{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TJQCURJLUBAUWRHY3QVHEGDTLU","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":"6fdc6d6d29c6717740caec8afcddb9137ef40cd96aa480297ba7e84952ff373c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-08T17:31:18Z","title_canon_sha256":"d4c36c3b3069b39604a6389b28886b59ac895c8ced39c83dc7b9b216c1b56a36"},"schema_version":"1.0","source":{"id":"1705.02984","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02984","created_at":"2026-05-18T00:24:17Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02984v4","created_at":"2026-05-18T00:24:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02984","created_at":"2026-05-18T00:24:17Z"},{"alias_kind":"pith_short_12","alias_value":"TJQCURJLUBAU","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TJQCURJLUBAUWRHY","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TJQCURJL","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:e771f4552529d2cd5553afb5c73ff655e8d0f18b77f8310c599ffba6974305b8","target":"graph","created_at":"2026-05-18T00:24:17Z","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 present an experiment on crystallization of packings of macroscopic granular spheres. This system is often considered to be a model for thermally driven atomic or colloidal systems. Cyclically shearing a packing of frictional spheres, we observe a first order phase transition from a disordered to an ordered state. The ordered state consists of crystallites of mixed FCC and HCP symmetry that coexist with the amorphous bulk. The transition, initiated by homogeneous nucleation, overcomes a barrier at 64.5% volume fraction. Nucleation consists predominantly of the dissolving of small nuclei and","authors_text":"Charles Radin, Frank Rietz, Harry L. Swinney, Matthias Schr\\\"oter","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-08T17:31:18Z","title":"Nucleation in sheared granular matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02984","kind":"arxiv","version":4},"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:e0aad39d877e728700f153bbfdbb6ff4e3d673503712c9a4822d2d6e5796dd0b","target":"record","created_at":"2026-05-18T00:24:17Z","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":"6fdc6d6d29c6717740caec8afcddb9137ef40cd96aa480297ba7e84952ff373c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-08T17:31:18Z","title_canon_sha256":"d4c36c3b3069b39604a6389b28886b59ac895c8ced39c83dc7b9b216c1b56a36"},"schema_version":"1.0","source":{"id":"1705.02984","kind":"arxiv","version":4}},"canonical_sha256":"9a602a452ba0414b44f8dc2a7218735d097655ecbeaf41023fc795be76ac377d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a602a452ba0414b44f8dc2a7218735d097655ecbeaf41023fc795be76ac377d","first_computed_at":"2026-05-18T00:24:17.567720Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:17.567720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/0jw9AGjMk5a2BxVDrGO1yTkMaH/1xhPRbb/q1YPYgsgDa2bEZWHqM9xrT9m9PVU7UyneR+v+zL+eE/fgohnCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:17.568286Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.02984","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0aad39d877e728700f153bbfdbb6ff4e3d673503712c9a4822d2d6e5796dd0b","sha256:e771f4552529d2cd5553afb5c73ff655e8d0f18b77f8310c599ffba6974305b8"],"state_sha256":"36dc91dcdf39c7ec453734b4e2cc9574ff35195ad9a130ee97d054b942133683"}