{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:CSSMNND4AGLMYQRWEOIECQLXXI","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":"b4e981bedd8005cd3208b93f0b4cc126b5a737f6ddc208df4681f78c1fdc33df","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-10-10T16:19:16Z","title_canon_sha256":"6dbb791bafb9cd5b2e7cef17c11045da1627725e8d151644fcc22a1760b1317d"},"schema_version":"1.0","source":{"id":"1910.04671","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.04671","created_at":"2026-07-05T00:11:15Z"},{"alias_kind":"arxiv_version","alias_value":"1910.04671v1","created_at":"2026-07-05T00:11:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.04671","created_at":"2026-07-05T00:11:15Z"},{"alias_kind":"pith_short_12","alias_value":"CSSMNND4AGLM","created_at":"2026-07-05T00:11:15Z"},{"alias_kind":"pith_short_16","alias_value":"CSSMNND4AGLMYQRW","created_at":"2026-07-05T00:11:15Z"},{"alias_kind":"pith_short_8","alias_value":"CSSMNND4","created_at":"2026-07-05T00:11:15Z"}],"graph_snapshots":[{"event_id":"sha256:e3b1ed45e2f42fa02d262b9e514ed498fbb0623c979ca4a1da95286d2f8addce","target":"graph","created_at":"2026-07-05T00:11:15Z","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/1910.04671/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many complex aspects are involved in the morphodynamics of crescent-shaped dunes, known as barchans. One of them concerns the trajectories of individual grains over the dune, and how they affect its shape. In the case of subaqueous barchans, we proposed in Alvarez and Franklin [Phys. Rev. Lett. 121, 164503 (2018)] that their extremities, called horns, are formed mainly by grains migrating from upstream regions of the initial pile, and that they exhibit significant transverse displacements. Here, we extend our previous work to address the dynamics of grains migrating to horns after the dune has","authors_text":"Carlos Azael Alvarez, Erick de Moraes Franklin","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-10-10T16:19:16Z","title":"Horns of subaqueous barchan dunes: A study at the grain scale"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.04671","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:b278acb316e6ee2d08af07c615564879484c30dcf61a0b9cd83adac72226c613","target":"record","created_at":"2026-07-05T00:11:15Z","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":"b4e981bedd8005cd3208b93f0b4cc126b5a737f6ddc208df4681f78c1fdc33df","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-10-10T16:19:16Z","title_canon_sha256":"6dbb791bafb9cd5b2e7cef17c11045da1627725e8d151644fcc22a1760b1317d"},"schema_version":"1.0","source":{"id":"1910.04671","kind":"arxiv","version":1}},"canonical_sha256":"14a4c6b47c0196cc42362390414177ba38958d0a5d969a3d7e434c5c71f5f84b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"14a4c6b47c0196cc42362390414177ba38958d0a5d969a3d7e434c5c71f5f84b","first_computed_at":"2026-07-05T00:11:15.750362Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:11:15.750362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z57I9OMRLf/UcajrYAw9guIOfwAtV6A+hYXhGAHHx06gM1kad52hT+9DCZdlRRl4w9IC+QZuUHfpCfXfwdJ5DA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:11:15.750705Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.04671","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b278acb316e6ee2d08af07c615564879484c30dcf61a0b9cd83adac72226c613","sha256:e3b1ed45e2f42fa02d262b9e514ed498fbb0623c979ca4a1da95286d2f8addce"],"state_sha256":"f0047ad7f7efad2c49d550cb8adb4b698b4bdf015b7e3fb1fadaee483b08a378"}