{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:KS2NUZEBPZEDC422SZEMDQEKZS","short_pith_number":"pith:KS2NUZEB","canonical_record":{"source":{"id":"2112.05442","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-12-10T10:49:23Z","cross_cats_sorted":[],"title_canon_sha256":"438653c0f03f6dc1c7f98d94b1a8f28e1d14fdf8392756d67edef6beb6c11342","abstract_canon_sha256":"4a07e943250bf123411598981ce9707f68f3e5cb042ea39278e92133f69bbc6f"},"schema_version":"1.0"},"canonical_sha256":"54b4da64817e4831735a9648c1c08acc96e57de60b52e278aef1a96a011f3734","source":{"kind":"arxiv","id":"2112.05442","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.05442","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"arxiv_version","alias_value":"2112.05442v2","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.05442","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"pith_short_12","alias_value":"KS2NUZEBPZED","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"KS2NUZEBPZEDC422","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"KS2NUZEB","created_at":"2026-07-05T04:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:KS2NUZEBPZEDC422SZEMDQEKZS","target":"record","payload":{"canonical_record":{"source":{"id":"2112.05442","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-12-10T10:49:23Z","cross_cats_sorted":[],"title_canon_sha256":"438653c0f03f6dc1c7f98d94b1a8f28e1d14fdf8392756d67edef6beb6c11342","abstract_canon_sha256":"4a07e943250bf123411598981ce9707f68f3e5cb042ea39278e92133f69bbc6f"},"schema_version":"1.0"},"canonical_sha256":"54b4da64817e4831735a9648c1c08acc96e57de60b52e278aef1a96a011f3734","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:31:28.857171Z","signature_b64":"zJq3dtxI93D6mqCr+uwS3nMDosBH+VJdeoSt74Xm+9Jm2tV1I/hfzFs/3boCVfUkbEv80aaKVgx0ABqK3bUGBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"54b4da64817e4831735a9648c1c08acc96e57de60b52e278aef1a96a011f3734","last_reissued_at":"2026-07-05T04:31:28.856697Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:31:28.856697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.05442","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":"2026-07-05T04:31:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RcMePYa4hI7KRzb0vhhy63FIzCLMw4yxnE9CHe9ZOg2fFeh9qQnn4fBovxrG1Ky+Bw+JwNei9z4BUwVyBj79Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T22:54:54.570433Z"},"content_sha256":"cda6828d188705876a4a179fd8b887de55f09792938318ac7c23e128d897249f","schema_version":"1.0","event_id":"sha256:cda6828d188705876a4a179fd8b887de55f09792938318ac7c23e128d897249f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:KS2NUZEBPZEDC422SZEMDQEKZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extreme vorticity events in turbulent Rayleigh-B\\'enard convection from stereoscopic measurements and reservoir computing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"J\\\"org Schumacher, Robert Kr\\\"auter, Valentina Valori","submitted_at":"2021-12-10T10:49:23Z","abstract_excerpt":"High-amplitude events of the out-of-plane vorticity component $\\omega_z$ are analyzed by stereoscopic particle image velocimetry (PIV) in the bulk region of turbulent Rayleigh-B\\'{e}nard convection in air. The Rayleigh numbers ${\\rm Ra}$ vary from $1.7 \\times 10^4$ to $5.1 \\times 10^5$. The experimental investigation is connected with a comprehensive statistical analysis of long-term time series of $\\omega_z$ and individual velocity derivatives $\\partial u_i/\\partial x_j$. A statistical convergence for derivative moments up to an order of 6 is demonstrated. Our results are found to agree well "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.05442","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/2112.05442/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":"2026-07-05T04:31:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a5jQpAnNbAK0SNG6K9Mp49JRPjJPmVIgeW47xosqDJGFSbr855QFEhXS8xUG62geIE5WkDqPACHuHBNk9Oh3BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T22:54:54.570967Z"},"content_sha256":"38495ad6f18ef1365255f9e5f857ee7315ac4b5ab0d8891022ef28b274d9a0e2","schema_version":"1.0","event_id":"sha256:38495ad6f18ef1365255f9e5f857ee7315ac4b5ab0d8891022ef28b274d9a0e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KS2NUZEBPZEDC422SZEMDQEKZS/bundle.json","state_url":"https://pith.science/pith/KS2NUZEBPZEDC422SZEMDQEKZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KS2NUZEBPZEDC422SZEMDQEKZS/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":"2026-08-15T22:54:54Z","links":{"resolver":"https://pith.science/pith/KS2NUZEBPZEDC422SZEMDQEKZS","bundle":"https://pith.science/pith/KS2NUZEBPZEDC422SZEMDQEKZS/bundle.json","state":"https://pith.science/pith/KS2NUZEBPZEDC422SZEMDQEKZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KS2NUZEBPZEDC422SZEMDQEKZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:KS2NUZEBPZEDC422SZEMDQEKZS","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":"4a07e943250bf123411598981ce9707f68f3e5cb042ea39278e92133f69bbc6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-12-10T10:49:23Z","title_canon_sha256":"438653c0f03f6dc1c7f98d94b1a8f28e1d14fdf8392756d67edef6beb6c11342"},"schema_version":"1.0","source":{"id":"2112.05442","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.05442","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"arxiv_version","alias_value":"2112.05442v2","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.05442","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"pith_short_12","alias_value":"KS2NUZEBPZED","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"KS2NUZEBPZEDC422","created_at":"2026-07-05T04:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"KS2NUZEB","created_at":"2026-07-05T04:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:38495ad6f18ef1365255f9e5f857ee7315ac4b5ab0d8891022ef28b274d9a0e2","target":"graph","created_at":"2026-07-05T04:31:28Z","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/2112.05442/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-amplitude events of the out-of-plane vorticity component $\\omega_z$ are analyzed by stereoscopic particle image velocimetry (PIV) in the bulk region of turbulent Rayleigh-B\\'{e}nard convection in air. The Rayleigh numbers ${\\rm Ra}$ vary from $1.7 \\times 10^4$ to $5.1 \\times 10^5$. The experimental investigation is connected with a comprehensive statistical analysis of long-term time series of $\\omega_z$ and individual velocity derivatives $\\partial u_i/\\partial x_j$. A statistical convergence for derivative moments up to an order of 6 is demonstrated. Our results are found to agree well ","authors_text":"J\\\"org Schumacher, Robert Kr\\\"auter, Valentina Valori","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-12-10T10:49:23Z","title":"Extreme vorticity events in turbulent Rayleigh-B\\'enard convection from stereoscopic measurements and reservoir computing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.05442","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:cda6828d188705876a4a179fd8b887de55f09792938318ac7c23e128d897249f","target":"record","created_at":"2026-07-05T04:31:28Z","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":"4a07e943250bf123411598981ce9707f68f3e5cb042ea39278e92133f69bbc6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-12-10T10:49:23Z","title_canon_sha256":"438653c0f03f6dc1c7f98d94b1a8f28e1d14fdf8392756d67edef6beb6c11342"},"schema_version":"1.0","source":{"id":"2112.05442","kind":"arxiv","version":2}},"canonical_sha256":"54b4da64817e4831735a9648c1c08acc96e57de60b52e278aef1a96a011f3734","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54b4da64817e4831735a9648c1c08acc96e57de60b52e278aef1a96a011f3734","first_computed_at":"2026-07-05T04:31:28.856697Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:31:28.856697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zJq3dtxI93D6mqCr+uwS3nMDosBH+VJdeoSt74Xm+9Jm2tV1I/hfzFs/3boCVfUkbEv80aaKVgx0ABqK3bUGBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:31:28.857171Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.05442","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cda6828d188705876a4a179fd8b887de55f09792938318ac7c23e128d897249f","sha256:38495ad6f18ef1365255f9e5f857ee7315ac4b5ab0d8891022ef28b274d9a0e2"],"state_sha256":"6112e77e5c3e0e7e589201e7d52179b12beaace83c3e2267be9f4e78be6e8d5b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hA4XVXoVGAmenfpv6yTkWy6SO9XLYKy5BlZxkalpwx12AhRscp5DtBPbAWip32EpYqEv97mDf3UdVzpNjwaHBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T22:54:54.574609Z","bundle_sha256":"2e914b9e94846ae82e206121de9cdf3806b584e43b7deaa26623630e58541c9e"}}