{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:MR4EKCE3SOC2AI5ORMEYW4MUSI","short_pith_number":"pith:MR4EKCE3","canonical_record":{"source":{"id":"2508.07055","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-08-09T17:44:02Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"455c88cd88abd42e7198d6920d26323318d689a1b314c9a3166ce15b7c90f5ad","abstract_canon_sha256":"76f0cf490189c537a8884326ed7e6fc73ade19e474f532d48ed350c87e5945f5"},"schema_version":"1.0"},"canonical_sha256":"647845089b9385a023ae8b098b719492189bd7bac97b794c2ce877a3b595a586","source":{"kind":"arxiv","id":"2508.07055","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.07055","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"arxiv_version","alias_value":"2508.07055v2","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.07055","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"pith_short_12","alias_value":"MR4EKCE3SOC2","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"pith_short_16","alias_value":"MR4EKCE3SOC2AI5O","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"pith_short_8","alias_value":"MR4EKCE3","created_at":"2026-07-05T11:57:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:MR4EKCE3SOC2AI5ORMEYW4MUSI","target":"record","payload":{"canonical_record":{"source":{"id":"2508.07055","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-08-09T17:44:02Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"455c88cd88abd42e7198d6920d26323318d689a1b314c9a3166ce15b7c90f5ad","abstract_canon_sha256":"76f0cf490189c537a8884326ed7e6fc73ade19e474f532d48ed350c87e5945f5"},"schema_version":"1.0"},"canonical_sha256":"647845089b9385a023ae8b098b719492189bd7bac97b794c2ce877a3b595a586","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:57:20.846338Z","signature_b64":"cL9kJu9ramG/DWUyXJnRpXyVTW/M7D3zPqq7TdSqDRW9Aetm4cDYZITVxmUVlFLRko75/r1afUMN9RWuxAujCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"647845089b9385a023ae8b098b719492189bd7bac97b794c2ce877a3b595a586","last_reissued_at":"2026-07-05T11:57:20.845641Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:57:20.845641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.07055","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:57:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f1lgdrbkRG/QvXrZH8RrX/3/4g/SYfNLrAqNNS+J/bdb5irlJrDR4+jf5TM7q18lnE2DC+pxLLWy+JzwTRZbBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T20:19:56.183167Z"},"content_sha256":"4effae1f98fdfcc24703266f26e1a6f8a985686a249c508fdcb3929d762b0945","schema_version":"1.0","event_id":"sha256:4effae1f98fdfcc24703266f26e1a6f8a985686a249c508fdcb3929d762b0945"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:MR4EKCE3SOC2AI5ORMEYW4MUSI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interplay of distinct modes of charge regulation on poly-acid ionization and conformation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Arindam Kundagrami, Aritra Chowdhury, Benjamin Schuler, Dylan T. Tomares, Rohit V. Pappu, Souradeep Ghosh","submitted_at":"2025-08-09T17:44:02Z","abstract_excerpt":"We adapt the Edwards-Muthukumar theoretical framework for a single polymer chain to investigate the interplay between proton binding and counterion condensation for poly-acids. We find that changes to pH enable non-monotonic transitions between anti- and conventional polyelectrolyte behaviors. In the former, the net charge and the overall dimensions increase with increasing salt concentration, while the converse is true for conventional polyelectrolytes. The polymeric nature and local solvent polarization drive significant pKa shifts when compared to the values of reference monoacids. These pK"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.07055","kind":"arxiv","version":2},"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/2508.07055/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":"2026-07-05T11:57:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ao3YPPjJ9jqedb5mG8/kM3wxxRqMkiYDXGI3hyt1yfOAM4RAFTJWpgwtOQO3KYuHzzqv98Adwn68D/1QIx9/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T20:19:56.183550Z"},"content_sha256":"2b01a8cab3c038d950e6e7257aa24533ff4887699ec4eb4293c793d81479164a","schema_version":"1.0","event_id":"sha256:2b01a8cab3c038d950e6e7257aa24533ff4887699ec4eb4293c793d81479164a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI/bundle.json","state_url":"https://pith.science/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI/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":"2026-07-10T20:19:56Z","links":{"resolver":"https://pith.science/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI","bundle":"https://pith.science/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI/bundle.json","state":"https://pith.science/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MR4EKCE3SOC2AI5ORMEYW4MUSI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MR4EKCE3SOC2AI5ORMEYW4MUSI","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":"76f0cf490189c537a8884326ed7e6fc73ade19e474f532d48ed350c87e5945f5","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-08-09T17:44:02Z","title_canon_sha256":"455c88cd88abd42e7198d6920d26323318d689a1b314c9a3166ce15b7c90f5ad"},"schema_version":"1.0","source":{"id":"2508.07055","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.07055","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"arxiv_version","alias_value":"2508.07055v2","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.07055","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"pith_short_12","alias_value":"MR4EKCE3SOC2","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"pith_short_16","alias_value":"MR4EKCE3SOC2AI5O","created_at":"2026-07-05T11:57:20Z"},{"alias_kind":"pith_short_8","alias_value":"MR4EKCE3","created_at":"2026-07-05T11:57:20Z"}],"graph_snapshots":[{"event_id":"sha256:2b01a8cab3c038d950e6e7257aa24533ff4887699ec4eb4293c793d81479164a","target":"graph","created_at":"2026-07-05T11:57:20Z","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/2508.07055/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We adapt the Edwards-Muthukumar theoretical framework for a single polymer chain to investigate the interplay between proton binding and counterion condensation for poly-acids. We find that changes to pH enable non-monotonic transitions between anti- and conventional polyelectrolyte behaviors. In the former, the net charge and the overall dimensions increase with increasing salt concentration, while the converse is true for conventional polyelectrolytes. The polymeric nature and local solvent polarization drive significant pKa shifts when compared to the values of reference monoacids. These pK","authors_text":"Arindam Kundagrami, Aritra Chowdhury, Benjamin Schuler, Dylan T. Tomares, Rohit V. Pappu, Souradeep Ghosh","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-08-09T17:44:02Z","title":"Interplay of distinct modes of charge regulation on poly-acid ionization and conformation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.07055","kind":"arxiv","version":2},"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":"sha256:4effae1f98fdfcc24703266f26e1a6f8a985686a249c508fdcb3929d762b0945","target":"record","created_at":"2026-07-05T11:57:20Z","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":"76f0cf490189c537a8884326ed7e6fc73ade19e474f532d48ed350c87e5945f5","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-08-09T17:44:02Z","title_canon_sha256":"455c88cd88abd42e7198d6920d26323318d689a1b314c9a3166ce15b7c90f5ad"},"schema_version":"1.0","source":{"id":"2508.07055","kind":"arxiv","version":2}},"canonical_sha256":"647845089b9385a023ae8b098b719492189bd7bac97b794c2ce877a3b595a586","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"647845089b9385a023ae8b098b719492189bd7bac97b794c2ce877a3b595a586","first_computed_at":"2026-07-05T11:57:20.845641Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:57:20.845641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cL9kJu9ramG/DWUyXJnRpXyVTW/M7D3zPqq7TdSqDRW9Aetm4cDYZITVxmUVlFLRko75/r1afUMN9RWuxAujCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:57:20.846338Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.07055","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4effae1f98fdfcc24703266f26e1a6f8a985686a249c508fdcb3929d762b0945","sha256:2b01a8cab3c038d950e6e7257aa24533ff4887699ec4eb4293c793d81479164a"],"state_sha256":"99d132b35468094c8696b82bad051b350d34b8a6c12baf9a5f0a1b20082a21e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c5IHmb8iEikrEqqBA+Xzj0UScxs/7v2iZFwxpJKjgIvAp6dM/ZFkqdM8cPtfY715z11HFNU35KecqoYY0dQOAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T20:19:56.185648Z","bundle_sha256":"8899d9ceb501c7c8ce3a239d974f3b3611540b2d8c026a3db05373c79614403d"}}