{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:7N4MVVXWNCRYNHA7XQVD3RQT4C","short_pith_number":"pith:7N4MVVXW","canonical_record":{"source":{"id":"1812.05982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-14T15:34:44Z","cross_cats_sorted":[],"title_canon_sha256":"96916876e89a7cfaa5984539407f96f8abb424272beb6cf1a9d0aeffc0613219","abstract_canon_sha256":"a99d85330f35ebbc858f47053ba5e9c6b4104761e6fde99f6cedd452cc522644"},"schema_version":"1.0"},"canonical_sha256":"fb78cad6f668a3869c1fbc2a3dc613e0a9c3390e17642103595b33117767b780","source":{"kind":"arxiv","id":"1812.05982","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.05982","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"arxiv_version","alias_value":"1812.05982v1","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.05982","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"pith_short_12","alias_value":"7N4MVVXWNCRY","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7N4MVVXWNCRYNHA7","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7N4MVVXW","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:7N4MVVXWNCRYNHA7XQVD3RQT4C","target":"record","payload":{"canonical_record":{"source":{"id":"1812.05982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-14T15:34:44Z","cross_cats_sorted":[],"title_canon_sha256":"96916876e89a7cfaa5984539407f96f8abb424272beb6cf1a9d0aeffc0613219","abstract_canon_sha256":"a99d85330f35ebbc858f47053ba5e9c6b4104761e6fde99f6cedd452cc522644"},"schema_version":"1.0"},"canonical_sha256":"fb78cad6f668a3869c1fbc2a3dc613e0a9c3390e17642103595b33117767b780","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:21.206677Z","signature_b64":"8hl1durw+pqWz0GDYkS4TWQbA30yGLloz8jnk+nJTO5zHggPDnFNjaGpwIiJsJmqrAlygm+BrmsRTN+vDAzzDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb78cad6f668a3869c1fbc2a3dc613e0a9c3390e17642103595b33117767b780","last_reissued_at":"2026-05-17T23:51:21.206002Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:21.206002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.05982","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":"2026-05-17T23:51:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oB5A4tJo9NQR6ifjVIpJDc80lIHKm1lxSWY2sncI4VVr765BZNNhayg7JPg1T8vtVwFutf1RRguH4glKzC2yDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T23:23:31.315266Z"},"content_sha256":"71d9811e54a5a8222f2aaa4afca888beb0c6d4ffc16eebeef990bdd5a046cbff","schema_version":"1.0","event_id":"sha256:71d9811e54a5a8222f2aaa4afca888beb0c6d4ffc16eebeef990bdd5a046cbff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:7N4MVVXWNCRYNHA7XQVD3RQT4C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VI3 - a new layered ferromagnetic semiconductor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Danrui Ni, Erik I. Timmons, Jing Tao, Karoline Stolze, R.J. Cava, Ruslan Prozorov, Shu Guo, Tai Kong, Zo\\\"e Yang","submitted_at":"2018-12-14T15:34:44Z","abstract_excerpt":"Two-dimensional (2D) materials are promising candidates for next-generation electronic devices. In this regime, insulating 2D ferromagnets, which remain rare, are of special importance due to their potential for enabling new device architectures. Here we report the discovery of ferromagnetism in a layered van der Waals semiconductor, VI3, which is based on honeycomb vanadium layers separated by an iodine-iodine van der Waals gap. It has a BiI3-type structure (R-3, No.148) at room temperature, and our experimental evidence suggests that it may undergo a subtle structural phase transition at 78 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.05982","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":"2026-05-17T23:51:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QtdV8SubnptYy38jNMQ16puXdnWjlSS02jois5xy9NrJdaIu9bQhgB+bq27b5Kfru5iMUVZdCYoFVQ6LFFPeCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T23:23:31.316267Z"},"content_sha256":"feefcb22a85354d8b7bfe7776421df703e11076c879fd70d7ef04712450f461d","schema_version":"1.0","event_id":"sha256:feefcb22a85354d8b7bfe7776421df703e11076c879fd70d7ef04712450f461d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C/bundle.json","state_url":"https://pith.science/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C/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":"2026-06-06T23:23:31Z","links":{"resolver":"https://pith.science/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C","bundle":"https://pith.science/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C/bundle.json","state":"https://pith.science/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7N4MVVXWNCRYNHA7XQVD3RQT4C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7N4MVVXWNCRYNHA7XQVD3RQT4C","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":"a99d85330f35ebbc858f47053ba5e9c6b4104761e6fde99f6cedd452cc522644","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-14T15:34:44Z","title_canon_sha256":"96916876e89a7cfaa5984539407f96f8abb424272beb6cf1a9d0aeffc0613219"},"schema_version":"1.0","source":{"id":"1812.05982","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.05982","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"arxiv_version","alias_value":"1812.05982v1","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.05982","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"pith_short_12","alias_value":"7N4MVVXWNCRY","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7N4MVVXWNCRYNHA7","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7N4MVVXW","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:feefcb22a85354d8b7bfe7776421df703e11076c879fd70d7ef04712450f461d","target":"graph","created_at":"2026-05-17T23:51:21Z","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":"Two-dimensional (2D) materials are promising candidates for next-generation electronic devices. In this regime, insulating 2D ferromagnets, which remain rare, are of special importance due to their potential for enabling new device architectures. Here we report the discovery of ferromagnetism in a layered van der Waals semiconductor, VI3, which is based on honeycomb vanadium layers separated by an iodine-iodine van der Waals gap. It has a BiI3-type structure (R-3, No.148) at room temperature, and our experimental evidence suggests that it may undergo a subtle structural phase transition at 78 ","authors_text":"Danrui Ni, Erik I. Timmons, Jing Tao, Karoline Stolze, R.J. Cava, Ruslan Prozorov, Shu Guo, Tai Kong, Zo\\\"e Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-14T15:34:44Z","title":"VI3 - a new layered ferromagnetic semiconductor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.05982","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":"sha256:71d9811e54a5a8222f2aaa4afca888beb0c6d4ffc16eebeef990bdd5a046cbff","target":"record","created_at":"2026-05-17T23:51:21Z","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":"a99d85330f35ebbc858f47053ba5e9c6b4104761e6fde99f6cedd452cc522644","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-14T15:34:44Z","title_canon_sha256":"96916876e89a7cfaa5984539407f96f8abb424272beb6cf1a9d0aeffc0613219"},"schema_version":"1.0","source":{"id":"1812.05982","kind":"arxiv","version":1}},"canonical_sha256":"fb78cad6f668a3869c1fbc2a3dc613e0a9c3390e17642103595b33117767b780","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb78cad6f668a3869c1fbc2a3dc613e0a9c3390e17642103595b33117767b780","first_computed_at":"2026-05-17T23:51:21.206002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:21.206002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8hl1durw+pqWz0GDYkS4TWQbA30yGLloz8jnk+nJTO5zHggPDnFNjaGpwIiJsJmqrAlygm+BrmsRTN+vDAzzDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:21.206677Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.05982","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71d9811e54a5a8222f2aaa4afca888beb0c6d4ffc16eebeef990bdd5a046cbff","sha256:feefcb22a85354d8b7bfe7776421df703e11076c879fd70d7ef04712450f461d"],"state_sha256":"9d963f0358f59ac03c05bbb5066be742481c4b8093994bed2e339bbed409f738"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"teduMdXf40AqraXlq+o8dp+LX1KYkZyNvCAQrtFTxYawJgrdCUB+3tUBa0qYX8o8ryyhOmfgmxtkT56XNvDNBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T23:23:31.322590Z","bundle_sha256":"46c15a9ee7448d144e244c675b40522f6540acc3579c1668bfa35ccd21655fa6"}}