{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:CPKRM2W5CQ6M4V2C4QME6WLAPG","short_pith_number":"pith:CPKRM2W5","canonical_record":{"source":{"id":"1407.4287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-16T12:49:35Z","cross_cats_sorted":[],"title_canon_sha256":"56a40f358059ae33812f50b40ca79035e4b8d4e87fda95ef872d4e0480afbe0d","abstract_canon_sha256":"496d92645b0b632b01e1ab6048ababecfb1bd0906ec6edd72266d12bbbd337e0"},"schema_version":"1.0"},"canonical_sha256":"13d5166add143cce5742e4184f596079b7b202509403de8886d942d8841ea4cd","source":{"kind":"arxiv","id":"1407.4287","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.4287","created_at":"2026-05-18T01:42:36Z"},{"alias_kind":"arxiv_version","alias_value":"1407.4287v1","created_at":"2026-05-18T01:42:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.4287","created_at":"2026-05-18T01:42:36Z"},{"alias_kind":"pith_short_12","alias_value":"CPKRM2W5CQ6M","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"CPKRM2W5CQ6M4V2C","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"CPKRM2W5","created_at":"2026-05-18T12:28:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:CPKRM2W5CQ6M4V2C4QME6WLAPG","target":"record","payload":{"canonical_record":{"source":{"id":"1407.4287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-16T12:49:35Z","cross_cats_sorted":[],"title_canon_sha256":"56a40f358059ae33812f50b40ca79035e4b8d4e87fda95ef872d4e0480afbe0d","abstract_canon_sha256":"496d92645b0b632b01e1ab6048ababecfb1bd0906ec6edd72266d12bbbd337e0"},"schema_version":"1.0"},"canonical_sha256":"13d5166add143cce5742e4184f596079b7b202509403de8886d942d8841ea4cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:36.223065Z","signature_b64":"970DMPD+wlBVDBBNcJdbwyQFw1Tmy4UrNEYknV1DdYvJSRnSN8pkm6YjtuAz/hHKA7DDYUbfWXqTkHr1jrimDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13d5166add143cce5742e4184f596079b7b202509403de8886d942d8841ea4cd","last_reissued_at":"2026-05-18T01:42:36.222416Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:36.222416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.4287","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":"2026-05-18T01:42:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lJDZjwmoLe6hAqWRKWKucZLXfPjCQCVHUGSXtdHrL+hn0iFpTBWK8uISmd7bsA0/2WOqen8rUn05ayfyyDNICg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:55:29.964011Z"},"content_sha256":"e4bc221c8f9f0ba49ee66f0763aaf15e9561a42390183ce299f331284d9c1503","schema_version":"1.0","event_id":"sha256:e4bc221c8f9f0ba49ee66f0763aaf15e9561a42390183ce299f331284d9c1503"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:CPKRM2W5CQ6M4V2C4QME6WLAPG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An aperture masking mode for the MICADO instrument","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Boccaletti, D. Gratadour, E. Gendron, G. Rousset, M. Hartl, P. Baudoz, R. Davies, R. Galicher, S. Lacour, T. Buey, Y. Cl\\'enet","submitted_at":"2014-07-16T12:49:35Z","abstract_excerpt":"MICADO is a near-IR camera for the Europea ELT, featuring an extended field (75\" diameter) for imaging, and also spectrographic and high contrast imaging capabilities. It has been chosen by ESO as one of the two first-light instruments. Although it is ultimately aimed at being fed by the MCAO module called MAORY, MICADO will come with an internal SCAO system that will be complementary to it and will deliver a high performance on axis correction, suitable for coronagraphic and pupil masking applications. The basis of the pupil masking approach is to ensure the stability of the optical transfer "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.4287","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":"2026-05-18T01:42:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FvYY2Ulc9PfNb4IqkmhUllj4kh5SRopNmKCFKy2puVv8H6v57R0fo+bYZZxqak3Ct5SLIFDilW/Wr/Svem61AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:55:29.964444Z"},"content_sha256":"d5bf17e04a5cc8159bdd785cb87c18c039d4ab101a9f51007066e0cc478d6ab1","schema_version":"1.0","event_id":"sha256:d5bf17e04a5cc8159bdd785cb87c18c039d4ab101a9f51007066e0cc478d6ab1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG/bundle.json","state_url":"https://pith.science/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG/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":"2026-05-26T11:55:29Z","links":{"resolver":"https://pith.science/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG","bundle":"https://pith.science/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG/bundle.json","state":"https://pith.science/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CPKRM2W5CQ6M4V2C4QME6WLAPG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CPKRM2W5CQ6M4V2C4QME6WLAPG","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":"496d92645b0b632b01e1ab6048ababecfb1bd0906ec6edd72266d12bbbd337e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-16T12:49:35Z","title_canon_sha256":"56a40f358059ae33812f50b40ca79035e4b8d4e87fda95ef872d4e0480afbe0d"},"schema_version":"1.0","source":{"id":"1407.4287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.4287","created_at":"2026-05-18T01:42:36Z"},{"alias_kind":"arxiv_version","alias_value":"1407.4287v1","created_at":"2026-05-18T01:42:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.4287","created_at":"2026-05-18T01:42:36Z"},{"alias_kind":"pith_short_12","alias_value":"CPKRM2W5CQ6M","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"CPKRM2W5CQ6M4V2C","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"CPKRM2W5","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:d5bf17e04a5cc8159bdd785cb87c18c039d4ab101a9f51007066e0cc478d6ab1","target":"graph","created_at":"2026-05-18T01:42:36Z","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":"MICADO is a near-IR camera for the Europea ELT, featuring an extended field (75\" diameter) for imaging, and also spectrographic and high contrast imaging capabilities. It has been chosen by ESO as one of the two first-light instruments. Although it is ultimately aimed at being fed by the MCAO module called MAORY, MICADO will come with an internal SCAO system that will be complementary to it and will deliver a high performance on axis correction, suitable for coronagraphic and pupil masking applications. The basis of the pupil masking approach is to ensure the stability of the optical transfer ","authors_text":"A. Boccaletti, D. Gratadour, E. Gendron, G. Rousset, M. Hartl, P. Baudoz, R. Davies, R. Galicher, S. Lacour, T. Buey, Y. Cl\\'enet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-16T12:49:35Z","title":"An aperture masking mode for the MICADO instrument"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.4287","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:e4bc221c8f9f0ba49ee66f0763aaf15e9561a42390183ce299f331284d9c1503","target":"record","created_at":"2026-05-18T01:42:36Z","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":"496d92645b0b632b01e1ab6048ababecfb1bd0906ec6edd72266d12bbbd337e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-16T12:49:35Z","title_canon_sha256":"56a40f358059ae33812f50b40ca79035e4b8d4e87fda95ef872d4e0480afbe0d"},"schema_version":"1.0","source":{"id":"1407.4287","kind":"arxiv","version":1}},"canonical_sha256":"13d5166add143cce5742e4184f596079b7b202509403de8886d942d8841ea4cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13d5166add143cce5742e4184f596079b7b202509403de8886d942d8841ea4cd","first_computed_at":"2026-05-18T01:42:36.222416Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:36.222416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"970DMPD+wlBVDBBNcJdbwyQFw1Tmy4UrNEYknV1DdYvJSRnSN8pkm6YjtuAz/hHKA7DDYUbfWXqTkHr1jrimDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:36.223065Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.4287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e4bc221c8f9f0ba49ee66f0763aaf15e9561a42390183ce299f331284d9c1503","sha256:d5bf17e04a5cc8159bdd785cb87c18c039d4ab101a9f51007066e0cc478d6ab1"],"state_sha256":"e60131fdc48fc6cbd1fc7dd7fccb3267ef1778b51fd9bcf26528f121dedb6d3a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"csG6/gEGdh16aHWhC3OBE/JHAxfu6TuJEJg6iag4CS+9/ju+2xT+PT5ivq5bLOV0RcD6CsJjwv/2rdoQMqtcCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:55:29.966721Z","bundle_sha256":"ecf84d59fe79033aa24c42ad482f28c71851891f9689cb32d88dbd8f99c23e36"}}