{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:CNG7R3D3E73TI6BB45Y3UKCOMO","short_pith_number":"pith:CNG7R3D3","canonical_record":{"source":{"id":"2508.15401","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-08-21T09:43:26Z","cross_cats_sorted":[],"title_canon_sha256":"2e6de572ca988d34e2248aec739042bc00f06bc0bf476db5005ecdf3b967743b","abstract_canon_sha256":"500cfc41e3e0e92e2010ff5686448aa4f4a80c42551e7c1760da3cb046b04001"},"schema_version":"1.0"},"canonical_sha256":"134df8ec7b27f7347821e771ba284e639de3acc0e58106008086daeef0b765d9","source":{"kind":"arxiv","id":"2508.15401","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15401","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15401v1","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15401","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"pith_short_12","alias_value":"CNG7R3D3E73T","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"pith_short_16","alias_value":"CNG7R3D3E73TI6BB","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"pith_short_8","alias_value":"CNG7R3D3","created_at":"2026-07-05T11:57:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:CNG7R3D3E73TI6BB45Y3UKCOMO","target":"record","payload":{"canonical_record":{"source":{"id":"2508.15401","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-08-21T09:43:26Z","cross_cats_sorted":[],"title_canon_sha256":"2e6de572ca988d34e2248aec739042bc00f06bc0bf476db5005ecdf3b967743b","abstract_canon_sha256":"500cfc41e3e0e92e2010ff5686448aa4f4a80c42551e7c1760da3cb046b04001"},"schema_version":"1.0"},"canonical_sha256":"134df8ec7b27f7347821e771ba284e639de3acc0e58106008086daeef0b765d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:57:11.621591Z","signature_b64":"ul2cs9tYhvz3Pu0BONaLSbpWA59x7vFN8gbIrPgz17c6LVidD3KxIfSTj9LQva5fn4lUuK97DB4cgnDyA3c4CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"134df8ec7b27f7347821e771ba284e639de3acc0e58106008086daeef0b765d9","last_reissued_at":"2026-07-05T11:57:11.621109Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:57:11.621109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.15401","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":"2026-07-05T11:57:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6FQz9ayyOrFifUgZoqkwICvYmelmV2JJhXUno7Va+tqpuh0/5tJMzycTkl0/cB62BFQRDpR8sCI5SjathD33Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:44:11.687449Z"},"content_sha256":"831475a296f5e308d7e3221d2a1b38c8b14ccf6622f306e7e7a811417b97df2e","schema_version":"1.0","event_id":"sha256:831475a296f5e308d7e3221d2a1b38c8b14ccf6622f306e7e7a811417b97df2e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:CNG7R3D3E73TI6BB45Y3UKCOMO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Clay Edges Are Dynamic Proton-conducting Networks Modulated by Structure and pH","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Christoph Schran, Hongwei Fang, Xavier R. Advincula, Yixuan Feng","submitted_at":"2025-08-21T09:43:26Z","abstract_excerpt":"Montmorillonite, a ubiquitous clay mineral, plays a vital role in geochemical and environmental processes due to its chemically complex edge surfaces. However, the molecular-scale acid-base reactivity of these interfaces remains poorly understood due to the limitations of both experimental resolution and conventional simulations. Here, we employ machine learning potentials with first-principles accuracy to perform nanosecond-scale molecular dynamics simulations of montmorillonite nanoparticles across a range of pH. Our results reveal clear amphoteric behavior: edge sites undergo protonation in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15401","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.15401/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":"2026-07-05T11:57:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BdnpaAXS1Fi5ENi7Xh1TLHVQLYkYlRkKxgqmEZq79upWtFcyqWQZETthOKmzEBjFDVkYLV0sGcZbQzcnA8plDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:44:11.690362Z"},"content_sha256":"6917dcae314ce88f21993cb71fd2df12ad27a793fd2aa1f76e645cb8e17fd05b","schema_version":"1.0","event_id":"sha256:6917dcae314ce88f21993cb71fd2df12ad27a793fd2aa1f76e645cb8e17fd05b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CNG7R3D3E73TI6BB45Y3UKCOMO/bundle.json","state_url":"https://pith.science/pith/CNG7R3D3E73TI6BB45Y3UKCOMO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CNG7R3D3E73TI6BB45Y3UKCOMO/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":"2026-08-07T22:44:11Z","links":{"resolver":"https://pith.science/pith/CNG7R3D3E73TI6BB45Y3UKCOMO","bundle":"https://pith.science/pith/CNG7R3D3E73TI6BB45Y3UKCOMO/bundle.json","state":"https://pith.science/pith/CNG7R3D3E73TI6BB45Y3UKCOMO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CNG7R3D3E73TI6BB45Y3UKCOMO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:CNG7R3D3E73TI6BB45Y3UKCOMO","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":"500cfc41e3e0e92e2010ff5686448aa4f4a80c42551e7c1760da3cb046b04001","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-08-21T09:43:26Z","title_canon_sha256":"2e6de572ca988d34e2248aec739042bc00f06bc0bf476db5005ecdf3b967743b"},"schema_version":"1.0","source":{"id":"2508.15401","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15401","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15401v1","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15401","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"pith_short_12","alias_value":"CNG7R3D3E73T","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"pith_short_16","alias_value":"CNG7R3D3E73TI6BB","created_at":"2026-07-05T11:57:11Z"},{"alias_kind":"pith_short_8","alias_value":"CNG7R3D3","created_at":"2026-07-05T11:57:11Z"}],"graph_snapshots":[{"event_id":"sha256:6917dcae314ce88f21993cb71fd2df12ad27a793fd2aa1f76e645cb8e17fd05b","target":"graph","created_at":"2026-07-05T11:57:11Z","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/2508.15401/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Montmorillonite, a ubiquitous clay mineral, plays a vital role in geochemical and environmental processes due to its chemically complex edge surfaces. However, the molecular-scale acid-base reactivity of these interfaces remains poorly understood due to the limitations of both experimental resolution and conventional simulations. Here, we employ machine learning potentials with first-principles accuracy to perform nanosecond-scale molecular dynamics simulations of montmorillonite nanoparticles across a range of pH. Our results reveal clear amphoteric behavior: edge sites undergo protonation in","authors_text":"Christoph Schran, Hongwei Fang, Xavier R. Advincula, Yixuan Feng","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-08-21T09:43:26Z","title":"Clay Edges Are Dynamic Proton-conducting Networks Modulated by Structure and pH"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15401","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":"sha256:831475a296f5e308d7e3221d2a1b38c8b14ccf6622f306e7e7a811417b97df2e","target":"record","created_at":"2026-07-05T11:57:11Z","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":"500cfc41e3e0e92e2010ff5686448aa4f4a80c42551e7c1760da3cb046b04001","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-08-21T09:43:26Z","title_canon_sha256":"2e6de572ca988d34e2248aec739042bc00f06bc0bf476db5005ecdf3b967743b"},"schema_version":"1.0","source":{"id":"2508.15401","kind":"arxiv","version":1}},"canonical_sha256":"134df8ec7b27f7347821e771ba284e639de3acc0e58106008086daeef0b765d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"134df8ec7b27f7347821e771ba284e639de3acc0e58106008086daeef0b765d9","first_computed_at":"2026-07-05T11:57:11.621109Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:57:11.621109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ul2cs9tYhvz3Pu0BONaLSbpWA59x7vFN8gbIrPgz17c6LVidD3KxIfSTj9LQva5fn4lUuK97DB4cgnDyA3c4CA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:57:11.621591Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.15401","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:831475a296f5e308d7e3221d2a1b38c8b14ccf6622f306e7e7a811417b97df2e","sha256:6917dcae314ce88f21993cb71fd2df12ad27a793fd2aa1f76e645cb8e17fd05b"],"state_sha256":"bf98c6a3041923969032b92e49272cc36928e30e8a20d6ee57aa8af4406d7efb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v71cOoC4m4aXn+33J8WCP8uAGG9iUL9xu2iq3sDurUtB1dXaaogBLOuTGv+E7dimyGPrrLYbENfIDTMHjCtYAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T22:44:11.697922Z","bundle_sha256":"276df9cdbb90242ea881183cba9320bfa98d9e3cec8b550db62d15de037e5086"}}