{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ODZLTE7GNVFEVOU24EUE47JRXR","short_pith_number":"pith:ODZLTE7G","canonical_record":{"source":{"id":"2607.25940","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-28T16:25:16Z","cross_cats_sorted":[],"title_canon_sha256":"4e958633183dfa3be2d317533a10a15fe7f75d9915ea54002da63d83ba485220","abstract_canon_sha256":"d88d6067ed859e8f4699aee5e09feaec8375884625ffa73b1a66d92e0ad605f1"},"schema_version":"1.0"},"canonical_sha256":"70f2b993e66d4a4aba9ae1284e7d31bc5233432cf63f8fe2956c07349cd7f6ec","source":{"kind":"arxiv","id":"2607.25940","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.25940","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"2607.25940v1","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.25940","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"ODZLTE7GNVFE","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"ODZLTE7GNVFEVOU2","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"ODZLTE7G","created_at":"2026-07-29T01:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ODZLTE7GNVFEVOU24EUE47JRXR","target":"record","payload":{"canonical_record":{"source":{"id":"2607.25940","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-28T16:25:16Z","cross_cats_sorted":[],"title_canon_sha256":"4e958633183dfa3be2d317533a10a15fe7f75d9915ea54002da63d83ba485220","abstract_canon_sha256":"d88d6067ed859e8f4699aee5e09feaec8375884625ffa73b1a66d92e0ad605f1"},"schema_version":"1.0"},"canonical_sha256":"70f2b993e66d4a4aba9ae1284e7d31bc5233432cf63f8fe2956c07349cd7f6ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-29T01:26:12.226888Z","signature_b64":"hInjWqa7hmQ5sEg38SfZJqoxyXMFKvEfZzDsSdZcNVDw5rDwbI/3VbbJWWctpBahWH0oM5xAb3HTrMQZDySHAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70f2b993e66d4a4aba9ae1284e7d31bc5233432cf63f8fe2956c07349cd7f6ec","last_reissued_at":"2026-07-29T01:26:12.226059Z","signature_status":"signed_v1","first_computed_at":"2026-07-29T01:26:12.226059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.25940","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":"2026-07-29T01:26:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IrtOPH4PbYTNxnPE+FCtzyUt06RGjF3wRUtUzb2uAgG/dNaQEXDWoW1Nk1PBAWnWfn1SLrOULPUCp+XTYBQwAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:49:33.973376Z"},"content_sha256":"46df4340bdddb3925df54bb9ec40929fc09635f0c1d9c3f3f8b91cb6a97e411f","schema_version":"1.0","event_id":"sha256:46df4340bdddb3925df54bb9ec40929fc09635f0c1d9c3f3f8b91cb6a97e411f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ODZLTE7GNVFEVOU24EUE47JRXR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CNN-Based Reanalysis of Optical Turbulence at the Canary Islands Observatories (OCAN)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Airam Salas, Bego\\~na Garc\\'ia-Lorenzo, Gelys Trancho, Julio A. Castro-Almaz\\'an","submitted_at":"2026-07-28T16:25:16Z","abstract_excerpt":"Atmospheric optical turbulence, caused by refractive-index fluctuations driven by wind and temperature inhomogeneities, is the primary source of image degradation in ground-based telescopes. Its vertical distribution, described by the refractive-index structure constant (Cn2(h)), determines essential parameters such as seeing, isoplanatic angle, and coherence time, which characterize astronomical sites and are also crucial for the design and performance of high-resolution instruments. The Observatorios de Canarias (OCAN), comprising the Observatorio del Roque de los Muchachos on La Palma and t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.25940","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/2607.25940/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":"2026-07-29T01:26:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3k02Tg/DBvDLN6jVa9FcGT0nulrJ1SJ6zuHqanmTF6OutUTnY8f22jgUMMRa78lLVf2avvMIEEqPHLbO965tAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:49:33.973925Z"},"content_sha256":"6cb663f9eabd6acdc0358abb205a94318ea3815372a24d36b6d40a037e8438fc","schema_version":"1.0","event_id":"sha256:6cb663f9eabd6acdc0358abb205a94318ea3815372a24d36b6d40a037e8438fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODZLTE7GNVFEVOU24EUE47JRXR/bundle.json","state_url":"https://pith.science/pith/ODZLTE7GNVFEVOU24EUE47JRXR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODZLTE7GNVFEVOU24EUE47JRXR/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":"2026-08-18T22:49:33Z","links":{"resolver":"https://pith.science/pith/ODZLTE7GNVFEVOU24EUE47JRXR","bundle":"https://pith.science/pith/ODZLTE7GNVFEVOU24EUE47JRXR/bundle.json","state":"https://pith.science/pith/ODZLTE7GNVFEVOU24EUE47JRXR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODZLTE7GNVFEVOU24EUE47JRXR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ODZLTE7GNVFEVOU24EUE47JRXR","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":"d88d6067ed859e8f4699aee5e09feaec8375884625ffa73b1a66d92e0ad605f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-28T16:25:16Z","title_canon_sha256":"4e958633183dfa3be2d317533a10a15fe7f75d9915ea54002da63d83ba485220"},"schema_version":"1.0","source":{"id":"2607.25940","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.25940","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"2607.25940v1","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.25940","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"ODZLTE7GNVFE","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"ODZLTE7GNVFEVOU2","created_at":"2026-07-29T01:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"ODZLTE7G","created_at":"2026-07-29T01:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:6cb663f9eabd6acdc0358abb205a94318ea3815372a24d36b6d40a037e8438fc","target":"graph","created_at":"2026-07-29T01:26:12Z","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/2607.25940/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Atmospheric optical turbulence, caused by refractive-index fluctuations driven by wind and temperature inhomogeneities, is the primary source of image degradation in ground-based telescopes. Its vertical distribution, described by the refractive-index structure constant (Cn2(h)), determines essential parameters such as seeing, isoplanatic angle, and coherence time, which characterize astronomical sites and are also crucial for the design and performance of high-resolution instruments. The Observatorios de Canarias (OCAN), comprising the Observatorio del Roque de los Muchachos on La Palma and t","authors_text":"Airam Salas, Bego\\~na Garc\\'ia-Lorenzo, Gelys Trancho, Julio A. Castro-Almaz\\'an","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-28T16:25:16Z","title":"CNN-Based Reanalysis of Optical Turbulence at the Canary Islands Observatories (OCAN)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.25940","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":"sha256:46df4340bdddb3925df54bb9ec40929fc09635f0c1d9c3f3f8b91cb6a97e411f","target":"record","created_at":"2026-07-29T01:26:12Z","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":"d88d6067ed859e8f4699aee5e09feaec8375884625ffa73b1a66d92e0ad605f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-28T16:25:16Z","title_canon_sha256":"4e958633183dfa3be2d317533a10a15fe7f75d9915ea54002da63d83ba485220"},"schema_version":"1.0","source":{"id":"2607.25940","kind":"arxiv","version":1}},"canonical_sha256":"70f2b993e66d4a4aba9ae1284e7d31bc5233432cf63f8fe2956c07349cd7f6ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70f2b993e66d4a4aba9ae1284e7d31bc5233432cf63f8fe2956c07349cd7f6ec","first_computed_at":"2026-07-29T01:26:12.226059Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-29T01:26:12.226059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hInjWqa7hmQ5sEg38SfZJqoxyXMFKvEfZzDsSdZcNVDw5rDwbI/3VbbJWWctpBahWH0oM5xAb3HTrMQZDySHAw==","signature_status":"signed_v1","signed_at":"2026-07-29T01:26:12.226888Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.25940","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46df4340bdddb3925df54bb9ec40929fc09635f0c1d9c3f3f8b91cb6a97e411f","sha256:6cb663f9eabd6acdc0358abb205a94318ea3815372a24d36b6d40a037e8438fc"],"state_sha256":"d475c49a7f13b1a6953165f24065dde9d3a59f41d90d5d95b0476175595a501d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ben4qk9l2+4ZGb2Ppyhx1MDpgEfP5REuvyUFYiLDl2n9PyvtrM3OhohbclvgfrSgiLdwo8bXQaUgKAV9SBTJCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T22:49:33.977382Z","bundle_sha256":"05501734e433bb4cbd2609088d975789c8bd98941a414237715c97257e6fd6fe"}}