{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:OVY5KS4W6NNNIN66O3DNUYH24Q","short_pith_number":"pith:OVY5KS4W","canonical_record":{"source":{"id":"2605.25989","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-05-25T16:07:19Z","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"title_canon_sha256":"a80dab8cdb26c7fc0dd7612c5096e7e7d7e1834e0ce4957c02ef0cebdb7b5c20","abstract_canon_sha256":"94146bb4797de3b63dfa218650c8795b497dfb82314288bb4a16016cb3c825b2"},"schema_version":"1.0"},"canonical_sha256":"7571d54b96f35ad437de76c6da60fae4180473b36e9ca33b07dd2fcf5ce05974","source":{"kind":"arxiv","id":"2605.25989","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.25989","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"arxiv_version","alias_value":"2605.25989v1","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.25989","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"pith_short_12","alias_value":"OVY5KS4W6NNN","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"pith_short_16","alias_value":"OVY5KS4W6NNNIN66","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"pith_short_8","alias_value":"OVY5KS4W","created_at":"2026-05-26T02:05:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:OVY5KS4W6NNNIN66O3DNUYH24Q","target":"record","payload":{"canonical_record":{"source":{"id":"2605.25989","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-05-25T16:07:19Z","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"title_canon_sha256":"a80dab8cdb26c7fc0dd7612c5096e7e7d7e1834e0ce4957c02ef0cebdb7b5c20","abstract_canon_sha256":"94146bb4797de3b63dfa218650c8795b497dfb82314288bb4a16016cb3c825b2"},"schema_version":"1.0"},"canonical_sha256":"7571d54b96f35ad437de76c6da60fae4180473b36e9ca33b07dd2fcf5ce05974","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T02:05:22.084303Z","signature_b64":"7kzBmtyX5A01QUPjRPO4FyzLnnZdlYCQHhg/b4QgRxBzG2WCRyn/USPBvHYMnRyHYn46RiBMtP1PnFMJPFOrAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7571d54b96f35ad437de76c6da60fae4180473b36e9ca33b07dd2fcf5ce05974","last_reissued_at":"2026-05-26T02:05:22.083502Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T02:05:22.083502Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.25989","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":"2026-05-26T02:05:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"49ePRjDrBPWeTxh06CiSwa7LevcRSc8A44of97lJHiqArsHdrmEpGYmag9DthoTnw6qDypkGfe+0+t6Xkl5PBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:51:22.405349Z"},"content_sha256":"5a4835c0b319a693efb61a3f073c46f88b15d9aa87b38aeb105b4fe85e68630e","schema_version":"1.0","event_id":"sha256:5a4835c0b319a693efb61a3f073c46f88b15d9aa87b38aeb105b4fe85e68630e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:OVY5KS4W6NNNIN66O3DNUYH24Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Beyond Gaussian Statistics in Polymer Melts: Statistical Masking of Persistent Local Constraints","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":"Jos\\'e A. Martins","submitted_at":"2026-05-25T16:07:19Z","abstract_excerpt":"Short polymer chains exhibit clear deviations from Gaussian end-to-end distance statistics, yet the molecular mechanism by which Gaussian behavior is recovered in long chains remains unestablished. Atomistic molecular dynamics simulations of polyethylene melts reveal that conformational heterogeneity persists at the Kuhn scale across all chain lengths, consisting of a mosaic of slow-relaxing, extended aligned chain segments (ACS) and coiled segments -- random conformational sequences (RCS) and chain ends (CE). We show that the end-to-end distance distributions for both unentangled and entangle"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.25989","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/2605.25989/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":"2026-05-26T02:05:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7pO3NmNNVp/uOiEouxqY8s44IIvMEL+K7E4/lj4voBtLk24pw2FSEulay5Fw2Yf9zN/U2rBQGdeaqi3D+NeQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:51:22.405858Z"},"content_sha256":"615601df659201ad69e20fac2aff068a4615feff4313d6b9b8a95078e7bf5209","schema_version":"1.0","event_id":"sha256:615601df659201ad69e20fac2aff068a4615feff4313d6b9b8a95078e7bf5209"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVY5KS4W6NNNIN66O3DNUYH24Q/bundle.json","state_url":"https://pith.science/pith/OVY5KS4W6NNNIN66O3DNUYH24Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVY5KS4W6NNNIN66O3DNUYH24Q/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":"2026-08-19T19:51:22Z","links":{"resolver":"https://pith.science/pith/OVY5KS4W6NNNIN66O3DNUYH24Q","bundle":"https://pith.science/pith/OVY5KS4W6NNNIN66O3DNUYH24Q/bundle.json","state":"https://pith.science/pith/OVY5KS4W6NNNIN66O3DNUYH24Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVY5KS4W6NNNIN66O3DNUYH24Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:OVY5KS4W6NNNIN66O3DNUYH24Q","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":"94146bb4797de3b63dfa218650c8795b497dfb82314288bb4a16016cb3c825b2","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":"2026-05-25T16:07:19Z","title_canon_sha256":"a80dab8cdb26c7fc0dd7612c5096e7e7d7e1834e0ce4957c02ef0cebdb7b5c20"},"schema_version":"1.0","source":{"id":"2605.25989","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.25989","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"arxiv_version","alias_value":"2605.25989v1","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.25989","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"pith_short_12","alias_value":"OVY5KS4W6NNN","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"pith_short_16","alias_value":"OVY5KS4W6NNNIN66","created_at":"2026-05-26T02:05:22Z"},{"alias_kind":"pith_short_8","alias_value":"OVY5KS4W","created_at":"2026-05-26T02:05:22Z"}],"graph_snapshots":[{"event_id":"sha256:615601df659201ad69e20fac2aff068a4615feff4313d6b9b8a95078e7bf5209","target":"graph","created_at":"2026-05-26T02:05:22Z","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/2605.25989/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Short polymer chains exhibit clear deviations from Gaussian end-to-end distance statistics, yet the molecular mechanism by which Gaussian behavior is recovered in long chains remains unestablished. Atomistic molecular dynamics simulations of polyethylene melts reveal that conformational heterogeneity persists at the Kuhn scale across all chain lengths, consisting of a mosaic of slow-relaxing, extended aligned chain segments (ACS) and coiled segments -- random conformational sequences (RCS) and chain ends (CE). We show that the end-to-end distance distributions for both unentangled and entangle","authors_text":"Jos\\'e A. Martins","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":"2026-05-25T16:07:19Z","title":"Beyond Gaussian Statistics in Polymer Melts: Statistical Masking of Persistent Local Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.25989","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":"sha256:5a4835c0b319a693efb61a3f073c46f88b15d9aa87b38aeb105b4fe85e68630e","target":"record","created_at":"2026-05-26T02:05:22Z","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":"94146bb4797de3b63dfa218650c8795b497dfb82314288bb4a16016cb3c825b2","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":"2026-05-25T16:07:19Z","title_canon_sha256":"a80dab8cdb26c7fc0dd7612c5096e7e7d7e1834e0ce4957c02ef0cebdb7b5c20"},"schema_version":"1.0","source":{"id":"2605.25989","kind":"arxiv","version":1}},"canonical_sha256":"7571d54b96f35ad437de76c6da60fae4180473b36e9ca33b07dd2fcf5ce05974","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7571d54b96f35ad437de76c6da60fae4180473b36e9ca33b07dd2fcf5ce05974","first_computed_at":"2026-05-26T02:05:22.083502Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T02:05:22.083502Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7kzBmtyX5A01QUPjRPO4FyzLnnZdlYCQHhg/b4QgRxBzG2WCRyn/USPBvHYMnRyHYn46RiBMtP1PnFMJPFOrAA==","signature_status":"signed_v1","signed_at":"2026-05-26T02:05:22.084303Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.25989","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a4835c0b319a693efb61a3f073c46f88b15d9aa87b38aeb105b4fe85e68630e","sha256:615601df659201ad69e20fac2aff068a4615feff4313d6b9b8a95078e7bf5209"],"state_sha256":"461e0547197a0341dfb9af9ba8c3a850e75f475ceb50aaa6845aedfddfd65e2e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qq+D/1FQuFEi1G33xEpCQ8J9Vn0JOa0RXdSOf2FByadMgoHwtnjEH1Q714u8OnLUIsDx1essJLrGSD4gd9vUBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T19:51:22.410930Z","bundle_sha256":"381d18f1b9a3b7f963234beb302c5db35301d43bf07448c908a0cf0a5209765c"}}