{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:CCZXM6A6D2LTQYRHUPOCCLNKGU","short_pith_number":"pith:CCZXM6A6","canonical_record":{"source":{"id":"1107.0085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-30T23:24:00Z","cross_cats_sorted":[],"title_canon_sha256":"94a571a34c5291fc71738b48ca714bc5d85c49a6fcc93d26ef493dd80de65393","abstract_canon_sha256":"6df39556476f6bc13daf049bc7eb8f5ac0446ff141628e912693363be0a1cb3c"},"schema_version":"1.0"},"canonical_sha256":"10b376781e1e97386227a3dc212daa352eeaa86b9df9fa7c3949644178afdb63","source":{"kind":"arxiv","id":"1107.0085","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.0085","created_at":"2026-05-18T04:19:02Z"},{"alias_kind":"arxiv_version","alias_value":"1107.0085v1","created_at":"2026-05-18T04:19:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.0085","created_at":"2026-05-18T04:19:02Z"},{"alias_kind":"pith_short_12","alias_value":"CCZXM6A6D2LT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CCZXM6A6D2LTQYRH","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CCZXM6A6","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:CCZXM6A6D2LTQYRHUPOCCLNKGU","target":"record","payload":{"canonical_record":{"source":{"id":"1107.0085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-30T23:24:00Z","cross_cats_sorted":[],"title_canon_sha256":"94a571a34c5291fc71738b48ca714bc5d85c49a6fcc93d26ef493dd80de65393","abstract_canon_sha256":"6df39556476f6bc13daf049bc7eb8f5ac0446ff141628e912693363be0a1cb3c"},"schema_version":"1.0"},"canonical_sha256":"10b376781e1e97386227a3dc212daa352eeaa86b9df9fa7c3949644178afdb63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:19:02.673925Z","signature_b64":"wmEWV9Cy9NeeI1ko2IEBSnHQ2NRJxuMGsHdzzscdD9Alyjl4K/1cc0iLavFHUZ9DzJqryy9QSZrmaVRUkRx8Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"10b376781e1e97386227a3dc212daa352eeaa86b9df9fa7c3949644178afdb63","last_reissued_at":"2026-05-18T04:19:02.673293Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:19:02.673293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.0085","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":"2026-05-18T04:19:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZHmWDGMdj6vcbv6MImwbL1yxEWvD/DNeMp6CbT7fcYiNQs06Sz6gqNFiGbrTMboe1ckFJir3/TsIXit2HgUOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:30:51.619305Z"},"content_sha256":"b7df4f04187bc8d3521bfaea635720e0120b039d77907bb39808ae263e4ca96b","schema_version":"1.0","event_id":"sha256:b7df4f04187bc8d3521bfaea635720e0120b039d77907bb39808ae263e4ca96b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:CCZXM6A6D2LTQYRHUPOCCLNKGU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Three-Fold Diffraction Symmetry in Epitaxial Graphene and the SiC Substrate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alessandra Lanzara, Andreas K. Schmid, David A. Siegel, Farid el Gabaly, Kevin F. McCarty, Shuyun Zhou","submitted_at":"2011-06-30T23:24:00Z","abstract_excerpt":"The crystallographic symmetries and spatial distribution of stacking domains in graphene films on SiC have been studied by low energy electron diffraction (LEED) and dark field imaging in a low energy electron microscope (LEEM). We find that the graphene diffraction spots from 2 and 3 atomic layers of graphene have 3-fold symmetry consistent with AB (Bernal) stacking of the layers. On the contrary, graphene diffraction spots from the buffer layer and monolayer graphene have apparent 6-fold symmetry, although the 3-fold nature of the satellite spots indicates a more complex periodicity in the g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.0085","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":"2026-05-18T04:19:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vKaYx8O1unvTVaZBBGzEMli7CeIVa4tbX4zfUrAObb7LRywXnfOsWazT/DKKKhnz8fBw7kWdg4TY0nhjp0dGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:30:51.620109Z"},"content_sha256":"614aee4bcab982d747c668854fd3acd34da8510e6bfe82bbc3ae53b86a7ced5f","schema_version":"1.0","event_id":"sha256:614aee4bcab982d747c668854fd3acd34da8510e6bfe82bbc3ae53b86a7ced5f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU/bundle.json","state_url":"https://pith.science/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU/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":"2026-06-01T01:30:51Z","links":{"resolver":"https://pith.science/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU","bundle":"https://pith.science/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU/bundle.json","state":"https://pith.science/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CCZXM6A6D2LTQYRHUPOCCLNKGU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:CCZXM6A6D2LTQYRHUPOCCLNKGU","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":"6df39556476f6bc13daf049bc7eb8f5ac0446ff141628e912693363be0a1cb3c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-30T23:24:00Z","title_canon_sha256":"94a571a34c5291fc71738b48ca714bc5d85c49a6fcc93d26ef493dd80de65393"},"schema_version":"1.0","source":{"id":"1107.0085","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.0085","created_at":"2026-05-18T04:19:02Z"},{"alias_kind":"arxiv_version","alias_value":"1107.0085v1","created_at":"2026-05-18T04:19:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.0085","created_at":"2026-05-18T04:19:02Z"},{"alias_kind":"pith_short_12","alias_value":"CCZXM6A6D2LT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CCZXM6A6D2LTQYRH","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CCZXM6A6","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:614aee4bcab982d747c668854fd3acd34da8510e6bfe82bbc3ae53b86a7ced5f","target":"graph","created_at":"2026-05-18T04:19:02Z","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 crystallographic symmetries and spatial distribution of stacking domains in graphene films on SiC have been studied by low energy electron diffraction (LEED) and dark field imaging in a low energy electron microscope (LEEM). We find that the graphene diffraction spots from 2 and 3 atomic layers of graphene have 3-fold symmetry consistent with AB (Bernal) stacking of the layers. On the contrary, graphene diffraction spots from the buffer layer and monolayer graphene have apparent 6-fold symmetry, although the 3-fold nature of the satellite spots indicates a more complex periodicity in the g","authors_text":"Alessandra Lanzara, Andreas K. Schmid, David A. Siegel, Farid el Gabaly, Kevin F. McCarty, Shuyun Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-30T23:24:00Z","title":"Three-Fold Diffraction Symmetry in Epitaxial Graphene and the SiC Substrate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.0085","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:b7df4f04187bc8d3521bfaea635720e0120b039d77907bb39808ae263e4ca96b","target":"record","created_at":"2026-05-18T04:19:02Z","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":"6df39556476f6bc13daf049bc7eb8f5ac0446ff141628e912693363be0a1cb3c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-30T23:24:00Z","title_canon_sha256":"94a571a34c5291fc71738b48ca714bc5d85c49a6fcc93d26ef493dd80de65393"},"schema_version":"1.0","source":{"id":"1107.0085","kind":"arxiv","version":1}},"canonical_sha256":"10b376781e1e97386227a3dc212daa352eeaa86b9df9fa7c3949644178afdb63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"10b376781e1e97386227a3dc212daa352eeaa86b9df9fa7c3949644178afdb63","first_computed_at":"2026-05-18T04:19:02.673293Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:19:02.673293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wmEWV9Cy9NeeI1ko2IEBSnHQ2NRJxuMGsHdzzscdD9Alyjl4K/1cc0iLavFHUZ9DzJqryy9QSZrmaVRUkRx8Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:19:02.673925Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.0085","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b7df4f04187bc8d3521bfaea635720e0120b039d77907bb39808ae263e4ca96b","sha256:614aee4bcab982d747c668854fd3acd34da8510e6bfe82bbc3ae53b86a7ced5f"],"state_sha256":"1fdeafab399bf2ae2771db8a6a0b33f39e23ae5a675275e3ce96b6af532c728b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SHwve+Qqu5ZfhgTYpdkbrb2MNk7U0HmHaGBiHJeufVvpU0CRaxXxGRIa8RZzoc2ZAIz//KYJKjW5lpCY7LrmDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T01:30:51.624650Z","bundle_sha256":"1b5202ee07caf6dc958cbe6daf10f38081e2d89aab5e954856ceb6ce0507126c"}}