{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PXZOFVCBWI7H5MYOWUNVHFOJHS","short_pith_number":"pith:PXZOFVCB","canonical_record":{"source":{"id":"2008.07552","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-17T18:00:37Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"2b475279b10d9740143006692a9933c8c8736eb7be20007bd9595884848063eb","abstract_canon_sha256":"ef714b40a3994870c6413c1f51c2f1cf1ed9b28e1a534b3c1d15aa59174a05e8"},"schema_version":"1.0"},"canonical_sha256":"7df2e2d441b23e7eb30eb51b5395c93cbe69a0eb25042fb7dba3abf10a62ac63","source":{"kind":"arxiv","id":"2008.07552","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.07552","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"arxiv_version","alias_value":"2008.07552v1","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.07552","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"pith_short_12","alias_value":"PXZOFVCBWI7H","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"pith_short_16","alias_value":"PXZOFVCBWI7H5MYO","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"pith_short_8","alias_value":"PXZOFVCB","created_at":"2026-07-05T02:40:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PXZOFVCBWI7H5MYOWUNVHFOJHS","target":"record","payload":{"canonical_record":{"source":{"id":"2008.07552","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-17T18:00:37Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"2b475279b10d9740143006692a9933c8c8736eb7be20007bd9595884848063eb","abstract_canon_sha256":"ef714b40a3994870c6413c1f51c2f1cf1ed9b28e1a534b3c1d15aa59174a05e8"},"schema_version":"1.0"},"canonical_sha256":"7df2e2d441b23e7eb30eb51b5395c93cbe69a0eb25042fb7dba3abf10a62ac63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:40:28.471257Z","signature_b64":"i5JmbRwVFczkOihLRdkKrOJkoJlr5fiNOUOcNv2XWF4f1rEc+fO1C7dkMc4Qg/JeoaYLnlkcUfgLGNgn3QfIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7df2e2d441b23e7eb30eb51b5395c93cbe69a0eb25042fb7dba3abf10a62ac63","last_reissued_at":"2026-07-05T02:40:28.470854Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:40:28.470854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.07552","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":"2026-07-05T02:40:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"riB8KD4/yIvI2LS3Dd7UaH+nYPJRe9V7CgRszmUInTk1vyYHVEq2LJYEs9/UW+SDd1CfBfoXpOHeF0Wjwg4NAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T16:34:25.334334Z"},"content_sha256":"f6b93ba2a330a7e1ebb551041e971b9cccbd95497090b9889339f11edd55ef0a","schema_version":"1.0","event_id":"sha256:f6b93ba2a330a7e1ebb551041e971b9cccbd95497090b9889339f11edd55ef0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PXZOFVCBWI7H5MYOWUNVHFOJHS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopy of a Tunable Moir\\'e System with a Correlated and Topological Flat Band","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Ali Yazdani, Ashvin Vishwanath, Cheng-Li Chiu, Gelareh Farahi, Jong Yeon Lee, Kenji Watanabe, Takashi Taniguchi, Xiaomeng Liu","submitted_at":"2020-08-17T18:00:37Z","abstract_excerpt":"Moir\\'e superlattices created by the twisted stacking of two-dimensional crystalline monolayers can host electronic bands with flat energy dispersion in which interaction among electrons is strongly enhanced. These superlattices can also create non-trivial electronic band topologies making them a platform for study of many-body topological quantum states. Among the moir\\'e systems realized to date, there are those predicted to have band structures and properties which can be controlled with a perpendicular electric field. The twisted double bilayer graphene (TDBG), where two Bernal bilayer gra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.07552","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.07552/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:40:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZRX1omlGD7Jydl5mI6KtVIUV/hTcqJeBh1TThW6KL+E/XI9syidjKHB/AYGeAFbeTMyXVfLGeRhetjus3cOhCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T16:34:25.334710Z"},"content_sha256":"ec74fdd501128c9a57eb029d71c9d10406bfaffa5c70aae725307770cb31730b","schema_version":"1.0","event_id":"sha256:ec74fdd501128c9a57eb029d71c9d10406bfaffa5c70aae725307770cb31730b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS/bundle.json","state_url":"https://pith.science/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS/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":"2026-07-10T16:34:25Z","links":{"resolver":"https://pith.science/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS","bundle":"https://pith.science/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS/bundle.json","state":"https://pith.science/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PXZOFVCBWI7H5MYOWUNVHFOJHS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PXZOFVCBWI7H5MYOWUNVHFOJHS","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":"ef714b40a3994870c6413c1f51c2f1cf1ed9b28e1a534b3c1d15aa59174a05e8","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-17T18:00:37Z","title_canon_sha256":"2b475279b10d9740143006692a9933c8c8736eb7be20007bd9595884848063eb"},"schema_version":"1.0","source":{"id":"2008.07552","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.07552","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"arxiv_version","alias_value":"2008.07552v1","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.07552","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"pith_short_12","alias_value":"PXZOFVCBWI7H","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"pith_short_16","alias_value":"PXZOFVCBWI7H5MYO","created_at":"2026-07-05T02:40:28Z"},{"alias_kind":"pith_short_8","alias_value":"PXZOFVCB","created_at":"2026-07-05T02:40:28Z"}],"graph_snapshots":[{"event_id":"sha256:ec74fdd501128c9a57eb029d71c9d10406bfaffa5c70aae725307770cb31730b","target":"graph","created_at":"2026-07-05T02:40:28Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.07552/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Moir\\'e superlattices created by the twisted stacking of two-dimensional crystalline monolayers can host electronic bands with flat energy dispersion in which interaction among electrons is strongly enhanced. These superlattices can also create non-trivial electronic band topologies making them a platform for study of many-body topological quantum states. Among the moir\\'e systems realized to date, there are those predicted to have band structures and properties which can be controlled with a perpendicular electric field. The twisted double bilayer graphene (TDBG), where two Bernal bilayer gra","authors_text":"Ali Yazdani, Ashvin Vishwanath, Cheng-Li Chiu, Gelareh Farahi, Jong Yeon Lee, Kenji Watanabe, Takashi Taniguchi, Xiaomeng Liu","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-17T18:00:37Z","title":"Spectroscopy of a Tunable Moir\\'e System with a Correlated and Topological Flat Band"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.07552","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:f6b93ba2a330a7e1ebb551041e971b9cccbd95497090b9889339f11edd55ef0a","target":"record","created_at":"2026-07-05T02:40:28Z","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":"ef714b40a3994870c6413c1f51c2f1cf1ed9b28e1a534b3c1d15aa59174a05e8","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-17T18:00:37Z","title_canon_sha256":"2b475279b10d9740143006692a9933c8c8736eb7be20007bd9595884848063eb"},"schema_version":"1.0","source":{"id":"2008.07552","kind":"arxiv","version":1}},"canonical_sha256":"7df2e2d441b23e7eb30eb51b5395c93cbe69a0eb25042fb7dba3abf10a62ac63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7df2e2d441b23e7eb30eb51b5395c93cbe69a0eb25042fb7dba3abf10a62ac63","first_computed_at":"2026-07-05T02:40:28.470854Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:40:28.470854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i5JmbRwVFczkOihLRdkKrOJkoJlr5fiNOUOcNv2XWF4f1rEc+fO1C7dkMc4Qg/JeoaYLnlkcUfgLGNgn3QfIAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:40:28.471257Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.07552","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6b93ba2a330a7e1ebb551041e971b9cccbd95497090b9889339f11edd55ef0a","sha256:ec74fdd501128c9a57eb029d71c9d10406bfaffa5c70aae725307770cb31730b"],"state_sha256":"573d0cc05a043eb238c3c2773d1b6357682936596faee3223e4c34ffef677f87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KUKIEYCL2zS/cro4LJxnMKr+5r7ymbbYGJ5Hh1k/nNQO4a0zIwtvnAxmsbYZloZPPn9QUUVYYVFVvNs1vj4SDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T16:34:25.337096Z","bundle_sha256":"c9abe61083c8becdf86cf6f265f30f3661f7872d23d2648bbd541e092d85683a"}}