{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BGQH7MQWGXRD2IEPBCGWCBZ3QT","short_pith_number":"pith:BGQH7MQW","canonical_record":{"source":{"id":"1805.10576","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-05-27T03:48:53Z","cross_cats_sorted":[],"title_canon_sha256":"2a2ac6839785cfc8c32640261aec75f4f8316f631f4fa6eba985872f3d61a62e","abstract_canon_sha256":"babbab01172f4decb1ed48dbca9a02d0867bc485d222afc066e5d1e1eb290293"},"schema_version":"1.0"},"canonical_sha256":"09a07fb21635e23d208f088d61073b84eea6f502f65dbe859b6384aee0685703","source":{"kind":"arxiv","id":"1805.10576","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.10576","created_at":"2026-05-18T00:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.10576v1","created_at":"2026-05-18T00:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.10576","created_at":"2026-05-18T00:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"BGQH7MQWGXRD","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BGQH7MQWGXRD2IEP","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BGQH7MQW","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BGQH7MQWGXRD2IEPBCGWCBZ3QT","target":"record","payload":{"canonical_record":{"source":{"id":"1805.10576","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-05-27T03:48:53Z","cross_cats_sorted":[],"title_canon_sha256":"2a2ac6839785cfc8c32640261aec75f4f8316f631f4fa6eba985872f3d61a62e","abstract_canon_sha256":"babbab01172f4decb1ed48dbca9a02d0867bc485d222afc066e5d1e1eb290293"},"schema_version":"1.0"},"canonical_sha256":"09a07fb21635e23d208f088d61073b84eea6f502f65dbe859b6384aee0685703","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:07.026162Z","signature_b64":"oFZ+9SNrr62JY1taWGuIYF5PUBxhFAw5g3RihqDWcqhJN8ljb7o8MX1PPvufKTiEXbdB4Q+aVIY6twZ3X3aMBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09a07fb21635e23d208f088d61073b84eea6f502f65dbe859b6384aee0685703","last_reissued_at":"2026-05-18T00:07:07.025388Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:07.025388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.10576","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":"2026-05-18T00:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hyp1rPFwBXlMRtUGgWt7W7N2BYuMyOJ7EXYvMDIdXumCII/3DJ31wujLxvu0cmowQngQTbFhq91FuXmSTdJIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:04:52.223207Z"},"content_sha256":"aa38ed04e2d35bd437019c1aafa62854d775b5b4cf939fccb372857aae34cb1a","schema_version":"1.0","event_id":"sha256:aa38ed04e2d35bd437019c1aafa62854d775b5b4cf939fccb372857aae34cb1a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BGQH7MQWGXRD2IEPBCGWCBZ3QT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Angle dependent localized surface plasmon resonance from silver nanoparticles embedded in SiO2 thin film","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"D. P. Mahapatra, D. Topwal, G. Vijaya Prakash, H. Gupta, P. Srivastava, Puspendu Guha, R. K. Bommali, S. Ghosh","submitted_at":"2018-05-27T03:48:53Z","abstract_excerpt":"Near surface silver nanoparticles embedded in silicon oxide were obtained by 40 keV silver negative ion implantation without the requirement of an annealing step. Ion beam induced local heating within the film leads to an exo-diffusion of the silver ions towards the film surface resulting in the protrusion of larger nanoparticles. Cross-sectional transmission electron microscopy (XTEM) reveals the presence of poly-disperse nanoparticles (NPs), ranging between 2 nm-20 nm, at different depths of the SiO2 film. The normal incidence reflectance spectrum shows a double kink feature in the vicinity "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.10576","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":"2026-05-18T00:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mx3nJuY8cRskyXygdue+l5SheI2uKT9jhHbmU5m5AuAex6kLE62Rk70kyy5ogCmwy3Wf9qmw8E5z8V5Tk0AtBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:04:52.223586Z"},"content_sha256":"27399c6d5c96de7ef73856e6b1277cd72b945bffeb4d066dfa86ecc96b585250","schema_version":"1.0","event_id":"sha256:27399c6d5c96de7ef73856e6b1277cd72b945bffeb4d066dfa86ecc96b585250"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT/bundle.json","state_url":"https://pith.science/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT/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":"2026-05-28T02:04:52Z","links":{"resolver":"https://pith.science/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT","bundle":"https://pith.science/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT/bundle.json","state":"https://pith.science/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BGQH7MQWGXRD2IEPBCGWCBZ3QT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BGQH7MQWGXRD2IEPBCGWCBZ3QT","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":"babbab01172f4decb1ed48dbca9a02d0867bc485d222afc066e5d1e1eb290293","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-05-27T03:48:53Z","title_canon_sha256":"2a2ac6839785cfc8c32640261aec75f4f8316f631f4fa6eba985872f3d61a62e"},"schema_version":"1.0","source":{"id":"1805.10576","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.10576","created_at":"2026-05-18T00:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.10576v1","created_at":"2026-05-18T00:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.10576","created_at":"2026-05-18T00:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"BGQH7MQWGXRD","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BGQH7MQWGXRD2IEP","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BGQH7MQW","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:27399c6d5c96de7ef73856e6b1277cd72b945bffeb4d066dfa86ecc96b585250","target":"graph","created_at":"2026-05-18T00:07:07Z","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":"Near surface silver nanoparticles embedded in silicon oxide were obtained by 40 keV silver negative ion implantation without the requirement of an annealing step. Ion beam induced local heating within the film leads to an exo-diffusion of the silver ions towards the film surface resulting in the protrusion of larger nanoparticles. Cross-sectional transmission electron microscopy (XTEM) reveals the presence of poly-disperse nanoparticles (NPs), ranging between 2 nm-20 nm, at different depths of the SiO2 film. The normal incidence reflectance spectrum shows a double kink feature in the vicinity ","authors_text":"D. P. Mahapatra, D. Topwal, G. Vijaya Prakash, H. Gupta, P. Srivastava, Puspendu Guha, R. K. Bommali, S. Ghosh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-05-27T03:48:53Z","title":"Angle dependent localized surface plasmon resonance from silver nanoparticles embedded in SiO2 thin film"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.10576","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:aa38ed04e2d35bd437019c1aafa62854d775b5b4cf939fccb372857aae34cb1a","target":"record","created_at":"2026-05-18T00:07:07Z","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":"babbab01172f4decb1ed48dbca9a02d0867bc485d222afc066e5d1e1eb290293","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-05-27T03:48:53Z","title_canon_sha256":"2a2ac6839785cfc8c32640261aec75f4f8316f631f4fa6eba985872f3d61a62e"},"schema_version":"1.0","source":{"id":"1805.10576","kind":"arxiv","version":1}},"canonical_sha256":"09a07fb21635e23d208f088d61073b84eea6f502f65dbe859b6384aee0685703","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09a07fb21635e23d208f088d61073b84eea6f502f65dbe859b6384aee0685703","first_computed_at":"2026-05-18T00:07:07.025388Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:07.025388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oFZ+9SNrr62JY1taWGuIYF5PUBxhFAw5g3RihqDWcqhJN8ljb7o8MX1PPvufKTiEXbdB4Q+aVIY6twZ3X3aMBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:07.026162Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.10576","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa38ed04e2d35bd437019c1aafa62854d775b5b4cf939fccb372857aae34cb1a","sha256:27399c6d5c96de7ef73856e6b1277cd72b945bffeb4d066dfa86ecc96b585250"],"state_sha256":"b9c3a6361a1fec3b1a2741fbe657acd79d474e56aa739d3834fb3394f4eb752d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cL89vWWZSmTgDGLIXv9aGoZSOrcsPS7WDvTwFnGvzid+4wAjpzsBIUYZFlmZ39unV9Th+mPqnZfC3u7cDej/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T02:04:52.225616Z","bundle_sha256":"35f56f54a2fb1fe233e0771c3f00a8b470d2613d197dde4e988c2e3fbf2ab69c"}}