{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:YZD27WRYNPGEJ2I6ENEL3325VV","short_pith_number":"pith:YZD27WRY","canonical_record":{"source":{"id":"1802.02197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-06T20:31:38Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"title_canon_sha256":"68069eb91d1b05e1920829ffd447784c062f18ae3e4b38cd352b8c209abfeb68","abstract_canon_sha256":"61c708003ef9bf1d59c8735594bc9ef8da36e7db335bfc180cf2cbbad2255c47"},"schema_version":"1.0"},"canonical_sha256":"c647afda386bcc44e91e2348bdef5dad7e51a1eb580270d61f19894d1574ea57","source":{"kind":"arxiv","id":"1802.02197","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.02197","created_at":"2026-05-18T00:24:09Z"},{"alias_kind":"arxiv_version","alias_value":"1802.02197v1","created_at":"2026-05-18T00:24:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.02197","created_at":"2026-05-18T00:24:09Z"},{"alias_kind":"pith_short_12","alias_value":"YZD27WRYNPGE","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YZD27WRYNPGEJ2I6","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YZD27WRY","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:YZD27WRYNPGEJ2I6ENEL3325VV","target":"record","payload":{"canonical_record":{"source":{"id":"1802.02197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-06T20:31:38Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"title_canon_sha256":"68069eb91d1b05e1920829ffd447784c062f18ae3e4b38cd352b8c209abfeb68","abstract_canon_sha256":"61c708003ef9bf1d59c8735594bc9ef8da36e7db335bfc180cf2cbbad2255c47"},"schema_version":"1.0"},"canonical_sha256":"c647afda386bcc44e91e2348bdef5dad7e51a1eb580270d61f19894d1574ea57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:09.009472Z","signature_b64":"9GWXjKaNz1KfjMXv2T+IgrJp/hbj2FyD/aIaORSuU7rU3MP5aOOkh0/QZ8++7JtSlETDcY5QC8qDwrV2kpxJAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c647afda386bcc44e91e2348bdef5dad7e51a1eb580270d61f19894d1574ea57","last_reissued_at":"2026-05-18T00:24:09.008881Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:09.008881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.02197","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":"2026-05-18T00:24:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"viRkMOwt3AwnBgiKnkmpSre4iZutB7p1DN4IHEKKO4md9m3BLxViz+vRkly1AhlIFjakH/2FJaOFyZPEKl88DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:51:26.709587Z"},"content_sha256":"a5b0ea934b6849aafc7310e964f0451043b543f5fe10cca071f3116a970ee7b8","schema_version":"1.0","event_id":"sha256:a5b0ea934b6849aafc7310e964f0451043b543f5fe10cca071f3116a970ee7b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:YZD27WRYNPGEJ2I6ENEL3325VV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Via Method for Lithography Free Contact and Preservation of 2D Materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.supr-con"],"primary_cat":"cond-mat.mes-hall","authors_text":"Abhay N. Pasupathy, Amirali Zangiabadi, Avishai Benyamini, Cory R. Dean, Daniel Rhodes, Da Wang, Evan J. Telford, James Hone, Katayun Barmak, Kenji Watanabe, Shuang Jia, Takashi Taniguchi, Younghun Jung","submitted_at":"2018-02-06T20:31:38Z","abstract_excerpt":"Atomically thin 2D materials span the common components of electronic circuits as metals, semi-conductors, and insulators, and can manifest correlated phases such as superconductivity, charge density waves, and magnetism. An ongoing challenge in the field is to incorporate these 2D materials into multi-layer hetero-structures with robust electrical contacts while preventing disorder and degradation. In particular, preserving and studying air-sensitive 2D materials has presented a significant challenge since they readily oxidize under atmospheric conditions. We report a new technique for contac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.02197","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":"2026-05-18T00:24:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TRmDs6+o+S9Rh6/rd8TWaSTIEMO9/15Tm2gZER1AuIvwWZS1FabrePgHXDvvpHwyIxkZSxglQ0Lvm/enl1LADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:51:26.710059Z"},"content_sha256":"3a82f84dd0095f3d239036f09954ea3a0d0dc717ea59ff1fe174ac6a92fbe753","schema_version":"1.0","event_id":"sha256:3a82f84dd0095f3d239036f09954ea3a0d0dc717ea59ff1fe174ac6a92fbe753"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YZD27WRYNPGEJ2I6ENEL3325VV/bundle.json","state_url":"https://pith.science/pith/YZD27WRYNPGEJ2I6ENEL3325VV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YZD27WRYNPGEJ2I6ENEL3325VV/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":"2026-06-04T06:51:26Z","links":{"resolver":"https://pith.science/pith/YZD27WRYNPGEJ2I6ENEL3325VV","bundle":"https://pith.science/pith/YZD27WRYNPGEJ2I6ENEL3325VV/bundle.json","state":"https://pith.science/pith/YZD27WRYNPGEJ2I6ENEL3325VV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YZD27WRYNPGEJ2I6ENEL3325VV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YZD27WRYNPGEJ2I6ENEL3325VV","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":"61c708003ef9bf1d59c8735594bc9ef8da36e7db335bfc180cf2cbbad2255c47","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-06T20:31:38Z","title_canon_sha256":"68069eb91d1b05e1920829ffd447784c062f18ae3e4b38cd352b8c209abfeb68"},"schema_version":"1.0","source":{"id":"1802.02197","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.02197","created_at":"2026-05-18T00:24:09Z"},{"alias_kind":"arxiv_version","alias_value":"1802.02197v1","created_at":"2026-05-18T00:24:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.02197","created_at":"2026-05-18T00:24:09Z"},{"alias_kind":"pith_short_12","alias_value":"YZD27WRYNPGE","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YZD27WRYNPGEJ2I6","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YZD27WRY","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:3a82f84dd0095f3d239036f09954ea3a0d0dc717ea59ff1fe174ac6a92fbe753","target":"graph","created_at":"2026-05-18T00:24:09Z","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":"Atomically thin 2D materials span the common components of electronic circuits as metals, semi-conductors, and insulators, and can manifest correlated phases such as superconductivity, charge density waves, and magnetism. An ongoing challenge in the field is to incorporate these 2D materials into multi-layer hetero-structures with robust electrical contacts while preventing disorder and degradation. In particular, preserving and studying air-sensitive 2D materials has presented a significant challenge since they readily oxidize under atmospheric conditions. We report a new technique for contac","authors_text":"Abhay N. Pasupathy, Amirali Zangiabadi, Avishai Benyamini, Cory R. Dean, Daniel Rhodes, Da Wang, Evan J. Telford, James Hone, Katayun Barmak, Kenji Watanabe, Shuang Jia, Takashi Taniguchi, Younghun Jung","cross_cats":["cond-mat.mtrl-sci","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-06T20:31:38Z","title":"Via Method for Lithography Free Contact and Preservation of 2D Materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.02197","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:a5b0ea934b6849aafc7310e964f0451043b543f5fe10cca071f3116a970ee7b8","target":"record","created_at":"2026-05-18T00:24:09Z","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":"61c708003ef9bf1d59c8735594bc9ef8da36e7db335bfc180cf2cbbad2255c47","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-06T20:31:38Z","title_canon_sha256":"68069eb91d1b05e1920829ffd447784c062f18ae3e4b38cd352b8c209abfeb68"},"schema_version":"1.0","source":{"id":"1802.02197","kind":"arxiv","version":1}},"canonical_sha256":"c647afda386bcc44e91e2348bdef5dad7e51a1eb580270d61f19894d1574ea57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c647afda386bcc44e91e2348bdef5dad7e51a1eb580270d61f19894d1574ea57","first_computed_at":"2026-05-18T00:24:09.008881Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:09.008881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9GWXjKaNz1KfjMXv2T+IgrJp/hbj2FyD/aIaORSuU7rU3MP5aOOkh0/QZ8++7JtSlETDcY5QC8qDwrV2kpxJAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:09.009472Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.02197","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5b0ea934b6849aafc7310e964f0451043b543f5fe10cca071f3116a970ee7b8","sha256:3a82f84dd0095f3d239036f09954ea3a0d0dc717ea59ff1fe174ac6a92fbe753"],"state_sha256":"d005cf502c2dc3c6071ec49b747aa068bb043b1fc2454a38e710534753e639c2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7uhV9utFo7ihDHDa9f93X6V+D8OOSp9lQBjKfdHIl6JsA2lqrEckjHUayX/sEhp7qgYvspyd3WRlJuWQgzmKBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T06:51:26.712734Z","bundle_sha256":"431e20bbf14409da9e5e197513ea560acc9e6e6467cddd3ebeee34e51435da69"}}