{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:4TYMOMKOYMDH3UNGVIDFEB6XDH","short_pith_number":"pith:4TYMOMKO","canonical_record":{"source":{"id":"1401.1914","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-09T07:51:14Z","cross_cats_sorted":[],"title_canon_sha256":"f3403d19f859ed502fc7aeab051a0e495a7bfe70db094c03a92d62219e9041d2","abstract_canon_sha256":"7563ede626f4041e3ae6edcff5d42a204752ac181b9f4b54952978e8c99ac216"},"schema_version":"1.0"},"canonical_sha256":"e4f0c7314ec3067dd1a6aa065207d719d90cc2c41b8584fb253202c901065ffd","source":{"kind":"arxiv","id":"1401.1914","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.1914","created_at":"2026-05-18T01:45:27Z"},{"alias_kind":"arxiv_version","alias_value":"1401.1914v2","created_at":"2026-05-18T01:45:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.1914","created_at":"2026-05-18T01:45:27Z"},{"alias_kind":"pith_short_12","alias_value":"4TYMOMKOYMDH","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"4TYMOMKOYMDH3UNG","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"4TYMOMKO","created_at":"2026-05-18T12:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:4TYMOMKOYMDH3UNGVIDFEB6XDH","target":"record","payload":{"canonical_record":{"source":{"id":"1401.1914","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-09T07:51:14Z","cross_cats_sorted":[],"title_canon_sha256":"f3403d19f859ed502fc7aeab051a0e495a7bfe70db094c03a92d62219e9041d2","abstract_canon_sha256":"7563ede626f4041e3ae6edcff5d42a204752ac181b9f4b54952978e8c99ac216"},"schema_version":"1.0"},"canonical_sha256":"e4f0c7314ec3067dd1a6aa065207d719d90cc2c41b8584fb253202c901065ffd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:27.251040Z","signature_b64":"T9yF+a2PfjOCkMb9zrMLt9w1VsH/JIBmtg6wHN9U10lXAlal7jD1gBIrVaxY8uoLZry/Zyv082Dq3iymg0GmCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4f0c7314ec3067dd1a6aa065207d719d90cc2c41b8584fb253202c901065ffd","last_reissued_at":"2026-05-18T01:45:27.250584Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:27.250584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.1914","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:45:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"99zTSakbd6kGr2F/RoiD8o4GVDXe+vuWlOPAD0CDSnY+f2I+WDtEbtMsB8FnysbjNFVMikUSVnIrlnFYCOYEAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:24:26.036000Z"},"content_sha256":"2946c1269e298d646c554d8ee5ad3288c9aa2ebd34e675b64bcf4931aacaaa14","schema_version":"1.0","event_id":"sha256:2946c1269e298d646c554d8ee5ad3288c9aa2ebd34e675b64bcf4931aacaaa14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:4TYMOMKOYMDH3UNGVIDFEB6XDH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards Laser-Guide-Stars for Multi-Aperture Interferometry: an application to the Hypertelescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Antoine Labeyrie, Paul D. Nu\\~nez, Pierre Riaud","submitted_at":"2014-01-09T07:51:14Z","abstract_excerpt":"Optical interferometry has been successful at achieving milliarcsecond resolution on bright stars. Imaging performance can improve greatly by increasing the number of baselines, which has motivated proposals to build large (~ 100 m) optical interferometers with tens to hundreds of telescopes. It is also desirable to adaptively correct atmospheric turbulence to obtain direct phased images of astrophysical sources. When a natural guide star is not available, we investigate the feasibility of using a modified laser-guide-star technique that is suitable for large diluted apertures. The method cons"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.1914","kind":"arxiv","version":2},"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":"2026-05-18T01:45:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dx+tixb71cMAMJGKQUa9Z2Y/E7J/zfIanOM0iZMbgO7ev1ZsU+lnAGnNKD9FAWhd4LgVLpIE1KE4OjBwnszBCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:24:26.036361Z"},"content_sha256":"0149532fe6d1cb0c8ee278717f3959962dba32d70e43f8e6319116851eb5cd26","schema_version":"1.0","event_id":"sha256:0149532fe6d1cb0c8ee278717f3959962dba32d70e43f8e6319116851eb5cd26"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH/bundle.json","state_url":"https://pith.science/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH/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":"2026-06-02T10:24:26Z","links":{"resolver":"https://pith.science/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH","bundle":"https://pith.science/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH/bundle.json","state":"https://pith.science/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4TYMOMKOYMDH3UNGVIDFEB6XDH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:4TYMOMKOYMDH3UNGVIDFEB6XDH","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":"7563ede626f4041e3ae6edcff5d42a204752ac181b9f4b54952978e8c99ac216","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-09T07:51:14Z","title_canon_sha256":"f3403d19f859ed502fc7aeab051a0e495a7bfe70db094c03a92d62219e9041d2"},"schema_version":"1.0","source":{"id":"1401.1914","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.1914","created_at":"2026-05-18T01:45:27Z"},{"alias_kind":"arxiv_version","alias_value":"1401.1914v2","created_at":"2026-05-18T01:45:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.1914","created_at":"2026-05-18T01:45:27Z"},{"alias_kind":"pith_short_12","alias_value":"4TYMOMKOYMDH","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"4TYMOMKOYMDH3UNG","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"4TYMOMKO","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:0149532fe6d1cb0c8ee278717f3959962dba32d70e43f8e6319116851eb5cd26","target":"graph","created_at":"2026-05-18T01:45:27Z","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":"Optical interferometry has been successful at achieving milliarcsecond resolution on bright stars. Imaging performance can improve greatly by increasing the number of baselines, which has motivated proposals to build large (~ 100 m) optical interferometers with tens to hundreds of telescopes. It is also desirable to adaptively correct atmospheric turbulence to obtain direct phased images of astrophysical sources. When a natural guide star is not available, we investigate the feasibility of using a modified laser-guide-star technique that is suitable for large diluted apertures. The method cons","authors_text":"Antoine Labeyrie, Paul D. Nu\\~nez, Pierre Riaud","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-09T07:51:14Z","title":"Towards Laser-Guide-Stars for Multi-Aperture Interferometry: an application to the Hypertelescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.1914","kind":"arxiv","version":2},"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":"sha256:2946c1269e298d646c554d8ee5ad3288c9aa2ebd34e675b64bcf4931aacaaa14","target":"record","created_at":"2026-05-18T01:45:27Z","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":"7563ede626f4041e3ae6edcff5d42a204752ac181b9f4b54952978e8c99ac216","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-09T07:51:14Z","title_canon_sha256":"f3403d19f859ed502fc7aeab051a0e495a7bfe70db094c03a92d62219e9041d2"},"schema_version":"1.0","source":{"id":"1401.1914","kind":"arxiv","version":2}},"canonical_sha256":"e4f0c7314ec3067dd1a6aa065207d719d90cc2c41b8584fb253202c901065ffd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4f0c7314ec3067dd1a6aa065207d719d90cc2c41b8584fb253202c901065ffd","first_computed_at":"2026-05-18T01:45:27.250584Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:27.250584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T9yF+a2PfjOCkMb9zrMLt9w1VsH/JIBmtg6wHN9U10lXAlal7jD1gBIrVaxY8uoLZry/Zyv082Dq3iymg0GmCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:27.251040Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.1914","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2946c1269e298d646c554d8ee5ad3288c9aa2ebd34e675b64bcf4931aacaaa14","sha256:0149532fe6d1cb0c8ee278717f3959962dba32d70e43f8e6319116851eb5cd26"],"state_sha256":"9dc338a9026ec8ebb482e8c545f44dc764e82ea33e39fd49217f1ea287921419"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FqcHcYmdBOnt5BuEJdBaDbefQ5FthBN/CHqDhyC9Ow9h0l6w/LRm0Jrx7kGZUJINeINlmGOrlelvhv44+Q3tAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:24:26.038394Z","bundle_sha256":"1fdc0c7d621be33447ea8c082ba713b345580609b9e9d5e0901535b8ffe4b845"}}