{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:M7R4CTHCJDGZBDDHOP4XKCPYLB","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":"a3e3b8de23cb78130cf575a80b526c81f8a512767ee161fbec59441093abfe91","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CE","submitted_at":"2026-04-16T20:00:24Z","title_canon_sha256":"d264a9eb69200694891e1fa8607adcafd7249c8a50024c3c5cd332c825d457b7"},"schema_version":"1.0","source":{"id":"2606.02583","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02583","created_at":"2026-06-03T00:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02583v1","created_at":"2026-06-03T00:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02583","created_at":"2026-06-03T00:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"M7R4CTHCJDGZ","created_at":"2026-06-03T00:05:03Z"},{"alias_kind":"pith_short_16","alias_value":"M7R4CTHCJDGZBDDH","created_at":"2026-06-03T00:05:03Z"},{"alias_kind":"pith_short_8","alias_value":"M7R4CTHC","created_at":"2026-06-03T00:05:03Z"}],"graph_snapshots":[{"event_id":"sha256:635e2708368bcf41f503c85b94a9b290c43100f74e3be93dee40a6346bc0ee9c","target":"graph","created_at":"2026-06-03T00:05:03Z","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/2606.02583/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a complete workflow for predicting stone degradation phenomena, such as marble sulfation, in works of art. The main challenge is to accurately acquire the geometry of the artwork and then use it to perform simulations based on a mathematical model of the degradation process, typically formulated as a system of partial differential equations (PDEs).\n  To address this, we generate a point cloud of the object surface using photogrammetric techniques and subsequently post-process it to obtain a level-set description of the three-dimensional geometry. This representation is then incorpor","authors_text":"Bruno Nazarena, Francesco Freddi, Gabriella Bretti, Matteo Semplice, Silvia Preda","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CE","submitted_at":"2026-04-16T20:00:24Z","title":"A complete simulation framework for stone degradation on 3D real geometries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02583","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":"sha256:1c46f0542c36fd89d3a75e0c1acb1827febec13952e2c3da9f8877141ca4f75b","target":"record","created_at":"2026-06-03T00:05:03Z","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":"a3e3b8de23cb78130cf575a80b526c81f8a512767ee161fbec59441093abfe91","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CE","submitted_at":"2026-04-16T20:00:24Z","title_canon_sha256":"d264a9eb69200694891e1fa8607adcafd7249c8a50024c3c5cd332c825d457b7"},"schema_version":"1.0","source":{"id":"2606.02583","kind":"arxiv","version":1}},"canonical_sha256":"67e3c14ce248cd908c6773f97509f8585377dcaece7c8a6c964867b1df0c4c05","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67e3c14ce248cd908c6773f97509f8585377dcaece7c8a6c964867b1df0c4c05","first_computed_at":"2026-06-03T00:05:03.770824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T00:05:03.770824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QHKOsWTGbTOYY5/d9Wb6YmVMx9qI2VPvCkbIsv0JfT88Rtq8mpppNUB/FaoOBroLFeFsa3RGNnLYEZrVBo93Dw==","signature_status":"signed_v1","signed_at":"2026-06-03T00:05:03.771325Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.02583","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c46f0542c36fd89d3a75e0c1acb1827febec13952e2c3da9f8877141ca4f75b","sha256:635e2708368bcf41f503c85b94a9b290c43100f74e3be93dee40a6346bc0ee9c"],"state_sha256":"40103c2ab2ef0b11ab0b044abbaf0e79139b17dab77176d5b278840685a66c7c"}