{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:WYP5SM7PDHA742UQDVRR5HTVKC","short_pith_number":"pith:WYP5SM7P","canonical_record":{"source":{"id":"0801.1448","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2008-01-09T15:16:39Z","cross_cats_sorted":[],"title_canon_sha256":"fedb7350ddbd1176add6a1f9c6cae5f4949d5467bfa78a97d4824f5777bd6d28","abstract_canon_sha256":"e0ed99981f63501ab5646ce835322c5a045f969161c0c622f475801d39c46613"},"schema_version":"1.0"},"canonical_sha256":"b61fd933ef19c1fe6a901d631e9e7550a47a5aad48507ebaf4439af92da31a60","source":{"kind":"arxiv","id":"0801.1448","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.1448","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"arxiv_version","alias_value":"0801.1448v2","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.1448","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"pith_short_12","alias_value":"WYP5SM7PDHA7","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"pith_short_16","alias_value":"WYP5SM7PDHA742UQ","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"pith_short_8","alias_value":"WYP5SM7P","created_at":"2026-07-04T15:12:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:WYP5SM7PDHA742UQDVRR5HTVKC","target":"record","payload":{"canonical_record":{"source":{"id":"0801.1448","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2008-01-09T15:16:39Z","cross_cats_sorted":[],"title_canon_sha256":"fedb7350ddbd1176add6a1f9c6cae5f4949d5467bfa78a97d4824f5777bd6d28","abstract_canon_sha256":"e0ed99981f63501ab5646ce835322c5a045f969161c0c622f475801d39c46613"},"schema_version":"1.0"},"canonical_sha256":"b61fd933ef19c1fe6a901d631e9e7550a47a5aad48507ebaf4439af92da31a60","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:12:13.244256Z","signature_b64":"jjcQvW7AVVnZNV7YDm9zYl31oc8mc0y7NXjpWG5MILJrNfIJVZQRpyhLfFGPFxgJ0ENQVFq6FtUCgjnc9QqcBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b61fd933ef19c1fe6a901d631e9e7550a47a5aad48507ebaf4439af92da31a60","last_reissued_at":"2026-07-04T15:12:13.243915Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:12:13.243915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0801.1448","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":"2026-07-04T15:12:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2xoKCjqdk003eM12vCruErpFpHxVYfMo1MZfx/qV3rGbP1GAWycHD/m49jhse9JpUTsfSq9KE/czQxcFkqLUCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:55:27.564992Z"},"content_sha256":"16830581b625cdd6a7a6c5d8cd6e6c28ce8a50a9c9222d7703abc00f4d336931","schema_version":"1.0","event_id":"sha256:16830581b625cdd6a7a6c5d8cd6e6c28ce8a50a9c9222d7703abc00f4d336931"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:WYP5SM7PDHA742UQDVRR5HTVKC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Slip flow over structured surfaces with entrapped microbubbles","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Jari Hyv\\\"aluoma, Jens Harting","submitted_at":"2008-01-09T15:16:39Z","abstract_excerpt":"On hydrophobic surfaces, roughness may lead to a transition to a superhydrophobic state, where gas bubbles at the surface can have a strong impact on a detected slip. We present two-phase lattice Boltzmann simulations of a Couette flow over structured surfaces with attached gas bubbles. Even though the bubbles add slippery surfaces to the channel, they can cause negative slip to appear due to the increased roughness. The simulation method used allows the bubbles to deform due to viscous stresses. We find a decrease of the detected slip with increasing shear rate which is in contrast to some re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.1448","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/0801.1448/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":"2026-07-04T15:12:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xaTSGNAcb+CAAQx3ZH2NCYcCzvSI5fuh82Bk6qhEmI6OcEUdeJAaSH6/NClESDiA6flzsRgQh8tJTnofAv6qAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:55:27.565479Z"},"content_sha256":"a127655c993854fcf1e4aa7cd41025ec54cc28aabcdac4c5db6e0c74df879bbd","schema_version":"1.0","event_id":"sha256:a127655c993854fcf1e4aa7cd41025ec54cc28aabcdac4c5db6e0c74df879bbd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WYP5SM7PDHA742UQDVRR5HTVKC/bundle.json","state_url":"https://pith.science/pith/WYP5SM7PDHA742UQDVRR5HTVKC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WYP5SM7PDHA742UQDVRR5HTVKC/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":"2026-08-04T12:55:27Z","links":{"resolver":"https://pith.science/pith/WYP5SM7PDHA742UQDVRR5HTVKC","bundle":"https://pith.science/pith/WYP5SM7PDHA742UQDVRR5HTVKC/bundle.json","state":"https://pith.science/pith/WYP5SM7PDHA742UQDVRR5HTVKC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WYP5SM7PDHA742UQDVRR5HTVKC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:WYP5SM7PDHA742UQDVRR5HTVKC","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":"e0ed99981f63501ab5646ce835322c5a045f969161c0c622f475801d39c46613","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2008-01-09T15:16:39Z","title_canon_sha256":"fedb7350ddbd1176add6a1f9c6cae5f4949d5467bfa78a97d4824f5777bd6d28"},"schema_version":"1.0","source":{"id":"0801.1448","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.1448","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"arxiv_version","alias_value":"0801.1448v2","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.1448","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"pith_short_12","alias_value":"WYP5SM7PDHA7","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"pith_short_16","alias_value":"WYP5SM7PDHA742UQ","created_at":"2026-07-04T15:12:13Z"},{"alias_kind":"pith_short_8","alias_value":"WYP5SM7P","created_at":"2026-07-04T15:12:13Z"}],"graph_snapshots":[{"event_id":"sha256:a127655c993854fcf1e4aa7cd41025ec54cc28aabcdac4c5db6e0c74df879bbd","target":"graph","created_at":"2026-07-04T15:12:13Z","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/0801.1448/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"On hydrophobic surfaces, roughness may lead to a transition to a superhydrophobic state, where gas bubbles at the surface can have a strong impact on a detected slip. We present two-phase lattice Boltzmann simulations of a Couette flow over structured surfaces with attached gas bubbles. Even though the bubbles add slippery surfaces to the channel, they can cause negative slip to appear due to the increased roughness. The simulation method used allows the bubbles to deform due to viscous stresses. We find a decrease of the detected slip with increasing shear rate which is in contrast to some re","authors_text":"Jari Hyv\\\"aluoma, Jens Harting","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.soft","submitted_at":"2008-01-09T15:16:39Z","title":"Slip flow over structured surfaces with entrapped microbubbles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.1448","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":"sha256:16830581b625cdd6a7a6c5d8cd6e6c28ce8a50a9c9222d7703abc00f4d336931","target":"record","created_at":"2026-07-04T15:12:13Z","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":"e0ed99981f63501ab5646ce835322c5a045f969161c0c622f475801d39c46613","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2008-01-09T15:16:39Z","title_canon_sha256":"fedb7350ddbd1176add6a1f9c6cae5f4949d5467bfa78a97d4824f5777bd6d28"},"schema_version":"1.0","source":{"id":"0801.1448","kind":"arxiv","version":2}},"canonical_sha256":"b61fd933ef19c1fe6a901d631e9e7550a47a5aad48507ebaf4439af92da31a60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b61fd933ef19c1fe6a901d631e9e7550a47a5aad48507ebaf4439af92da31a60","first_computed_at":"2026-07-04T15:12:13.243915Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:12:13.243915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jjcQvW7AVVnZNV7YDm9zYl31oc8mc0y7NXjpWG5MILJrNfIJVZQRpyhLfFGPFxgJ0ENQVFq6FtUCgjnc9QqcBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:12:13.244256Z","signed_message":"canonical_sha256_bytes"},"source_id":"0801.1448","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16830581b625cdd6a7a6c5d8cd6e6c28ce8a50a9c9222d7703abc00f4d336931","sha256:a127655c993854fcf1e4aa7cd41025ec54cc28aabcdac4c5db6e0c74df879bbd"],"state_sha256":"2689edc715e5baf7c043809c11c8f95e11b7e9db889667ba840a775a317d145b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9sGTi+VrsNwsWI8byKxnw3x5oGajRXTc3ivSm7DVq//n5XELMb0r4AmKlPGOiqM4kxR4K20cxRTC1Co79QflCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T12:55:27.570101Z","bundle_sha256":"39abd825e37afd048df14e5e0d039ae4ca9e508b27f20b687d1de9b17b09d4f8"}}