{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NYIMO665KQN47I65X65X2PXLOZ","short_pith_number":"pith:NYIMO665","canonical_record":{"source":{"id":"1810.07573","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-17T14:24:34Z","cross_cats_sorted":[],"title_canon_sha256":"5211a2173fab243bacd8b321226c243075fd4e57b7cd60a730fc559b7dfc85d3","abstract_canon_sha256":"197d13f594b20f20ee3b7b0ff97d50a084d52130f841128887ebb356f42f2112"},"schema_version":"1.0"},"canonical_sha256":"6e10c77bdd541bcfa3ddbfbb7d3eeb76495208d49d71b0e5e49d555b94edd07e","source":{"kind":"arxiv","id":"1810.07573","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07573","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07573v2","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07573","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"NYIMO665KQN4","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NYIMO665KQN47I65","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NYIMO665","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NYIMO665KQN47I65X65X2PXLOZ","target":"record","payload":{"canonical_record":{"source":{"id":"1810.07573","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-17T14:24:34Z","cross_cats_sorted":[],"title_canon_sha256":"5211a2173fab243bacd8b321226c243075fd4e57b7cd60a730fc559b7dfc85d3","abstract_canon_sha256":"197d13f594b20f20ee3b7b0ff97d50a084d52130f841128887ebb356f42f2112"},"schema_version":"1.0"},"canonical_sha256":"6e10c77bdd541bcfa3ddbfbb7d3eeb76495208d49d71b0e5e49d555b94edd07e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:43.139573Z","signature_b64":"J2INj/g3iKDS757HwrxvGVgKhG1/976jbs1+rxlewF987W6C7yzrxcE7O7HT41o1AYeHK3Dip/fdAwR7YycHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e10c77bdd541bcfa3ddbfbb7d3eeb76495208d49d71b0e5e49d555b94edd07e","last_reissued_at":"2026-05-17T23:54:43.138887Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:43.138887Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.07573","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":"2026-05-17T23:54:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GQ2R3blvyV5BpqX9SwSccfJy/YYEgBaM8mF+qPU/QqV6BWzZnrYAsqqgWhN3E4QSYK4IOhK8ZuuOgl8Xxg23AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:45:07.784861Z"},"content_sha256":"057787f53fc239681da0edaa4bfa24469ccc917430b3a2fd833bde05ae9520ef","schema_version":"1.0","event_id":"sha256:057787f53fc239681da0edaa4bfa24469ccc917430b3a2fd833bde05ae9520ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NYIMO665KQN47I65X65X2PXLOZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic hallmarks of viscous electron flow in graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Francesco M. D. Pellegrino, Karina A. Guerrero-Becerra, Marco Polini","submitted_at":"2018-10-17T14:24:34Z","abstract_excerpt":"We propose a protocol to identify spatial hallmarks of viscous electron flow in graphene and other two-dimensional viscous electron fluids. We predict that the profile of the magnetic field generated by hydrodynamic electron currents flowing in confined geometries displays unambiguous features linked to whirlpools and backflow near current injectors. We also show that the same profile sheds light on the nature of the boundary conditions describing friction exerted on the electron fluid by the edges of the sample. Our predictions are within reach of vector magnetometry based on nitrogen-vacancy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07573","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":"2026-05-17T23:54:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+VFrFLJ/psmlUhNU9Zr3RbOpG3QpMFyDtWX/G3gHq2986NJ3aSD1wnfzIFpgXxkvNvdVEGWRPpSo7Srw0CHADw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:45:07.785210Z"},"content_sha256":"dced249c4a4ee11ff2dad8e0d7ea5115d59229aaf0daaa65ef89298383a67d8e","schema_version":"1.0","event_id":"sha256:dced249c4a4ee11ff2dad8e0d7ea5115d59229aaf0daaa65ef89298383a67d8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NYIMO665KQN47I65X65X2PXLOZ/bundle.json","state_url":"https://pith.science/pith/NYIMO665KQN47I65X65X2PXLOZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NYIMO665KQN47I65X65X2PXLOZ/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":"2026-06-02T21:45:07Z","links":{"resolver":"https://pith.science/pith/NYIMO665KQN47I65X65X2PXLOZ","bundle":"https://pith.science/pith/NYIMO665KQN47I65X65X2PXLOZ/bundle.json","state":"https://pith.science/pith/NYIMO665KQN47I65X65X2PXLOZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NYIMO665KQN47I65X65X2PXLOZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NYIMO665KQN47I65X65X2PXLOZ","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":"197d13f594b20f20ee3b7b0ff97d50a084d52130f841128887ebb356f42f2112","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-17T14:24:34Z","title_canon_sha256":"5211a2173fab243bacd8b321226c243075fd4e57b7cd60a730fc559b7dfc85d3"},"schema_version":"1.0","source":{"id":"1810.07573","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07573","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07573v2","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07573","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"NYIMO665KQN4","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NYIMO665KQN47I65","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NYIMO665","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:dced249c4a4ee11ff2dad8e0d7ea5115d59229aaf0daaa65ef89298383a67d8e","target":"graph","created_at":"2026-05-17T23:54:43Z","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":"We propose a protocol to identify spatial hallmarks of viscous electron flow in graphene and other two-dimensional viscous electron fluids. We predict that the profile of the magnetic field generated by hydrodynamic electron currents flowing in confined geometries displays unambiguous features linked to whirlpools and backflow near current injectors. We also show that the same profile sheds light on the nature of the boundary conditions describing friction exerted on the electron fluid by the edges of the sample. Our predictions are within reach of vector magnetometry based on nitrogen-vacancy","authors_text":"Francesco M. D. Pellegrino, Karina A. Guerrero-Becerra, Marco Polini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-17T14:24:34Z","title":"Magnetic hallmarks of viscous electron flow in graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07573","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":"sha256:057787f53fc239681da0edaa4bfa24469ccc917430b3a2fd833bde05ae9520ef","target":"record","created_at":"2026-05-17T23:54:43Z","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":"197d13f594b20f20ee3b7b0ff97d50a084d52130f841128887ebb356f42f2112","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-10-17T14:24:34Z","title_canon_sha256":"5211a2173fab243bacd8b321226c243075fd4e57b7cd60a730fc559b7dfc85d3"},"schema_version":"1.0","source":{"id":"1810.07573","kind":"arxiv","version":2}},"canonical_sha256":"6e10c77bdd541bcfa3ddbfbb7d3eeb76495208d49d71b0e5e49d555b94edd07e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e10c77bdd541bcfa3ddbfbb7d3eeb76495208d49d71b0e5e49d555b94edd07e","first_computed_at":"2026-05-17T23:54:43.138887Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:43.138887Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J2INj/g3iKDS757HwrxvGVgKhG1/976jbs1+rxlewF987W6C7yzrxcE7O7HT41o1AYeHK3Dip/fdAwR7YycHCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:43.139573Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.07573","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:057787f53fc239681da0edaa4bfa24469ccc917430b3a2fd833bde05ae9520ef","sha256:dced249c4a4ee11ff2dad8e0d7ea5115d59229aaf0daaa65ef89298383a67d8e"],"state_sha256":"2df4033244c2b64bb0b4dd544d87c9e0f0a0289fe8bbc06396cc0ca88b8ac714"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"glh+8cFOudt4vICIwHOdiSx7EcGcX24f5NSDU9q7bKc4Bd9WhA2lf6+67WFuO4a6R+aU2oO8SgMW16ULckhbCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:45:07.787231Z","bundle_sha256":"d37c6efde40a5dc2e4147aa22707e79c2d9b1262e35306cdc04d2b1ad0e1d443"}}