{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:BH6DAHHU7G57LTP3732RUSDSOY","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":"c18120ca461b3fbc88dff0337b7457df395fac770d1c890a700bd48ca106f9ab","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat","submitted_at":"2001-09-20T20:07:13Z","title_canon_sha256":"d9c111d283abfcd789ea7c47a51ad1bf4190f856f5a1f5f57fdaa15eb736652d"},"schema_version":"1.0","source":{"id":"cond-mat/0109375","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0109375","created_at":"2026-05-18T01:19:57Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0109375v1","created_at":"2026-05-18T01:19:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0109375","created_at":"2026-05-18T01:19:57Z"},{"alias_kind":"pith_short_12","alias_value":"BH6DAHHU7G57","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"BH6DAHHU7G57LTP3","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"BH6DAHHU","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:fb70f11331e395d2ddb338d28cb6bd951c6e10ddf2a21c3183bc3c0ff87c8a3d","target":"graph","created_at":"2026-05-18T01:19:57Z","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":"We investigate steady granular surface flows in a rotating drum and demonstrate the existence of rigid clusters of grains embedded in the flowing layer. These clusters are fractal and their size is power-law distributed from the grain size scale up to the thickness of the flowing layer. The implications of the absence of a characteristic length scale on available theoretical models of dense granular flows are discussed. Finally, we suggest a possible explanation of the difference between velocity profiles observed in surface flows and in flows down a rough inclined plane.","authors_text":"D. Bonamy, F. Daviaud, J.P. Bouchaud, L. Laurent, M. Bonetti","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat","submitted_at":"2001-09-20T20:07:13Z","title":"Multi-scale clustering in granular surface flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0109375","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":"sha256:45c3ec7d189751893a907c571778132157cf3c266993563cc220ca90357998e8","target":"record","created_at":"2026-05-18T01:19:57Z","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":"c18120ca461b3fbc88dff0337b7457df395fac770d1c890a700bd48ca106f9ab","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat","submitted_at":"2001-09-20T20:07:13Z","title_canon_sha256":"d9c111d283abfcd789ea7c47a51ad1bf4190f856f5a1f5f57fdaa15eb736652d"},"schema_version":"1.0","source":{"id":"cond-mat/0109375","kind":"arxiv","version":1}},"canonical_sha256":"09fc301cf4f9bbf5cdfbfef51a487276259b5ccc8cb4ac8d2356a0de649463ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09fc301cf4f9bbf5cdfbfef51a487276259b5ccc8cb4ac8d2356a0de649463ad","first_computed_at":"2026-05-18T01:19:57.791997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:57.791997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tdMSDCQp0K17gumzI6ce9lzWbCYqdA96K1UCA8+NXChMiKbMoydBWuMBYZXne1r8U3uh5nwEqY+R7ihGkL6VBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:57.792749Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0109375","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:45c3ec7d189751893a907c571778132157cf3c266993563cc220ca90357998e8","sha256:fb70f11331e395d2ddb338d28cb6bd951c6e10ddf2a21c3183bc3c0ff87c8a3d"],"state_sha256":"d67db2d669b6938d86b9a95f91b34b61ed4d009d3db3f7c93812335ef6b46cbb"}