{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:L7ZZFKOQRNP3HQBYYK5OXWRBWC","short_pith_number":"pith:L7ZZFKOQ","canonical_record":{"source":{"id":"1805.00461","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-25T19:40:56Z","cross_cats_sorted":[],"title_canon_sha256":"6799345a797d202fdf84b0bc06c0d93a08333ef8d341fae15c0a02ec07ef1479","abstract_canon_sha256":"c97a78b06b33489eb25ad4735471b090b58a0f59ba1e7f2a7aa1df36876afb5f"},"schema_version":"1.0"},"canonical_sha256":"5ff392a9d08b5fb3c038c2baebda21b0a44701bc07b5fbedce115279c9902b31","source":{"kind":"arxiv","id":"1805.00461","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.00461","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"arxiv_version","alias_value":"1805.00461v4","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.00461","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"pith_short_12","alias_value":"L7ZZFKOQRNP3","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"L7ZZFKOQRNP3HQBY","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"L7ZZFKOQ","created_at":"2026-05-18T12:32:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:L7ZZFKOQRNP3HQBYYK5OXWRBWC","target":"record","payload":{"canonical_record":{"source":{"id":"1805.00461","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-25T19:40:56Z","cross_cats_sorted":[],"title_canon_sha256":"6799345a797d202fdf84b0bc06c0d93a08333ef8d341fae15c0a02ec07ef1479","abstract_canon_sha256":"c97a78b06b33489eb25ad4735471b090b58a0f59ba1e7f2a7aa1df36876afb5f"},"schema_version":"1.0"},"canonical_sha256":"5ff392a9d08b5fb3c038c2baebda21b0a44701bc07b5fbedce115279c9902b31","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:56.171954Z","signature_b64":"OEzv0yTq5DywrtupUX897qA5BVjAd84QlP9JkIgiQlR9kKNE9KmsBlZ9fGHlVpj+/N7YqlOyEVYJuU8qdwaoAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ff392a9d08b5fb3c038c2baebda21b0a44701bc07b5fbedce115279c9902b31","last_reissued_at":"2026-05-18T00:00:56.171376Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:56.171376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.00461","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pgSlrtZO1fC/ntCHGVEGZzDwqHoampZhNd6u7syDBqyMEmp/m29+gaN5G8ctHDiGq+8VDS0R26qVhsW/A/C1BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:00:43.181791Z"},"content_sha256":"f8fb4d1ae5c8f92060e19ea222657231fa41e994bb0d8a344a6431e8efcaaddc","schema_version":"1.0","event_id":"sha256:f8fb4d1ae5c8f92060e19ea222657231fa41e994bb0d8a344a6431e8efcaaddc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:L7ZZFKOQRNP3HQBYYK5OXWRBWC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nuclear recoil spectroscopy of levitated particles","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Alexander Malyzhenkov, Alonso Castro, Vyacheslav Lebedev","submitted_at":"2018-04-25T19:40:56Z","abstract_excerpt":"We propose a new method for the detection and characterization of nuclear decay processes. Specifically, we describe how nuclear decay recoil can be observed within small particles levitated in an optical trap with high positional resolution. Precise measurements of the magnitude of each recoil as well as their rate of occurrence can provide accurate information about the isotopic composition of a radioactive sample. We expect that this new technique for nuclear material characterization will be especially useful in the area of nuclear forensic analysis."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.00461","kind":"arxiv","version":4},"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":"2026-05-18T00:00:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gckoCkZX6FDWdzOi3uaJtL9UnGF/vNZMhxYkyEQAZzVB1Qku+UNME43uvFPwW5PnPtQkaHK06F5SgiznZYoRBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:00:43.182414Z"},"content_sha256":"3444c5ac7bd0f3fbdbd46ec509f4acdbe1eea7d2c7815a63ddc8b95c2dfc5422","schema_version":"1.0","event_id":"sha256:3444c5ac7bd0f3fbdbd46ec509f4acdbe1eea7d2c7815a63ddc8b95c2dfc5422"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC/bundle.json","state_url":"https://pith.science/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC/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":"2026-06-02T22:00:43Z","links":{"resolver":"https://pith.science/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC","bundle":"https://pith.science/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC/bundle.json","state":"https://pith.science/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L7ZZFKOQRNP3HQBYYK5OXWRBWC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:L7ZZFKOQRNP3HQBYYK5OXWRBWC","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":"c97a78b06b33489eb25ad4735471b090b58a0f59ba1e7f2a7aa1df36876afb5f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-25T19:40:56Z","title_canon_sha256":"6799345a797d202fdf84b0bc06c0d93a08333ef8d341fae15c0a02ec07ef1479"},"schema_version":"1.0","source":{"id":"1805.00461","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.00461","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"arxiv_version","alias_value":"1805.00461v4","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.00461","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"pith_short_12","alias_value":"L7ZZFKOQRNP3","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"L7ZZFKOQRNP3HQBY","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"L7ZZFKOQ","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:3444c5ac7bd0f3fbdbd46ec509f4acdbe1eea7d2c7815a63ddc8b95c2dfc5422","target":"graph","created_at":"2026-05-18T00:00:56Z","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":"We propose a new method for the detection and characterization of nuclear decay processes. Specifically, we describe how nuclear decay recoil can be observed within small particles levitated in an optical trap with high positional resolution. Precise measurements of the magnitude of each recoil as well as their rate of occurrence can provide accurate information about the isotopic composition of a radioactive sample. We expect that this new technique for nuclear material characterization will be especially useful in the area of nuclear forensic analysis.","authors_text":"Alexander Malyzhenkov, Alonso Castro, Vyacheslav Lebedev","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-25T19:40:56Z","title":"Nuclear recoil spectroscopy of levitated particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.00461","kind":"arxiv","version":4},"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:f8fb4d1ae5c8f92060e19ea222657231fa41e994bb0d8a344a6431e8efcaaddc","target":"record","created_at":"2026-05-18T00:00:56Z","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":"c97a78b06b33489eb25ad4735471b090b58a0f59ba1e7f2a7aa1df36876afb5f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-25T19:40:56Z","title_canon_sha256":"6799345a797d202fdf84b0bc06c0d93a08333ef8d341fae15c0a02ec07ef1479"},"schema_version":"1.0","source":{"id":"1805.00461","kind":"arxiv","version":4}},"canonical_sha256":"5ff392a9d08b5fb3c038c2baebda21b0a44701bc07b5fbedce115279c9902b31","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ff392a9d08b5fb3c038c2baebda21b0a44701bc07b5fbedce115279c9902b31","first_computed_at":"2026-05-18T00:00:56.171376Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:56.171376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OEzv0yTq5DywrtupUX897qA5BVjAd84QlP9JkIgiQlR9kKNE9KmsBlZ9fGHlVpj+/N7YqlOyEVYJuU8qdwaoAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:56.171954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.00461","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8fb4d1ae5c8f92060e19ea222657231fa41e994bb0d8a344a6431e8efcaaddc","sha256:3444c5ac7bd0f3fbdbd46ec509f4acdbe1eea7d2c7815a63ddc8b95c2dfc5422"],"state_sha256":"3c28c897f9fbf1243395343fb3f7372c5a135cba1394692609a4429af88a87a6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nXg03LkT699fHRA2TYQALr/wwT0KRUhhZvMcKVI++Eb5rqicmSCwl6jDKjsx0P5CGp9Fj9zmY1HecLY8/D5tAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:00:43.185354Z","bundle_sha256":"57a5b658a2bf7a527c5ac4e315cf58918b1e67d375b41d8a4fbd340274731837"}}