{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QU3CHC2FBXK64TXFYXL6BPUIHX","short_pith_number":"pith:QU3CHC2F","canonical_record":{"source":{"id":"2606.17795","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-16T11:12:46Z","cross_cats_sorted":[],"title_canon_sha256":"3241df57f99d6c64b3b1864e0cd57ac0a35abdf16f67dfc00af7dcc19cf743c9","abstract_canon_sha256":"ccbb6992a430beb87f282cb3e3b815ea69bb691986b797f47916fc6bd6ed8fb2"},"schema_version":"1.0"},"canonical_sha256":"8536238b450dd5ee4ee5c5d7e0be883de11c4ace45fa119044c3e4010b7a2083","source":{"kind":"arxiv","id":"2606.17795","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.17795","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"arxiv_version","alias_value":"2606.17795v1","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.17795","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_12","alias_value":"QU3CHC2FBXK6","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_16","alias_value":"QU3CHC2FBXK64TXF","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_8","alias_value":"QU3CHC2F","created_at":"2026-06-19T16:10:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QU3CHC2FBXK64TXFYXL6BPUIHX","target":"record","payload":{"canonical_record":{"source":{"id":"2606.17795","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-16T11:12:46Z","cross_cats_sorted":[],"title_canon_sha256":"3241df57f99d6c64b3b1864e0cd57ac0a35abdf16f67dfc00af7dcc19cf743c9","abstract_canon_sha256":"ccbb6992a430beb87f282cb3e3b815ea69bb691986b797f47916fc6bd6ed8fb2"},"schema_version":"1.0"},"canonical_sha256":"8536238b450dd5ee4ee5c5d7e0be883de11c4ace45fa119044c3e4010b7a2083","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:10:21.947444Z","signature_b64":"iv8azOaysgut6vGICvzwi4UO0TVGEqDyMg0nwQPtiocl49nsA602JinZYtLQBa5CbbBce6l7IR3AiO4C8IFzCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8536238b450dd5ee4ee5c5d7e0be883de11c4ace45fa119044c3e4010b7a2083","last_reissued_at":"2026-06-19T16:10:21.947032Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:10:21.947032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.17795","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":"2026-06-19T16:10:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"973DGQBdSZ6r7719hjcJOjLc7AgRsXknzZAzsseNYw8LS/am0rxwdMV4pLVFSDoyxEaoIhROXFFqoZxGkH/lAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T22:15:31.844707Z"},"content_sha256":"2e0cbcbf624ddf97e6e1b7ac1418ba4688c95ad19660023d33e9b14b76959950","schema_version":"1.0","event_id":"sha256:2e0cbcbf624ddf97e6e1b7ac1418ba4688c95ad19660023d33e9b14b76959950"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QU3CHC2FBXK64TXFYXL6BPUIHX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamics of a vortex column of supercritical fluid across the pseudo-boiling line","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Fazle Hussain, Jordi Poblador-Ibanez","submitted_at":"2026-06-16T11:12:46Z","abstract_excerpt":"The evolution of an axisymmetric vortex column in a weakly compressible supercritical fluid is analysed. A thermal layer is imposed to radially stratify the fluid and uncover effects of the large fluid property variations across the pseudo-boiling line. A multi-dimensional flow solver based on a low-Mach approximation is employed. Using supercritical carbon dioxide as the fluid, we examine axisymmetric configurations at low Reynolds number with the vortex core hotter or colder than the surrounding fluid and for different thermodynamic pressures close to the critical pressure. Vorticity evoluti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17795","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/2606.17795/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":"2026-06-19T16:10:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vtHlSio119eZahZYFSy6eP88OJOBwgdhsXumlAfeUedP/DHJ1rxd3yZbads9TktOjqtNXpQLGtDnWJvpwHw0Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T22:15:31.845070Z"},"content_sha256":"bdcb087c1d5fa95a15f2736f18f765c7eea5fa4f9b2ecd0f1fce43a75083aa44","schema_version":"1.0","event_id":"sha256:bdcb087c1d5fa95a15f2736f18f765c7eea5fa4f9b2ecd0f1fce43a75083aa44"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QU3CHC2FBXK64TXFYXL6BPUIHX/bundle.json","state_url":"https://pith.science/pith/QU3CHC2FBXK64TXFYXL6BPUIHX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QU3CHC2FBXK64TXFYXL6BPUIHX/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":"2026-07-03T22:15:31Z","links":{"resolver":"https://pith.science/pith/QU3CHC2FBXK64TXFYXL6BPUIHX","bundle":"https://pith.science/pith/QU3CHC2FBXK64TXFYXL6BPUIHX/bundle.json","state":"https://pith.science/pith/QU3CHC2FBXK64TXFYXL6BPUIHX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QU3CHC2FBXK64TXFYXL6BPUIHX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QU3CHC2FBXK64TXFYXL6BPUIHX","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":"ccbb6992a430beb87f282cb3e3b815ea69bb691986b797f47916fc6bd6ed8fb2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-16T11:12:46Z","title_canon_sha256":"3241df57f99d6c64b3b1864e0cd57ac0a35abdf16f67dfc00af7dcc19cf743c9"},"schema_version":"1.0","source":{"id":"2606.17795","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.17795","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"arxiv_version","alias_value":"2606.17795v1","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.17795","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_12","alias_value":"QU3CHC2FBXK6","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_16","alias_value":"QU3CHC2FBXK64TXF","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_8","alias_value":"QU3CHC2F","created_at":"2026-06-19T16:10:21Z"}],"graph_snapshots":[{"event_id":"sha256:bdcb087c1d5fa95a15f2736f18f765c7eea5fa4f9b2ecd0f1fce43a75083aa44","target":"graph","created_at":"2026-06-19T16:10:21Z","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/2606.17795/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The evolution of an axisymmetric vortex column in a weakly compressible supercritical fluid is analysed. A thermal layer is imposed to radially stratify the fluid and uncover effects of the large fluid property variations across the pseudo-boiling line. A multi-dimensional flow solver based on a low-Mach approximation is employed. Using supercritical carbon dioxide as the fluid, we examine axisymmetric configurations at low Reynolds number with the vortex core hotter or colder than the surrounding fluid and for different thermodynamic pressures close to the critical pressure. Vorticity evoluti","authors_text":"Fazle Hussain, Jordi Poblador-Ibanez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-16T11:12:46Z","title":"Dynamics of a vortex column of supercritical fluid across the pseudo-boiling line"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17795","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":"sha256:2e0cbcbf624ddf97e6e1b7ac1418ba4688c95ad19660023d33e9b14b76959950","target":"record","created_at":"2026-06-19T16:10:21Z","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":"ccbb6992a430beb87f282cb3e3b815ea69bb691986b797f47916fc6bd6ed8fb2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-16T11:12:46Z","title_canon_sha256":"3241df57f99d6c64b3b1864e0cd57ac0a35abdf16f67dfc00af7dcc19cf743c9"},"schema_version":"1.0","source":{"id":"2606.17795","kind":"arxiv","version":1}},"canonical_sha256":"8536238b450dd5ee4ee5c5d7e0be883de11c4ace45fa119044c3e4010b7a2083","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8536238b450dd5ee4ee5c5d7e0be883de11c4ace45fa119044c3e4010b7a2083","first_computed_at":"2026-06-19T16:10:21.947032Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:10:21.947032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iv8azOaysgut6vGICvzwi4UO0TVGEqDyMg0nwQPtiocl49nsA602JinZYtLQBa5CbbBce6l7IR3AiO4C8IFzCw==","signature_status":"signed_v1","signed_at":"2026-06-19T16:10:21.947444Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.17795","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e0cbcbf624ddf97e6e1b7ac1418ba4688c95ad19660023d33e9b14b76959950","sha256:bdcb087c1d5fa95a15f2736f18f765c7eea5fa4f9b2ecd0f1fce43a75083aa44"],"state_sha256":"aa36ed14db8157acbe07f0c098ee20ce5e2625bb324a4321c9061855d80ef288"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aTtJgBwVZfPTHMUZBbb2d2bw987/CuNp+j9dgDy7YCY5rHd+7ngDta2OP1t499UHj+G0dVo/44ljjvS29Wn6CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T22:15:31.847188Z","bundle_sha256":"421a03e40ca0ca76a19f9fe3e5fc515384c631ff5d71eb24260e8cae0df4b8df"}}