{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:XVHWNOUS72XOHXAEFDQHAKW2PD","short_pith_number":"pith:XVHWNOUS","canonical_record":{"source":{"id":"1110.6562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-10-29T22:17:57Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"62a3823fd273bac5e8b65980d54e570af2faeeda6a7762f354b5ff9fc6bde488","abstract_canon_sha256":"91b23fe915ac170798669f5b848d42e43b5e68b3e495b9e569354596c5538a59"},"schema_version":"1.0"},"canonical_sha256":"bd4f66ba92feaee3dc0428e0702ada78ce563747c691bf8934cd58e24410b572","source":{"kind":"arxiv","id":"1110.6562","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.6562","created_at":"2026-05-18T01:59:50Z"},{"alias_kind":"arxiv_version","alias_value":"1110.6562v2","created_at":"2026-05-18T01:59:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.6562","created_at":"2026-05-18T01:59:50Z"},{"alias_kind":"pith_short_12","alias_value":"XVHWNOUS72XO","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XVHWNOUS72XOHXAE","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XVHWNOUS","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:XVHWNOUS72XOHXAEFDQHAKW2PD","target":"record","payload":{"canonical_record":{"source":{"id":"1110.6562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-10-29T22:17:57Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"62a3823fd273bac5e8b65980d54e570af2faeeda6a7762f354b5ff9fc6bde488","abstract_canon_sha256":"91b23fe915ac170798669f5b848d42e43b5e68b3e495b9e569354596c5538a59"},"schema_version":"1.0"},"canonical_sha256":"bd4f66ba92feaee3dc0428e0702ada78ce563747c691bf8934cd58e24410b572","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:50.116270Z","signature_b64":"9lP4D++5lxtsUZtkbJ3RGPUp11awWuU9WnlzW96zf8MS8WnL7oFg857EQuqCy64nBMjNNaSr0wIA6Co6p+EKAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd4f66ba92feaee3dc0428e0702ada78ce563747c691bf8934cd58e24410b572","last_reissued_at":"2026-05-18T01:59:50.115621Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:50.115621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.6562","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:59:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nz2lDrmlbGaSp/kTMoQEYEfXZWEPf+SKpboF3xvUi9wJckULv8qU28XWu1ZLvEg+k785wRnzGGqIgMJPt+ghDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:49:48.164586Z"},"content_sha256":"bfecf01629c3ed7b7eceb50f8386a02b25ca2acfa7fa76b72abb3239bcfd9c3c","schema_version":"1.0","event_id":"sha256:bfecf01629c3ed7b7eceb50f8386a02b25ca2acfa7fa76b72abb3239bcfd9c3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:XVHWNOUS72XOHXAEFDQHAKW2PD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interface Structure of Graphene on SiC(000-1)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Guowei He, Luxmi, N. Srivastava, R. M. Feenstra","submitted_at":"2011-10-29T22:17:57Z","abstract_excerpt":"Graphene films prepared by heating the SiC(000-1) surface (the C-face of the {0001} surfaces) in vacuum or in a Si-rich environment are compared. It is found that different interface structures occur for the two situations. The former yields a well known 3x3 reconstructed interface, whereas the latter produces an interface with rt(43)xrt(43)-R\\pm7.6 degrees symmetry. This structure is shown to contain a graphene-like layer with properties similar to the 6rt(3)x6rt(3)-R30 degrees \"buffer layer\" that forms on the Si(0001) surface (the Si-face)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.6562","kind":"arxiv","version":2},"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":"2026-05-18T01:59:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iWnF4ZDyXFTBBCQT+uBUqsEOw/IB1Q19Uct7yhtRDapxRpQ3cgbbz9KWlHro3X+pEsJUCMLdEwH9/JAFREobBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:49:48.165257Z"},"content_sha256":"6e34f8da39bde909aab244a2aac9730d81ce01d3e5688a90b43f08a0c2df17e5","schema_version":"1.0","event_id":"sha256:6e34f8da39bde909aab244a2aac9730d81ce01d3e5688a90b43f08a0c2df17e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XVHWNOUS72XOHXAEFDQHAKW2PD/bundle.json","state_url":"https://pith.science/pith/XVHWNOUS72XOHXAEFDQHAKW2PD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XVHWNOUS72XOHXAEFDQHAKW2PD/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":"2026-05-27T07:49:48Z","links":{"resolver":"https://pith.science/pith/XVHWNOUS72XOHXAEFDQHAKW2PD","bundle":"https://pith.science/pith/XVHWNOUS72XOHXAEFDQHAKW2PD/bundle.json","state":"https://pith.science/pith/XVHWNOUS72XOHXAEFDQHAKW2PD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XVHWNOUS72XOHXAEFDQHAKW2PD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:XVHWNOUS72XOHXAEFDQHAKW2PD","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":"91b23fe915ac170798669f5b848d42e43b5e68b3e495b9e569354596c5538a59","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-10-29T22:17:57Z","title_canon_sha256":"62a3823fd273bac5e8b65980d54e570af2faeeda6a7762f354b5ff9fc6bde488"},"schema_version":"1.0","source":{"id":"1110.6562","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.6562","created_at":"2026-05-18T01:59:50Z"},{"alias_kind":"arxiv_version","alias_value":"1110.6562v2","created_at":"2026-05-18T01:59:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.6562","created_at":"2026-05-18T01:59:50Z"},{"alias_kind":"pith_short_12","alias_value":"XVHWNOUS72XO","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XVHWNOUS72XOHXAE","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XVHWNOUS","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:6e34f8da39bde909aab244a2aac9730d81ce01d3e5688a90b43f08a0c2df17e5","target":"graph","created_at":"2026-05-18T01:59:50Z","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":"Graphene films prepared by heating the SiC(000-1) surface (the C-face of the {0001} surfaces) in vacuum or in a Si-rich environment are compared. It is found that different interface structures occur for the two situations. The former yields a well known 3x3 reconstructed interface, whereas the latter produces an interface with rt(43)xrt(43)-R\\pm7.6 degrees symmetry. This structure is shown to contain a graphene-like layer with properties similar to the 6rt(3)x6rt(3)-R30 degrees \"buffer layer\" that forms on the Si(0001) surface (the Si-face).","authors_text":"Guowei He, Luxmi, N. Srivastava, R. M. Feenstra","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-10-29T22:17:57Z","title":"Interface Structure of Graphene on SiC(000-1)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.6562","kind":"arxiv","version":2},"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:bfecf01629c3ed7b7eceb50f8386a02b25ca2acfa7fa76b72abb3239bcfd9c3c","target":"record","created_at":"2026-05-18T01:59:50Z","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":"91b23fe915ac170798669f5b848d42e43b5e68b3e495b9e569354596c5538a59","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-10-29T22:17:57Z","title_canon_sha256":"62a3823fd273bac5e8b65980d54e570af2faeeda6a7762f354b5ff9fc6bde488"},"schema_version":"1.0","source":{"id":"1110.6562","kind":"arxiv","version":2}},"canonical_sha256":"bd4f66ba92feaee3dc0428e0702ada78ce563747c691bf8934cd58e24410b572","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd4f66ba92feaee3dc0428e0702ada78ce563747c691bf8934cd58e24410b572","first_computed_at":"2026-05-18T01:59:50.115621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:50.115621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9lP4D++5lxtsUZtkbJ3RGPUp11awWuU9WnlzW96zf8MS8WnL7oFg857EQuqCy64nBMjNNaSr0wIA6Co6p+EKAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:50.116270Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.6562","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bfecf01629c3ed7b7eceb50f8386a02b25ca2acfa7fa76b72abb3239bcfd9c3c","sha256:6e34f8da39bde909aab244a2aac9730d81ce01d3e5688a90b43f08a0c2df17e5"],"state_sha256":"481916f281f3e8cc48dbe7b6945e408e98c980cd0d0f7ae69fbefbd0d8468f9a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YqpDSeNPqx1Fxw5xbIRQyM8If2pdqTsiuUSnywHzQh/egI6yyIj38Vyhz9Hd/nYxzYbOT+qE8adc1M1nXLDTBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:49:48.168737Z","bundle_sha256":"58a751e06cec1aaec454fa64763dbaa96dbe71d62e9596d6b9f5bc98794e9696"}}