{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:UFDQXQFBT3MGWH7MSISXYTFETP","short_pith_number":"pith:UFDQXQFB","canonical_record":{"source":{"id":"1806.07417","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T18:26:34Z","cross_cats_sorted":[],"title_canon_sha256":"13a04344a5ee1db473b38244cec48f756f2ded0e699731ac6a540cfc0444509c","abstract_canon_sha256":"7a9c1a9f4b437cbae18a0c671e07c1002f9930aa9756dc1a5056111b41a488bd"},"schema_version":"1.0"},"canonical_sha256":"a1470bc0a19ed86b1fec92257c4ca49be6eeae01a2c286693f14d13527f99cef","source":{"kind":"arxiv","id":"1806.07417","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.07417","created_at":"2026-05-18T00:09:58Z"},{"alias_kind":"arxiv_version","alias_value":"1806.07417v3","created_at":"2026-05-18T00:09:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.07417","created_at":"2026-05-18T00:09:58Z"},{"alias_kind":"pith_short_12","alias_value":"UFDQXQFBT3MG","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UFDQXQFBT3MGWH7M","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UFDQXQFB","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:UFDQXQFBT3MGWH7MSISXYTFETP","target":"record","payload":{"canonical_record":{"source":{"id":"1806.07417","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T18:26:34Z","cross_cats_sorted":[],"title_canon_sha256":"13a04344a5ee1db473b38244cec48f756f2ded0e699731ac6a540cfc0444509c","abstract_canon_sha256":"7a9c1a9f4b437cbae18a0c671e07c1002f9930aa9756dc1a5056111b41a488bd"},"schema_version":"1.0"},"canonical_sha256":"a1470bc0a19ed86b1fec92257c4ca49be6eeae01a2c286693f14d13527f99cef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:58.631032Z","signature_b64":"HdUne/UYOblhmHZ5g1TmMTIxgnvlzuni7mYha8Vor82Zh676dFdoD/rbaGZAHa8R71jBmBTnCAzXlWQvitSXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1470bc0a19ed86b1fec92257c4ca49be6eeae01a2c286693f14d13527f99cef","last_reissued_at":"2026-05-18T00:09:58.630309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:58.630309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.07417","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":"2026-05-18T00:09:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PbcfXU64sJ7AKv8Sa9bq2FVgp9ZpWR1w1wcJLQubmplwXaiu0zaew5rQGfxIqKrVoz9JcmGP1O+eXEj60Nf9CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:27:54.487856Z"},"content_sha256":"85cfb68aed8561d4b33fe71e2108c3ac808bc85591b500167855b55cf45f867f","schema_version":"1.0","event_id":"sha256:85cfb68aed8561d4b33fe71e2108c3ac808bc85591b500167855b55cf45f867f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:UFDQXQFBT3MGWH7MSISXYTFETP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Influence of Interfaces on the Transport Properties of Graphite revealed by Nanometer Thickness Reduction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Irina Estrela-Lopis, Jos\\'e Barzola-Quiquia, Mahsa Zoraghi, Markus Stiller, Pablo D. Esquinazi","submitted_at":"2018-06-19T18:26:34Z","abstract_excerpt":"We investigated the influence of thickness reduction on the transport properties of graphite microflakes. Using oxygen plasma etching we decreased the thickness of highly oriented pyrolytic graphite (HOPG) microflakes from $\\sim 100$~nm to $\\sim 20$~nm systematically. Keeping current and voltage electrodes intact, the electrical resistance $R(T)$, the magnetoresistance (MR) and Raman spectra were measured in every individual sample and after each etching step of a few nm. The results show that $R(T)$ and MR can increase or decrease with the sample thickness in a non-systematic way. The results"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.07417","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":"2026-05-18T00:09:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wEeLByqOl4hRbwpq9jgIeANO3J4eiIO+Cg5klfoC28lmKRKZsQ6LuAcz+2rkB8ZBpeDsFsIv/nGqir46DD+aDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:27:54.488215Z"},"content_sha256":"418f3cce491ade4f99ed0a5d56063669383e2c85230ba9a13a65108c1dbd6102","schema_version":"1.0","event_id":"sha256:418f3cce491ade4f99ed0a5d56063669383e2c85230ba9a13a65108c1dbd6102"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UFDQXQFBT3MGWH7MSISXYTFETP/bundle.json","state_url":"https://pith.science/pith/UFDQXQFBT3MGWH7MSISXYTFETP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UFDQXQFBT3MGWH7MSISXYTFETP/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":"2026-06-01T04:27:54Z","links":{"resolver":"https://pith.science/pith/UFDQXQFBT3MGWH7MSISXYTFETP","bundle":"https://pith.science/pith/UFDQXQFBT3MGWH7MSISXYTFETP/bundle.json","state":"https://pith.science/pith/UFDQXQFBT3MGWH7MSISXYTFETP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UFDQXQFBT3MGWH7MSISXYTFETP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:UFDQXQFBT3MGWH7MSISXYTFETP","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":"7a9c1a9f4b437cbae18a0c671e07c1002f9930aa9756dc1a5056111b41a488bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T18:26:34Z","title_canon_sha256":"13a04344a5ee1db473b38244cec48f756f2ded0e699731ac6a540cfc0444509c"},"schema_version":"1.0","source":{"id":"1806.07417","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.07417","created_at":"2026-05-18T00:09:58Z"},{"alias_kind":"arxiv_version","alias_value":"1806.07417v3","created_at":"2026-05-18T00:09:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.07417","created_at":"2026-05-18T00:09:58Z"},{"alias_kind":"pith_short_12","alias_value":"UFDQXQFBT3MG","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UFDQXQFBT3MGWH7M","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UFDQXQFB","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:418f3cce491ade4f99ed0a5d56063669383e2c85230ba9a13a65108c1dbd6102","target":"graph","created_at":"2026-05-18T00:09:58Z","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":"We investigated the influence of thickness reduction on the transport properties of graphite microflakes. Using oxygen plasma etching we decreased the thickness of highly oriented pyrolytic graphite (HOPG) microflakes from $\\sim 100$~nm to $\\sim 20$~nm systematically. Keeping current and voltage electrodes intact, the electrical resistance $R(T)$, the magnetoresistance (MR) and Raman spectra were measured in every individual sample and after each etching step of a few nm. The results show that $R(T)$ and MR can increase or decrease with the sample thickness in a non-systematic way. The results","authors_text":"Irina Estrela-Lopis, Jos\\'e Barzola-Quiquia, Mahsa Zoraghi, Markus Stiller, Pablo D. Esquinazi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T18:26:34Z","title":"Influence of Interfaces on the Transport Properties of Graphite revealed by Nanometer Thickness Reduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.07417","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":"sha256:85cfb68aed8561d4b33fe71e2108c3ac808bc85591b500167855b55cf45f867f","target":"record","created_at":"2026-05-18T00:09:58Z","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":"7a9c1a9f4b437cbae18a0c671e07c1002f9930aa9756dc1a5056111b41a488bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T18:26:34Z","title_canon_sha256":"13a04344a5ee1db473b38244cec48f756f2ded0e699731ac6a540cfc0444509c"},"schema_version":"1.0","source":{"id":"1806.07417","kind":"arxiv","version":3}},"canonical_sha256":"a1470bc0a19ed86b1fec92257c4ca49be6eeae01a2c286693f14d13527f99cef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1470bc0a19ed86b1fec92257c4ca49be6eeae01a2c286693f14d13527f99cef","first_computed_at":"2026-05-18T00:09:58.630309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:58.630309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HdUne/UYOblhmHZ5g1TmMTIxgnvlzuni7mYha8Vor82Zh676dFdoD/rbaGZAHa8R71jBmBTnCAzXlWQvitSXDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:58.631032Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.07417","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85cfb68aed8561d4b33fe71e2108c3ac808bc85591b500167855b55cf45f867f","sha256:418f3cce491ade4f99ed0a5d56063669383e2c85230ba9a13a65108c1dbd6102"],"state_sha256":"21164c8d56c9b44fa171477d922093d77615abf242088e2ea5c4f08c1dbeb2c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/V5FqAcplQiMQ2S0h88ZLej00KbT2pcGUtn0R5sbOuzRUFYt7xijNzn0QWYdn/245gtNT8VkY0shUtLUtWyKAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:27:54.490370Z","bundle_sha256":"22a74b5b384d307c37faaf1b39d9802332cc00954b37406ceaf7fb58752fab23"}}