{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SPQCFXXDINZHOBUM7Z43TCVCWA","short_pith_number":"pith:SPQCFXXD","canonical_record":{"source":{"id":"1509.01975","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-09-07T10:26:28Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f81361bb219855bd2b3cf089814c6274633f3c4cfb70ddc7390e2047968a66c8","abstract_canon_sha256":"6bafa2dd911da66268ef3d0d8ba8d2c9671ab3065b090249ce5ca62c95c4f04f"},"schema_version":"1.0"},"canonical_sha256":"93e022dee3437277068cfe79b98aa2b035350ccd0e81df1b5d4ccd506e17fef1","source":{"kind":"arxiv","id":"1509.01975","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.01975","created_at":"2026-05-18T01:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"1509.01975v1","created_at":"2026-05-18T01:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.01975","created_at":"2026-05-18T01:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"SPQCFXXDINZH","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SPQCFXXDINZHOBUM","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SPQCFXXD","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SPQCFXXDINZHOBUM7Z43TCVCWA","target":"record","payload":{"canonical_record":{"source":{"id":"1509.01975","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-09-07T10:26:28Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f81361bb219855bd2b3cf089814c6274633f3c4cfb70ddc7390e2047968a66c8","abstract_canon_sha256":"6bafa2dd911da66268ef3d0d8ba8d2c9671ab3065b090249ce5ca62c95c4f04f"},"schema_version":"1.0"},"canonical_sha256":"93e022dee3437277068cfe79b98aa2b035350ccd0e81df1b5d4ccd506e17fef1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:33:49.991122Z","signature_b64":"wxymDyiChK7HpPZcBOoV7NBrf1jCBO1HHIxtaYlEQ/4Qmgu0XyYIErM+QtJ1VAq73NMD5Mu5gXVNIODM/3jQCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93e022dee3437277068cfe79b98aa2b035350ccd0e81df1b5d4ccd506e17fef1","last_reissued_at":"2026-05-18T01:33:49.990576Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:33:49.990576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.01975","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vgxq51KPUXLT9kJp4EFS7HzBHpzuXhpUVw892wRcX348DuMh/eLLDfQffokWYt3zKUPECJlI4KvWA1r3pCS6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:52:54.037936Z"},"content_sha256":"8f13d213a88d3efa7794e5f41a68180b4762f99c2d89577cdd507b54ab2d45ff","schema_version":"1.0","event_id":"sha256:8f13d213a88d3efa7794e5f41a68180b4762f99c2d89577cdd507b54ab2d45ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SPQCFXXDINZHOBUM7Z43TCVCWA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of van Hove Singularities in Twisted Silicene Multilayers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jincheng Zhuang, Kehui Wu, Lan Chen, Li Wang, Shi Xue Dou, Xiaodong Pi, Xiaolin Wang, Xun Xu, Yi Du, Zhi Li","submitted_at":"2015-09-07T10:26:28Z","abstract_excerpt":"Interlayer interactions perturb the electronic structure of two-dimensional materials and lead to new physical phenomena, such as van Hove singularities and Hofstadter's butterfly pattern. Silicene, the recently discovered two-dimensional form of silicon, is quite unique, in that silicon atoms adopt competing <i>sp</i><sup>2</sup> and <i>sp</i><sup>3</sup> hybridization states leading to a low-buckled structure promising relatively strong interlayer interaction. In multilayer silicene, the stacking order provides an important yet rarely explored degree of freedom for tuning its electronic stru"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.01975","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bFGpIIP0EQhO86boO5V6pTkNZGjTg3g+xB3qJEa/jovuMQpz/exb73WnO233yUPwTEYTVSnjhETa2OGiAxl+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:52:54.038607Z"},"content_sha256":"6ee76a9ff7383ebba8901aa88d0ab9b5f0489897561f9f2320f48c8c8634445e","schema_version":"1.0","event_id":"sha256:6ee76a9ff7383ebba8901aa88d0ab9b5f0489897561f9f2320f48c8c8634445e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SPQCFXXDINZHOBUM7Z43TCVCWA/bundle.json","state_url":"https://pith.science/pith/SPQCFXXDINZHOBUM7Z43TCVCWA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SPQCFXXDINZHOBUM7Z43TCVCWA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T18:52:54Z","links":{"resolver":"https://pith.science/pith/SPQCFXXDINZHOBUM7Z43TCVCWA","bundle":"https://pith.science/pith/SPQCFXXDINZHOBUM7Z43TCVCWA/bundle.json","state":"https://pith.science/pith/SPQCFXXDINZHOBUM7Z43TCVCWA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SPQCFXXDINZHOBUM7Z43TCVCWA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SPQCFXXDINZHOBUM7Z43TCVCWA","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":"6bafa2dd911da66268ef3d0d8ba8d2c9671ab3065b090249ce5ca62c95c4f04f","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-09-07T10:26:28Z","title_canon_sha256":"f81361bb219855bd2b3cf089814c6274633f3c4cfb70ddc7390e2047968a66c8"},"schema_version":"1.0","source":{"id":"1509.01975","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.01975","created_at":"2026-05-18T01:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"1509.01975v1","created_at":"2026-05-18T01:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.01975","created_at":"2026-05-18T01:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"SPQCFXXDINZH","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SPQCFXXDINZHOBUM","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SPQCFXXD","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:6ee76a9ff7383ebba8901aa88d0ab9b5f0489897561f9f2320f48c8c8634445e","target":"graph","created_at":"2026-05-18T01:33:49Z","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":"Interlayer interactions perturb the electronic structure of two-dimensional materials and lead to new physical phenomena, such as van Hove singularities and Hofstadter's butterfly pattern. Silicene, the recently discovered two-dimensional form of silicon, is quite unique, in that silicon atoms adopt competing <i>sp</i><sup>2</sup> and <i>sp</i><sup>3</sup> hybridization states leading to a low-buckled structure promising relatively strong interlayer interaction. In multilayer silicene, the stacking order provides an important yet rarely explored degree of freedom for tuning its electronic stru","authors_text":"Jincheng Zhuang, Kehui Wu, Lan Chen, Li Wang, Shi Xue Dou, Xiaodong Pi, Xiaolin Wang, Xun Xu, Yi Du, Zhi Li","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-09-07T10:26:28Z","title":"Observation of van Hove Singularities in Twisted Silicene Multilayers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.01975","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":"sha256:8f13d213a88d3efa7794e5f41a68180b4762f99c2d89577cdd507b54ab2d45ff","target":"record","created_at":"2026-05-18T01:33:49Z","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":"6bafa2dd911da66268ef3d0d8ba8d2c9671ab3065b090249ce5ca62c95c4f04f","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-09-07T10:26:28Z","title_canon_sha256":"f81361bb219855bd2b3cf089814c6274633f3c4cfb70ddc7390e2047968a66c8"},"schema_version":"1.0","source":{"id":"1509.01975","kind":"arxiv","version":1}},"canonical_sha256":"93e022dee3437277068cfe79b98aa2b035350ccd0e81df1b5d4ccd506e17fef1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93e022dee3437277068cfe79b98aa2b035350ccd0e81df1b5d4ccd506e17fef1","first_computed_at":"2026-05-18T01:33:49.990576Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:33:49.990576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wxymDyiChK7HpPZcBOoV7NBrf1jCBO1HHIxtaYlEQ/4Qmgu0XyYIErM+QtJ1VAq73NMD5Mu5gXVNIODM/3jQCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:33:49.991122Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.01975","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f13d213a88d3efa7794e5f41a68180b4762f99c2d89577cdd507b54ab2d45ff","sha256:6ee76a9ff7383ebba8901aa88d0ab9b5f0489897561f9f2320f48c8c8634445e"],"state_sha256":"93cc9c415856f54bdf6cb15c202de68a0b3949f4810ff168eca12787c419b991"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M/xaedvk16WOx5+i8WLpnrSndAVfth0epg8mljIAVdFeQ0bOBeyCVwUkZ46e+gfj7cIYmCGS59wsJSQjKeTDDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:52:54.042152Z","bundle_sha256":"f0d24ff073d8e16b836107f6bd34bca95bea207c01c3e37624509dfde83b3284"}}