospheric turbulence. Here we seek to address this question with a semi-analytic framework for calculating the post-coronagraph co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07189","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":"2026-05-18T00:27:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pFxCSoepnrrmUduHlNbB4cbwtCfjKEU3/xX8d0BfWrxx3g4W7S8ciMRlLqG/GdWDETNZLMDFLvOM6KYOBsbFAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:04:30.542040Z"},"content_sha256":"1b8abf0bd433f44abc77d0876cd6042e1a9795491a5173615f4018563a3aa173","schema_version":"1.0","event_id":"sha256:1b8abf0bd433f44abc77d0876cd6042e1a9795491a5173615f4018563a3aa173"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C/bundle.json","state_url":"https://pith.science/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C/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":"2026-06-05T15:04:30Z","links":{"resolver":"https://pith.science/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C","bundle":"https://pith.science/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C/bundle.json","state":"https://pith.science/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6WXWFCJMUVBJZHNLA4D7YBHD4C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6WXWFCJMUVBJZHNLA4D7YBHD4C","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":"a232e0645c1a9c2001e7eb07385a397f49943f3c8881c236a90dd3bbbf0a5f02","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-19T20:20:49Z","title_canon_sha256":"0e517e801c8e2ed7e30ea0984ada75391f7eed853149a3d68f64c55fb659604d"},"schema_version":"1.0","source":{"id":"1712.07189","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07189","created_at":"2026-05-18T00:27:35Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07189v1","created_at":"2026-05-18T00:27:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07189","created_at":"2026-05-18T00:27:35Z"},{"alias_kind":"pith_short_12","alias_value":"6WXWFCJMUVBJ","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6WXWFCJMUVBJZHNL","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6WXWFCJM","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:1b8abf0bd433f44abc77d0876cd6042e1a9795491a5173615f4018563a3aa173","target":"graph","created_at":"2026-05-18T00:27:35Z","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":"The discovery of the exoplanet Proxima b highlights the potential for the coming generation of giant segmented mirror telescopes (GSMTs) to characterize terrestrial --- potentially habitable --- planets orbiting nearby stars with direct imaging. This will require continued development and implementation of optimized adaptive optics systems feeding coronagraphs on the GSMTs. Such development should proceed with an understanding of the fundamental limits imposed by atmospheric turbulence. Here we seek to address this question with a semi-analytic framework for calculating the post-coronagraph co","authors_text":"Jared R. Males, Olivier Guyon","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-19T20:20:49Z","title":"Ground-based adaptive optics coronagraphic performance under closed-loop predictive control"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07189","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":"sha256:7dd825f5fc6af7bb1d8935c210dfb5cc28ae86daac226c1d584e2fa0d2983ce4","target":"record","created_at":"2026-05-18T00:27:35Z","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":"a232e0645c1a9c2001e7eb07385a397f49943f3c8881c236a90dd3bbbf0a5f02","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-19T20:20:49Z","title_canon_sha256":"0e517e801c8e2ed7e30ea0984ada75391f7eed853149a3d68f64c55fb659604d"},"schema_version":"1.0","source":{"id":"1712.07189","kind":"arxiv","version":1}},"canonical_sha256":"f5af62892ca5429c9dab0707fc04e3e0a71d4e1502b9dc830a0fb64d99ea84c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5af62892ca5429c9dab0707fc04e3e0a71d4e1502b9dc830a0fb64d99ea84c7","first_computed_at":"2026-05-18T00:27:35.300973Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:35.300973Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x1LI/1stEGsLVDPLLxgPqXdwdPalb/c5mtjUa4TyDYwXktF6jhVEh/WejkAd8+VQJNiTACF4jRt0qcjfAYP6Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:35.301715Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.07189","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7dd825f5fc6af7bb1d8935c210dfb5cc28ae86daac226c1d584e2fa0d2983ce4","sha256:1b8abf0bd433f44abc77d0876cd6042e1a9795491a5173615f4018563a3aa173"],"state_sha256":"5b2e3a11f86369329c42d0b163d0b2131cf51a5754ba3fd864a08d2caedeaeca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xi3OGA5HbouyQZXbVlC2RoOq8G6Kz2vja38dCcpsQQx3ZfptOKg6vQeyHKG2Twbpq8kK8nuL3f6riBslgo1oAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T15:04:30.544155Z","bundle_sha256":"e8c435a2c5e52e7549c3e4fb8150f0cb8353d3bc5c69e753a9fdd01d2bcd5df5"}}