{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SWZRPB4YW4J32WZBIXVNB5CXCF","short_pith_number":"pith:SWZRPB4Y","canonical_record":{"source":{"id":"1701.00861","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-03T22:58:08Z","cross_cats_sorted":[],"title_canon_sha256":"357bce1ff5cbd625a9549b54acc74e2c362d1bc5dceeaceae1174ca5416cbb7e","abstract_canon_sha256":"c89a164cb0511f44b06ad27a05ca409747ff7502af302a4f6a73b300a0b6dcb4"},"schema_version":"1.0"},"canonical_sha256":"95b3178798b713bd5b2145ead0f4571160ab508bcb782d138f21b5f0bbf63859","source":{"kind":"arxiv","id":"1701.00861","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.00861","created_at":"2026-05-18T00:32:25Z"},{"alias_kind":"arxiv_version","alias_value":"1701.00861v1","created_at":"2026-05-18T00:32:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.00861","created_at":"2026-05-18T00:32:25Z"},{"alias_kind":"pith_short_12","alias_value":"SWZRPB4YW4J3","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SWZRPB4YW4J32WZB","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SWZRPB4Y","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SWZRPB4YW4J32WZBIXVNB5CXCF","target":"record","payload":{"canonical_record":{"source":{"id":"1701.00861","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-03T22:58:08Z","cross_cats_sorted":[],"title_canon_sha256":"357bce1ff5cbd625a9549b54acc74e2c362d1bc5dceeaceae1174ca5416cbb7e","abstract_canon_sha256":"c89a164cb0511f44b06ad27a05ca409747ff7502af302a4f6a73b300a0b6dcb4"},"schema_version":"1.0"},"canonical_sha256":"95b3178798b713bd5b2145ead0f4571160ab508bcb782d138f21b5f0bbf63859","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:25.948159Z","signature_b64":"j2yw3+ICfg8Y4Qh8Rs52LZqxoxY/g9pb0b2/i9Pq0lmITbbhRzyFK2gN+cS3rKzKwhaoTDCFnzfdpQcBfgXcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95b3178798b713bd5b2145ead0f4571160ab508bcb782d138f21b5f0bbf63859","last_reissued_at":"2026-05-18T00:32:25.947584Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:25.947584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.00861","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":"2026-05-18T00:32:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PT8/EW/rUVajAN3VDcsK+94ilYyflc0CA492OtHW4iViIcwaRhIge6Z2oMYT0//OVSbasFbbTiZyyF0De8ywBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:37:25.223265Z"},"content_sha256":"00f4865c371e074d12571d294fca71314c764725e8a6e8ed3be594977690ba47","schema_version":"1.0","event_id":"sha256:00f4865c371e074d12571d294fca71314c764725e8a6e8ed3be594977690ba47"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SWZRPB4YW4J32WZBIXVNB5CXCF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetite nano-islands on silicon-carbide with graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"David Vaknin, Michael C. Tringides, Myron Hupalo, Nathaniel A. Anderson, Qiang Zhang, Richard A. Rosenberg","submitted_at":"2017-01-03T22:58:08Z","abstract_excerpt":"X-ray magnetic circular dichroism (XMCD) measurements of iron nano-islands grown on graphene and covered with a Au film for passivation reveal that the oxidation through defects in the Au film spontaneously leads to the formation of magnetite nano-particles (i.e, $Fe_3$$O_4$). The Fe nano-islands (20 and 75 monolayers; MLs) are grown on epitaxial graphene formed by thermally annealing 6H-SiC(0001) and subsequently covered, in the growth chamber, with nominal 20 layers of Au. Our X-ray absorption spectroscopy and XMCD measurements at applied magnetic fields show that the thin film (20 ML) is to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.00861","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":"2026-05-18T00:32:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tLjxKmvyfqr+IsuDkU7y2GcLAqrI4+KASASiIAFJU0kv4LwhO8a3w2b9fHoAmy5Hveh3x+wWSIrnAx922M1rAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:37:25.223941Z"},"content_sha256":"6648f28163a3221aea4bbb44e11c610fa904169fa4cb7da6843dd61a835b0592","schema_version":"1.0","event_id":"sha256:6648f28163a3221aea4bbb44e11c610fa904169fa4cb7da6843dd61a835b0592"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SWZRPB4YW4J32WZBIXVNB5CXCF/bundle.json","state_url":"https://pith.science/pith/SWZRPB4YW4J32WZBIXVNB5CXCF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SWZRPB4YW4J32WZBIXVNB5CXCF/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":"2026-05-26T12:37:25Z","links":{"resolver":"https://pith.science/pith/SWZRPB4YW4J32WZBIXVNB5CXCF","bundle":"https://pith.science/pith/SWZRPB4YW4J32WZBIXVNB5CXCF/bundle.json","state":"https://pith.science/pith/SWZRPB4YW4J32WZBIXVNB5CXCF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SWZRPB4YW4J32WZBIXVNB5CXCF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SWZRPB4YW4J32WZBIXVNB5CXCF","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":"c89a164cb0511f44b06ad27a05ca409747ff7502af302a4f6a73b300a0b6dcb4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-03T22:58:08Z","title_canon_sha256":"357bce1ff5cbd625a9549b54acc74e2c362d1bc5dceeaceae1174ca5416cbb7e"},"schema_version":"1.0","source":{"id":"1701.00861","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.00861","created_at":"2026-05-18T00:32:25Z"},{"alias_kind":"arxiv_version","alias_value":"1701.00861v1","created_at":"2026-05-18T00:32:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.00861","created_at":"2026-05-18T00:32:25Z"},{"alias_kind":"pith_short_12","alias_value":"SWZRPB4YW4J3","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SWZRPB4YW4J32WZB","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SWZRPB4Y","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:6648f28163a3221aea4bbb44e11c610fa904169fa4cb7da6843dd61a835b0592","target":"graph","created_at":"2026-05-18T00:32:25Z","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":"X-ray magnetic circular dichroism (XMCD) measurements of iron nano-islands grown on graphene and covered with a Au film for passivation reveal that the oxidation through defects in the Au film spontaneously leads to the formation of magnetite nano-particles (i.e, $Fe_3$$O_4$). The Fe nano-islands (20 and 75 monolayers; MLs) are grown on epitaxial graphene formed by thermally annealing 6H-SiC(0001) and subsequently covered, in the growth chamber, with nominal 20 layers of Au. Our X-ray absorption spectroscopy and XMCD measurements at applied magnetic fields show that the thin film (20 ML) is to","authors_text":"David Vaknin, Michael C. Tringides, Myron Hupalo, Nathaniel A. Anderson, Qiang Zhang, Richard A. Rosenberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-03T22:58:08Z","title":"Magnetite nano-islands on silicon-carbide with graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.00861","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":"sha256:00f4865c371e074d12571d294fca71314c764725e8a6e8ed3be594977690ba47","target":"record","created_at":"2026-05-18T00:32:25Z","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":"c89a164cb0511f44b06ad27a05ca409747ff7502af302a4f6a73b300a0b6dcb4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-03T22:58:08Z","title_canon_sha256":"357bce1ff5cbd625a9549b54acc74e2c362d1bc5dceeaceae1174ca5416cbb7e"},"schema_version":"1.0","source":{"id":"1701.00861","kind":"arxiv","version":1}},"canonical_sha256":"95b3178798b713bd5b2145ead0f4571160ab508bcb782d138f21b5f0bbf63859","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95b3178798b713bd5b2145ead0f4571160ab508bcb782d138f21b5f0bbf63859","first_computed_at":"2026-05-18T00:32:25.947584Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:25.947584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j2yw3+ICfg8Y4Qh8Rs52LZqxoxY/g9pb0b2/i9Pq0lmITbbhRzyFK2gN+cS3rKzKwhaoTDCFnzfdpQcBfgXcAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:25.948159Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.00861","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00f4865c371e074d12571d294fca71314c764725e8a6e8ed3be594977690ba47","sha256:6648f28163a3221aea4bbb44e11c610fa904169fa4cb7da6843dd61a835b0592"],"state_sha256":"8e9805451c6873302ed3db6390e2f31bdb81d7f8fa8915eeb49f8faf2549f1d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z6rN1LlVghzYw0A1+C1RncJstV89tEiaOLMWirLke+AtWhuXHr+suBU5IIcyqZEQe9T73JQpw9z+WxnauinKCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:37:25.226969Z","bundle_sha256":"b14b96bdffd577a5931f90adb697158cfdab4c45a1e52cbe2ce953d2db04a1f5"}}