{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:OJTDBVAFWGHY67YVVZOGGB6WLD","short_pith_number":"pith:OJTDBVAF","canonical_record":{"source":{"id":"1804.02212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-04-06T11:49:30Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"695fe9eb060996d7a08d7d56b5ce4e97e458789b13fe9e95213a8e4ffeb20fd5","abstract_canon_sha256":"0aab1d647e2a6da126c903f7b17f797fd50191aa8d29dc87db334dbd269ee236"},"schema_version":"1.0"},"canonical_sha256":"726630d405b18f8f7f15ae5c6307d658e708b6aac94893d9ac701b49f42022b7","source":{"kind":"arxiv","id":"1804.02212","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02212","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02212v1","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02212","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"pith_short_12","alias_value":"OJTDBVAFWGHY","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OJTDBVAFWGHY67YV","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OJTDBVAF","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:OJTDBVAFWGHY67YVVZOGGB6WLD","target":"record","payload":{"canonical_record":{"source":{"id":"1804.02212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-04-06T11:49:30Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"695fe9eb060996d7a08d7d56b5ce4e97e458789b13fe9e95213a8e4ffeb20fd5","abstract_canon_sha256":"0aab1d647e2a6da126c903f7b17f797fd50191aa8d29dc87db334dbd269ee236"},"schema_version":"1.0"},"canonical_sha256":"726630d405b18f8f7f15ae5c6307d658e708b6aac94893d9ac701b49f42022b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:05.515328Z","signature_b64":"QOmOo+BNRsrpiZRO/S7KeKlefPho/kaem+uMGP4COzJFDQBeVG9QVUUaswb7CrXlP9yuJDL0rX4SoSN20kDqDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"726630d405b18f8f7f15ae5c6307d658e708b6aac94893d9ac701b49f42022b7","last_reissued_at":"2026-05-18T00:19:05.514641Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:05.514641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.02212","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":"2026-05-18T00:19:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jvubayWj+Ce33ffIHipPtjW1uB4cWtgJcNMhu0Y6Sc5I7FafIIQYtr6lFaa1x2WcPa5D4+3P70abqDjVar9RBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:40:01.993498Z"},"content_sha256":"882b45c7d7cd5b71e781fd8bf2acfc0792635487bbd919294f1b3286c7935e0e","schema_version":"1.0","event_id":"sha256:882b45c7d7cd5b71e781fd8bf2acfc0792635487bbd919294f1b3286c7935e0e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:OJTDBVAFWGHY67YVVZOGGB6WLD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effective squirmer models for self-phoretic chemically active spherical colloids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"cond-mat.soft","authors_text":"M.N. Popescu, M. Tasinkevych, S. Dietrich, W.E. Uspal, Z. Eskandari","submitted_at":"2018-04-06T11:49:30Z","abstract_excerpt":"Various aspects of self-motility of chemically active colloids in Newtonian fluids can be captured by simple models for their chemical activity plus a phoretic slip hydrodynamic boundary condition on their surface. For particles of simple shapes (e.g., spheres) -- as employed in many experimental studies -- which move at very low Reynolds numbers in an unbounded fluid, such models of chemically active particles effectively map onto the well studied so-called hydrodynamic squirmers [S. Michelin and E. Lauga, J. Fluid Mech. \\textbf{747}, 572 (2014)]. Accordingly, intuitively appealing analogies "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02212","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":"2026-05-18T00:19:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oXH3yj3wsHLAlP2hztJge2VnrYQ7KmyPdlvo1/3fPE24JEtEyEfNdGHr3WMk4EfQn7P/6y24oErfaKvWAHs3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:40:01.993845Z"},"content_sha256":"805640ea11f57a43890a3c8d8625de9140d52eff489f3108fe7ceaa1899ba7ae","schema_version":"1.0","event_id":"sha256:805640ea11f57a43890a3c8d8625de9140d52eff489f3108fe7ceaa1899ba7ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OJTDBVAFWGHY67YVVZOGGB6WLD/bundle.json","state_url":"https://pith.science/pith/OJTDBVAFWGHY67YVVZOGGB6WLD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OJTDBVAFWGHY67YVVZOGGB6WLD/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":"2026-05-28T08:40:01Z","links":{"resolver":"https://pith.science/pith/OJTDBVAFWGHY67YVVZOGGB6WLD","bundle":"https://pith.science/pith/OJTDBVAFWGHY67YVVZOGGB6WLD/bundle.json","state":"https://pith.science/pith/OJTDBVAFWGHY67YVVZOGGB6WLD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OJTDBVAFWGHY67YVVZOGGB6WLD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OJTDBVAFWGHY67YVVZOGGB6WLD","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":"0aab1d647e2a6da126c903f7b17f797fd50191aa8d29dc87db334dbd269ee236","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-04-06T11:49:30Z","title_canon_sha256":"695fe9eb060996d7a08d7d56b5ce4e97e458789b13fe9e95213a8e4ffeb20fd5"},"schema_version":"1.0","source":{"id":"1804.02212","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02212","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02212v1","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02212","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"pith_short_12","alias_value":"OJTDBVAFWGHY","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OJTDBVAFWGHY67YV","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OJTDBVAF","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:805640ea11f57a43890a3c8d8625de9140d52eff489f3108fe7ceaa1899ba7ae","target":"graph","created_at":"2026-05-18T00:19:05Z","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":"Various aspects of self-motility of chemically active colloids in Newtonian fluids can be captured by simple models for their chemical activity plus a phoretic slip hydrodynamic boundary condition on their surface. For particles of simple shapes (e.g., spheres) -- as employed in many experimental studies -- which move at very low Reynolds numbers in an unbounded fluid, such models of chemically active particles effectively map onto the well studied so-called hydrodynamic squirmers [S. Michelin and E. Lauga, J. Fluid Mech. \\textbf{747}, 572 (2014)]. Accordingly, intuitively appealing analogies ","authors_text":"M.N. Popescu, M. Tasinkevych, S. Dietrich, W.E. Uspal, Z. Eskandari","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-04-06T11:49:30Z","title":"Effective squirmer models for self-phoretic chemically active spherical colloids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02212","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":"sha256:882b45c7d7cd5b71e781fd8bf2acfc0792635487bbd919294f1b3286c7935e0e","target":"record","created_at":"2026-05-18T00:19:05Z","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":"0aab1d647e2a6da126c903f7b17f797fd50191aa8d29dc87db334dbd269ee236","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-04-06T11:49:30Z","title_canon_sha256":"695fe9eb060996d7a08d7d56b5ce4e97e458789b13fe9e95213a8e4ffeb20fd5"},"schema_version":"1.0","source":{"id":"1804.02212","kind":"arxiv","version":1}},"canonical_sha256":"726630d405b18f8f7f15ae5c6307d658e708b6aac94893d9ac701b49f42022b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"726630d405b18f8f7f15ae5c6307d658e708b6aac94893d9ac701b49f42022b7","first_computed_at":"2026-05-18T00:19:05.514641Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:05.514641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QOmOo+BNRsrpiZRO/S7KeKlefPho/kaem+uMGP4COzJFDQBeVG9QVUUaswb7CrXlP9yuJDL0rX4SoSN20kDqDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:05.515328Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.02212","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:882b45c7d7cd5b71e781fd8bf2acfc0792635487bbd919294f1b3286c7935e0e","sha256:805640ea11f57a43890a3c8d8625de9140d52eff489f3108fe7ceaa1899ba7ae"],"state_sha256":"9fecb42a834787638405a9be8c6913307d6a174134c53df6e4019af6223c273c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AQjAZFzjmyjxEYcLNV+mrcvV7FiQDy8FNl0hxVJmoFxph8owgam0Gg6EPbpPGa3t1VgKSTKKP7AJ0x3UXhhJBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:40:01.995803Z","bundle_sha256":"5ee6fedef3b004c31b628572a96e388120c26c417d9befab0b0878ef20f147d9"}}