{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:XM4XFC2F3NZF52ODROQHFYEH22","short_pith_number":"pith:XM4XFC2F","canonical_record":{"source":{"id":"2605.16573","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2026-05-15T19:24:31Z","cross_cats_sorted":["cs.AI","physics.flu-dyn"],"title_canon_sha256":"b0c27a77f2bfd48df54171868564b8ba71d2359bbee2b4fe853145b60958e035","abstract_canon_sha256":"e14e1756907143962c6b9fd8611baf7c3a8b7e740cd38358890435bba9492782"},"schema_version":"1.0"},"canonical_sha256":"bb39728b45db725ee9c38ba072e087d68d2a914075f87e24017274363bedea7a","source":{"kind":"arxiv","id":"2605.16573","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.16573","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"arxiv_version","alias_value":"2605.16573v1","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.16573","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"pith_short_12","alias_value":"XM4XFC2F3NZF","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"pith_short_16","alias_value":"XM4XFC2F3NZF52OD","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"pith_short_8","alias_value":"XM4XFC2F","created_at":"2026-05-20T00:02:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:XM4XFC2F3NZF52ODROQHFYEH22","target":"record","payload":{"canonical_record":{"source":{"id":"2605.16573","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2026-05-15T19:24:31Z","cross_cats_sorted":["cs.AI","physics.flu-dyn"],"title_canon_sha256":"b0c27a77f2bfd48df54171868564b8ba71d2359bbee2b4fe853145b60958e035","abstract_canon_sha256":"e14e1756907143962c6b9fd8611baf7c3a8b7e740cd38358890435bba9492782"},"schema_version":"1.0"},"canonical_sha256":"bb39728b45db725ee9c38ba072e087d68d2a914075f87e24017274363bedea7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:02:30.445086Z","signature_b64":"0ZLai2+xV87/0e9bY4Uy8Gn6wT57yWZuP+ObXMMJQG4dFIU0o5yvj6bT9UZlMHDnthmxfTqm72jHh7u2s9oUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb39728b45db725ee9c38ba072e087d68d2a914075f87e24017274363bedea7a","last_reissued_at":"2026-05-20T00:02:30.444168Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:02:30.444168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.16573","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":"2026-05-20T00:02:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qGTUmHeeGFZocrVyUUpLJt2wANg/P98lfKQZTk2dyGVkW+81M0OGhdBrUAoW6a1U1VIAIHgrBoS6WiXUWqO6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:27:43.131786Z"},"content_sha256":"afcfa806bb225be29474ef7bf55f7ec4518fd582f371a84e34ca4f6621d6eade","schema_version":"1.0","event_id":"sha256:afcfa806bb225be29474ef7bf55f7ec4518fd582f371a84e34ca4f6621d6eade"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:XM4XFC2F3NZF52ODROQHFYEH22","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Wavelet Flow Matching for Multi-Scale Physics Emulation","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.AI","physics.flu-dyn"],"primary_cat":"cs.LG","authors_text":"Carla Roesch, Duncan Watson-Parris, Gabriele Accarino, Juan Nathaniel, Pierre Gentine, Sara Shamekh, Viviana Acquaviva","submitted_at":"2026-05-15T19:24:31Z","abstract_excerpt":"Accurate emulation of multi-scale physical systems governed by PDEs demands models that remain stable over long autoregressive rollouts while preserving fine-scale structures. Deterministic emulators produce overly-smoothed predictions, while generative approaches better capture details but are costly. Latent-space generative models have emerged as a compromise but with the additional cost of separately pre-trained autoencoders. We propose Wavelet Flow Matching (WFM), a novel generative emulator that overcomes current trade-offs between cost and skill by performing optimal-transport directly i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.16573","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/2605.16573/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-19T19:21:56.863960Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T18:33:26.618643Z","status":"skipped","version":"1.0.0","findings_count":0}],"snapshot_sha256":"a3c8ee469bfa2f798218e85fcada71b394736ec9df2aca349cb48e1f548010e2"},"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":"2026-05-20T00:02:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jYDTNpXxS/sPjffklSWdv3V6vpKe4EKn6JEvfzO3G8N0hcwREFZd5sopGuF/q0qtlIzcDDyTMilK/bAOBHFTCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:27:43.132661Z"},"content_sha256":"afe4c40dd5338918bd1533045048fd42c5ffb04d5b59ccdd4d689d668de1d776","schema_version":"1.0","event_id":"sha256:afe4c40dd5338918bd1533045048fd42c5ffb04d5b59ccdd4d689d668de1d776"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XM4XFC2F3NZF52ODROQHFYEH22/bundle.json","state_url":"https://pith.science/pith/XM4XFC2F3NZF52ODROQHFYEH22/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XM4XFC2F3NZF52ODROQHFYEH22/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":"2026-05-25T18:27:43Z","links":{"resolver":"https://pith.science/pith/XM4XFC2F3NZF52ODROQHFYEH22","bundle":"https://pith.science/pith/XM4XFC2F3NZF52ODROQHFYEH22/bundle.json","state":"https://pith.science/pith/XM4XFC2F3NZF52ODROQHFYEH22/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XM4XFC2F3NZF52ODROQHFYEH22/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:XM4XFC2F3NZF52ODROQHFYEH22","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":"e14e1756907143962c6b9fd8611baf7c3a8b7e740cd38358890435bba9492782","cross_cats_sorted":["cs.AI","physics.flu-dyn"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2026-05-15T19:24:31Z","title_canon_sha256":"b0c27a77f2bfd48df54171868564b8ba71d2359bbee2b4fe853145b60958e035"},"schema_version":"1.0","source":{"id":"2605.16573","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.16573","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"arxiv_version","alias_value":"2605.16573v1","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.16573","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"pith_short_12","alias_value":"XM4XFC2F3NZF","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"pith_short_16","alias_value":"XM4XFC2F3NZF52OD","created_at":"2026-05-20T00:02:30Z"},{"alias_kind":"pith_short_8","alias_value":"XM4XFC2F","created_at":"2026-05-20T00:02:30Z"}],"graph_snapshots":[{"event_id":"sha256:afe4c40dd5338918bd1533045048fd42c5ffb04d5b59ccdd4d689d668de1d776","target":"graph","created_at":"2026-05-20T00:02:30Z","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":[{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T19:21:56.863960Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T18:33:26.618643Z","status":"skipped","version":"1.0.0"}],"endpoint":"/pith/2605.16573/integrity.json","findings":[],"snapshot_sha256":"a3c8ee469bfa2f798218e85fcada71b394736ec9df2aca349cb48e1f548010e2","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate emulation of multi-scale physical systems governed by PDEs demands models that remain stable over long autoregressive rollouts while preserving fine-scale structures. Deterministic emulators produce overly-smoothed predictions, while generative approaches better capture details but are costly. Latent-space generative models have emerged as a compromise but with the additional cost of separately pre-trained autoencoders. We propose Wavelet Flow Matching (WFM), a novel generative emulator that overcomes current trade-offs between cost and skill by performing optimal-transport directly i","authors_text":"Carla Roesch, Duncan Watson-Parris, Gabriele Accarino, Juan Nathaniel, Pierre Gentine, Sara Shamekh, Viviana Acquaviva","cross_cats":["cs.AI","physics.flu-dyn"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2026-05-15T19:24:31Z","title":"Wavelet Flow Matching for Multi-Scale Physics Emulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.16573","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:afcfa806bb225be29474ef7bf55f7ec4518fd582f371a84e34ca4f6621d6eade","target":"record","created_at":"2026-05-20T00:02:30Z","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":"e14e1756907143962c6b9fd8611baf7c3a8b7e740cd38358890435bba9492782","cross_cats_sorted":["cs.AI","physics.flu-dyn"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2026-05-15T19:24:31Z","title_canon_sha256":"b0c27a77f2bfd48df54171868564b8ba71d2359bbee2b4fe853145b60958e035"},"schema_version":"1.0","source":{"id":"2605.16573","kind":"arxiv","version":1}},"canonical_sha256":"bb39728b45db725ee9c38ba072e087d68d2a914075f87e24017274363bedea7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb39728b45db725ee9c38ba072e087d68d2a914075f87e24017274363bedea7a","first_computed_at":"2026-05-20T00:02:30.444168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:02:30.444168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0ZLai2+xV87/0e9bY4Uy8Gn6wT57yWZuP+ObXMMJQG4dFIU0o5yvj6bT9UZlMHDnthmxfTqm72jHh7u2s9oUDw==","signature_status":"signed_v1","signed_at":"2026-05-20T00:02:30.445086Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.16573","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:afcfa806bb225be29474ef7bf55f7ec4518fd582f371a84e34ca4f6621d6eade","sha256:afe4c40dd5338918bd1533045048fd42c5ffb04d5b59ccdd4d689d668de1d776"],"state_sha256":"2f189dbaf7dae5bd4b72a9598dc0d6fc112960714e8d5169cf26defc5e9d5dcc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kYSiYI3f8jykGs+RlW5OeZXc408EnPdo2TtLw6k9zLI3Q7+BJ4VmdBU9lHxghz+F2VvI4mUIfyfiENiBhf7vAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:27:43.136901Z","bundle_sha256":"ab5568b2fe86cf592b19fcd16ab73ae81bfde46677925041b35a482ca8560b78"}}