{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:IUTS5OCESHT5AKLCGQNUHXASKY","short_pith_number":"pith:IUTS5OCE","canonical_record":{"source":{"id":"2602.18852","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-02-21T14:32:10Z","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"title_canon_sha256":"588c78d19195c91378fd25de1b10e278868702bfcb1e516e8c412cbbfe869191","abstract_canon_sha256":"3340149317544119d4fb0fc74aa2db754771cd4411cd0e435cbcbc938b0813de"},"schema_version":"1.0"},"canonical_sha256":"45272eb84491e7d02962341b43dc12562a4d35369dac14fb71770ee4a7fc8ac9","source":{"kind":"arxiv","id":"2602.18852","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2602.18852","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"arxiv_version","alias_value":"2602.18852v2","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.18852","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"pith_short_12","alias_value":"IUTS5OCESHT5","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"pith_short_16","alias_value":"IUTS5OCESHT5AKLC","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"pith_short_8","alias_value":"IUTS5OCE","created_at":"2026-07-31T01:33:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:IUTS5OCESHT5AKLCGQNUHXASKY","target":"record","payload":{"canonical_record":{"source":{"id":"2602.18852","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-02-21T14:32:10Z","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"title_canon_sha256":"588c78d19195c91378fd25de1b10e278868702bfcb1e516e8c412cbbfe869191","abstract_canon_sha256":"3340149317544119d4fb0fc74aa2db754771cd4411cd0e435cbcbc938b0813de"},"schema_version":"1.0"},"canonical_sha256":"45272eb84491e7d02962341b43dc12562a4d35369dac14fb71770ee4a7fc8ac9","receipt":{"kind":"pith_receipt","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"45272eb84491e7d02962341b43dc12562a4d35369dac14fb71770ee4a7fc8ac9","last_reissued_at":"2026-07-31T01:33:17.034635Z","signature_status":"unsigned_v0","first_computed_at":"2026-07-31T01:33:17.034635Z"},"source_kind":"arxiv","source_id":"2602.18852","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":"2026-07-31T01:33:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JoCAlgZGwRH6X3s5PsxyVb+bo36+CBr5H70NfKaCG448rNy0way+0PlVmHGc2o7mHoj4ygceJ4wmdTuDh5a8Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T22:08:45.592400Z"},"content_sha256":"b8b18ad5e789e4be9f98ab79abd8d80049d9dafa60665be0ae63b2280eecaefd","schema_version":"1.0","event_id":"sha256:b8b18ad5e789e4be9f98ab79abd8d80049d9dafa60665be0ae63b2280eecaefd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:IUTS5OCESHT5AKLCGQNUHXASKY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Three-slab model for the dielectric permittivity of a lipid bilayer","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.stat-mech","physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Amaresh Sahu, M.M.B. Sheraj","submitted_at":"2026-02-21T14:32:10Z","abstract_excerpt":"A model for the tensorial dielectric permittivity of phospholipid membranes is presented here. The four-nanometer-thick membrane is treated as a composite made up of three dielectric slabs: one for each of the two phospholipid head-group regions, and one for the entire domain spanned by the lipid tails. Equal and opposite bound surface charge densities surround each head-group slab, and account for the membrane dipole potential. Three-slab model parameters are obtained from molecular dynamics simulations, and capture both the zero-field electric potential and the membrane response to applied e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.18852","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/2602.18852/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":"2026-07-31T01:33:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wJe/FCbKh7FSwP1y4q19K3kCoOximqxv8qY8F6t97n9zfyChPuhmjZmh1ddw+MK+w8O08K4AU9Cvc5aoT+lcBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T22:08:45.592929Z"},"content_sha256":"713f53a06230a820b3f8d7512bb7e64f72340b3e39accd8f4090db7c21fc255a","schema_version":"1.0","event_id":"sha256:713f53a06230a820b3f8d7512bb7e64f72340b3e39accd8f4090db7c21fc255a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IUTS5OCESHT5AKLCGQNUHXASKY/bundle.json","state_url":"https://pith.science/pith/IUTS5OCESHT5AKLCGQNUHXASKY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IUTS5OCESHT5AKLCGQNUHXASKY/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":"2026-08-21T22:08:45Z","links":{"resolver":"https://pith.science/pith/IUTS5OCESHT5AKLCGQNUHXASKY","bundle":"https://pith.science/pith/IUTS5OCESHT5AKLCGQNUHXASKY/bundle.json","state":"https://pith.science/pith/IUTS5OCESHT5AKLCGQNUHXASKY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IUTS5OCESHT5AKLCGQNUHXASKY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IUTS5OCESHT5AKLCGQNUHXASKY","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":"3340149317544119d4fb0fc74aa2db754771cd4411cd0e435cbcbc938b0813de","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-02-21T14:32:10Z","title_canon_sha256":"588c78d19195c91378fd25de1b10e278868702bfcb1e516e8c412cbbfe869191"},"schema_version":"1.0","source":{"id":"2602.18852","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2602.18852","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"arxiv_version","alias_value":"2602.18852v2","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.18852","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"pith_short_12","alias_value":"IUTS5OCESHT5","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"pith_short_16","alias_value":"IUTS5OCESHT5AKLC","created_at":"2026-07-31T01:33:17Z"},{"alias_kind":"pith_short_8","alias_value":"IUTS5OCE","created_at":"2026-07-31T01:33:17Z"}],"graph_snapshots":[{"event_id":"sha256:713f53a06230a820b3f8d7512bb7e64f72340b3e39accd8f4090db7c21fc255a","target":"graph","created_at":"2026-07-31T01:33:17Z","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/2602.18852/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A model for the tensorial dielectric permittivity of phospholipid membranes is presented here. The four-nanometer-thick membrane is treated as a composite made up of three dielectric slabs: one for each of the two phospholipid head-group regions, and one for the entire domain spanned by the lipid tails. Equal and opposite bound surface charge densities surround each head-group slab, and account for the membrane dipole potential. Three-slab model parameters are obtained from molecular dynamics simulations, and capture both the zero-field electric potential and the membrane response to applied e","authors_text":"Amaresh Sahu, M.M.B. Sheraj","cross_cats":["cond-mat.stat-mech","physics.bio-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-02-21T14:32:10Z","title":"Three-slab model for the dielectric permittivity of a lipid bilayer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.18852","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:b8b18ad5e789e4be9f98ab79abd8d80049d9dafa60665be0ae63b2280eecaefd","target":"record","created_at":"2026-07-31T01:33:17Z","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":"3340149317544119d4fb0fc74aa2db754771cd4411cd0e435cbcbc938b0813de","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-02-21T14:32:10Z","title_canon_sha256":"588c78d19195c91378fd25de1b10e278868702bfcb1e516e8c412cbbfe869191"},"schema_version":"1.0","source":{"id":"2602.18852","kind":"arxiv","version":2}},"canonical_sha256":"45272eb84491e7d02962341b43dc12562a4d35369dac14fb71770ee4a7fc8ac9","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"45272eb84491e7d02962341b43dc12562a4d35369dac14fb71770ee4a7fc8ac9","first_computed_at":"2026-07-31T01:33:17.034635Z","kind":"pith_receipt","last_reissued_at":"2026-07-31T01:33:17.034635Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2602.18852","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b8b18ad5e789e4be9f98ab79abd8d80049d9dafa60665be0ae63b2280eecaefd","sha256:713f53a06230a820b3f8d7512bb7e64f72340b3e39accd8f4090db7c21fc255a"],"state_sha256":"5264231962e11af51c6154c25e2d0f79cd6a6b3c0e50b729a55a2ffa2db0d818"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DvoiwfCShKRbXDCFHg9WyR85V7nXwgdJeZ9rw3ndBFUQfqroU94lMroDtJdnG/kdoVGTCPq4jC9fyAxfZSZrCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T22:08:45.598142Z","bundle_sha256":"00c4090eebf5576c267c1c32747e6e4ee3db0c2d22a1ce188122ca023359efa8"}}