{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EEEQQ7W4SN4M5VPKONTJJLIIOO","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":"c19ee24d35e087f010b16589aaf380df628742409d78a54323c9df4fcf103f56","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-19T23:08:21Z","title_canon_sha256":"086b94e9ccea05e9c8f9fadc4622132a614bc9d2dc52223f2c4ba69e02c0fe06"},"schema_version":"1.0","source":{"id":"1608.05755","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05755","created_at":"2026-05-18T00:31:22Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05755v1","created_at":"2026-05-18T00:31:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05755","created_at":"2026-05-18T00:31:22Z"},{"alias_kind":"pith_short_12","alias_value":"EEEQQ7W4SN4M","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"EEEQQ7W4SN4M5VPK","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"EEEQQ7W4","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:4afdfd89c6173f0ac35e1df2c26600d54a49bfbf20b9b85c623c2bba421a41fb","target":"graph","created_at":"2026-05-18T00:31:22Z","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":"Hydrogen is a promising energy carrier and key agent for many industrial chemical processes1. One method for generating hydrogen sustainably is via the hydrogen evolution reaction (HER), in which electrochemical reduction of protons is mediated by an appropriate catalyst-traditionally, an expensive platinum-group metal. Scalable production requires catalyst alternatives that can lower materials or processing costs while retaining the highest possible activity. Strategies have included dilute alloying of Pt2 or employing less expensive transition metal alloys, compounds or heterostructures (e.g","authors_text":"Boris I. Yakobson, Brandon C. Wood, Jing Gu, Jingjie Wu, Jing Zhang, Jun Lou, Ken P. Hackenberg, Kunttal Keyshar, Pulickel M. Ajayan, Robert Vajtai, Tadashi Ogitsu, Yingchao Yang, Y. Morris Wang, Yuanyue Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-19T23:08:21Z","title":"Self-optimizing layered hydrogen evolution catalyst with high basal-plane activity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05755","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":"sha256:414f0c0130785e02efd28aea4c2d06331a187406f6ef08d9915975a80a64f1ce","target":"record","created_at":"2026-05-18T00:31:22Z","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":"c19ee24d35e087f010b16589aaf380df628742409d78a54323c9df4fcf103f56","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-19T23:08:21Z","title_canon_sha256":"086b94e9ccea05e9c8f9fadc4622132a614bc9d2dc52223f2c4ba69e02c0fe06"},"schema_version":"1.0","source":{"id":"1608.05755","kind":"arxiv","version":1}},"canonical_sha256":"2109087edc9378ced5ea736694ad0873aa9741af47766a8df2d5d0f3c81bf985","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2109087edc9378ced5ea736694ad0873aa9741af47766a8df2d5d0f3c81bf985","first_computed_at":"2026-05-18T00:31:22.496708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:22.496708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6OIfhnMLnROVMJxhpb7DzSEAjGqP8vdE7ssEsPxiChATcTmrOLYmJUOEWoxMc76WR0uA19BtjEdQJqn+3kiMDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:22.497248Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.05755","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:414f0c0130785e02efd28aea4c2d06331a187406f6ef08d9915975a80a64f1ce","sha256:4afdfd89c6173f0ac35e1df2c26600d54a49bfbf20b9b85c623c2bba421a41fb"],"state_sha256":"01b614b42d681908c4fbbf4c2c8616bd35bf27a5a53a20fc44ed2ba062d7e8e6"}