{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:IFBPM5WL3LT6ALHN5YYXDWW4Z6","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":"bb6f851a6899cfaeef7a23d1e8e5479f43a50799f484a8993ef8801df02f65b6","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-26T09:16:28Z","title_canon_sha256":"5723b296b525c2427fe127e8d9511a9110b1fbf09db92c8f18873b89f9f517e8"},"schema_version":"1.0","source":{"id":"1601.06938","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.06938","created_at":"2026-05-18T01:17:11Z"},{"alias_kind":"arxiv_version","alias_value":"1601.06938v2","created_at":"2026-05-18T01:17:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.06938","created_at":"2026-05-18T01:17:11Z"},{"alias_kind":"pith_short_12","alias_value":"IFBPM5WL3LT6","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IFBPM5WL3LT6ALHN","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IFBPM5WL","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:ec40c44e6bc0a1d6c848eb091b50b8a4af477f51f4060d2939d4da1060963ab8","target":"graph","created_at":"2026-05-18T01:17:11Z","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":"A multi-channel atomic magnetometer operating in an unshielded environment is described and characterised. The magnetometer is based on D1 optical pumping and D2 polarimetry of Cs vapour contained in gas-buffered cells. Several technical implementations are described and discussed in detail. The demonstrated sensitivity of the setup is 100fT/Hz^1/2 when operating in the difference mode.","authors_text":"Giuseppe Bevilacqua, Piero Chessa, Valerio Biancalana, Yordanka Dancheva","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-26T09:16:28Z","title":"Multichannel optical atomic magnetometer operating in unshielded environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.06938","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:fe760bb46be67eadf466473f8e407efe217c5cabe9eef031bd1369ad02a8cae3","target":"record","created_at":"2026-05-18T01:17:11Z","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":"bb6f851a6899cfaeef7a23d1e8e5479f43a50799f484a8993ef8801df02f65b6","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-26T09:16:28Z","title_canon_sha256":"5723b296b525c2427fe127e8d9511a9110b1fbf09db92c8f18873b89f9f517e8"},"schema_version":"1.0","source":{"id":"1601.06938","kind":"arxiv","version":2}},"canonical_sha256":"4142f676cbdae7e02cedee3171dadccf9e1ca08720fe6ac8a7f9505c0684a07d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4142f676cbdae7e02cedee3171dadccf9e1ca08720fe6ac8a7f9505c0684a07d","first_computed_at":"2026-05-18T01:17:11.352667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:11.352667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"imtHtFTxC4O+3sN8qzQeXNEcoJ9f7VVJ3oHFYemp1EM3+q5bf9WmUMYa7Ka6JCxEq6KUKLlWWZcbiM+55WxEBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:11.353352Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.06938","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe760bb46be67eadf466473f8e407efe217c5cabe9eef031bd1369ad02a8cae3","sha256:ec40c44e6bc0a1d6c848eb091b50b8a4af477f51f4060d2939d4da1060963ab8"],"state_sha256":"8e43f56f9c749b17e0231f6f37bb8cf224329da40b7d54d484c8ba40fd01c242"}