{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VZEXBPP3YZSDDCJ4VWEOBF2CPH","short_pith_number":"pith:VZEXBPP3","canonical_record":{"source":{"id":"1807.11463","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-07-30T17:44:55Z","cross_cats_sorted":[],"title_canon_sha256":"a76de537825b333ac54e16a3fd008942d9b5ea9c8d4d904c89f8e5b8598786ba","abstract_canon_sha256":"f2fe0df862c1dd37ce28d802cf0bacee57ed2979d11d95d84ddeee67e3f9e97f"},"schema_version":"1.0"},"canonical_sha256":"ae4970bdfbc66431893cad88e0974279e40acc25e26cd5e1d450e5aa189a050f","source":{"kind":"arxiv","id":"1807.11463","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11463","created_at":"2026-05-17T23:46:36Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11463v1","created_at":"2026-05-17T23:46:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11463","created_at":"2026-05-17T23:46:36Z"},{"alias_kind":"pith_short_12","alias_value":"VZEXBPP3YZSD","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VZEXBPP3YZSDDCJ4","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VZEXBPP3","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VZEXBPP3YZSDDCJ4VWEOBF2CPH","target":"record","payload":{"canonical_record":{"source":{"id":"1807.11463","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-07-30T17:44:55Z","cross_cats_sorted":[],"title_canon_sha256":"a76de537825b333ac54e16a3fd008942d9b5ea9c8d4d904c89f8e5b8598786ba","abstract_canon_sha256":"f2fe0df862c1dd37ce28d802cf0bacee57ed2979d11d95d84ddeee67e3f9e97f"},"schema_version":"1.0"},"canonical_sha256":"ae4970bdfbc66431893cad88e0974279e40acc25e26cd5e1d450e5aa189a050f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:36.229925Z","signature_b64":"sOvCIon7HCmpd59aJC5FyLSryHqRklTD+x4sMg3kSzrP934Z2iyzm5aZestlnT4Dyxi+ymD+3eCjh/vX3101Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae4970bdfbc66431893cad88e0974279e40acc25e26cd5e1d450e5aa189a050f","last_reissued_at":"2026-05-17T23:46:36.229272Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:36.229272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.11463","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":"2026-05-17T23:46:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"trVjQp5yRY81pijJJgYMx5iOfpcrJcLA+jH4pAmF2SRrzwE1oakuNsiAbKr4rdBbpo2znUxhpir/+F0pTCa6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T09:08:14.254304Z"},"content_sha256":"edaf41e1a07be2d335ddd39a601b7aaa594abec6e2b5e40e5b67bf76207094a5","schema_version":"1.0","event_id":"sha256:edaf41e1a07be2d335ddd39a601b7aaa594abec6e2b5e40e5b67bf76207094a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VZEXBPP3YZSDDCJ4VWEOBF2CPH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rotational Instabilities in Microchannel Flows","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Sandeep Saha, Saunak Sengupta, Sukhendu Ghosh, Suman Chakraborty","submitted_at":"2018-07-30T17:44:55Z","abstract_excerpt":"Mixing in numerous medical and chemical applications, involving overly long microchannels, can be enhanced by inducing flow instabilities. The channel length, is thus shortened in the inertial microfluidics regime due to the enhanced mixing, thereby rendering the device compact and portable. Motivated by the emerging applications of lab-on-a-CD based compact microfluidic devices, we analyze the linear stability of rotationally actuated microchannel flows commonly deployed for biochemical and biomedical applications. The solution of the coupled system of Orr-Sommerfeld (OS) and Squire (SQ) equa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11463","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":""},"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":"2026-05-17T23:46:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0j2coRYAeMLLrmSyb4KFI4axNSAKBIJ1UFk7vfn+9qzYT/lvE94ErTaiRuat+3sSolLHj33vZtHzvz6LpsIIBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T09:08:14.254673Z"},"content_sha256":"06bddfe86dbc2c2d7ee448483caa8dfa76d2bfca3a19109d9d4e7298a206f93f","schema_version":"1.0","event_id":"sha256:06bddfe86dbc2c2d7ee448483caa8dfa76d2bfca3a19109d9d4e7298a206f93f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH/bundle.json","state_url":"https://pith.science/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH/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":"2026-06-26T09:08:14Z","links":{"resolver":"https://pith.science/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH","bundle":"https://pith.science/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH/bundle.json","state":"https://pith.science/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VZEXBPP3YZSDDCJ4VWEOBF2CPH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VZEXBPP3YZSDDCJ4VWEOBF2CPH","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":"f2fe0df862c1dd37ce28d802cf0bacee57ed2979d11d95d84ddeee67e3f9e97f","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-07-30T17:44:55Z","title_canon_sha256":"a76de537825b333ac54e16a3fd008942d9b5ea9c8d4d904c89f8e5b8598786ba"},"schema_version":"1.0","source":{"id":"1807.11463","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11463","created_at":"2026-05-17T23:46:36Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11463v1","created_at":"2026-05-17T23:46:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11463","created_at":"2026-05-17T23:46:36Z"},{"alias_kind":"pith_short_12","alias_value":"VZEXBPP3YZSD","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VZEXBPP3YZSDDCJ4","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VZEXBPP3","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:06bddfe86dbc2c2d7ee448483caa8dfa76d2bfca3a19109d9d4e7298a206f93f","target":"graph","created_at":"2026-05-17T23:46:36Z","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"},"paper":{"abstract_excerpt":"Mixing in numerous medical and chemical applications, involving overly long microchannels, can be enhanced by inducing flow instabilities. The channel length, is thus shortened in the inertial microfluidics regime due to the enhanced mixing, thereby rendering the device compact and portable. Motivated by the emerging applications of lab-on-a-CD based compact microfluidic devices, we analyze the linear stability of rotationally actuated microchannel flows commonly deployed for biochemical and biomedical applications. The solution of the coupled system of Orr-Sommerfeld (OS) and Squire (SQ) equa","authors_text":"Sandeep Saha, Saunak Sengupta, Sukhendu Ghosh, Suman Chakraborty","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-07-30T17:44:55Z","title":"Rotational Instabilities in Microchannel Flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11463","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:edaf41e1a07be2d335ddd39a601b7aaa594abec6e2b5e40e5b67bf76207094a5","target":"record","created_at":"2026-05-17T23:46:36Z","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":"f2fe0df862c1dd37ce28d802cf0bacee57ed2979d11d95d84ddeee67e3f9e97f","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-07-30T17:44:55Z","title_canon_sha256":"a76de537825b333ac54e16a3fd008942d9b5ea9c8d4d904c89f8e5b8598786ba"},"schema_version":"1.0","source":{"id":"1807.11463","kind":"arxiv","version":1}},"canonical_sha256":"ae4970bdfbc66431893cad88e0974279e40acc25e26cd5e1d450e5aa189a050f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae4970bdfbc66431893cad88e0974279e40acc25e26cd5e1d450e5aa189a050f","first_computed_at":"2026-05-17T23:46:36.229272Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:36.229272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sOvCIon7HCmpd59aJC5FyLSryHqRklTD+x4sMg3kSzrP934Z2iyzm5aZestlnT4Dyxi+ymD+3eCjh/vX3101Dg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:36.229925Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.11463","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:edaf41e1a07be2d335ddd39a601b7aaa594abec6e2b5e40e5b67bf76207094a5","sha256:06bddfe86dbc2c2d7ee448483caa8dfa76d2bfca3a19109d9d4e7298a206f93f"],"state_sha256":"dd37c5fa3c3fffb3f9b8adb748f7c891678fb44f72258b4df36660ca0ea988d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WPTg91Sz9ztY3mmaTP+Ek6ZDkqNpjD09sbcfHP/WjMPfMbRlJPWOgqCIosHgddSv/T1/IQlv8VqbYpMNRYukDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T09:08:14.256660Z","bundle_sha256":"d3859be44a1d119e00e4c50aff5c702e801372fa54d1853425a77f3bc528a2d5"}}