{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:7REVHTSY6AULTP6EW4AEN4WDJ3","short_pith_number":"pith:7REVHTSY","canonical_record":{"source":{"id":"2103.11376","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-03-21T12:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"572ec286cea4ae9987435f7caa674610c3840041c9ee447fd94eac26c1e824a5","abstract_canon_sha256":"8bd7d679c8e62c7572892913095e3dc8b2e635c55900bec6c89ca2cef582c44e"},"schema_version":"1.0"},"canonical_sha256":"fc4953ce58f028b9bfc4b70046f2c34ef864f1ecf0d2c036e0a26b6dfa0e553c","source":{"kind":"arxiv","id":"2103.11376","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.11376","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"arxiv_version","alias_value":"2103.11376v1","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.11376","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"pith_short_12","alias_value":"7REVHTSY6AUL","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"pith_short_16","alias_value":"7REVHTSY6AULTP6E","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"pith_short_8","alias_value":"7REVHTSY","created_at":"2026-07-05T02:24:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:7REVHTSY6AULTP6EW4AEN4WDJ3","target":"record","payload":{"canonical_record":{"source":{"id":"2103.11376","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-03-21T12:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"572ec286cea4ae9987435f7caa674610c3840041c9ee447fd94eac26c1e824a5","abstract_canon_sha256":"8bd7d679c8e62c7572892913095e3dc8b2e635c55900bec6c89ca2cef582c44e"},"schema_version":"1.0"},"canonical_sha256":"fc4953ce58f028b9bfc4b70046f2c34ef864f1ecf0d2c036e0a26b6dfa0e553c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:24:59.784336Z","signature_b64":"EIhTQg8E/VoBLMlEmMFTXCz3q2k62tM9b9hSr9DrXG9+ULzu4PBjEO57KkISJfyrHEk8F9l5RPefg9CTDW6tCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc4953ce58f028b9bfc4b70046f2c34ef864f1ecf0d2c036e0a26b6dfa0e553c","last_reissued_at":"2026-07-05T02:24:59.783882Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:24:59.783882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.11376","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":"2026-07-05T02:24:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WufUXvrvd22oD5RYFsdlG5ec3RaNmeGuW33ZXWP8HHBBt69YjHf8vbs4seO7vlJ+DoVBVACToJe/tYkKfVUhDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:44:15.152145Z"},"content_sha256":"b600550d620fa110a572db5cf803ee18d70320ecee27eac59b4c9ad01de42fb7","schema_version":"1.0","event_id":"sha256:b600550d620fa110a572db5cf803ee18d70320ecee27eac59b4c9ad01de42fb7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:7REVHTSY6AULTP6EW4AEN4WDJ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Instrumentation for ESO's Extremely Large Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Antonio Manescau, Celine Peroux, Christian Schmid, Christoph Haupt, Derek Ives, Elizabeth George, Florian Kerber, Frederic Derie, Frederic Gonte, Gerd Jakob, Joel Vernet, Michele Cirasuolo, Nagaraja Naidu Bezawada, Oliver Pfuhl, Paola Amico, Patrick Caillier, Peter Hammersley, Ralf Siebenmorgen, Reinhold Dorn, Sebastian Egner, Suzanne Ramsay, Sylvain Oberti, Ulf Seemann, Vincenzo Mainieri","submitted_at":"2021-03-21T12:04:05Z","abstract_excerpt":"Design and construction of the instruments for ESO's Extremely Large Telescope (ELT) began in 2015. We present here a brief overview of the status of the ELT Instrumentation Plan. Dedicated articles on each instrument are presented elsewhere this volume."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.11376","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.11376/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:24:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TQ9hFjI1prk6M33FVXcZbUab6TcTKnjOdxTkg4D3iptcqXZUO9/5bA7+uIHaalnSRk5eZmTr82rUt+raJk2RBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:44:15.152531Z"},"content_sha256":"1e01f7995341395846e1f81fb4b5fdd9ff29e262aeccd88daf5ef2486b247141","schema_version":"1.0","event_id":"sha256:1e01f7995341395846e1f81fb4b5fdd9ff29e262aeccd88daf5ef2486b247141"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7REVHTSY6AULTP6EW4AEN4WDJ3/bundle.json","state_url":"https://pith.science/pith/7REVHTSY6AULTP6EW4AEN4WDJ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7REVHTSY6AULTP6EW4AEN4WDJ3/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":"2026-07-07T14:44:15Z","links":{"resolver":"https://pith.science/pith/7REVHTSY6AULTP6EW4AEN4WDJ3","bundle":"https://pith.science/pith/7REVHTSY6AULTP6EW4AEN4WDJ3/bundle.json","state":"https://pith.science/pith/7REVHTSY6AULTP6EW4AEN4WDJ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7REVHTSY6AULTP6EW4AEN4WDJ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:7REVHTSY6AULTP6EW4AEN4WDJ3","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":"8bd7d679c8e62c7572892913095e3dc8b2e635c55900bec6c89ca2cef582c44e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-03-21T12:04:05Z","title_canon_sha256":"572ec286cea4ae9987435f7caa674610c3840041c9ee447fd94eac26c1e824a5"},"schema_version":"1.0","source":{"id":"2103.11376","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.11376","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"arxiv_version","alias_value":"2103.11376v1","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.11376","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"pith_short_12","alias_value":"7REVHTSY6AUL","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"pith_short_16","alias_value":"7REVHTSY6AULTP6E","created_at":"2026-07-05T02:24:59Z"},{"alias_kind":"pith_short_8","alias_value":"7REVHTSY","created_at":"2026-07-05T02:24:59Z"}],"graph_snapshots":[{"event_id":"sha256:1e01f7995341395846e1f81fb4b5fdd9ff29e262aeccd88daf5ef2486b247141","target":"graph","created_at":"2026-07-05T02:24:59Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2103.11376/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Design and construction of the instruments for ESO's Extremely Large Telescope (ELT) began in 2015. We present here a brief overview of the status of the ELT Instrumentation Plan. Dedicated articles on each instrument are presented elsewhere this volume.","authors_text":"Antonio Manescau, Celine Peroux, Christian Schmid, Christoph Haupt, Derek Ives, Elizabeth George, Florian Kerber, Frederic Derie, Frederic Gonte, Gerd Jakob, Joel Vernet, Michele Cirasuolo, Nagaraja Naidu Bezawada, Oliver Pfuhl, Paola Amico, Patrick Caillier, Peter Hammersley, Ralf Siebenmorgen, Reinhold Dorn, Sebastian Egner, Suzanne Ramsay, Sylvain Oberti, Ulf Seemann, Vincenzo Mainieri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-03-21T12:04:05Z","title":"Instrumentation for ESO's Extremely Large Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.11376","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:b600550d620fa110a572db5cf803ee18d70320ecee27eac59b4c9ad01de42fb7","target":"record","created_at":"2026-07-05T02:24:59Z","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":"8bd7d679c8e62c7572892913095e3dc8b2e635c55900bec6c89ca2cef582c44e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-03-21T12:04:05Z","title_canon_sha256":"572ec286cea4ae9987435f7caa674610c3840041c9ee447fd94eac26c1e824a5"},"schema_version":"1.0","source":{"id":"2103.11376","kind":"arxiv","version":1}},"canonical_sha256":"fc4953ce58f028b9bfc4b70046f2c34ef864f1ecf0d2c036e0a26b6dfa0e553c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc4953ce58f028b9bfc4b70046f2c34ef864f1ecf0d2c036e0a26b6dfa0e553c","first_computed_at":"2026-07-05T02:24:59.783882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:24:59.783882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EIhTQg8E/VoBLMlEmMFTXCz3q2k62tM9b9hSr9DrXG9+ULzu4PBjEO57KkISJfyrHEk8F9l5RPefg9CTDW6tCA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:24:59.784336Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.11376","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b600550d620fa110a572db5cf803ee18d70320ecee27eac59b4c9ad01de42fb7","sha256:1e01f7995341395846e1f81fb4b5fdd9ff29e262aeccd88daf5ef2486b247141"],"state_sha256":"d1982553de1f17b18f5777809186c6a1e64a405291d5c9038f49fea9665f20e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jgnHol7B6xJX2IuKdaukIQfkk1xBnylHw9/3isEqIKVVi23MUCCpXdzZ+twh3hg7z4v1KTjHxdxNU4LSepQBCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T14:44:15.154381Z","bundle_sha256":"aa0a8418c414adb53843db13d735078cea041f4363284c4bce6feaebf850cb30"}}