{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:UGM4R35NINGG3FGKDTCBFW54ZA","short_pith_number":"pith:UGM4R35N","canonical_record":{"source":{"id":"1710.09414","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-10-25T18:31:30Z","cross_cats_sorted":["cond-mat.mes-hall","physics.chem-ph"],"title_canon_sha256":"478d0be0e16e670fa483b5bc29d60e9299d68d3336a358d068f5d0c9cf5926a4","abstract_canon_sha256":"e1096642bc5631c2183d4278cb226d009a63679e3d3cc53b5ea300926e938839"},"schema_version":"1.0"},"canonical_sha256":"a199c8efad434c6d94ca1cc412dbbcc80c3df082b972a3abee83fbb76715a9f7","source":{"kind":"arxiv","id":"1710.09414","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09414","created_at":"2026-05-18T00:06:41Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09414v2","created_at":"2026-05-18T00:06:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09414","created_at":"2026-05-18T00:06:41Z"},{"alias_kind":"pith_short_12","alias_value":"UGM4R35NINGG","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UGM4R35NINGG3FGK","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UGM4R35N","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:UGM4R35NINGG3FGKDTCBFW54ZA","target":"record","payload":{"canonical_record":{"source":{"id":"1710.09414","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-10-25T18:31:30Z","cross_cats_sorted":["cond-mat.mes-hall","physics.chem-ph"],"title_canon_sha256":"478d0be0e16e670fa483b5bc29d60e9299d68d3336a358d068f5d0c9cf5926a4","abstract_canon_sha256":"e1096642bc5631c2183d4278cb226d009a63679e3d3cc53b5ea300926e938839"},"schema_version":"1.0"},"canonical_sha256":"a199c8efad434c6d94ca1cc412dbbcc80c3df082b972a3abee83fbb76715a9f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:41.271111Z","signature_b64":"Q9PPX+7Jkva5dBahndBDCVAuG/iH0OLqlrR3/XcjBDdrtPKARFJYZy7QbQvLfqH87QQ4cgt4ELqTL/YLisO3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a199c8efad434c6d94ca1cc412dbbcc80c3df082b972a3abee83fbb76715a9f7","last_reissued_at":"2026-05-18T00:06:41.270423Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:41.270423Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.09414","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:06:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WsOSdH8xzCog2hKnR+OMwad8U5zvokwqqrjry9pO46nSSOhurxEWf8wh2TxIX7rho4OLNQNm9g0RFM9M1IpuBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:38:01.833274Z"},"content_sha256":"a8576529bfa2a2c70144cd73b85a18cc8f85d2b2554749907c0c23c0b7e7ca7c","schema_version":"1.0","event_id":"sha256:a8576529bfa2a2c70144cd73b85a18cc8f85d2b2554749907c0c23c0b7e7ca7c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:UGM4R35NINGG3FGKDTCBFW54ZA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultracentrifugation for ultrafine nanodiamond fractionation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.chem-ph"],"primary_cat":"physics.app-ph","authors_text":"A. V. Shvidchenko, D. A. Kirilenko, E. D. Eidelman, N. A. Besedina, S. V. Koniakhin","submitted_at":"2017-10-25T18:31:30Z","abstract_excerpt":"In this paper we propose a method for ultrafine fractionation of nanodiamonds using the differential centrifugation in the fields up to 215000g. The developed protocols yield 4-6 nm fraction giving main contribution to the light scattering intensity. The desired 4-6 nm fraction can be obtained from various types of initial nanodiamonds: three types of detonation nanodiamonds differing in purifying methods, laser synthesis nanodiamonds and nanodiamonds made by milling. The characterization of the obtained hydrosols was conducted with Dynamic Light Scattering, Zeta potential measurements, powder"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09414","kind":"arxiv","version":2},"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":"2026-05-18T00:06:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zg1s0xvq9G65QMMftVa4zDwTE6aoXyO2X+TsInAuQnLG650SnhbJnheF+Jn87lgCjFQFsM6CcdRBarF8K6WiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:38:01.833648Z"},"content_sha256":"ca16a514c0a0bbe7f9b20d72f8c89eeb5ed34c9b24439cacef6419209a7b5f39","schema_version":"1.0","event_id":"sha256:ca16a514c0a0bbe7f9b20d72f8c89eeb5ed34c9b24439cacef6419209a7b5f39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UGM4R35NINGG3FGKDTCBFW54ZA/bundle.json","state_url":"https://pith.science/pith/UGM4R35NINGG3FGKDTCBFW54ZA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UGM4R35NINGG3FGKDTCBFW54ZA/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":"2026-05-28T05:38:01Z","links":{"resolver":"https://pith.science/pith/UGM4R35NINGG3FGKDTCBFW54ZA","bundle":"https://pith.science/pith/UGM4R35NINGG3FGKDTCBFW54ZA/bundle.json","state":"https://pith.science/pith/UGM4R35NINGG3FGKDTCBFW54ZA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UGM4R35NINGG3FGKDTCBFW54ZA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:UGM4R35NINGG3FGKDTCBFW54ZA","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":"e1096642bc5631c2183d4278cb226d009a63679e3d3cc53b5ea300926e938839","cross_cats_sorted":["cond-mat.mes-hall","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-10-25T18:31:30Z","title_canon_sha256":"478d0be0e16e670fa483b5bc29d60e9299d68d3336a358d068f5d0c9cf5926a4"},"schema_version":"1.0","source":{"id":"1710.09414","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09414","created_at":"2026-05-18T00:06:41Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09414v2","created_at":"2026-05-18T00:06:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09414","created_at":"2026-05-18T00:06:41Z"},{"alias_kind":"pith_short_12","alias_value":"UGM4R35NINGG","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UGM4R35NINGG3FGK","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UGM4R35N","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:ca16a514c0a0bbe7f9b20d72f8c89eeb5ed34c9b24439cacef6419209a7b5f39","target":"graph","created_at":"2026-05-18T00:06:41Z","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":"In this paper we propose a method for ultrafine fractionation of nanodiamonds using the differential centrifugation in the fields up to 215000g. The developed protocols yield 4-6 nm fraction giving main contribution to the light scattering intensity. The desired 4-6 nm fraction can be obtained from various types of initial nanodiamonds: three types of detonation nanodiamonds differing in purifying methods, laser synthesis nanodiamonds and nanodiamonds made by milling. The characterization of the obtained hydrosols was conducted with Dynamic Light Scattering, Zeta potential measurements, powder","authors_text":"A. V. Shvidchenko, D. A. Kirilenko, E. D. Eidelman, N. A. Besedina, S. V. Koniakhin","cross_cats":["cond-mat.mes-hall","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-10-25T18:31:30Z","title":"Ultracentrifugation for ultrafine nanodiamond fractionation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09414","kind":"arxiv","version":2},"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:a8576529bfa2a2c70144cd73b85a18cc8f85d2b2554749907c0c23c0b7e7ca7c","target":"record","created_at":"2026-05-18T00:06:41Z","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":"e1096642bc5631c2183d4278cb226d009a63679e3d3cc53b5ea300926e938839","cross_cats_sorted":["cond-mat.mes-hall","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-10-25T18:31:30Z","title_canon_sha256":"478d0be0e16e670fa483b5bc29d60e9299d68d3336a358d068f5d0c9cf5926a4"},"schema_version":"1.0","source":{"id":"1710.09414","kind":"arxiv","version":2}},"canonical_sha256":"a199c8efad434c6d94ca1cc412dbbcc80c3df082b972a3abee83fbb76715a9f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a199c8efad434c6d94ca1cc412dbbcc80c3df082b972a3abee83fbb76715a9f7","first_computed_at":"2026-05-18T00:06:41.270423Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:41.270423Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q9PPX+7Jkva5dBahndBDCVAuG/iH0OLqlrR3/XcjBDdrtPKARFJYZy7QbQvLfqH87QQ4cgt4ELqTL/YLisO3AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:41.271111Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.09414","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8576529bfa2a2c70144cd73b85a18cc8f85d2b2554749907c0c23c0b7e7ca7c","sha256:ca16a514c0a0bbe7f9b20d72f8c89eeb5ed34c9b24439cacef6419209a7b5f39"],"state_sha256":"2706cf096dfc756ae65c1256510a4b68dd4577c8dbde5f8f36c892c3d2966c9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e3xIXxkHoRU4T2Q7Mz7iuKoCGNvdpK0kXMyscLzpJN3pZJ4z3sDZWfubNlMIhL1FmYwCvqLA1mx9mi//a7Y1Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T05:38:01.835681Z","bundle_sha256":"5c2cc22b8c2ff10c8210245cbd6c6a93840928cab0669fc271b75eb493959aa0"}}