{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:2S2PXCJZ7A7ITCYR2KSNPQY6QY","short_pith_number":"pith:2S2PXCJZ","canonical_record":{"source":{"id":"2502.13512","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-02-19T08:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"941c73e4bc170f4ec328d87f0195c80ab097c5436d0751a1627d56c7780e1797","abstract_canon_sha256":"2e06f81544ef2d8842f2f8184c0b6f96ed2497901a29c77508bbfb0b3cf2a87f"},"schema_version":"1.0"},"canonical_sha256":"d4b4fb8939f83e898b11d2a4d7c31e860ce5abbd29dee060ea1cc1acd737db4f","source":{"kind":"arxiv","id":"2502.13512","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.13512","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"arxiv_version","alias_value":"2502.13512v1","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.13512","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"pith_short_12","alias_value":"2S2PXCJZ7A7I","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"pith_short_16","alias_value":"2S2PXCJZ7A7ITCYR","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"pith_short_8","alias_value":"2S2PXCJZ","created_at":"2026-07-05T10:16:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:2S2PXCJZ7A7ITCYR2KSNPQY6QY","target":"record","payload":{"canonical_record":{"source":{"id":"2502.13512","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-02-19T08:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"941c73e4bc170f4ec328d87f0195c80ab097c5436d0751a1627d56c7780e1797","abstract_canon_sha256":"2e06f81544ef2d8842f2f8184c0b6f96ed2497901a29c77508bbfb0b3cf2a87f"},"schema_version":"1.0"},"canonical_sha256":"d4b4fb8939f83e898b11d2a4d7c31e860ce5abbd29dee060ea1cc1acd737db4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:16:48.418188Z","signature_b64":"ZCDe/cgBt8cz3bV7txZup9hro3FuJlIQs6jLsbquiA+qyeM/aUKDaMIxYIiYPmHH+lScEgWj+bOzrvzcjMqvAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4b4fb8939f83e898b11d2a4d7c31e860ce5abbd29dee060ea1cc1acd737db4f","last_reissued_at":"2026-07-05T10:16:48.417723Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:16:48.417723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.13512","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":"2026-07-05T10:16:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l6vBSNAN9H7d/Exh3Ab3aojRdHDp0vASKQ9/470835tmnWYN1gg4mhQBStf437lJYs7pgO7qulPo9hWX5G9jAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T13:40:05.573952Z"},"content_sha256":"3ec5cc96ee51f2ecabbb93112e325fe7a47cc12db71d0f3a880ff1dfb1edaaa2","schema_version":"1.0","event_id":"sha256:3ec5cc96ee51f2ecabbb93112e325fe7a47cc12db71d0f3a880ff1dfb1edaaa2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:2S2PXCJZ7A7ITCYR2KSNPQY6QY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unravelling the influence of shell thickness in organic functionalized Cu2O nanoparticles on C2+ products distribution in electrocatalytic CO2 reduction","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Hermenegildo Garc\\'ia, Jiajun Hu, Josep Albero, Silvio Osella","submitted_at":"2025-02-19T08:06:51Z","abstract_excerpt":"Cu-based electrocatalysts exhibits enormous potential for electrochemical CO2 conversion to added-value products. However, high selectivity, specially towards C2+ products, remains a critical challenge for its implementation in commercial applications. Herein, we report the preparation of a series of electrocatalysts based on octadecyl amine (ODA) coated Cu2O nanoparticles. HRTEM images show ODA coatings with thickness from 1.2 to 4 nm. DFT calculations predict that at low surface coverage, ODA tends to lay on the Cu2O surface, leaving hydrophilic regions. Oppositely, at high surface coverage,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.13512","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/2502.13512/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":"2026-07-05T10:16:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tQPUnZzvhknupYuaDVnlPIFOAN4QE/fjnljoNDO31CtGSyCDAoo3WAI/+f/M+ic0nrglctRIzSd3wqiIgrK8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T13:40:05.574336Z"},"content_sha256":"80a48fe11c2801b837e9c137f7a3072c8cde7932b5d1caef1153fe83456af626","schema_version":"1.0","event_id":"sha256:80a48fe11c2801b837e9c137f7a3072c8cde7932b5d1caef1153fe83456af626"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY/bundle.json","state_url":"https://pith.science/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY/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":"2026-07-22T13:40:05Z","links":{"resolver":"https://pith.science/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY","bundle":"https://pith.science/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY/bundle.json","state":"https://pith.science/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2S2PXCJZ7A7ITCYR2KSNPQY6QY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:2S2PXCJZ7A7ITCYR2KSNPQY6QY","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":"2e06f81544ef2d8842f2f8184c0b6f96ed2497901a29c77508bbfb0b3cf2a87f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-02-19T08:06:51Z","title_canon_sha256":"941c73e4bc170f4ec328d87f0195c80ab097c5436d0751a1627d56c7780e1797"},"schema_version":"1.0","source":{"id":"2502.13512","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.13512","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"arxiv_version","alias_value":"2502.13512v1","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.13512","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"pith_short_12","alias_value":"2S2PXCJZ7A7I","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"pith_short_16","alias_value":"2S2PXCJZ7A7ITCYR","created_at":"2026-07-05T10:16:48Z"},{"alias_kind":"pith_short_8","alias_value":"2S2PXCJZ","created_at":"2026-07-05T10:16:48Z"}],"graph_snapshots":[{"event_id":"sha256:80a48fe11c2801b837e9c137f7a3072c8cde7932b5d1caef1153fe83456af626","target":"graph","created_at":"2026-07-05T10:16:48Z","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/2502.13512/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cu-based electrocatalysts exhibits enormous potential for electrochemical CO2 conversion to added-value products. However, high selectivity, specially towards C2+ products, remains a critical challenge for its implementation in commercial applications. Herein, we report the preparation of a series of electrocatalysts based on octadecyl amine (ODA) coated Cu2O nanoparticles. HRTEM images show ODA coatings with thickness from 1.2 to 4 nm. DFT calculations predict that at low surface coverage, ODA tends to lay on the Cu2O surface, leaving hydrophilic regions. Oppositely, at high surface coverage,","authors_text":"Hermenegildo Garc\\'ia, Jiajun Hu, Josep Albero, Silvio Osella","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-02-19T08:06:51Z","title":"Unravelling the influence of shell thickness in organic functionalized Cu2O nanoparticles on C2+ products distribution in electrocatalytic CO2 reduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.13512","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":"sha256:3ec5cc96ee51f2ecabbb93112e325fe7a47cc12db71d0f3a880ff1dfb1edaaa2","target":"record","created_at":"2026-07-05T10:16:48Z","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":"2e06f81544ef2d8842f2f8184c0b6f96ed2497901a29c77508bbfb0b3cf2a87f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-02-19T08:06:51Z","title_canon_sha256":"941c73e4bc170f4ec328d87f0195c80ab097c5436d0751a1627d56c7780e1797"},"schema_version":"1.0","source":{"id":"2502.13512","kind":"arxiv","version":1}},"canonical_sha256":"d4b4fb8939f83e898b11d2a4d7c31e860ce5abbd29dee060ea1cc1acd737db4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4b4fb8939f83e898b11d2a4d7c31e860ce5abbd29dee060ea1cc1acd737db4f","first_computed_at":"2026-07-05T10:16:48.417723Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:16:48.417723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZCDe/cgBt8cz3bV7txZup9hro3FuJlIQs6jLsbquiA+qyeM/aUKDaMIxYIiYPmHH+lScEgWj+bOzrvzcjMqvAg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:16:48.418188Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.13512","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ec5cc96ee51f2ecabbb93112e325fe7a47cc12db71d0f3a880ff1dfb1edaaa2","sha256:80a48fe11c2801b837e9c137f7a3072c8cde7932b5d1caef1153fe83456af626"],"state_sha256":"410b1590535c888c39311dccc056abf270181aa0b4b789a9a9ba6a530a2a5400"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vv5nrknPbyRSaqzW3GHB+EnZoT/QKL0cMZqA4mD7/sXZN56Uo3VxspXh2cd473T2pgiRM1KipT6WsWK00lRdCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T13:40:05.576422Z","bundle_sha256":"d5d1c0c1795c3174f657998593b15cdd7fee3bb5b1b19c974b64818f1bcdd8c4"}}