{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7XTSE75RHI2O246OVRMKD5IVAK","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":"b9f24aa99724817cc798123ea6dd4b8b935ceb822ef1c64b1543eb773c768185","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-05-10T16:17:59Z","title_canon_sha256":"f24eb50214aa288b8def33f1f4a3f652276127298b0306e0cb6e8de32912cf1b"},"schema_version":"1.0","source":{"id":"1605.03080","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.03080","created_at":"2026-05-18T01:06:24Z"},{"alias_kind":"arxiv_version","alias_value":"1605.03080v1","created_at":"2026-05-18T01:06:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.03080","created_at":"2026-05-18T01:06:24Z"},{"alias_kind":"pith_short_12","alias_value":"7XTSE75RHI2O","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7XTSE75RHI2O246O","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7XTSE75R","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:6c9fead29f95eadefca5087ccec7b6846b0a56949121fc20b353f6a0f839f3be","target":"graph","created_at":"2026-05-18T01:06:24Z","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 experimentally study the crystallization of a monolayer of vibrated discs with a built-in polar asymmetry, a model system of active liquids, and contrast it with that of vibrated isotropic discs. Increasing the packing fraction $\\phi$, the quasi-continuous crystallization reported for isotropic discs is replaced by a transition, or a crossover towards a \"self-melting\" crystal. Increasing the packing fraction from the liquid phase, clusters of dense hexagonally-ordered packed discs spontaneously form, melt, split and merge leading to a highly intermittent and heterogeneous dynamics. The resu","authors_text":"G. Briand, O. Dauchot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-05-10T16:17:59Z","title":"Crystallization of self-propelled hard-discs : a new scenario"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.03080","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":"sha256:3acb48227248c2e228bac1470ff8d716d6f2e6d2278a0e38e80e282bbf41cafd","target":"record","created_at":"2026-05-18T01:06:24Z","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":"b9f24aa99724817cc798123ea6dd4b8b935ceb822ef1c64b1543eb773c768185","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-05-10T16:17:59Z","title_canon_sha256":"f24eb50214aa288b8def33f1f4a3f652276127298b0306e0cb6e8de32912cf1b"},"schema_version":"1.0","source":{"id":"1605.03080","kind":"arxiv","version":1}},"canonical_sha256":"fde7227fb13a34ed73ceac58a1f5150282cec336177ed577d40f2d9ef239bda3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fde7227fb13a34ed73ceac58a1f5150282cec336177ed577d40f2d9ef239bda3","first_computed_at":"2026-05-18T01:06:24.257780Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:24.257780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xjd04Q9qyAPJzLX1sbR4D5qNHu6t8bL4PwQv4FBC6mWjM3joqb4nnbsMo2tIEH90WdFSu+A5AVjffeQLOnOgDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:24.258199Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.03080","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3acb48227248c2e228bac1470ff8d716d6f2e6d2278a0e38e80e282bbf41cafd","sha256:6c9fead29f95eadefca5087ccec7b6846b0a56949121fc20b353f6a0f839f3be"],"state_sha256":"68626532ddb9902866c2c7db5ed7a620dde8a26ce3b8245661287550c9dc5fdd"}