{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JYZJ5TCB7A5V23UQGJD2PL6O4A","short_pith_number":"pith:JYZJ5TCB","canonical_record":{"source":{"id":"1407.3134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-11T12:41:38Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"a0fd0f6ff15aeb17a6e1a338c8c76a52e801ce06a8009505a522c69289d3155b","abstract_canon_sha256":"90deb19957303dc734121170e2a02633007ed0ae535f673fc4ad7e3a52c0a57d"},"schema_version":"1.0"},"canonical_sha256":"4e329ecc41f83b5d6e903247a7afcee02b9ed273b390870230ca28d6b36a9d49","source":{"kind":"arxiv","id":"1407.3134","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3134","created_at":"2026-05-18T01:26:10Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3134v1","created_at":"2026-05-18T01:26:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3134","created_at":"2026-05-18T01:26:10Z"},{"alias_kind":"pith_short_12","alias_value":"JYZJ5TCB7A5V","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JYZJ5TCB7A5V23UQ","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JYZJ5TCB","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JYZJ5TCB7A5V23UQGJD2PL6O4A","target":"record","payload":{"canonical_record":{"source":{"id":"1407.3134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-11T12:41:38Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"a0fd0f6ff15aeb17a6e1a338c8c76a52e801ce06a8009505a522c69289d3155b","abstract_canon_sha256":"90deb19957303dc734121170e2a02633007ed0ae535f673fc4ad7e3a52c0a57d"},"schema_version":"1.0"},"canonical_sha256":"4e329ecc41f83b5d6e903247a7afcee02b9ed273b390870230ca28d6b36a9d49","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:26:10.955286Z","signature_b64":"iQo4mGjrtsYnIQtz/2D+ThCibv+IfgZuRYTA2YVjTX0blOrp8MRMxt2NaEK+UhYmKDNH9AxAtAyOOOu2zshbDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e329ecc41f83b5d6e903247a7afcee02b9ed273b390870230ca28d6b36a9d49","last_reissued_at":"2026-05-18T01:26:10.954652Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:26:10.954652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.3134","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":"2026-05-18T01:26:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7OUdcuBTaGcHm85BX29YtDOCyeiXZ4EqplV1b1hiYMB8WovsS18kBNI3El4F3dTCp8sqizlfdpzfb9txfmaxDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T03:21:47.005726Z"},"content_sha256":"a08c0047ffd3e27aa42ba44505743f86294973cb97335aba02d4c55a1c496b0e","schema_version":"1.0","event_id":"sha256:a08c0047ffd3e27aa42ba44505743f86294973cb97335aba02d4c55a1c496b0e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JYZJ5TCB7A5V23UQGJD2PL6O4A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Atomic-scale nuclear spin imaging using quantum-assisted sensors in diamond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"quant-ph","authors_text":"Ashok Ajoy, Mikhail D. Lukin, Paola Cappellaro, Ronald L. Walsworth, Ulf Bissbort","submitted_at":"2014-07-11T12:41:38Z","abstract_excerpt":"Nuclear spin imaging at the atomic level is essential for the understanding of fundamental biological phenomena and for applications such as drug discovery. The advent of novel nano-scale sensors has given hope of achieving the long-standing goal of single-protein, high spatial-resolution structure determination in their natural environment and ambient conditions. In particular, quantum sensors based on the spin-dependent photoluminescence of Nitrogen Vacancy (NV) centers in diamond have recently been used to detect nanoscale ensembles of external nuclear spins. While NV sensitivity is approac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3134","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":"2026-05-18T01:26:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tezbxBiZEpqazhLO8PqSxHhxNfNtK3MqWVA4A0vCsgLdaEsWD0QrZgNVRTcz50zJl2XjamasQ39584CWIOteDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T03:21:47.006391Z"},"content_sha256":"ab420ddd4b46b06b8577d78aa1e6f523e4f28393159a7b7f24212acc2acd2523","schema_version":"1.0","event_id":"sha256:ab420ddd4b46b06b8577d78aa1e6f523e4f28393159a7b7f24212acc2acd2523"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A/bundle.json","state_url":"https://pith.science/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A/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":"2026-06-12T03:21:47Z","links":{"resolver":"https://pith.science/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A","bundle":"https://pith.science/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A/bundle.json","state":"https://pith.science/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JYZJ5TCB7A5V23UQGJD2PL6O4A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JYZJ5TCB7A5V23UQGJD2PL6O4A","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":"90deb19957303dc734121170e2a02633007ed0ae535f673fc4ad7e3a52c0a57d","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-11T12:41:38Z","title_canon_sha256":"a0fd0f6ff15aeb17a6e1a338c8c76a52e801ce06a8009505a522c69289d3155b"},"schema_version":"1.0","source":{"id":"1407.3134","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3134","created_at":"2026-05-18T01:26:10Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3134v1","created_at":"2026-05-18T01:26:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3134","created_at":"2026-05-18T01:26:10Z"},{"alias_kind":"pith_short_12","alias_value":"JYZJ5TCB7A5V","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JYZJ5TCB7A5V23UQ","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JYZJ5TCB","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:ab420ddd4b46b06b8577d78aa1e6f523e4f28393159a7b7f24212acc2acd2523","target":"graph","created_at":"2026-05-18T01:26:10Z","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":"Nuclear spin imaging at the atomic level is essential for the understanding of fundamental biological phenomena and for applications such as drug discovery. The advent of novel nano-scale sensors has given hope of achieving the long-standing goal of single-protein, high spatial-resolution structure determination in their natural environment and ambient conditions. In particular, quantum sensors based on the spin-dependent photoluminescence of Nitrogen Vacancy (NV) centers in diamond have recently been used to detect nanoscale ensembles of external nuclear spins. While NV sensitivity is approac","authors_text":"Ashok Ajoy, Mikhail D. Lukin, Paola Cappellaro, Ronald L. Walsworth, Ulf Bissbort","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-11T12:41:38Z","title":"Atomic-scale nuclear spin imaging using quantum-assisted sensors in diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3134","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:a08c0047ffd3e27aa42ba44505743f86294973cb97335aba02d4c55a1c496b0e","target":"record","created_at":"2026-05-18T01:26:10Z","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":"90deb19957303dc734121170e2a02633007ed0ae535f673fc4ad7e3a52c0a57d","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-11T12:41:38Z","title_canon_sha256":"a0fd0f6ff15aeb17a6e1a338c8c76a52e801ce06a8009505a522c69289d3155b"},"schema_version":"1.0","source":{"id":"1407.3134","kind":"arxiv","version":1}},"canonical_sha256":"4e329ecc41f83b5d6e903247a7afcee02b9ed273b390870230ca28d6b36a9d49","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e329ecc41f83b5d6e903247a7afcee02b9ed273b390870230ca28d6b36a9d49","first_computed_at":"2026-05-18T01:26:10.954652Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:26:10.954652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iQo4mGjrtsYnIQtz/2D+ThCibv+IfgZuRYTA2YVjTX0blOrp8MRMxt2NaEK+UhYmKDNH9AxAtAyOOOu2zshbDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:26:10.955286Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.3134","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a08c0047ffd3e27aa42ba44505743f86294973cb97335aba02d4c55a1c496b0e","sha256:ab420ddd4b46b06b8577d78aa1e6f523e4f28393159a7b7f24212acc2acd2523"],"state_sha256":"a80240acbeaf2b07d2bb1960f6f840aeb8d2e9ed48a99cb9861dd37d058fabd5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ib5C1p7ud0yQ2yPWGfrhhnM5HUBgupkV8gDar1gzZ+iCuNr21CerH5S6dgLRrsCNCEUkASoJ+mGhhOQ/cEphCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T03:21:47.010552Z","bundle_sha256":"35c5113ea7cd395bbc00f7bd2d8131fdad0d9570fac6346ebdf19d7245cd580a"}}