{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ONGEIS7YPDHUZ5MF2BSBE3CCZU","short_pith_number":"pith:ONGEIS7Y","canonical_record":{"source":{"id":"1407.7458","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-07-28T15:57:32Z","cross_cats_sorted":[],"title_canon_sha256":"cbae9d3dda457022a7ca06b8b06b6e96f864ac608d7861a6fb14d80b9aeca170","abstract_canon_sha256":"4b1f0db6770b207116f8c72206b9e38c331448f22c50b78f775239a9b02d9479"},"schema_version":"1.0"},"canonical_sha256":"734c444bf878cf4cf585d064126c42cd1d0b97d1e00dc44c77023431ba314932","source":{"kind":"arxiv","id":"1407.7458","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.7458","created_at":"2026-05-18T02:38:28Z"},{"alias_kind":"arxiv_version","alias_value":"1407.7458v2","created_at":"2026-05-18T02:38:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.7458","created_at":"2026-05-18T02:38:28Z"},{"alias_kind":"pith_short_12","alias_value":"ONGEIS7YPDHU","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"ONGEIS7YPDHUZ5MF","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"ONGEIS7Y","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ONGEIS7YPDHUZ5MF2BSBE3CCZU","target":"record","payload":{"canonical_record":{"source":{"id":"1407.7458","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-07-28T15:57:32Z","cross_cats_sorted":[],"title_canon_sha256":"cbae9d3dda457022a7ca06b8b06b6e96f864ac608d7861a6fb14d80b9aeca170","abstract_canon_sha256":"4b1f0db6770b207116f8c72206b9e38c331448f22c50b78f775239a9b02d9479"},"schema_version":"1.0"},"canonical_sha256":"734c444bf878cf4cf585d064126c42cd1d0b97d1e00dc44c77023431ba314932","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:38:28.351121Z","signature_b64":"Y5TjjxeU5Rj/RylZnhEEo6UFW1TlAj944x5EnixcJ+piTMDhZYWOPFOihqHMQQPXnqebQdw/jcS9tkenT9cbAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"734c444bf878cf4cf585d064126c42cd1d0b97d1e00dc44c77023431ba314932","last_reissued_at":"2026-05-18T02:38:28.350532Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:38:28.350532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.7458","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":"2026-05-18T02:38:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YklHfaQeM+Qv3fJpqD5pcjwKlWpjpZe0mErRip8/7OApfxJeeURE8J32rHBsVD4fTRDJ/gHK7gj8a0yo7eZeDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:12:31.835698Z"},"content_sha256":"289f8becf6ab50d4cade5f1c137d9d807d3de27ea67bb17b40868bd4e89ad26e","schema_version":"1.0","event_id":"sha256:289f8becf6ab50d4cade5f1c137d9d807d3de27ea67bb17b40868bd4e89ad26e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ONGEIS7YPDHUZ5MF2BSBE3CCZU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the low-field Hall coefficient of graphite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"J. Barzola-Quiquia, J. Kr\\\"uger, N. Garc\\'ia, P. Esquinazi, R. Sch\\\"onemann, T. Herrmannsd\\\"orfer","submitted_at":"2014-07-28T15:57:32Z","abstract_excerpt":"We have measured the temperature and magnetic field dependence of the Hall coefficient ($R_{\\rm H}$) in three, several micrometer long multigraphene samples of thickness between $\\sim 9~$to $\\sim 30$~nm in the temperature range 0.1 to 200~K and up to 0.2~T field. The temperature dependence of the longitudinal resistance of two of the samples indicates the contribution from embedded interfaces running parallel to the graphene layers. At low enough temperatures and fields $R_{\\rm H}$ is positive in all samples, showing a crossover to negative values at high enough fields and/or temperatures in s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.7458","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":"2026-05-18T02:38:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D/V/KB+fLTRXHhcYlNG+zLllmPZCglyUns911xESB+zrAUK2TVrsd16keU2FOmBDA4fLWOHb74k/mP8mvfmvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:12:31.836098Z"},"content_sha256":"e4e7679bded3b248d249d9c55020c74b3b35a6bcf653dc194874f3882759a046","schema_version":"1.0","event_id":"sha256:e4e7679bded3b248d249d9c55020c74b3b35a6bcf653dc194874f3882759a046"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU/bundle.json","state_url":"https://pith.science/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU/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":"2026-05-27T14:12:31Z","links":{"resolver":"https://pith.science/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU","bundle":"https://pith.science/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU/bundle.json","state":"https://pith.science/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ONGEIS7YPDHUZ5MF2BSBE3CCZU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ONGEIS7YPDHUZ5MF2BSBE3CCZU","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":"4b1f0db6770b207116f8c72206b9e38c331448f22c50b78f775239a9b02d9479","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-07-28T15:57:32Z","title_canon_sha256":"cbae9d3dda457022a7ca06b8b06b6e96f864ac608d7861a6fb14d80b9aeca170"},"schema_version":"1.0","source":{"id":"1407.7458","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.7458","created_at":"2026-05-18T02:38:28Z"},{"alias_kind":"arxiv_version","alias_value":"1407.7458v2","created_at":"2026-05-18T02:38:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.7458","created_at":"2026-05-18T02:38:28Z"},{"alias_kind":"pith_short_12","alias_value":"ONGEIS7YPDHU","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"ONGEIS7YPDHUZ5MF","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"ONGEIS7Y","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:e4e7679bded3b248d249d9c55020c74b3b35a6bcf653dc194874f3882759a046","target":"graph","created_at":"2026-05-18T02:38:28Z","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 have measured the temperature and magnetic field dependence of the Hall coefficient ($R_{\\rm H}$) in three, several micrometer long multigraphene samples of thickness between $\\sim 9~$to $\\sim 30$~nm in the temperature range 0.1 to 200~K and up to 0.2~T field. The temperature dependence of the longitudinal resistance of two of the samples indicates the contribution from embedded interfaces running parallel to the graphene layers. At low enough temperatures and fields $R_{\\rm H}$ is positive in all samples, showing a crossover to negative values at high enough fields and/or temperatures in s","authors_text":"J. Barzola-Quiquia, J. Kr\\\"uger, N. Garc\\'ia, P. Esquinazi, R. Sch\\\"onemann, T. Herrmannsd\\\"orfer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-07-28T15:57:32Z","title":"On the low-field Hall coefficient of graphite"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.7458","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":"sha256:289f8becf6ab50d4cade5f1c137d9d807d3de27ea67bb17b40868bd4e89ad26e","target":"record","created_at":"2026-05-18T02:38:28Z","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":"4b1f0db6770b207116f8c72206b9e38c331448f22c50b78f775239a9b02d9479","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-07-28T15:57:32Z","title_canon_sha256":"cbae9d3dda457022a7ca06b8b06b6e96f864ac608d7861a6fb14d80b9aeca170"},"schema_version":"1.0","source":{"id":"1407.7458","kind":"arxiv","version":2}},"canonical_sha256":"734c444bf878cf4cf585d064126c42cd1d0b97d1e00dc44c77023431ba314932","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"734c444bf878cf4cf585d064126c42cd1d0b97d1e00dc44c77023431ba314932","first_computed_at":"2026-05-18T02:38:28.350532Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:38:28.350532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y5TjjxeU5Rj/RylZnhEEo6UFW1TlAj944x5EnixcJ+piTMDhZYWOPFOihqHMQQPXnqebQdw/jcS9tkenT9cbAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:38:28.351121Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.7458","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:289f8becf6ab50d4cade5f1c137d9d807d3de27ea67bb17b40868bd4e89ad26e","sha256:e4e7679bded3b248d249d9c55020c74b3b35a6bcf653dc194874f3882759a046"],"state_sha256":"45f7437251ca99253eb0e5011786b2e6c9f6af5ea546407af96f1fd42c434585"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r4MzePv96D6bKtCzRKemT9TKI7Qgp7NBK/k0XaEEjYAcY2Wtbr0Qj6px9i0b8dWTyD5t+jGtZE6gfgZ0cPNoCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:12:31.839522Z","bundle_sha256":"126b00ba80175aef9bdce72328c886dbd7e21626b232a799e9842948d017860f"}}