{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IZHSV63BDI2P4WOBKBOGDPLRTU","short_pith_number":"pith:IZHSV63B","canonical_record":{"source":{"id":"1905.01466","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-04T09:55:18Z","cross_cats_sorted":[],"title_canon_sha256":"3a4fc1471fb7add96dd85b5a9d756c5323ebef8e4efcd379f1632dca438e46d3","abstract_canon_sha256":"8b4f243aec389336306610244a1846f5ae3e464105f61afe937e6380cbeb9664"},"schema_version":"1.0"},"canonical_sha256":"464f2afb611a34fe59c1505c61bd719d149bae88ec66b972ac1814964dd58e0b","source":{"kind":"arxiv","id":"1905.01466","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01466","created_at":"2026-05-17T23:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01466v1","created_at":"2026-05-17T23:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01466","created_at":"2026-05-17T23:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"IZHSV63BDI2P","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"IZHSV63BDI2P4WOB","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"IZHSV63B","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IZHSV63BDI2P4WOBKBOGDPLRTU","target":"record","payload":{"canonical_record":{"source":{"id":"1905.01466","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-04T09:55:18Z","cross_cats_sorted":[],"title_canon_sha256":"3a4fc1471fb7add96dd85b5a9d756c5323ebef8e4efcd379f1632dca438e46d3","abstract_canon_sha256":"8b4f243aec389336306610244a1846f5ae3e464105f61afe937e6380cbeb9664"},"schema_version":"1.0"},"canonical_sha256":"464f2afb611a34fe59c1505c61bd719d149bae88ec66b972ac1814964dd58e0b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:58.482242Z","signature_b64":"gv+OTPKvKnTpFhb99M/Fj0fGoLDc8JAWRbB8Y7uk7iwcTeAiONuYI0DhjHefM3vP7K0O8L5jxYE8Bf/jR1q1Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"464f2afb611a34fe59c1505c61bd719d149bae88ec66b972ac1814964dd58e0b","last_reissued_at":"2026-05-17T23:46:58.481638Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:58.481638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.01466","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":"2026-05-17T23:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"26FTV0jLpTeC/Z9MYNnpxAZJNDrcWFlMliUrqPK+f2yWfbJKXNiIKc4q7YiOZ14yx37oxUYvMomRbBoSEIJTDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:48:45.608659Z"},"content_sha256":"ba7e540b350944e57b28076bcab2c163a3bd7acc174a6ea7d72de02c03072b74","schema_version":"1.0","event_id":"sha256:ba7e540b350944e57b28076bcab2c163a3bd7acc174a6ea7d72de02c03072b74"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IZHSV63BDI2P4WOBKBOGDPLRTU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Electrocatalytic Reduction of CO2 by Nitrogen-Doped Nanoporous Carbon-Carbon Nanotube Membranes - A Step Towards the Electrochemical CO2 Refinery","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Chenxi Qian, Chun Ma, Debao Li, Geoffrey A. Ozin, Hong Wang, Jia Jia, Jiayin Yuan, Lu Wang, Markus Antonietti, Pengfei Song, Qiang Wang, Shixiong Min, Tom Wu, Young Feng Li","submitted_at":"2019-05-04T09:55:18Z","abstract_excerpt":"The search for earth abundant, efficient and stable electrocatalysts that can enable the chemical reduction of CO2 to value-added chemicals and fuels at an industrially relevant scale, is a high priority for the development of a global network of renewable energy conversion and storage systems that can meaningfully impact greenhouse gas induced climate change. Here we introduce a straightforward, low cost, scalable and technologically relevant method to manufacture an all-carbon, electroactive, nitrogen-doped nanoporous carbon-carbon nanotube composite membrane, dubbed \"HNCM-CNT\". The membrane"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01466","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":"2026-05-17T23:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QdeDULRdkflQpOqS9f4t0z+BpPLBs7Pwsjg8a/hEzDIYj0L5dMc3nYwaEWFgPUfmEnb2/KjFTtK4yn4kR3gSCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:48:45.609089Z"},"content_sha256":"238b8f4d05a49369f2ead112551e98f9a148bf4eea66de5d345ea4a27b7b9a26","schema_version":"1.0","event_id":"sha256:238b8f4d05a49369f2ead112551e98f9a148bf4eea66de5d345ea4a27b7b9a26"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IZHSV63BDI2P4WOBKBOGDPLRTU/bundle.json","state_url":"https://pith.science/pith/IZHSV63BDI2P4WOBKBOGDPLRTU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IZHSV63BDI2P4WOBKBOGDPLRTU/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":"2026-05-25T16:48:45Z","links":{"resolver":"https://pith.science/pith/IZHSV63BDI2P4WOBKBOGDPLRTU","bundle":"https://pith.science/pith/IZHSV63BDI2P4WOBKBOGDPLRTU/bundle.json","state":"https://pith.science/pith/IZHSV63BDI2P4WOBKBOGDPLRTU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IZHSV63BDI2P4WOBKBOGDPLRTU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IZHSV63BDI2P4WOBKBOGDPLRTU","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":"8b4f243aec389336306610244a1846f5ae3e464105f61afe937e6380cbeb9664","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-04T09:55:18Z","title_canon_sha256":"3a4fc1471fb7add96dd85b5a9d756c5323ebef8e4efcd379f1632dca438e46d3"},"schema_version":"1.0","source":{"id":"1905.01466","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01466","created_at":"2026-05-17T23:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01466v1","created_at":"2026-05-17T23:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01466","created_at":"2026-05-17T23:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"IZHSV63BDI2P","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"IZHSV63BDI2P4WOB","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"IZHSV63B","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:238b8f4d05a49369f2ead112551e98f9a148bf4eea66de5d345ea4a27b7b9a26","target":"graph","created_at":"2026-05-17T23:46:58Z","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":"The search for earth abundant, efficient and stable electrocatalysts that can enable the chemical reduction of CO2 to value-added chemicals and fuels at an industrially relevant scale, is a high priority for the development of a global network of renewable energy conversion and storage systems that can meaningfully impact greenhouse gas induced climate change. Here we introduce a straightforward, low cost, scalable and technologically relevant method to manufacture an all-carbon, electroactive, nitrogen-doped nanoporous carbon-carbon nanotube composite membrane, dubbed \"HNCM-CNT\". The membrane","authors_text":"Chenxi Qian, Chun Ma, Debao Li, Geoffrey A. Ozin, Hong Wang, Jia Jia, Jiayin Yuan, Lu Wang, Markus Antonietti, Pengfei Song, Qiang Wang, Shixiong Min, Tom Wu, Young Feng Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-04T09:55:18Z","title":"Efficient Electrocatalytic Reduction of CO2 by Nitrogen-Doped Nanoporous Carbon-Carbon Nanotube Membranes - A Step Towards the Electrochemical CO2 Refinery"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01466","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:ba7e540b350944e57b28076bcab2c163a3bd7acc174a6ea7d72de02c03072b74","target":"record","created_at":"2026-05-17T23:46:58Z","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":"8b4f243aec389336306610244a1846f5ae3e464105f61afe937e6380cbeb9664","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-04T09:55:18Z","title_canon_sha256":"3a4fc1471fb7add96dd85b5a9d756c5323ebef8e4efcd379f1632dca438e46d3"},"schema_version":"1.0","source":{"id":"1905.01466","kind":"arxiv","version":1}},"canonical_sha256":"464f2afb611a34fe59c1505c61bd719d149bae88ec66b972ac1814964dd58e0b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"464f2afb611a34fe59c1505c61bd719d149bae88ec66b972ac1814964dd58e0b","first_computed_at":"2026-05-17T23:46:58.481638Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:58.481638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gv+OTPKvKnTpFhb99M/Fj0fGoLDc8JAWRbB8Y7uk7iwcTeAiONuYI0DhjHefM3vP7K0O8L5jxYE8Bf/jR1q1Bw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:58.482242Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.01466","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba7e540b350944e57b28076bcab2c163a3bd7acc174a6ea7d72de02c03072b74","sha256:238b8f4d05a49369f2ead112551e98f9a148bf4eea66de5d345ea4a27b7b9a26"],"state_sha256":"a1fc4a2630e2615437482ae3fc6afb6cfe4a499f90076a017eca3bc647bd5da2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OAeVJ/bbQ92502Ra6Ta621vvULo7rngmLezEvV60NkmHWYS70vH+3Wx2ZNHExbM0MWRrvBWWsfONseiNUjDhBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:48:45.612555Z","bundle_sha256":"8331e79489c5b4c603f1a740855e6f506f36939c8f6006306740e4cfa7221e62"}}