{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:G6NGPOEO544Q7FUQIDFBUJBEWZ","short_pith_number":"pith:G6NGPOEO","canonical_record":{"source":{"id":"1305.3558","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-05-15T17:32:26Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"8cb502161f874c19e278c6d2e2eeeb7e35348e742482b893ddb30bbcf6edc052","abstract_canon_sha256":"6a44228f1f31a7864c656e5f367b4b4a6856005ad788c77997e15cb956e36e86"},"schema_version":"1.0"},"canonical_sha256":"379a67b88eef390f969040ca1a2424b656069a85130335bc62fbf7403d87f586","source":{"kind":"arxiv","id":"1305.3558","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3558","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3558v3","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3558","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"G6NGPOEO544Q","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"G6NGPOEO544Q7FUQ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"G6NGPOEO","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:G6NGPOEO544Q7FUQIDFBUJBEWZ","target":"record","payload":{"canonical_record":{"source":{"id":"1305.3558","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-05-15T17:32:26Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"8cb502161f874c19e278c6d2e2eeeb7e35348e742482b893ddb30bbcf6edc052","abstract_canon_sha256":"6a44228f1f31a7864c656e5f367b4b4a6856005ad788c77997e15cb956e36e86"},"schema_version":"1.0"},"canonical_sha256":"379a67b88eef390f969040ca1a2424b656069a85130335bc62fbf7403d87f586","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:07:42.309786Z","signature_b64":"TqrQ58qlr9HbnWoMGCf+eLP3xb3zcCzc5GKbAxJgs5opHXiUpW8asADrB6D3GqETjM3g6UQm/54Fx7bd0hZbCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"379a67b88eef390f969040ca1a2424b656069a85130335bc62fbf7403d87f586","last_reissued_at":"2026-05-18T03:07:42.309237Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:07:42.309237Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.3558","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i/Td0MVGM81UTYVS2zel1Dv8DzjEoJYpJgx1Do3Q9V4VDjyhxgYj4M+HzV+wZ4+qoWwr9lDMAZcwur+6TrPFBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:00:36.037512Z"},"content_sha256":"12b3064056f9ea90bc3f8779065f0701b1cc667f9fca696a3ff77e134e21f212","schema_version":"1.0","event_id":"sha256:12b3064056f9ea90bc3f8779065f0701b1cc667f9fca696a3ff77e134e21f212"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:G6NGPOEO544Q7FUQIDFBUJBEWZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Termination dependent topological surface states of the natural superlattice phase Bi$_4$Se$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"A.Fedorov, A.P.Weber, A.Yazdani, H.Beidenkopf, Huiwen Ji, I.K.Drozdov, J.T.Sadowski, L.M.Schoop, Q.D.Gibson, R.J.Cava, S.Nadj-Perge, T.Valla","submitted_at":"2013-05-15T17:32:26Z","abstract_excerpt":"We describe the topological surface states of Bi$_4$Se$_3$, a compound in the infinitely adaptive Bi$_2$-Bi$_2$Se$_3$ natural superlattice phase series, determined by a combination of experimental and theoretical methods. Two observable cleavage surfaces, terminating at Bi or Se, are characterized by angle resolved photoelectron spectroscopy and scanning tunneling microscopy, and modeled by ab-initio density functional theory calculations. Topological surface states are observed on both surfaces, but with markedly different dispersions and Kramers point energies. Bi$_4$Se$_3$ therefore represe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3558","kind":"arxiv","version":3},"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":"2026-05-18T03:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hi8C6sOou/NjcE+RIoFWEsELgMjkBkNegUUOC7/kYMptesdQqf+dTfEopbxcmsG7B9C9Au3qgHuuEhLOnTWuBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:00:36.037865Z"},"content_sha256":"cc9764ff4be5fcff45040f532c087bc262c385ee86c20512760453061724fc07","schema_version":"1.0","event_id":"sha256:cc9764ff4be5fcff45040f532c087bc262c385ee86c20512760453061724fc07"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ/bundle.json","state_url":"https://pith.science/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ/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":"2026-05-28T03:00:36Z","links":{"resolver":"https://pith.science/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ","bundle":"https://pith.science/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ/bundle.json","state":"https://pith.science/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G6NGPOEO544Q7FUQIDFBUJBEWZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:G6NGPOEO544Q7FUQIDFBUJBEWZ","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":"6a44228f1f31a7864c656e5f367b4b4a6856005ad788c77997e15cb956e36e86","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-05-15T17:32:26Z","title_canon_sha256":"8cb502161f874c19e278c6d2e2eeeb7e35348e742482b893ddb30bbcf6edc052"},"schema_version":"1.0","source":{"id":"1305.3558","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3558","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3558v3","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3558","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"G6NGPOEO544Q","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"G6NGPOEO544Q7FUQ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"G6NGPOEO","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:cc9764ff4be5fcff45040f532c087bc262c385ee86c20512760453061724fc07","target":"graph","created_at":"2026-05-18T03:07:42Z","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 describe the topological surface states of Bi$_4$Se$_3$, a compound in the infinitely adaptive Bi$_2$-Bi$_2$Se$_3$ natural superlattice phase series, determined by a combination of experimental and theoretical methods. Two observable cleavage surfaces, terminating at Bi or Se, are characterized by angle resolved photoelectron spectroscopy and scanning tunneling microscopy, and modeled by ab-initio density functional theory calculations. Topological surface states are observed on both surfaces, but with markedly different dispersions and Kramers point energies. Bi$_4$Se$_3$ therefore represe","authors_text":"A.Fedorov, A.P.Weber, A.Yazdani, H.Beidenkopf, Huiwen Ji, I.K.Drozdov, J.T.Sadowski, L.M.Schoop, Q.D.Gibson, R.J.Cava, S.Nadj-Perge, T.Valla","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-05-15T17:32:26Z","title":"Termination dependent topological surface states of the natural superlattice phase Bi$_4$Se$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3558","kind":"arxiv","version":3},"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":"sha256:12b3064056f9ea90bc3f8779065f0701b1cc667f9fca696a3ff77e134e21f212","target":"record","created_at":"2026-05-18T03:07:42Z","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":"6a44228f1f31a7864c656e5f367b4b4a6856005ad788c77997e15cb956e36e86","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-05-15T17:32:26Z","title_canon_sha256":"8cb502161f874c19e278c6d2e2eeeb7e35348e742482b893ddb30bbcf6edc052"},"schema_version":"1.0","source":{"id":"1305.3558","kind":"arxiv","version":3}},"canonical_sha256":"379a67b88eef390f969040ca1a2424b656069a85130335bc62fbf7403d87f586","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"379a67b88eef390f969040ca1a2424b656069a85130335bc62fbf7403d87f586","first_computed_at":"2026-05-18T03:07:42.309237Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:07:42.309237Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TqrQ58qlr9HbnWoMGCf+eLP3xb3zcCzc5GKbAxJgs5opHXiUpW8asADrB6D3GqETjM3g6UQm/54Fx7bd0hZbCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:07:42.309786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.3558","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12b3064056f9ea90bc3f8779065f0701b1cc667f9fca696a3ff77e134e21f212","sha256:cc9764ff4be5fcff45040f532c087bc262c385ee86c20512760453061724fc07"],"state_sha256":"fa326084f04a6fedb8b21d7534fb55219d2b25c70c81d5f8e5d6745036d5e670"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kiA1/RKO2Fh68EoBhQWcTMi2KGDed+VtwRUySCv4+shCkAsKWwY63xepzISukS7kyB17xsluiI3WSTe70W4yCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:00:36.039795Z","bundle_sha256":"d58cbb88c0ffa72f0386dbd05bf1b981259dfbcb56eec3df1557d6dc8962f7a2"}}