{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:W3HWD33DTW46Q65EHGT255KVB5","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":"aa76e2373726627c7ebc2637bee8dd3677dafd5fa521b6b577210e0121a2d5d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-21T20:26:50Z","title_canon_sha256":"df6a4938bdd3342166d0b95a1a9b5a56bdd838e9a26befbd920fd3d6399a3c36"},"schema_version":"1.0","source":{"id":"1908.08108","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.08108","created_at":"2026-07-04T23:59:09Z"},{"alias_kind":"arxiv_version","alias_value":"1908.08108v1","created_at":"2026-07-04T23:59:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.08108","created_at":"2026-07-04T23:59:09Z"},{"alias_kind":"pith_short_12","alias_value":"W3HWD33DTW46","created_at":"2026-07-04T23:59:09Z"},{"alias_kind":"pith_short_16","alias_value":"W3HWD33DTW46Q65E","created_at":"2026-07-04T23:59:09Z"},{"alias_kind":"pith_short_8","alias_value":"W3HWD33D","created_at":"2026-07-04T23:59:09Z"}],"graph_snapshots":[{"event_id":"sha256:f3a39a9413520c44366704a10235204753f4d72eae6f820d61e28b789d582726","target":"graph","created_at":"2026-07-04T23:59:09Z","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/1908.08108/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Naturally occurring paramagnetic species (PS), such as free radicals and paramagnetic metalloproteins, play an essential role in a multitude of critical physiological processes including metabolism, cell signaling and immune response. These highly dynamic species can also act as intrinsic biomarkers for a variety of disease states whilst synthetic para-magnetic probes targeted to specific sites on biomolecules enable the study of functional information such as tissue oxygenation and redox status in living systems. The work presented herein describes a new sensing method that exploits the spin ","authors_text":"Joshua Colm Price, Kaarjel K. Narayanasamy, Melissa Louise Mather, Philippe Barrie Wilson, Simon James Levett, Thomas David Bateman-Price, Valentin Radu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-21T20:26:50Z","title":"Dynamic quantum sensing of paramagnetic species using nitrogen-vacancy centers in diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.08108","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":"sha256:80714d971cf076a037e14229a79246b0f092f3cf0b5de3b174a7a1ea1110425a","target":"record","created_at":"2026-07-04T23:59:09Z","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":"aa76e2373726627c7ebc2637bee8dd3677dafd5fa521b6b577210e0121a2d5d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-21T20:26:50Z","title_canon_sha256":"df6a4938bdd3342166d0b95a1a9b5a56bdd838e9a26befbd920fd3d6399a3c36"},"schema_version":"1.0","source":{"id":"1908.08108","kind":"arxiv","version":1}},"canonical_sha256":"b6cf61ef639db9e87ba439a7aef5550f7b4f05b76abd3517b39c49974a316ad9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6cf61ef639db9e87ba439a7aef5550f7b4f05b76abd3517b39c49974a316ad9","first_computed_at":"2026-07-04T23:59:09.735212Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:59:09.735212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kOAoHrDjXYIK3B4axU8PcRrzdN1GttuubKFPYtMuMjw93zNDftW6s7ChDTJAmPAFr31688kbm6gxIZAXvB7yDA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:59:09.735684Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.08108","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:80714d971cf076a037e14229a79246b0f092f3cf0b5de3b174a7a1ea1110425a","sha256:f3a39a9413520c44366704a10235204753f4d72eae6f820d61e28b789d582726"],"state_sha256":"80d48888eeddbeebd62d7fb3d8c9643e7bfa6ce2071f8a2ca571eba97996f6ae"}