{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:QBPWLLM4TZOEVEYRX7EMPB4545","short_pith_number":"pith:QBPWLLM4","canonical_record":{"source":{"id":"1604.02793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-11T05:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"aa1caa3943b8bc2f2055c7a0ccebc6ff888713ccb1b0da6d1ea1054513af14c9","abstract_canon_sha256":"022a0f59ce82fdcde43f9e9534bc6a54c93bfe0cea564ff4b6d84796f1df10a9"},"schema_version":"1.0"},"canonical_sha256":"805f65ad9c9e5c4a9311bfc8c7879de778e59d1a3549d27e945ef1a813133816","source":{"kind":"arxiv","id":"1604.02793","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.02793","created_at":"2026-05-18T01:17:22Z"},{"alias_kind":"arxiv_version","alias_value":"1604.02793v1","created_at":"2026-05-18T01:17:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.02793","created_at":"2026-05-18T01:17:22Z"},{"alias_kind":"pith_short_12","alias_value":"QBPWLLM4TZOE","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"QBPWLLM4TZOEVEYR","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"QBPWLLM4","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:QBPWLLM4TZOEVEYRX7EMPB4545","target":"record","payload":{"canonical_record":{"source":{"id":"1604.02793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-11T05:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"aa1caa3943b8bc2f2055c7a0ccebc6ff888713ccb1b0da6d1ea1054513af14c9","abstract_canon_sha256":"022a0f59ce82fdcde43f9e9534bc6a54c93bfe0cea564ff4b6d84796f1df10a9"},"schema_version":"1.0"},"canonical_sha256":"805f65ad9c9e5c4a9311bfc8c7879de778e59d1a3549d27e945ef1a813133816","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:17:22.142578Z","signature_b64":"KvTYS5fYhJMgAh8jDCUX39o3Z6GjvF+OlQNCL7IkfQ8olBidepJbZ94VX9gD/30whyYVd1gBNkjb56E0FH51BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"805f65ad9c9e5c4a9311bfc8c7879de778e59d1a3549d27e945ef1a813133816","last_reissued_at":"2026-05-18T01:17:22.142015Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:17:22.142015Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.02793","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":"2026-05-18T01:17:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vmc8OCKaiqrhLKiVv3JpQZl/7Th2z9cTUFLbbQn8fSHJus0E65LOXQcmw3ollFQ8bvhKz+dRQNCP5ReTnS8cDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T14:52:54.246127Z"},"content_sha256":"789db670f474970194875b16da31094cd20b18c978dd416e66ba526ce0b03ae4","schema_version":"1.0","event_id":"sha256:789db670f474970194875b16da31094cd20b18c978dd416e66ba526ce0b03ae4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:QBPWLLM4TZOEVEYRX7EMPB4545","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gold nanoflowers as efficient hot-spots for surface enhanced Raman scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Anirban Chakraborti, Arun Singh Patel, G.Vijaya Prakash, Jaydeep Bhattacharya, Pawan K. Kanaujia, Subhavna Juneja","submitted_at":"2016-04-11T05:00:03Z","abstract_excerpt":"Gold nanoflowers are known for their use as efficient host for surface enhanced Raman scattering of organic dye molecules. In this article, gold nanoflowers have been synthesised and rhodamine 6 G (R6G) molecules have been used as probe molecules. It is found that the gold nanoflowers can detect the presence of R6G molecules upto 10^{-10} M. The petals of these nanoflowers play an important role for the enhancement of Raman signals, and the intensity of Raman signals is enhanced many folds in presence of gold nanoflowers - the enhancement factor is of the order of 10^6. This is explained in te"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.02793","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":"2026-05-18T01:17:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8N4wYcld1xRFE8F55eBA9SmXslFsUpysscmzwS9KwpGBE2m9WUFCf1YjYmg/V/DJuZlw/UWLFQunpinkzbWbDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T14:52:54.246519Z"},"content_sha256":"324d80c5a751bcb186492c797367a40c68b0e89d266e035c7c46662b182e7f4c","schema_version":"1.0","event_id":"sha256:324d80c5a751bcb186492c797367a40c68b0e89d266e035c7c46662b182e7f4c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QBPWLLM4TZOEVEYRX7EMPB4545/bundle.json","state_url":"https://pith.science/pith/QBPWLLM4TZOEVEYRX7EMPB4545/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QBPWLLM4TZOEVEYRX7EMPB4545/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":"2026-06-23T14:52:54Z","links":{"resolver":"https://pith.science/pith/QBPWLLM4TZOEVEYRX7EMPB4545","bundle":"https://pith.science/pith/QBPWLLM4TZOEVEYRX7EMPB4545/bundle.json","state":"https://pith.science/pith/QBPWLLM4TZOEVEYRX7EMPB4545/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QBPWLLM4TZOEVEYRX7EMPB4545/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:QBPWLLM4TZOEVEYRX7EMPB4545","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":"022a0f59ce82fdcde43f9e9534bc6a54c93bfe0cea564ff4b6d84796f1df10a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-11T05:00:03Z","title_canon_sha256":"aa1caa3943b8bc2f2055c7a0ccebc6ff888713ccb1b0da6d1ea1054513af14c9"},"schema_version":"1.0","source":{"id":"1604.02793","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.02793","created_at":"2026-05-18T01:17:22Z"},{"alias_kind":"arxiv_version","alias_value":"1604.02793v1","created_at":"2026-05-18T01:17:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.02793","created_at":"2026-05-18T01:17:22Z"},{"alias_kind":"pith_short_12","alias_value":"QBPWLLM4TZOE","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"QBPWLLM4TZOEVEYR","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"QBPWLLM4","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:324d80c5a751bcb186492c797367a40c68b0e89d266e035c7c46662b182e7f4c","target":"graph","created_at":"2026-05-18T01:17:22Z","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":"Gold nanoflowers are known for their use as efficient host for surface enhanced Raman scattering of organic dye molecules. In this article, gold nanoflowers have been synthesised and rhodamine 6 G (R6G) molecules have been used as probe molecules. It is found that the gold nanoflowers can detect the presence of R6G molecules upto 10^{-10} M. The petals of these nanoflowers play an important role for the enhancement of Raman signals, and the intensity of Raman signals is enhanced many folds in presence of gold nanoflowers - the enhancement factor is of the order of 10^6. This is explained in te","authors_text":"Anirban Chakraborti, Arun Singh Patel, G.Vijaya Prakash, Jaydeep Bhattacharya, Pawan K. Kanaujia, Subhavna Juneja","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-11T05:00:03Z","title":"Gold nanoflowers as efficient hot-spots for surface enhanced Raman scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.02793","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":"sha256:789db670f474970194875b16da31094cd20b18c978dd416e66ba526ce0b03ae4","target":"record","created_at":"2026-05-18T01:17:22Z","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":"022a0f59ce82fdcde43f9e9534bc6a54c93bfe0cea564ff4b6d84796f1df10a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-11T05:00:03Z","title_canon_sha256":"aa1caa3943b8bc2f2055c7a0ccebc6ff888713ccb1b0da6d1ea1054513af14c9"},"schema_version":"1.0","source":{"id":"1604.02793","kind":"arxiv","version":1}},"canonical_sha256":"805f65ad9c9e5c4a9311bfc8c7879de778e59d1a3549d27e945ef1a813133816","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"805f65ad9c9e5c4a9311bfc8c7879de778e59d1a3549d27e945ef1a813133816","first_computed_at":"2026-05-18T01:17:22.142015Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:22.142015Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KvTYS5fYhJMgAh8jDCUX39o3Z6GjvF+OlQNCL7IkfQ8olBidepJbZ94VX9gD/30whyYVd1gBNkjb56E0FH51BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:22.142578Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.02793","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:789db670f474970194875b16da31094cd20b18c978dd416e66ba526ce0b03ae4","sha256:324d80c5a751bcb186492c797367a40c68b0e89d266e035c7c46662b182e7f4c"],"state_sha256":"27d08654406a1a009a4727905e7fee32af63b1c4fb5086e64f6eef7fc789d1a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"286vOXQV7i+iv+WqVlHeI0Xqyb7zG33cX5STXoOfGst6yoSGQbhORTWj0GohoPWdEHAer3unNcqgKwHKZ6JbAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T14:52:54.248436Z","bundle_sha256":"2816daeb93bda57490ded0ed5e6c98769115177888eea2c39e94ccaf30ae7236"}}