{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MM3MVRF3IOWXW3QGIMUXO7WMUF","short_pith_number":"pith:MM3MVRF3","canonical_record":{"source":{"id":"2601.18163","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-01-26T05:30:01Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"b5c6219e8c57aea4c0ba75a88a520f91640489defc38f187dc161787a7985d1a","abstract_canon_sha256":"86a9ca04007d635b88307744bac2f57f220bf4d9091b8ab18441c62dfb21cc3f"},"schema_version":"1.0"},"canonical_sha256":"6336cac4bb43ad7b6e064329777ecca1730d587af22814d331c33d9878786a53","source":{"kind":"arxiv","id":"2601.18163","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.18163","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"2601.18163v2","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.18163","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"MM3MVRF3IOWX","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"pith_short_16","alias_value":"MM3MVRF3IOWXW3QG","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"pith_short_8","alias_value":"MM3MVRF3","created_at":"2026-05-27T01:04:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MM3MVRF3IOWXW3QGIMUXO7WMUF","target":"record","payload":{"canonical_record":{"source":{"id":"2601.18163","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-01-26T05:30:01Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"b5c6219e8c57aea4c0ba75a88a520f91640489defc38f187dc161787a7985d1a","abstract_canon_sha256":"86a9ca04007d635b88307744bac2f57f220bf4d9091b8ab18441c62dfb21cc3f"},"schema_version":"1.0"},"canonical_sha256":"6336cac4bb43ad7b6e064329777ecca1730d587af22814d331c33d9878786a53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T01:04:55.277702Z","signature_b64":"UT8kvV9hDzuncunG+6oOCy8YXz0j1XHvCLvRSQl1q4EYGqw7lsxoNjho19gH8p8hTeow7kA1whddH3NAP+asAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6336cac4bb43ad7b6e064329777ecca1730d587af22814d331c33d9878786a53","last_reissued_at":"2026-05-27T01:04:55.275651Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T01:04:55.275651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2601.18163","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-27T01:04:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uxfb8UHkRxbio5bAXKtXgth3nr+ihgtRndlb/qzb2FL7aT0sZ3VpmIFvBbA1SJFYz7hWOjsaQ5S8A7NoqLI3AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T05:26:24.007910Z"},"content_sha256":"ba51cc0cc5726b48120f1a67947c99a1ad484fe3c51d70c053699dd7333c44cc","schema_version":"1.0","event_id":"sha256:ba51cc0cc5726b48120f1a67947c99a1ad484fe3c51d70c053699dd7333c44cc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MM3MVRF3IOWXW3QGIMUXO7WMUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AI-based separation of turbulence from coherent background flows in decaying hydrodynamic turbulence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.flu-dyn","authors_text":"Elena S. Volnova, Ji-Hoon Ha","submitted_at":"2026-01-26T05:30:01Z","abstract_excerpt":"Separating turbulent fluctuations from coherent large-scale background flows is a longstanding challenge in the analysis of numerical simulations and astronomical observations. Traditional approaches commonly rely on decomposition-based techniques such as Fourier or wavelet filtering, which assume that a meaningful separation can be achieved through scale selection. In realistic flows, however, coherent motions and turbulence often overlap across a broad range of scales and interact nonlinearly, making a unique separation inherently ambiguous. In this work, we investigate the robustness of an "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.18163","kind":"arxiv","version":2},"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/2601.18163/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":"2026-05-27T01:04:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h2ydInWDpmi8PFJiEcq+jvMAOwclRR2gF48m9FEE3EMr0aOSbRlFoQY6pr+LHOTdT7xbcgy6VHzHnAf5yThXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T05:26:24.008535Z"},"content_sha256":"d7502a75ac488ca72e3a9e6ffc845a5e9a5713795a7ee82e47d750622f90d67c","schema_version":"1.0","event_id":"sha256:d7502a75ac488ca72e3a9e6ffc845a5e9a5713795a7ee82e47d750622f90d67c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF/bundle.json","state_url":"https://pith.science/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF/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":"2026-08-11T05:26:24Z","links":{"resolver":"https://pith.science/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF","bundle":"https://pith.science/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF/bundle.json","state":"https://pith.science/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MM3MVRF3IOWXW3QGIMUXO7WMUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MM3MVRF3IOWXW3QGIMUXO7WMUF","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":"86a9ca04007d635b88307744bac2f57f220bf4d9091b8ab18441c62dfb21cc3f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-01-26T05:30:01Z","title_canon_sha256":"b5c6219e8c57aea4c0ba75a88a520f91640489defc38f187dc161787a7985d1a"},"schema_version":"1.0","source":{"id":"2601.18163","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.18163","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"2601.18163v2","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.18163","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"MM3MVRF3IOWX","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"pith_short_16","alias_value":"MM3MVRF3IOWXW3QG","created_at":"2026-05-27T01:04:55Z"},{"alias_kind":"pith_short_8","alias_value":"MM3MVRF3","created_at":"2026-05-27T01:04:55Z"}],"graph_snapshots":[{"event_id":"sha256:d7502a75ac488ca72e3a9e6ffc845a5e9a5713795a7ee82e47d750622f90d67c","target":"graph","created_at":"2026-05-27T01:04:55Z","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/2601.18163/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Separating turbulent fluctuations from coherent large-scale background flows is a longstanding challenge in the analysis of numerical simulations and astronomical observations. Traditional approaches commonly rely on decomposition-based techniques such as Fourier or wavelet filtering, which assume that a meaningful separation can be achieved through scale selection. In realistic flows, however, coherent motions and turbulence often overlap across a broad range of scales and interact nonlinearly, making a unique separation inherently ambiguous. In this work, we investigate the robustness of an ","authors_text":"Elena S. Volnova, Ji-Hoon Ha","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-01-26T05:30:01Z","title":"AI-based separation of turbulence from coherent background flows in decaying hydrodynamic turbulence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.18163","kind":"arxiv","version":2},"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:ba51cc0cc5726b48120f1a67947c99a1ad484fe3c51d70c053699dd7333c44cc","target":"record","created_at":"2026-05-27T01:04:55Z","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":"86a9ca04007d635b88307744bac2f57f220bf4d9091b8ab18441c62dfb21cc3f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-01-26T05:30:01Z","title_canon_sha256":"b5c6219e8c57aea4c0ba75a88a520f91640489defc38f187dc161787a7985d1a"},"schema_version":"1.0","source":{"id":"2601.18163","kind":"arxiv","version":2}},"canonical_sha256":"6336cac4bb43ad7b6e064329777ecca1730d587af22814d331c33d9878786a53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6336cac4bb43ad7b6e064329777ecca1730d587af22814d331c33d9878786a53","first_computed_at":"2026-05-27T01:04:55.275651Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:04:55.275651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UT8kvV9hDzuncunG+6oOCy8YXz0j1XHvCLvRSQl1q4EYGqw7lsxoNjho19gH8p8hTeow7kA1whddH3NAP+asAw==","signature_status":"signed_v1","signed_at":"2026-05-27T01:04:55.277702Z","signed_message":"canonical_sha256_bytes"},"source_id":"2601.18163","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba51cc0cc5726b48120f1a67947c99a1ad484fe3c51d70c053699dd7333c44cc","sha256:d7502a75ac488ca72e3a9e6ffc845a5e9a5713795a7ee82e47d750622f90d67c"],"state_sha256":"2949e4b4d6d52cdecec9fad94cf6b7fb05628ca46e4bf976d775cb12e92d0e43"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wNkKZFbKlRj1YMkp8U8W1NwHN6b401kPZBD9mgSPgNixH+cMvc8ACvI7LRuq3hcOXlbJDkRkKxTF0Hzopd0zAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T05:26:24.039387Z","bundle_sha256":"ddd06d3f3c63f17701b0e3fd5142703d84b0634693bff57a79fc4018f79f03f9"}}