{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:CG2SOEE3TBTM56FVHWVULX4VGK","short_pith_number":"pith:CG2SOEE3","canonical_record":{"source":{"id":"2511.05879","kind":"arxiv","version":5},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.LG","submitted_at":"2025-11-08T06:41:39Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"4534a1ccfa3e269b6e2eb490c2f0f5dd44b0c5cd537feebb8f753d157f33f479","abstract_canon_sha256":"31947864a9a63084b65231d433164ad4612dbcefc0bf8210f67ad2aaee9fb09d"},"schema_version":"1.0"},"canonical_sha256":"11b527109b9866cef8b53dab45df95328b811b30eeb9ff26f378332eea924640","source":{"kind":"arxiv","id":"2511.05879","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.05879","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"arxiv_version","alias_value":"2511.05879v5","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.05879","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"pith_short_12","alias_value":"CG2SOEE3TBTM","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"pith_short_16","alias_value":"CG2SOEE3TBTM56FV","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"pith_short_8","alias_value":"CG2SOEE3","created_at":"2026-06-30T02:17:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:CG2SOEE3TBTM56FVHWVULX4VGK","target":"record","payload":{"canonical_record":{"source":{"id":"2511.05879","kind":"arxiv","version":5},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.LG","submitted_at":"2025-11-08T06:41:39Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"4534a1ccfa3e269b6e2eb490c2f0f5dd44b0c5cd537feebb8f753d157f33f479","abstract_canon_sha256":"31947864a9a63084b65231d433164ad4612dbcefc0bf8210f67ad2aaee9fb09d"},"schema_version":"1.0"},"canonical_sha256":"11b527109b9866cef8b53dab45df95328b811b30eeb9ff26f378332eea924640","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T02:17:11.345906Z","signature_b64":"wlaFpiFcjUhV4H1qDFOyU86Yp22PfX2MCBZWw3wODyyvZmxEkXvvU6lCwlDAisIoVRY4pKeMfFPZm69Qg0FjAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11b527109b9866cef8b53dab45df95328b811b30eeb9ff26f378332eea924640","last_reissued_at":"2026-06-30T02:17:11.345300Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T02:17:11.345300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2511.05879","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-30T02:17:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I9XbNxIxP+gcR0+Jdn3pynCFHxDKMXDy8q+CdceDQyfmFfvayyDwSb2jEVO7e7uVBPaCBF46qsKI4847Ka51Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:32:21.104561Z"},"content_sha256":"0fa29fcf28ab8a5d3c1791447a1fd2dee451a060d209b05df0770cf6d044a87d","schema_version":"1.0","event_id":"sha256:0fa29fcf28ab8a5d3c1791447a1fd2dee451a060d209b05df0770cf6d044a87d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:CG2SOEE3TBTM56FVHWVULX4VGK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hard-constraint physics-residual networks for hydrogen crossover prediction and high-pressure extrapolation in PEM water electrolysis","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.LG","authors_text":"Chulung Kang, Jihyeok Lee, Yong-Woon Kim, Yung-Cheol Byun","submitted_at":"2025-11-08T06:41:39Z","abstract_excerpt":"Hydrogen crossover is a critical safety and efficiency constraint in high-pressure polymer electrolyte membrane water electrolysis (PEMWE), but accurate prediction remains difficult because data are limited, transport physics are strongly coupled, and industrial operation requires reliable extrapolation beyond observed conditions. This study develops a hard-constraint physics-residual network (PR-Net) for hydrogen crossover prediction in PEMWE and compares it with a purely data-driven neural network (NN) and a soft-constraint physics-informed neural network (PINN). PR-Net embeds Henry's, Fick'"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.05879","kind":"arxiv","version":5},"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/2511.05879/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":"2026-06-30T02:17:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/pq05Q43ZHd9M8pSWvezPSWjQpudnUwoZZ5B60AUexCX6+i1ACEt+qj7AEzJbszMCFydxuAyRnAPwBsXKMOyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:32:21.105474Z"},"content_sha256":"5b108dc6314581a8edc9ad4f1b57270e086b72838e6f2d990215c65e90b1e78a","schema_version":"1.0","event_id":"sha256:5b108dc6314581a8edc9ad4f1b57270e086b72838e6f2d990215c65e90b1e78a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CG2SOEE3TBTM56FVHWVULX4VGK/bundle.json","state_url":"https://pith.science/pith/CG2SOEE3TBTM56FVHWVULX4VGK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CG2SOEE3TBTM56FVHWVULX4VGK/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":"2026-08-04T08:32:21Z","links":{"resolver":"https://pith.science/pith/CG2SOEE3TBTM56FVHWVULX4VGK","bundle":"https://pith.science/pith/CG2SOEE3TBTM56FVHWVULX4VGK/bundle.json","state":"https://pith.science/pith/CG2SOEE3TBTM56FVHWVULX4VGK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CG2SOEE3TBTM56FVHWVULX4VGK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:CG2SOEE3TBTM56FVHWVULX4VGK","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":"31947864a9a63084b65231d433164ad4612dbcefc0bf8210f67ad2aaee9fb09d","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.LG","submitted_at":"2025-11-08T06:41:39Z","title_canon_sha256":"4534a1ccfa3e269b6e2eb490c2f0f5dd44b0c5cd537feebb8f753d157f33f479"},"schema_version":"1.0","source":{"id":"2511.05879","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.05879","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"arxiv_version","alias_value":"2511.05879v5","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.05879","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"pith_short_12","alias_value":"CG2SOEE3TBTM","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"pith_short_16","alias_value":"CG2SOEE3TBTM56FV","created_at":"2026-06-30T02:17:11Z"},{"alias_kind":"pith_short_8","alias_value":"CG2SOEE3","created_at":"2026-06-30T02:17:11Z"}],"graph_snapshots":[{"event_id":"sha256:5b108dc6314581a8edc9ad4f1b57270e086b72838e6f2d990215c65e90b1e78a","target":"graph","created_at":"2026-06-30T02:17:11Z","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/2511.05879/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hydrogen crossover is a critical safety and efficiency constraint in high-pressure polymer electrolyte membrane water electrolysis (PEMWE), but accurate prediction remains difficult because data are limited, transport physics are strongly coupled, and industrial operation requires reliable extrapolation beyond observed conditions. This study develops a hard-constraint physics-residual network (PR-Net) for hydrogen crossover prediction in PEMWE and compares it with a purely data-driven neural network (NN) and a soft-constraint physics-informed neural network (PINN). PR-Net embeds Henry's, Fick'","authors_text":"Chulung Kang, Jihyeok Lee, Yong-Woon Kim, Yung-Cheol Byun","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.LG","submitted_at":"2025-11-08T06:41:39Z","title":"Hard-constraint physics-residual networks for hydrogen crossover prediction and high-pressure extrapolation in PEM water electrolysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.05879","kind":"arxiv","version":5},"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":"sha256:0fa29fcf28ab8a5d3c1791447a1fd2dee451a060d209b05df0770cf6d044a87d","target":"record","created_at":"2026-06-30T02:17:11Z","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":"31947864a9a63084b65231d433164ad4612dbcefc0bf8210f67ad2aaee9fb09d","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.LG","submitted_at":"2025-11-08T06:41:39Z","title_canon_sha256":"4534a1ccfa3e269b6e2eb490c2f0f5dd44b0c5cd537feebb8f753d157f33f479"},"schema_version":"1.0","source":{"id":"2511.05879","kind":"arxiv","version":5}},"canonical_sha256":"11b527109b9866cef8b53dab45df95328b811b30eeb9ff26f378332eea924640","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11b527109b9866cef8b53dab45df95328b811b30eeb9ff26f378332eea924640","first_computed_at":"2026-06-30T02:17:11.345300Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T02:17:11.345300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wlaFpiFcjUhV4H1qDFOyU86Yp22PfX2MCBZWw3wODyyvZmxEkXvvU6lCwlDAisIoVRY4pKeMfFPZm69Qg0FjAA==","signature_status":"signed_v1","signed_at":"2026-06-30T02:17:11.345906Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.05879","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0fa29fcf28ab8a5d3c1791447a1fd2dee451a060d209b05df0770cf6d044a87d","sha256:5b108dc6314581a8edc9ad4f1b57270e086b72838e6f2d990215c65e90b1e78a"],"state_sha256":"01b9783c377621e68031d884f5f657fdd58b153a011b5c45db8807c55f802ca2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fciT04ldc1Xar3GQmqg25G9gEZGMGlGbnglAPid62ZkKYKglNZQrI72Dj7/u8O3gGk4m7jsssHtZSnZ5LwFgBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:32:21.174745Z","bundle_sha256":"23bea1846abc9c10f92d9df00e622e44d247319a19b8c9b9847190096dddd424"}}