{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:VTOXV73MLMSJ2JMQFKTO4R44ZL","short_pith_number":"pith:VTOXV73M","canonical_record":{"source":{"id":"2605.20582","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-05-20T00:39:39Z","cross_cats_sorted":[],"title_canon_sha256":"d82ec863f7041f41c7e5319b7e6bc22cd6b97c490ec5bd8fa15d75587c63e05f","abstract_canon_sha256":"5a8dc662e614fa2f9bb7a82d0d741aa4a3297a8ffd483643de9ffd0eac74ef4d"},"schema_version":"1.0"},"canonical_sha256":"acdd7aff6c5b249d25902aa6ee479ccacec6acd29e812e5dae64ea8745fca177","source":{"kind":"arxiv","id":"2605.20582","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.20582","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"arxiv_version","alias_value":"2605.20582v1","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.20582","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"pith_short_12","alias_value":"VTOXV73MLMSJ","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"pith_short_16","alias_value":"VTOXV73MLMSJ2JMQ","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"pith_short_8","alias_value":"VTOXV73M","created_at":"2026-05-21T01:04:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:VTOXV73MLMSJ2JMQFKTO4R44ZL","target":"record","payload":{"canonical_record":{"source":{"id":"2605.20582","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-05-20T00:39:39Z","cross_cats_sorted":[],"title_canon_sha256":"d82ec863f7041f41c7e5319b7e6bc22cd6b97c490ec5bd8fa15d75587c63e05f","abstract_canon_sha256":"5a8dc662e614fa2f9bb7a82d0d741aa4a3297a8ffd483643de9ffd0eac74ef4d"},"schema_version":"1.0"},"canonical_sha256":"acdd7aff6c5b249d25902aa6ee479ccacec6acd29e812e5dae64ea8745fca177","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T01:04:43.433283Z","signature_b64":"o+p2K9sDhxIs9QhMaqPXXHN/DcjHdpZrNVe18+462y/ZLDKmvbWTOy1+gORn60UxSuIQApe1o8a/AgkNDZ0vDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"acdd7aff6c5b249d25902aa6ee479ccacec6acd29e812e5dae64ea8745fca177","last_reissued_at":"2026-05-21T01:04:43.432569Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T01:04:43.432569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.20582","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":"2026-05-21T01:04:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X8zvsZFEM4nuBAwSDaOeRFosXbxl9p8CFw3jKKif7qfEBNt/Wgt4jgozSVNzVBn5+5/owGS6QSft8mn7jdNEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:47:09.433004Z"},"content_sha256":"afa23f68930e492ad93a33113b5632b297da6d544b7b2d3fd5d0dfe7ae4a8607","schema_version":"1.0","event_id":"sha256:afa23f68930e492ad93a33113b5632b297da6d544b7b2d3fd5d0dfe7ae4a8607"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:VTOXV73MLMSJ2JMQFKTO4R44ZL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gold Bipyramids as a Promising Alternative to Gold Nanorods for Analytical and Biomedical Applications","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Andrey M. Burov, Arina V. Drozd, Elena G. Zavyalova, Igor V. Borisov, Nikolai G. Khlebtsov, Sergey V. Zarkov","submitted_at":"2026-05-20T00:39:39Z","abstract_excerpt":"Pentagonal gold bipyramids with dimensions of 75x25 nm and a longitudinal plasmon resonance (PR) at 753 nm are synthesized. For comparison, gold nanorods with a diameter of 20 nm, lengths ranging from 95 to 50 nm, and longitudinal PR from 945 to 644 nm were synthesized by chemical etching. The samples were characterized by UV-vis spectroscopy and transmission electron microscopy (TEM). It is shown that the absorption spectral quality factor of the bipyramids is significantly higher than that of the nanorods. To compare the nanoparticles as platforms for surface-enhanced Raman scattering (SERS)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.20582","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.20582/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-05-21T01:04:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J3QGVLOQTOmSSHGNucarBi7Z5lNr4/gwpr3qENJT4bG03rpMQMkd0bUB6pVWCch4TEjotr0WOXMruilAqHV6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:47:09.433402Z"},"content_sha256":"5f7f2f91dba30ff76eacba6a3397cbb042347c285edb94a7649065765d59ad6c","schema_version":"1.0","event_id":"sha256:5f7f2f91dba30ff76eacba6a3397cbb042347c285edb94a7649065765d59ad6c"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:VTOXV73MLMSJ2JMQFKTO4R44ZL","target":"integrity","payload":{"note":"Identifier '10.1021/acs.jpcc.4c08818a' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"Nguyen AL, Griffin QJ, Wang A, Sahai S , Jing H. Optimization of the surfactant ratio in the formation of penta -twinned seeds for precision synthesis of gold nanobipyramids with tunable plasmon resonances . J Phys Chem C 2025 ;129:4303–12.","arxiv_id":"2605.20582","detector":"doi_compliance","evidence":{"doi":"10.1021/acs.jpcc.4c08818a","arxiv_id":null,"ref_index":43,"raw_excerpt":"Nguyen AL, Griffin QJ, Wang A, Sahai S , Jing H. Optimization of the surfactant ratio in the formation of penta -twinned seeds for precision synthesis of gold nanobipyramids with tunable plasmon resonances . J Phys Chem C 2025 ;129:4303–12. https://doi.org/10.1021/acs.jpcc.4c08818A","verdict_class":"cross_source","checked_sources":["crossref_by_doi","openalex_by_doi","doi_org_head"]},"severity":"critical","ref_index":43,"audited_at":"2026-05-21T03:24:06.340082Z","event_type":"pith.integrity.v1","detected_doi":"10.1021/acs.jpcc.4c08818a","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"unresolvable_identifier","evidence_hash":"2ade5e6398d36b3db1a973939b0c6b8bd8a7056aa157dcec9c7e32ebe8f3cb56","paper_version":1,"verdict_class":"cross_source","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":5632,"payload_sha256":"355b2bb7727eafabc9e2cecdcd046b3eda8cec6e3ce4bab40f172b31fa362714","signature_b64":"1T/VMQ/GdZ641rvfm3AXchp1CHfOkP5z9rc5oZjANPP51sDsCGNaosqfEsL5pTnbKDLnxv+abwkh+GTdaP4OCg==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-21T03:28:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EUe3xzSN1PguVEKAgzNspvAo2uvyLBSdraQK2pJTPcxL15MmNO+VvW4EPpQKP1l14f7UGhXrL6jSuxOo+q85Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:47:09.434512Z"},"content_sha256":"9a21bbde01b53d6c7d26a10e1e680c8bd9fbd63948f7ffd87d10b170532ba9e5","schema_version":"1.0","event_id":"sha256:9a21bbde01b53d6c7d26a10e1e680c8bd9fbd63948f7ffd87d10b170532ba9e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL/bundle.json","state_url":"https://pith.science/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL/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":"2026-05-21T14:47:09Z","links":{"resolver":"https://pith.science/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL","bundle":"https://pith.science/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL/bundle.json","state":"https://pith.science/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VTOXV73MLMSJ2JMQFKTO4R44ZL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VTOXV73MLMSJ2JMQFKTO4R44ZL","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"5a8dc662e614fa2f9bb7a82d0d741aa4a3297a8ffd483643de9ffd0eac74ef4d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-05-20T00:39:39Z","title_canon_sha256":"d82ec863f7041f41c7e5319b7e6bc22cd6b97c490ec5bd8fa15d75587c63e05f"},"schema_version":"1.0","source":{"id":"2605.20582","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.20582","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"arxiv_version","alias_value":"2605.20582v1","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.20582","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"pith_short_12","alias_value":"VTOXV73MLMSJ","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"pith_short_16","alias_value":"VTOXV73MLMSJ2JMQ","created_at":"2026-05-21T01:04:43Z"},{"alias_kind":"pith_short_8","alias_value":"VTOXV73M","created_at":"2026-05-21T01:04:43Z"}],"graph_snapshots":[{"event_id":"sha256:5f7f2f91dba30ff76eacba6a3397cbb042347c285edb94a7649065765d59ad6c","target":"graph","created_at":"2026-05-21T01:04:43Z","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/2605.20582/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pentagonal gold bipyramids with dimensions of 75x25 nm and a longitudinal plasmon resonance (PR) at 753 nm are synthesized. For comparison, gold nanorods with a diameter of 20 nm, lengths ranging from 95 to 50 nm, and longitudinal PR from 945 to 644 nm were synthesized by chemical etching. The samples were characterized by UV-vis spectroscopy and transmission electron microscopy (TEM). It is shown that the absorption spectral quality factor of the bipyramids is significantly higher than that of the nanorods. To compare the nanoparticles as platforms for surface-enhanced Raman scattering (SERS)","authors_text":"Andrey M. Burov, Arina V. Drozd, Elena G. Zavyalova, Igor V. Borisov, Nikolai G. Khlebtsov, Sergey V. Zarkov","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-05-20T00:39:39Z","title":"Gold Bipyramids as a Promising Alternative to Gold Nanorods for Analytical and Biomedical Applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.20582","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:afa23f68930e492ad93a33113b5632b297da6d544b7b2d3fd5d0dfe7ae4a8607","target":"record","created_at":"2026-05-21T01:04:43Z","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":"5a8dc662e614fa2f9bb7a82d0d741aa4a3297a8ffd483643de9ffd0eac74ef4d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-05-20T00:39:39Z","title_canon_sha256":"d82ec863f7041f41c7e5319b7e6bc22cd6b97c490ec5bd8fa15d75587c63e05f"},"schema_version":"1.0","source":{"id":"2605.20582","kind":"arxiv","version":1}},"canonical_sha256":"acdd7aff6c5b249d25902aa6ee479ccacec6acd29e812e5dae64ea8745fca177","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"acdd7aff6c5b249d25902aa6ee479ccacec6acd29e812e5dae64ea8745fca177","first_computed_at":"2026-05-21T01:04:43.432569Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-21T01:04:43.432569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o+p2K9sDhxIs9QhMaqPXXHN/DcjHdpZrNVe18+462y/ZLDKmvbWTOy1+gORn60UxSuIQApe1o8a/AgkNDZ0vDw==","signature_status":"signed_v1","signed_at":"2026-05-21T01:04:43.433283Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.20582","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:afa23f68930e492ad93a33113b5632b297da6d544b7b2d3fd5d0dfe7ae4a8607","sha256:5f7f2f91dba30ff76eacba6a3397cbb042347c285edb94a7649065765d59ad6c","sha256:9a21bbde01b53d6c7d26a10e1e680c8bd9fbd63948f7ffd87d10b170532ba9e5"],"state_sha256":"332c6657dd6cf06193583c779405476ad9c7df9a9286d46f3b7b97ca86494979"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YJ8Kjp+7/zjUBuxrsgNcppZ55aYxS2+wOQWoNgE4371soxpRTGSbAWTr32jOFS84rAuy2EAPETL+h0k6zSfYDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T14:47:09.436997Z","bundle_sha256":"139bcc4d10d883c6b90e7c2ff77f71ed7f87405d2f8e98dc63923eec6bdd2e67"}}