{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:4OXLFLA6JC5PTFA4IFED6Q7CL3","short_pith_number":"pith:4OXLFLA6","canonical_record":{"source":{"id":"cond-mat/9903435","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"1999-03-30T21:26:44Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9008786082c12ac54157a0190b311fdd86f4db39a3b6effad2ed69561e871f72","abstract_canon_sha256":"bec095cfe6295d5af3263a99c4c658155d90850dac85e9732f391c0c74d35491"},"schema_version":"1.0"},"canonical_sha256":"e3aeb2ac1e48baf9941c41483f43e25ef77c3ad6b18e6a0e8a94f6c6d30d790d","source":{"kind":"arxiv","id":"cond-mat/9903435","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9903435","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9903435v1","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9903435","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"pith_short_12","alias_value":"4OXLFLA6JC5P","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"pith_short_16","alias_value":"4OXLFLA6JC5PTFA4","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"pith_short_8","alias_value":"4OXLFLA6","created_at":"2026-07-04T16:12:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:4OXLFLA6JC5PTFA4IFED6Q7CL3","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/9903435","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"1999-03-30T21:26:44Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9008786082c12ac54157a0190b311fdd86f4db39a3b6effad2ed69561e871f72","abstract_canon_sha256":"bec095cfe6295d5af3263a99c4c658155d90850dac85e9732f391c0c74d35491"},"schema_version":"1.0"},"canonical_sha256":"e3aeb2ac1e48baf9941c41483f43e25ef77c3ad6b18e6a0e8a94f6c6d30d790d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:12:32.227566Z","signature_b64":"OJ0QwQAAk1QxHjhqMKHcQk8uqvUf+aKUKZR/JatWb+XSYTP7VcDTn3SFSrT4L7MOU4xQ7PaDOTmquwLw6v+RAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e3aeb2ac1e48baf9941c41483f43e25ef77c3ad6b18e6a0e8a94f6c6d30d790d","last_reissued_at":"2026-07-04T16:12:32.227223Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:12:32.227223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/9903435","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":"2026-07-04T16:12:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OcyxZO7KeIJXNxrHdZNDtVRmv5cLdUniMSMvMWXxO0yhFUnIgX8n59EzP7nBm/Acy53x0EFS6fJ0T4gqMQ+kBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:23:01.295833Z"},"content_sha256":"3570a59f103bd25d12d1dac70e715c1bd64909cfef7d775864fb5c3d39d8b208","schema_version":"1.0","event_id":"sha256:3570a59f103bd25d12d1dac70e715c1bd64909cfef7d775864fb5c3d39d8b208"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:4OXLFLA6JC5PTFA4IFED6Q7CL3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Effect of Spin Splitting on the Metallic Behavior of a Two-Dimensional System","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"E. P. De Poortere, H. C. Manoharan, M. Shayegan, R. Winkler, S. J. Papadakis","submitted_at":"1999-03-30T21:26:44Z","abstract_excerpt":"Experiments on a constant-density two-dimensional hole system in a GaAs quantum well reveal that the metallic behavior observed in the zero-magnetic-field temperature dependence of the resistivity depends on the symmetry of the confinement potential and the resulting spin-splitting of the valence band."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9903435","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/9903435/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:12:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bmQMbLURezb1m49qfTwqwVV4aP7E3nfR/74NMBSroiB24QwIVdQnlj456dlFIzFNdDeo5By/pM50lZ2RCw7jDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:23:01.296326Z"},"content_sha256":"f0cdac42b3c9f7e58772532b9b35f0bdb28b43885ea08ca678250c2bc3f40bda","schema_version":"1.0","event_id":"sha256:f0cdac42b3c9f7e58772532b9b35f0bdb28b43885ea08ca678250c2bc3f40bda"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3/bundle.json","state_url":"https://pith.science/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3/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":"2026-08-05T13:23:01Z","links":{"resolver":"https://pith.science/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3","bundle":"https://pith.science/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3/bundle.json","state":"https://pith.science/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4OXLFLA6JC5PTFA4IFED6Q7CL3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:4OXLFLA6JC5PTFA4IFED6Q7CL3","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":"bec095cfe6295d5af3263a99c4c658155d90850dac85e9732f391c0c74d35491","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"1999-03-30T21:26:44Z","title_canon_sha256":"9008786082c12ac54157a0190b311fdd86f4db39a3b6effad2ed69561e871f72"},"schema_version":"1.0","source":{"id":"cond-mat/9903435","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9903435","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9903435v1","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9903435","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"pith_short_12","alias_value":"4OXLFLA6JC5P","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"pith_short_16","alias_value":"4OXLFLA6JC5PTFA4","created_at":"2026-07-04T16:12:32Z"},{"alias_kind":"pith_short_8","alias_value":"4OXLFLA6","created_at":"2026-07-04T16:12:32Z"}],"graph_snapshots":[{"event_id":"sha256:f0cdac42b3c9f7e58772532b9b35f0bdb28b43885ea08ca678250c2bc3f40bda","target":"graph","created_at":"2026-07-04T16:12:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/9903435/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Experiments on a constant-density two-dimensional hole system in a GaAs quantum well reveal that the metallic behavior observed in the zero-magnetic-field temperature dependence of the resistivity depends on the symmetry of the confinement potential and the resulting spin-splitting of the valence band.","authors_text":"E. P. De Poortere, H. C. Manoharan, M. Shayegan, R. Winkler, S. J. Papadakis","cross_cats":["cond-mat.str-el"],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"1999-03-30T21:26:44Z","title":"The Effect of Spin Splitting on the Metallic Behavior of a Two-Dimensional System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9903435","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":"sha256:3570a59f103bd25d12d1dac70e715c1bd64909cfef7d775864fb5c3d39d8b208","target":"record","created_at":"2026-07-04T16:12:32Z","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":"bec095cfe6295d5af3263a99c4c658155d90850dac85e9732f391c0c74d35491","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"1999-03-30T21:26:44Z","title_canon_sha256":"9008786082c12ac54157a0190b311fdd86f4db39a3b6effad2ed69561e871f72"},"schema_version":"1.0","source":{"id":"cond-mat/9903435","kind":"arxiv","version":1}},"canonical_sha256":"e3aeb2ac1e48baf9941c41483f43e25ef77c3ad6b18e6a0e8a94f6c6d30d790d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e3aeb2ac1e48baf9941c41483f43e25ef77c3ad6b18e6a0e8a94f6c6d30d790d","first_computed_at":"2026-07-04T16:12:32.227223Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:12:32.227223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OJ0QwQAAk1QxHjhqMKHcQk8uqvUf+aKUKZR/JatWb+XSYTP7VcDTn3SFSrT4L7MOU4xQ7PaDOTmquwLw6v+RAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:12:32.227566Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9903435","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3570a59f103bd25d12d1dac70e715c1bd64909cfef7d775864fb5c3d39d8b208","sha256:f0cdac42b3c9f7e58772532b9b35f0bdb28b43885ea08ca678250c2bc3f40bda"],"state_sha256":"b39fe0c25e1000be39ade103e5a1962f179e50793c6a55f722c2d9067bd707d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GSdyAh4sodALHEerKO3/Ua/9Gp4mJAxDDKjaUJCyv1CUgIcaTWrGJPvmCifqRME3t7o8E9/B60oNAAXA8Hb5Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T13:23:01.303056Z","bundle_sha256":"fde6d24cf52cc33bc083235964853f10042f3d727b080db55f19d6f42540924c"}}