{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:5OMD5BSPX7IGK6GJOBA5I3QWK5","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":"4839ba3d34fe079f5af68b2e3b294d1fb05f108cd66e649553af58920e60d0f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T01:42:52Z","title_canon_sha256":"2440d7c89ee1eadd436d49b91adc1777c9d7888f5b091c0c37054ce27290bf3f"},"schema_version":"1.0","source":{"id":"1504.06372","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06372","created_at":"2026-05-18T01:37:29Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06372v2","created_at":"2026-05-18T01:37:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06372","created_at":"2026-05-18T01:37:29Z"},{"alias_kind":"pith_short_12","alias_value":"5OMD5BSPX7IG","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5OMD5BSPX7IGK6GJ","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5OMD5BSP","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:2de46a9615d1bb6caf37e901c6dca3ab7a2e0361d2c4d8081de2bc683e4a48b1","target":"graph","created_at":"2026-05-18T01:37:29Z","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":"Silicon materials play a key role in many technologically relevant fields, ranging from the electronic to the photovoltaic industry. A systematic search for silicon allotropes was performed by employing a modified ab initio minima hopping crystal structure prediction method. The algorithm was optimized to specifically investigate the hitherto barely explored low-density regime of the silicon phase diagram by imitating the guest-host concept of clathrate compounds. In total 44 metastable phases are presented, of which 11 exhibit direct or quasi-direct band-gaps in the range of $\\approx$1.0-1.8 ","authors_text":"Maximilian Amsler, Miguel A.L. Marques, Silvana Botti, Stefan Goedecker, Thomas J. Lenosky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T01:42:52Z","title":"Low-density silicon allotropes for photovoltaic applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06372","kind":"arxiv","version":2},"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:ed1ede7fda30d0bd4ff94f1af94b7701072bcb35e09761e6fe5133727d1e4191","target":"record","created_at":"2026-05-18T01:37:29Z","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":"4839ba3d34fe079f5af68b2e3b294d1fb05f108cd66e649553af58920e60d0f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T01:42:52Z","title_canon_sha256":"2440d7c89ee1eadd436d49b91adc1777c9d7888f5b091c0c37054ce27290bf3f"},"schema_version":"1.0","source":{"id":"1504.06372","kind":"arxiv","version":2}},"canonical_sha256":"eb983e864fbfd06578c97041d46e1657424ca9cacd28b5a8e0b00641cf0d8025","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb983e864fbfd06578c97041d46e1657424ca9cacd28b5a8e0b00641cf0d8025","first_computed_at":"2026-05-18T01:37:29.654798Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:29.654798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MFyvPyxOAmhkZKM/hmrG7NRU1cBUXPigm4nOZFPk4/ZROW/ybtIIgfbQ/FhCcmvYIaTy1qNhYiZpJ1f7YJfrAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:29.655541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.06372","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed1ede7fda30d0bd4ff94f1af94b7701072bcb35e09761e6fe5133727d1e4191","sha256:2de46a9615d1bb6caf37e901c6dca3ab7a2e0361d2c4d8081de2bc683e4a48b1"],"state_sha256":"5251bebb2a34bd2d25f5fbd97eb9336c220a63dbaa86a3b43f933dd865c0fff3"}