{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:45EDX3WFFB4QTBSSYTJ35XVA3Y","short_pith_number":"pith:45EDX3WF","canonical_record":{"source":{"id":"1303.0121","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-03-01T09:30:53Z","cross_cats_sorted":[],"title_canon_sha256":"041889701ca59b45364dd9beb64f619cda4d40a8add1525f530d9fbff8a0ff9d","abstract_canon_sha256":"822298618b44714361ed76c945c8ebfa19f3e2828f132b3a5b733f0ebd3322dd"},"schema_version":"1.0"},"canonical_sha256":"e7483beec52879098652c4d3bedea0de234968a62cfac509a29b6c4953b6990e","source":{"kind":"arxiv","id":"1303.0121","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0121","created_at":"2026-05-18T01:51:25Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0121v1","created_at":"2026-05-18T01:51:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0121","created_at":"2026-05-18T01:51:25Z"},{"alias_kind":"pith_short_12","alias_value":"45EDX3WFFB4Q","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"45EDX3WFFB4QTBSS","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"45EDX3WF","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:45EDX3WFFB4QTBSSYTJ35XVA3Y","target":"record","payload":{"canonical_record":{"source":{"id":"1303.0121","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-03-01T09:30:53Z","cross_cats_sorted":[],"title_canon_sha256":"041889701ca59b45364dd9beb64f619cda4d40a8add1525f530d9fbff8a0ff9d","abstract_canon_sha256":"822298618b44714361ed76c945c8ebfa19f3e2828f132b3a5b733f0ebd3322dd"},"schema_version":"1.0"},"canonical_sha256":"e7483beec52879098652c4d3bedea0de234968a62cfac509a29b6c4953b6990e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:25.599245Z","signature_b64":"rKJLw6kR0EHPoAoQ+CDWNfGz0NGQkGRYE+EPoSfBGc8vISjtvxfcYIF4+2nw0g5Lkw4M5jL0a2FjanMB3MEbCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7483beec52879098652c4d3bedea0de234968a62cfac509a29b6c4953b6990e","last_reissued_at":"2026-05-18T01:51:25.598636Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:25.598636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.0121","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":"2026-05-18T01:51:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H8ZieMxPP9QvS8TC8HIj8mCJJqyrNMH2fzpanPGrFgNbp7l3XTEULlsDypWn1UPYtBFnG0Fy9T8S7nxj1HzoBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:45:09.861970Z"},"content_sha256":"833072caf340b79055b636caf9d6cf7f53853e7dd294cf376bcbcfa7eee42d9d","schema_version":"1.0","event_id":"sha256:833072caf340b79055b636caf9d6cf7f53853e7dd294cf376bcbcfa7eee42d9d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:45EDX3WFFB4QTBSSYTJ35XVA3Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coronagraphic phase diversity: performance study and laboratory demonstration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"B. Paul, J.-F. Sauvage, L. M. Mugnier","submitted_at":"2013-03-01T09:30:53Z","abstract_excerpt":"The final performance of current and future instruments dedicated to exoplanet detection and characterization (such as SPHERE on the European Very Large Telescope, GPI on Gemini North, or future instruments on Extremely Large Telescopes) is limited by uncorrected quasi-static aberrations. These aberrations create long-lived speckles in the scientific image plane, which can easily be mistaken for planets. Common adaptive optics systems require dedicated components to perform wave-front analysis. The ultimate wave-front measurement performance is thus limited by the unavoidable differential aber"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0121","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":"2026-05-18T01:51:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AAggUkOFx76rHXbW9jBJ7oa+47KKWCKh12WJm3ngFgSuvI3awsYzKOPDpNTwRWPuvUJ4eTaSBtieqp0cMTNdCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:45:09.862613Z"},"content_sha256":"e50da015547a4239204d9540464d38c22f41fa5827c1df31792dcd5e1f03369e","schema_version":"1.0","event_id":"sha256:e50da015547a4239204d9540464d38c22f41fa5827c1df31792dcd5e1f03369e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y/bundle.json","state_url":"https://pith.science/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y/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":"2026-05-27T14:45:09Z","links":{"resolver":"https://pith.science/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y","bundle":"https://pith.science/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y/bundle.json","state":"https://pith.science/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/45EDX3WFFB4QTBSSYTJ35XVA3Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:45EDX3WFFB4QTBSSYTJ35XVA3Y","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":"822298618b44714361ed76c945c8ebfa19f3e2828f132b3a5b733f0ebd3322dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-03-01T09:30:53Z","title_canon_sha256":"041889701ca59b45364dd9beb64f619cda4d40a8add1525f530d9fbff8a0ff9d"},"schema_version":"1.0","source":{"id":"1303.0121","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0121","created_at":"2026-05-18T01:51:25Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0121v1","created_at":"2026-05-18T01:51:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0121","created_at":"2026-05-18T01:51:25Z"},{"alias_kind":"pith_short_12","alias_value":"45EDX3WFFB4Q","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"45EDX3WFFB4QTBSS","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"45EDX3WF","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:e50da015547a4239204d9540464d38c22f41fa5827c1df31792dcd5e1f03369e","target":"graph","created_at":"2026-05-18T01:51:25Z","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 final performance of current and future instruments dedicated to exoplanet detection and characterization (such as SPHERE on the European Very Large Telescope, GPI on Gemini North, or future instruments on Extremely Large Telescopes) is limited by uncorrected quasi-static aberrations. These aberrations create long-lived speckles in the scientific image plane, which can easily be mistaken for planets. Common adaptive optics systems require dedicated components to perform wave-front analysis. The ultimate wave-front measurement performance is thus limited by the unavoidable differential aber","authors_text":"B. Paul, J.-F. Sauvage, L. M. Mugnier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-03-01T09:30:53Z","title":"Coronagraphic phase diversity: performance study and laboratory demonstration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0121","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":"sha256:833072caf340b79055b636caf9d6cf7f53853e7dd294cf376bcbcfa7eee42d9d","target":"record","created_at":"2026-05-18T01:51:25Z","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":"822298618b44714361ed76c945c8ebfa19f3e2828f132b3a5b733f0ebd3322dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-03-01T09:30:53Z","title_canon_sha256":"041889701ca59b45364dd9beb64f619cda4d40a8add1525f530d9fbff8a0ff9d"},"schema_version":"1.0","source":{"id":"1303.0121","kind":"arxiv","version":1}},"canonical_sha256":"e7483beec52879098652c4d3bedea0de234968a62cfac509a29b6c4953b6990e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7483beec52879098652c4d3bedea0de234968a62cfac509a29b6c4953b6990e","first_computed_at":"2026-05-18T01:51:25.598636Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:25.598636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rKJLw6kR0EHPoAoQ+CDWNfGz0NGQkGRYE+EPoSfBGc8vISjtvxfcYIF4+2nw0g5Lkw4M5jL0a2FjanMB3MEbCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:25.599245Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.0121","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:833072caf340b79055b636caf9d6cf7f53853e7dd294cf376bcbcfa7eee42d9d","sha256:e50da015547a4239204d9540464d38c22f41fa5827c1df31792dcd5e1f03369e"],"state_sha256":"8ee2868c5365e912b04bbdef2bbb1d384b60d6235b89989b9cef84eaf4bc8eae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HxGxZgKM5+MCGtDrVOvoC0IfBd+TiIj6ahXn5yvGywO+vwjylFGknzo55d6ZXeIhbzYikn6CV8vAhCkmhsPdCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:45:09.866247Z","bundle_sha256":"bbe22678b2dc12ec6069c70f7ec091d14a366c82e8929233f38e8dd8285d1dc6"}}