{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YL2M7YUV7TXDFVERCLRDXDB7MI","short_pith_number":"pith:YL2M7YUV","canonical_record":{"source":{"id":"1707.03031","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-07-10T19:30:13Z","cross_cats_sorted":[],"title_canon_sha256":"2bd0670335ccb972afcd4b121edcab3e90e63b067c2222ddc1b51f7870d0450e","abstract_canon_sha256":"c8082069623a920146a64f5146f9688159b7ff9858a451dacc1f6c77b5783b9e"},"schema_version":"1.0"},"canonical_sha256":"c2f4cfe295fcee32d49112e23b8c3f6239cdb7cde4fc7d779dee45e9d8298ed9","source":{"kind":"arxiv","id":"1707.03031","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03031","created_at":"2026-05-18T00:24:42Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03031v3","created_at":"2026-05-18T00:24:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03031","created_at":"2026-05-18T00:24:42Z"},{"alias_kind":"pith_short_12","alias_value":"YL2M7YUV7TXD","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YL2M7YUV7TXDFVER","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YL2M7YUV","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YL2M7YUV7TXDFVERCLRDXDB7MI","target":"record","payload":{"canonical_record":{"source":{"id":"1707.03031","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-07-10T19:30:13Z","cross_cats_sorted":[],"title_canon_sha256":"2bd0670335ccb972afcd4b121edcab3e90e63b067c2222ddc1b51f7870d0450e","abstract_canon_sha256":"c8082069623a920146a64f5146f9688159b7ff9858a451dacc1f6c77b5783b9e"},"schema_version":"1.0"},"canonical_sha256":"c2f4cfe295fcee32d49112e23b8c3f6239cdb7cde4fc7d779dee45e9d8298ed9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:42.656166Z","signature_b64":"n3FHDZcddogoTofgWjuVBBWhcc6It/2R6uVd+xq59WRpWWaaYRRdBqxCt4MmVfzwJcVC9816d9qMlTJlznMtAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c2f4cfe295fcee32d49112e23b8c3f6239cdb7cde4fc7d779dee45e9d8298ed9","last_reissued_at":"2026-05-18T00:24:42.655687Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:42.655687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.03031","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MMGASKHxeQZjHyvY72QMjCqmDxnJYu3Qjh8B3uxRL1Fxl0wQpLQjHjF3CFcGmVz17BQL116qrA6+3lR/bgyqAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T16:55:01.263305Z"},"content_sha256":"1674f1501b5a410895eacb7d3fe6908510677d622d22e1cf2a5b94d9f458b404","schema_version":"1.0","event_id":"sha256:1674f1501b5a410895eacb7d3fe6908510677d622d22e1cf2a5b94d9f458b404"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YL2M7YUV7TXDFVERCLRDXDB7MI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analysis of Photocatalytic Nitrogen Fixation on Rutile TiO$_2$(110)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Andrew J. Medford, Benjamin M. Comer","submitted_at":"2017-07-10T19:30:13Z","abstract_excerpt":"Photocatalytic nitrogen fixation provides a promising route to produce reactive nitrogen compounds at benign conditions. Titania has been reported as an active photocatalyst for reduction of dinitrogen to ammonia; however there is little fundamental understanding of how this process occurs. In this work the rutile (110) model surface is hypothesized to be the active site, and a computational model based on the Bayesian error estimation functional (BEEF-vdW) and computational hydrogen electrode is applied in order to analyze the expected dinitrogen coverage at the surface as well as the overpot"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03031","kind":"arxiv","version":3},"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":"2026-05-18T00:24:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v51u1G+KXxxHdCAlXINeLmnHIFt6krMHT2fsAeJ3wEzMSQbxg2hjQlWNzfY+iyHdZCQp3VH6RzrHBPoESGfgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T16:55:01.264032Z"},"content_sha256":"e68f6e97da8e2ccef2da732c97580371c4551fa4fd8897411276cfe8a2424a86","schema_version":"1.0","event_id":"sha256:e68f6e97da8e2ccef2da732c97580371c4551fa4fd8897411276cfe8a2424a86"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YL2M7YUV7TXDFVERCLRDXDB7MI/bundle.json","state_url":"https://pith.science/pith/YL2M7YUV7TXDFVERCLRDXDB7MI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YL2M7YUV7TXDFVERCLRDXDB7MI/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":"2026-06-10T16:55:01Z","links":{"resolver":"https://pith.science/pith/YL2M7YUV7TXDFVERCLRDXDB7MI","bundle":"https://pith.science/pith/YL2M7YUV7TXDFVERCLRDXDB7MI/bundle.json","state":"https://pith.science/pith/YL2M7YUV7TXDFVERCLRDXDB7MI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YL2M7YUV7TXDFVERCLRDXDB7MI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YL2M7YUV7TXDFVERCLRDXDB7MI","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":"c8082069623a920146a64f5146f9688159b7ff9858a451dacc1f6c77b5783b9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-07-10T19:30:13Z","title_canon_sha256":"2bd0670335ccb972afcd4b121edcab3e90e63b067c2222ddc1b51f7870d0450e"},"schema_version":"1.0","source":{"id":"1707.03031","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03031","created_at":"2026-05-18T00:24:42Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03031v3","created_at":"2026-05-18T00:24:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03031","created_at":"2026-05-18T00:24:42Z"},{"alias_kind":"pith_short_12","alias_value":"YL2M7YUV7TXD","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YL2M7YUV7TXDFVER","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YL2M7YUV","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:e68f6e97da8e2ccef2da732c97580371c4551fa4fd8897411276cfe8a2424a86","target":"graph","created_at":"2026-05-18T00:24:42Z","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":"Photocatalytic nitrogen fixation provides a promising route to produce reactive nitrogen compounds at benign conditions. Titania has been reported as an active photocatalyst for reduction of dinitrogen to ammonia; however there is little fundamental understanding of how this process occurs. In this work the rutile (110) model surface is hypothesized to be the active site, and a computational model based on the Bayesian error estimation functional (BEEF-vdW) and computational hydrogen electrode is applied in order to analyze the expected dinitrogen coverage at the surface as well as the overpot","authors_text":"Andrew J. Medford, Benjamin M. Comer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-07-10T19:30:13Z","title":"Analysis of Photocatalytic Nitrogen Fixation on Rutile TiO$_2$(110)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03031","kind":"arxiv","version":3},"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":"sha256:1674f1501b5a410895eacb7d3fe6908510677d622d22e1cf2a5b94d9f458b404","target":"record","created_at":"2026-05-18T00:24:42Z","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":"c8082069623a920146a64f5146f9688159b7ff9858a451dacc1f6c77b5783b9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-07-10T19:30:13Z","title_canon_sha256":"2bd0670335ccb972afcd4b121edcab3e90e63b067c2222ddc1b51f7870d0450e"},"schema_version":"1.0","source":{"id":"1707.03031","kind":"arxiv","version":3}},"canonical_sha256":"c2f4cfe295fcee32d49112e23b8c3f6239cdb7cde4fc7d779dee45e9d8298ed9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c2f4cfe295fcee32d49112e23b8c3f6239cdb7cde4fc7d779dee45e9d8298ed9","first_computed_at":"2026-05-18T00:24:42.655687Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:42.655687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n3FHDZcddogoTofgWjuVBBWhcc6It/2R6uVd+xq59WRpWWaaYRRdBqxCt4MmVfzwJcVC9816d9qMlTJlznMtAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:42.656166Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.03031","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1674f1501b5a410895eacb7d3fe6908510677d622d22e1cf2a5b94d9f458b404","sha256:e68f6e97da8e2ccef2da732c97580371c4551fa4fd8897411276cfe8a2424a86"],"state_sha256":"5ef37ca5aca884148958b9d51b62ff7c28fc21193e300b1a9dd06fc6aa3b2a52"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F3bIRtwvRB3BWPqz8EWcEOnr2QkSEL/hHsn285onsIaegJXgilJZhDZrlYy6PSavqKXV8fsNYZ1hqXqami5DBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T16:55:01.268076Z","bundle_sha256":"c4a2e73707f418249cafce03f03f434671e12921b82a96d5631a548a99bbb071"}}