{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:Z6A6F6EHYA6LVSGTJHIAAZUXPA","short_pith_number":"pith:Z6A6F6EH","canonical_record":{"source":{"id":"1805.03439","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-05-09T10:00:13Z","cross_cats_sorted":[],"title_canon_sha256":"4e9fc7659edd563cdb425a5ad025a847c2a7549b58b25cbda2de73f83e726969","abstract_canon_sha256":"9a0e75d7834c2df151a99fa1cba80572bc76c6b1b20a6255acbffb6bacccfcd9"},"schema_version":"1.0"},"canonical_sha256":"cf81e2f887c03cbac8d349d00066977816892f9b8b8a2d61d279fcd90dcec602","source":{"kind":"arxiv","id":"1805.03439","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03439","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03439v1","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03439","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"Z6A6F6EHYA6L","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z6A6F6EHYA6LVSGT","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z6A6F6EH","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:Z6A6F6EHYA6LVSGTJHIAAZUXPA","target":"record","payload":{"canonical_record":{"source":{"id":"1805.03439","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-05-09T10:00:13Z","cross_cats_sorted":[],"title_canon_sha256":"4e9fc7659edd563cdb425a5ad025a847c2a7549b58b25cbda2de73f83e726969","abstract_canon_sha256":"9a0e75d7834c2df151a99fa1cba80572bc76c6b1b20a6255acbffb6bacccfcd9"},"schema_version":"1.0"},"canonical_sha256":"cf81e2f887c03cbac8d349d00066977816892f9b8b8a2d61d279fcd90dcec602","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:13.407421Z","signature_b64":"/PN9kSa3Z7U0VB3zpEif5vxKhQ8shsX7LtnJhBjC1924dHoVob2h/17tay3+12tB7Ksz8O0cXIsJHBGkUa34CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf81e2f887c03cbac8d349d00066977816892f9b8b8a2d61d279fcd90dcec602","last_reissued_at":"2026-05-18T00:15:13.406856Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:13.406856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.03439","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":"2026-05-18T00:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kru8y4AMiDJAEz3vU2oFdiw4t+mk3XhyFpzV/nDKxiiHFnzp78Pnem5+R1wah/4xL96hpNygEf3f0h5fDjthDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:48:04.528396Z"},"content_sha256":"b9c34f6bc134e38e8830e9a135b92e8137ce6f7a92b27136af9ee37efb37481f","schema_version":"1.0","event_id":"sha256:b9c34f6bc134e38e8830e9a135b92e8137ce6f7a92b27136af9ee37efb37481f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:Z6A6F6EHYA6LVSGTJHIAAZUXPA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graphene-Supported Silver-Iron Carbon Nitride Derived from Thermal Decomposition of Silver Hexacyanoferrate as Effective Electrocatalyst for the Oxygen Reduction Reaction in Alkaline Media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Adam Szwed, Beata Dembinska, Enrico Negro, Kamila Brzozowska, Krzysztof Miecznikowski, Pawel J. Kulesza, Vito Di Noto","submitted_at":"2018-05-09T10:00:13Z","abstract_excerpt":"Silver-iron carbon nitride has been obtained by pyrolysis (under inert atmosphere) of silver hexacyanoferrate(II), precipitated on graphene nanoplatelets, and examined as electrocatalyst for oxygen reduction reaction in alkaline media in comparison to silver nanoparticles and iron carbon nitride (prepared separately in a similar manner on graphene nanoplatelets). The catalytic materials have been studied in 0.1 M potassium hydroxide electrolyte using such electrochemical diagnostic techniques as cyclic voltammetry and rotating ring-disk electrode voltammetry. Upon application of graphene nanop"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03439","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":"2026-05-18T00:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1xTrUvVaor5gDZujmwDhcjUFKuhPAvyUrez2WcfXXTAT4rTb1Wx7010kMRxOxP4Et/dYCzde3OFW+jmEFgf8AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:48:04.529096Z"},"content_sha256":"8b1662ee4bc3a9a260eb77b90948b3bbd238aef87eb9840d22caf73f8c323c81","schema_version":"1.0","event_id":"sha256:8b1662ee4bc3a9a260eb77b90948b3bbd238aef87eb9840d22caf73f8c323c81"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA/bundle.json","state_url":"https://pith.science/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA/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":"2026-05-28T20:48:04Z","links":{"resolver":"https://pith.science/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA","bundle":"https://pith.science/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA/bundle.json","state":"https://pith.science/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z6A6F6EHYA6LVSGTJHIAAZUXPA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:Z6A6F6EHYA6LVSGTJHIAAZUXPA","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":"9a0e75d7834c2df151a99fa1cba80572bc76c6b1b20a6255acbffb6bacccfcd9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-05-09T10:00:13Z","title_canon_sha256":"4e9fc7659edd563cdb425a5ad025a847c2a7549b58b25cbda2de73f83e726969"},"schema_version":"1.0","source":{"id":"1805.03439","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03439","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03439v1","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03439","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"Z6A6F6EHYA6L","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z6A6F6EHYA6LVSGT","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z6A6F6EH","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:8b1662ee4bc3a9a260eb77b90948b3bbd238aef87eb9840d22caf73f8c323c81","target":"graph","created_at":"2026-05-18T00:15:13Z","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":"Silver-iron carbon nitride has been obtained by pyrolysis (under inert atmosphere) of silver hexacyanoferrate(II), precipitated on graphene nanoplatelets, and examined as electrocatalyst for oxygen reduction reaction in alkaline media in comparison to silver nanoparticles and iron carbon nitride (prepared separately in a similar manner on graphene nanoplatelets). The catalytic materials have been studied in 0.1 M potassium hydroxide electrolyte using such electrochemical diagnostic techniques as cyclic voltammetry and rotating ring-disk electrode voltammetry. Upon application of graphene nanop","authors_text":"Adam Szwed, Beata Dembinska, Enrico Negro, Kamila Brzozowska, Krzysztof Miecznikowski, Pawel J. Kulesza, Vito Di Noto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-05-09T10:00:13Z","title":"Graphene-Supported Silver-Iron Carbon Nitride Derived from Thermal Decomposition of Silver Hexacyanoferrate as Effective Electrocatalyst for the Oxygen Reduction Reaction in Alkaline Media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03439","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:b9c34f6bc134e38e8830e9a135b92e8137ce6f7a92b27136af9ee37efb37481f","target":"record","created_at":"2026-05-18T00:15:13Z","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":"9a0e75d7834c2df151a99fa1cba80572bc76c6b1b20a6255acbffb6bacccfcd9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-05-09T10:00:13Z","title_canon_sha256":"4e9fc7659edd563cdb425a5ad025a847c2a7549b58b25cbda2de73f83e726969"},"schema_version":"1.0","source":{"id":"1805.03439","kind":"arxiv","version":1}},"canonical_sha256":"cf81e2f887c03cbac8d349d00066977816892f9b8b8a2d61d279fcd90dcec602","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf81e2f887c03cbac8d349d00066977816892f9b8b8a2d61d279fcd90dcec602","first_computed_at":"2026-05-18T00:15:13.406856Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:13.406856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/PN9kSa3Z7U0VB3zpEif5vxKhQ8shsX7LtnJhBjC1924dHoVob2h/17tay3+12tB7Ksz8O0cXIsJHBGkUa34CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:13.407421Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.03439","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9c34f6bc134e38e8830e9a135b92e8137ce6f7a92b27136af9ee37efb37481f","sha256:8b1662ee4bc3a9a260eb77b90948b3bbd238aef87eb9840d22caf73f8c323c81"],"state_sha256":"1b45051f026a86024131965006498c944d677aef5186f05b760988959b26a872"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hcaP9wQdGc+earijYELWBOx7EjHN2smkKvDjYwqYsHfyvdKn9AGothnmWe3hCoFq9DEL0SLcKwPEPXedFI28Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:48:04.532743Z","bundle_sha256":"4bc2d2f0818d70f0a022399e3afd4d944087769b193f70eb8922daf85e37b329"}}