{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QDJFRHUBUMBZM37G5NW66C4HZF","short_pith_number":"pith:QDJFRHUB","canonical_record":{"source":{"id":"1810.03903","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-09T10:52:28Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph"],"title_canon_sha256":"f17fdc2adab46da9a9f57782a2aa4e69eaf6fdf76ea8c246c0c85770aa8d234d","abstract_canon_sha256":"f6e45e1950f5f31f5c0728a516b0baadca7f1e0b35cca290b6c65b5f6e72e141"},"schema_version":"1.0"},"canonical_sha256":"80d2589e81a303966fe6eb6def0b87c96a1084d5706bd7ba3b341dd138e070cf","source":{"kind":"arxiv","id":"1810.03903","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.03903","created_at":"2026-05-17T23:56:09Z"},{"alias_kind":"arxiv_version","alias_value":"1810.03903v3","created_at":"2026-05-17T23:56:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.03903","created_at":"2026-05-17T23:56:09Z"},{"alias_kind":"pith_short_12","alias_value":"QDJFRHUBUMBZ","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QDJFRHUBUMBZM37G","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QDJFRHUB","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QDJFRHUBUMBZM37G5NW66C4HZF","target":"record","payload":{"canonical_record":{"source":{"id":"1810.03903","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-09T10:52:28Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph"],"title_canon_sha256":"f17fdc2adab46da9a9f57782a2aa4e69eaf6fdf76ea8c246c0c85770aa8d234d","abstract_canon_sha256":"f6e45e1950f5f31f5c0728a516b0baadca7f1e0b35cca290b6c65b5f6e72e141"},"schema_version":"1.0"},"canonical_sha256":"80d2589e81a303966fe6eb6def0b87c96a1084d5706bd7ba3b341dd138e070cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:09.495961Z","signature_b64":"lWXAgdwugPKKnLUUBnqoRUBLB578WxFEWH6I4B8jy5Q+b05Yw5bl5L/Rtt5ryq4vtBy6+3W/RzbMbvIjpnbFDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80d2589e81a303966fe6eb6def0b87c96a1084d5706bd7ba3b341dd138e070cf","last_reissued_at":"2026-05-17T23:56:09.495414Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:09.495414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.03903","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":"2026-05-17T23:56:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MUfSs76p3TGgeNJJf9tyrT+CsvmWrPswZbMITqY7hCh7y2ajSphUVu02gasZwPO5bEisOMPnZGvl2b9Ry39yBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T23:08:07.445364Z"},"content_sha256":"972b7e2baf5fb4b019a2b60926f2aa29837b8370820cb50de6abe2c0f7ec9143","schema_version":"1.0","event_id":"sha256:972b7e2baf5fb4b019a2b60926f2aa29837b8370820cb50de6abe2c0f7ec9143"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QDJFRHUBUMBZM37G5NW66C4HZF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strain-engineering of twist-angle in graphene/hBN superlattice devices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.app-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Adolfo De Sanctis, Freddie Withers, Jake D. Mehew, Monica F. Craciun, Saad Alkhalifa, Saverio Russo","submitted_at":"2018-10-09T10:52:28Z","abstract_excerpt":"The observation of novel physical phenomena such as Hofstadter's butterfly, topological currents and unconventional superconductivity in graphene have been enabled by the replacement of SiO$_2$ with hexagonal Boron Nitride (hBN) as a substrate and by the ability to form superlattices in graphene/hBN heterostructures. These devices are commonly made by etching the graphene into a Hall-bar shape with metal contacts. The deposition of metal electrodes, the design and specific configuration of contacts can have profound effects on the electronic properties of the devices possibly even affecting th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.03903","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":"2026-05-17T23:56:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ElG5uViv4RYZCh5tE3+D9BiIf1b0YLniUOlPcjBCHq3z3xRemOZDiQRxd+bzvjF+Z6BA8IjsQHjp41Znr2+jAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T23:08:07.445756Z"},"content_sha256":"768693ac2b64f6cd08fa9dd983023c632e3f70b7d8c0a6c7daa48bfb2261c39d","schema_version":"1.0","event_id":"sha256:768693ac2b64f6cd08fa9dd983023c632e3f70b7d8c0a6c7daa48bfb2261c39d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QDJFRHUBUMBZM37G5NW66C4HZF/bundle.json","state_url":"https://pith.science/pith/QDJFRHUBUMBZM37G5NW66C4HZF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QDJFRHUBUMBZM37G5NW66C4HZF/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":"2026-05-28T23:08:07Z","links":{"resolver":"https://pith.science/pith/QDJFRHUBUMBZM37G5NW66C4HZF","bundle":"https://pith.science/pith/QDJFRHUBUMBZM37G5NW66C4HZF/bundle.json","state":"https://pith.science/pith/QDJFRHUBUMBZM37G5NW66C4HZF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QDJFRHUBUMBZM37G5NW66C4HZF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QDJFRHUBUMBZM37G5NW66C4HZF","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":"f6e45e1950f5f31f5c0728a516b0baadca7f1e0b35cca290b6c65b5f6e72e141","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-09T10:52:28Z","title_canon_sha256":"f17fdc2adab46da9a9f57782a2aa4e69eaf6fdf76ea8c246c0c85770aa8d234d"},"schema_version":"1.0","source":{"id":"1810.03903","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.03903","created_at":"2026-05-17T23:56:09Z"},{"alias_kind":"arxiv_version","alias_value":"1810.03903v3","created_at":"2026-05-17T23:56:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.03903","created_at":"2026-05-17T23:56:09Z"},{"alias_kind":"pith_short_12","alias_value":"QDJFRHUBUMBZ","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QDJFRHUBUMBZM37G","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QDJFRHUB","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:768693ac2b64f6cd08fa9dd983023c632e3f70b7d8c0a6c7daa48bfb2261c39d","target":"graph","created_at":"2026-05-17T23:56:09Z","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":"The observation of novel physical phenomena such as Hofstadter's butterfly, topological currents and unconventional superconductivity in graphene have been enabled by the replacement of SiO$_2$ with hexagonal Boron Nitride (hBN) as a substrate and by the ability to form superlattices in graphene/hBN heterostructures. These devices are commonly made by etching the graphene into a Hall-bar shape with metal contacts. The deposition of metal electrodes, the design and specific configuration of contacts can have profound effects on the electronic properties of the devices possibly even affecting th","authors_text":"Adolfo De Sanctis, Freddie Withers, Jake D. Mehew, Monica F. Craciun, Saad Alkhalifa, Saverio Russo","cross_cats":["cond-mat.mtrl-sci","physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-09T10:52:28Z","title":"Strain-engineering of twist-angle in graphene/hBN superlattice devices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.03903","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":"sha256:972b7e2baf5fb4b019a2b60926f2aa29837b8370820cb50de6abe2c0f7ec9143","target":"record","created_at":"2026-05-17T23:56:09Z","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":"f6e45e1950f5f31f5c0728a516b0baadca7f1e0b35cca290b6c65b5f6e72e141","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-09T10:52:28Z","title_canon_sha256":"f17fdc2adab46da9a9f57782a2aa4e69eaf6fdf76ea8c246c0c85770aa8d234d"},"schema_version":"1.0","source":{"id":"1810.03903","kind":"arxiv","version":3}},"canonical_sha256":"80d2589e81a303966fe6eb6def0b87c96a1084d5706bd7ba3b341dd138e070cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80d2589e81a303966fe6eb6def0b87c96a1084d5706bd7ba3b341dd138e070cf","first_computed_at":"2026-05-17T23:56:09.495414Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:09.495414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lWXAgdwugPKKnLUUBnqoRUBLB578WxFEWH6I4B8jy5Q+b05Yw5bl5L/Rtt5ryq4vtBy6+3W/RzbMbvIjpnbFDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:09.495961Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.03903","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:972b7e2baf5fb4b019a2b60926f2aa29837b8370820cb50de6abe2c0f7ec9143","sha256:768693ac2b64f6cd08fa9dd983023c632e3f70b7d8c0a6c7daa48bfb2261c39d"],"state_sha256":"625ba067bb50074f2cf406109c4b0271dd437303ece0d3a7c49cff25714dcd99"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pExUA53Vo3SzqBjq4NrdcHpPxJMox35v7WXYiYHvse/Ve3qf0xw2ekMiX2roaNn7Z4A+cEY1+2IurA+WpB5IAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T23:08:07.448299Z","bundle_sha256":"9ca103a4736e6d0c0113b8aa14ce50bbc2f84b4482ea5b6f7bdb0800028e875b"}}