{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:RXZI2BLB52OYBAZBQABBN2JEPC","short_pith_number":"pith:RXZI2BLB","canonical_record":{"source":{"id":"1304.4755","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T09:59:32Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"2387bee8b9b605776d9effec228f89a7286d6bf89bf573244b09bd1cf8465e5a","abstract_canon_sha256":"8cf27977e4bf32c9541a3f74e3595ae44a1766effc2eaa56a420b0b8965fe9a6"},"schema_version":"1.0"},"canonical_sha256":"8df28d0561ee9d808321800216e92478b180b91422bef7141925a11f5ce006e8","source":{"kind":"arxiv","id":"1304.4755","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4755","created_at":"2026-05-18T03:27:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4755v1","created_at":"2026-05-18T03:27:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4755","created_at":"2026-05-18T03:27:43Z"},{"alias_kind":"pith_short_12","alias_value":"RXZI2BLB52OY","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RXZI2BLB52OYBAZB","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RXZI2BLB","created_at":"2026-05-18T12:27:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:RXZI2BLB52OYBAZBQABBN2JEPC","target":"record","payload":{"canonical_record":{"source":{"id":"1304.4755","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T09:59:32Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"2387bee8b9b605776d9effec228f89a7286d6bf89bf573244b09bd1cf8465e5a","abstract_canon_sha256":"8cf27977e4bf32c9541a3f74e3595ae44a1766effc2eaa56a420b0b8965fe9a6"},"schema_version":"1.0"},"canonical_sha256":"8df28d0561ee9d808321800216e92478b180b91422bef7141925a11f5ce006e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:27:43.779174Z","signature_b64":"0tvraAh/NJKvKh/5eE610ajynIFdjRQXQH5fSFZ+zz91PjB8DvaDLEwTkClOXoGiV1CEIJeAj0457NaMJ2cnDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8df28d0561ee9d808321800216e92478b180b91422bef7141925a11f5ce006e8","last_reissued_at":"2026-05-18T03:27:43.778660Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:27:43.778660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.4755","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":"2026-05-18T03:27:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Eeka/TWLQ0zHj425TweOoebgkQrdcJd3QrkrRgfcRsTIyem4ndD6bN9sXyzLNiafKf/89KJMO0fCJqASu1B0DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T00:08:44.990400Z"},"content_sha256":"1b22f4627bddcecee12b05da3629fb60eca29d77d0294a5526e1dd8878d26628","schema_version":"1.0","event_id":"sha256:1b22f4627bddcecee12b05da3629fb60eca29d77d0294a5526e1dd8878d26628"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:RXZI2BLB52OYBAZBQABBN2JEPC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic coupling of porphyrin molecules through graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"(2) Uppsala University, A. Kr\\\"uger (1), C. F. Hermanns (1), Germany, K. Tarafder (2), M. Bernien (1), P. M. Oppeneer (2), Sweden), W. Kuch (1) ((1) Freie Universit\\\"at Berlin, Y.-M. Chang (1)","submitted_at":"2013-04-17T09:59:32Z","abstract_excerpt":"Graphene is expected to complement todays Si-based information technology. In particular, magnetic molecules in contact with graphene constitute a tantalizing approach towards organic spin electronics because of the reduced conductivity mismatch at the interface. In such a system a bit is represented by a single molecular magnetic moment, which must be stabilized against thermal fluctuations. Here, we show in a combined experimental and theoretical study that the moments of paramagnetic Co-octaethylporphyrin (CoOEP) molecules on graphene can be aligned by a remarkable antiferromagnetic couplin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4755","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":"2026-05-18T03:27:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xgFwyfq0qmd96WAyhnjN9sysu85W6dg4DeWgz7Ztr2mCAhCofGHQKsKbs+d9Rqykcid32BaamunZWo0+cwtFBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T00:08:44.990758Z"},"content_sha256":"8e392275ecc08cc0d23c2f5ef8893ba3d85dc10dbda2986e23006ed96daca5b3","schema_version":"1.0","event_id":"sha256:8e392275ecc08cc0d23c2f5ef8893ba3d85dc10dbda2986e23006ed96daca5b3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RXZI2BLB52OYBAZBQABBN2JEPC/bundle.json","state_url":"https://pith.science/pith/RXZI2BLB52OYBAZBQABBN2JEPC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RXZI2BLB52OYBAZBQABBN2JEPC/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":"2026-06-27T00:08:44Z","links":{"resolver":"https://pith.science/pith/RXZI2BLB52OYBAZBQABBN2JEPC","bundle":"https://pith.science/pith/RXZI2BLB52OYBAZBQABBN2JEPC/bundle.json","state":"https://pith.science/pith/RXZI2BLB52OYBAZBQABBN2JEPC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RXZI2BLB52OYBAZBQABBN2JEPC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:RXZI2BLB52OYBAZBQABBN2JEPC","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":"8cf27977e4bf32c9541a3f74e3595ae44a1766effc2eaa56a420b0b8965fe9a6","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T09:59:32Z","title_canon_sha256":"2387bee8b9b605776d9effec228f89a7286d6bf89bf573244b09bd1cf8465e5a"},"schema_version":"1.0","source":{"id":"1304.4755","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4755","created_at":"2026-05-18T03:27:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4755v1","created_at":"2026-05-18T03:27:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4755","created_at":"2026-05-18T03:27:43Z"},{"alias_kind":"pith_short_12","alias_value":"RXZI2BLB52OY","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RXZI2BLB52OYBAZB","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RXZI2BLB","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:8e392275ecc08cc0d23c2f5ef8893ba3d85dc10dbda2986e23006ed96daca5b3","target":"graph","created_at":"2026-05-18T03:27:43Z","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 is expected to complement todays Si-based information technology. In particular, magnetic molecules in contact with graphene constitute a tantalizing approach towards organic spin electronics because of the reduced conductivity mismatch at the interface. In such a system a bit is represented by a single molecular magnetic moment, which must be stabilized against thermal fluctuations. Here, we show in a combined experimental and theoretical study that the moments of paramagnetic Co-octaethylporphyrin (CoOEP) molecules on graphene can be aligned by a remarkable antiferromagnetic couplin","authors_text":"(2) Uppsala University, A. Kr\\\"uger (1), C. F. Hermanns (1), Germany, K. Tarafder (2), M. Bernien (1), P. M. Oppeneer (2), Sweden), W. Kuch (1) ((1) Freie Universit\\\"at Berlin, Y.-M. Chang (1)","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T09:59:32Z","title":"Magnetic coupling of porphyrin molecules through graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4755","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":"sha256:1b22f4627bddcecee12b05da3629fb60eca29d77d0294a5526e1dd8878d26628","target":"record","created_at":"2026-05-18T03:27:43Z","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":"8cf27977e4bf32c9541a3f74e3595ae44a1766effc2eaa56a420b0b8965fe9a6","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T09:59:32Z","title_canon_sha256":"2387bee8b9b605776d9effec228f89a7286d6bf89bf573244b09bd1cf8465e5a"},"schema_version":"1.0","source":{"id":"1304.4755","kind":"arxiv","version":1}},"canonical_sha256":"8df28d0561ee9d808321800216e92478b180b91422bef7141925a11f5ce006e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8df28d0561ee9d808321800216e92478b180b91422bef7141925a11f5ce006e8","first_computed_at":"2026-05-18T03:27:43.778660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:43.778660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0tvraAh/NJKvKh/5eE610ajynIFdjRQXQH5fSFZ+zz91PjB8DvaDLEwTkClOXoGiV1CEIJeAj0457NaMJ2cnDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:43.779174Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.4755","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b22f4627bddcecee12b05da3629fb60eca29d77d0294a5526e1dd8878d26628","sha256:8e392275ecc08cc0d23c2f5ef8893ba3d85dc10dbda2986e23006ed96daca5b3"],"state_sha256":"2a9479abd90c614e430e65d9e4a4802fe110090c185ba2612b08426e39dbbd00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XLN4+oprm3cYpcHLo9N0m0GcSAACGiGzU2l75p4jCt3OSwHj4D9xpGsCblFbEou35egs/tySH6ZqGHSX3qoXBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T00:08:44.992786Z","bundle_sha256":"a3267259c471b139f5b204936763733ddad8f9556f7718fde9d8fc2642cfcd2a"}}