{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:5HPVRLR7X33T5YY7TQ2CMW5JCP","short_pith_number":"pith:5HPVRLR7","canonical_record":{"source":{"id":"1806.09124","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-06-24T10:53:06Z","cross_cats_sorted":[],"title_canon_sha256":"b26b8c82c223cc8aba30663fa823d797cc6606761a9b86cd0df9dec49040fd1d","abstract_canon_sha256":"4548d500ae1dab7c3c062ba82ab8a1801b799ae03534ba9732f6d08e4c88cc63"},"schema_version":"1.0"},"canonical_sha256":"e9df58ae3fbef73ee31f9c34265ba913e8df2517221b907f241a5909773a2106","source":{"kind":"arxiv","id":"1806.09124","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.09124","created_at":"2026-05-18T00:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"1806.09124v1","created_at":"2026-05-18T00:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.09124","created_at":"2026-05-18T00:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"5HPVRLR7X33T","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5HPVRLR7X33T5YY7","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5HPVRLR7","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:5HPVRLR7X33T5YY7TQ2CMW5JCP","target":"record","payload":{"canonical_record":{"source":{"id":"1806.09124","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-06-24T10:53:06Z","cross_cats_sorted":[],"title_canon_sha256":"b26b8c82c223cc8aba30663fa823d797cc6606761a9b86cd0df9dec49040fd1d","abstract_canon_sha256":"4548d500ae1dab7c3c062ba82ab8a1801b799ae03534ba9732f6d08e4c88cc63"},"schema_version":"1.0"},"canonical_sha256":"e9df58ae3fbef73ee31f9c34265ba913e8df2517221b907f241a5909773a2106","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:30.223072Z","signature_b64":"WKogc0GRb7XvtGzPmEStVfV8vahFsVVN8xkERa9kTmxY3xCYcu8zso7+aGYiVZHmKvhs8a25cK1ZWtC9c95eAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9df58ae3fbef73ee31f9c34265ba913e8df2517221b907f241a5909773a2106","last_reissued_at":"2026-05-18T00:12:30.222591Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:30.222591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.09124","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":"2026-05-18T00:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WkFNYLe7OFxW6VKlsarGTA1h9dg2O/R06qsf+F5ZODPKIHC9rqrL5/IqM5++htyl55eVnilyhXeQUDsGCmN7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T21:43:26.644912Z"},"content_sha256":"7346f2356396f022201649678094c0ad1f7d75512cbb85de5501fcf6a16c13dd","schema_version":"1.0","event_id":"sha256:7346f2356396f022201649678094c0ad1f7d75512cbb85de5501fcf6a16c13dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:5HPVRLR7X33T5YY7TQ2CMW5JCP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Circuit-Level Evaluation of the Generation of Truly Random Bits with Superparamagnetic Tunnel Junctions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Alice Mizrahi, Damien Querlioz, Damir Vodenicarevic, Joseph S. Friedman, Julie Grollier, Nicolas Locatelli, Tifenn Hirtzlin","submitted_at":"2018-06-24T10:53:06Z","abstract_excerpt":"Many emerging alternative models of computation require massive numbers of random bits, but their generation at low energy is currently a challenge. The superparamagnetic tunnel junction, a spintronic device based on the same technology as spin torque magnetoresistive random access memory has recently been proposed as a solution, as this device naturally switches between two easy to measure resistance states, due only to thermal noise. Reading the state of the junction naturally provides random bits, without the need of write operations. In this work, we evaluate a circuit solution for reading"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.09124","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":"2026-05-18T00:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7+YnANWgb6FU5eP4r9e/LPAP8rM7iriH29bcoULrl/bYOzYGYa8FwFkPXSFICK+X50tX1vmTMGFirQzPAwYQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T21:43:26.645483Z"},"content_sha256":"c981d46f0e8a6dd6186e70463b4fb4e8b5b3f33fd3c165e3baeb6756838dadaa","schema_version":"1.0","event_id":"sha256:c981d46f0e8a6dd6186e70463b4fb4e8b5b3f33fd3c165e3baeb6756838dadaa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP/bundle.json","state_url":"https://pith.science/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP/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":"2026-05-21T21:43:26Z","links":{"resolver":"https://pith.science/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP","bundle":"https://pith.science/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP/bundle.json","state":"https://pith.science/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5HPVRLR7X33T5YY7TQ2CMW5JCP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:5HPVRLR7X33T5YY7TQ2CMW5JCP","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":"4548d500ae1dab7c3c062ba82ab8a1801b799ae03534ba9732f6d08e4c88cc63","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-06-24T10:53:06Z","title_canon_sha256":"b26b8c82c223cc8aba30663fa823d797cc6606761a9b86cd0df9dec49040fd1d"},"schema_version":"1.0","source":{"id":"1806.09124","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.09124","created_at":"2026-05-18T00:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"1806.09124v1","created_at":"2026-05-18T00:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.09124","created_at":"2026-05-18T00:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"5HPVRLR7X33T","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5HPVRLR7X33T5YY7","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5HPVRLR7","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:c981d46f0e8a6dd6186e70463b4fb4e8b5b3f33fd3c165e3baeb6756838dadaa","target":"graph","created_at":"2026-05-18T00:12:30Z","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":"Many emerging alternative models of computation require massive numbers of random bits, but their generation at low energy is currently a challenge. The superparamagnetic tunnel junction, a spintronic device based on the same technology as spin torque magnetoresistive random access memory has recently been proposed as a solution, as this device naturally switches between two easy to measure resistance states, due only to thermal noise. Reading the state of the junction naturally provides random bits, without the need of write operations. In this work, we evaluate a circuit solution for reading","authors_text":"Alice Mizrahi, Damien Querlioz, Damir Vodenicarevic, Joseph S. Friedman, Julie Grollier, Nicolas Locatelli, Tifenn Hirtzlin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-06-24T10:53:06Z","title":"Circuit-Level Evaluation of the Generation of Truly Random Bits with Superparamagnetic Tunnel Junctions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.09124","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":"sha256:7346f2356396f022201649678094c0ad1f7d75512cbb85de5501fcf6a16c13dd","target":"record","created_at":"2026-05-18T00:12:30Z","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":"4548d500ae1dab7c3c062ba82ab8a1801b799ae03534ba9732f6d08e4c88cc63","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-06-24T10:53:06Z","title_canon_sha256":"b26b8c82c223cc8aba30663fa823d797cc6606761a9b86cd0df9dec49040fd1d"},"schema_version":"1.0","source":{"id":"1806.09124","kind":"arxiv","version":1}},"canonical_sha256":"e9df58ae3fbef73ee31f9c34265ba913e8df2517221b907f241a5909773a2106","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9df58ae3fbef73ee31f9c34265ba913e8df2517221b907f241a5909773a2106","first_computed_at":"2026-05-18T00:12:30.222591Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:30.222591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WKogc0GRb7XvtGzPmEStVfV8vahFsVVN8xkERa9kTmxY3xCYcu8zso7+aGYiVZHmKvhs8a25cK1ZWtC9c95eAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:30.223072Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.09124","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7346f2356396f022201649678094c0ad1f7d75512cbb85de5501fcf6a16c13dd","sha256:c981d46f0e8a6dd6186e70463b4fb4e8b5b3f33fd3c165e3baeb6756838dadaa"],"state_sha256":"7fb4a84dbc6de0d4df18d9fa6d56d7c68b67a0c4197f2a71e8c6dcef7f944d29"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a+Agmt77g3wi+9k/omG1ZgQvrAUSYCIg6BVtD0Rf30gB/rv+mBg84gjbbomtTPC4yxzSy5lT773kFc2ce8AZCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T21:43:26.648295Z","bundle_sha256":"15574f7bcef8c31dc6edf80f5cdfa227127a0754928fc211966106075279f6a5"}}