{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:G5ZIWAAUWK4MEUSKQ2VXTTE3FH","short_pith_number":"pith:G5ZIWAAU","canonical_record":{"source":{"id":"1002.3485","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2010-02-18T10:57:35Z","cross_cats_sorted":["cond-mat.soft","cond-mat.stat-mech"],"title_canon_sha256":"437506318eddcbe7fcb8a12c066c994acecedc730ef23ab923612ddddbed7caa","abstract_canon_sha256":"4cefe5bd3c65642a76fca96283f664732e9d59f4e57b5ac48ecf3c880644ebd7"},"schema_version":"1.0"},"canonical_sha256":"37728b0014b2b8c2524a86ab79cc9b29f0e70830b4ec07cf7c9e25c420ee02f3","source":{"kind":"arxiv","id":"1002.3485","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.3485","created_at":"2026-05-18T02:08:59Z"},{"alias_kind":"arxiv_version","alias_value":"1002.3485v2","created_at":"2026-05-18T02:08:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.3485","created_at":"2026-05-18T02:08:59Z"},{"alias_kind":"pith_short_12","alias_value":"G5ZIWAAUWK4M","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G5ZIWAAUWK4MEUSK","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G5ZIWAAU","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:G5ZIWAAUWK4MEUSKQ2VXTTE3FH","target":"record","payload":{"canonical_record":{"source":{"id":"1002.3485","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2010-02-18T10:57:35Z","cross_cats_sorted":["cond-mat.soft","cond-mat.stat-mech"],"title_canon_sha256":"437506318eddcbe7fcb8a12c066c994acecedc730ef23ab923612ddddbed7caa","abstract_canon_sha256":"4cefe5bd3c65642a76fca96283f664732e9d59f4e57b5ac48ecf3c880644ebd7"},"schema_version":"1.0"},"canonical_sha256":"37728b0014b2b8c2524a86ab79cc9b29f0e70830b4ec07cf7c9e25c420ee02f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:59.676437Z","signature_b64":"QRYyaoXJq8bSU1WONOKo8o1VNgIRdPHbwUCpp46six63EIc1tuSGzai46gGkquNWVqdcilh68EmBIN83xooyDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37728b0014b2b8c2524a86ab79cc9b29f0e70830b4ec07cf7c9e25c420ee02f3","last_reissued_at":"2026-05-18T02:08:59.675752Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:59.675752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1002.3485","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":"2026-05-18T02:08:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nkz9bweCY5NcRllL1NykhlQrVEGFnHKtoB4DNWo7jbcq79tGwz/H3+uKEIrUYNeC1DqfNHxFbVfZQ2w9D8kUCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:06:03.902121Z"},"content_sha256":"e5be4585f1e8a8cf86bb6eb8bc6ad6ecaa565d64a9f9cbf0efa4d4bd3bbfd3b2","schema_version":"1.0","event_id":"sha256:e5be4585f1e8a8cf86bb6eb8bc6ad6ecaa565d64a9f9cbf0efa4d4bd3bbfd3b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:G5ZIWAAUWK4MEUSKQ2VXTTE3FH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A three-state model with loop entropy for the over-stretching transition of DNA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft","cond-mat.stat-mech"],"primary_cat":"physics.bio-ph","authors_text":"(2) Department of Physics, 3), (3) Max-Planck-Institut fuer Physik komplexer Systeme, Atmospheric Science, Dalhousie University, Douglas B. Staple (2, Dresden), Garching, Germany, Hans-Juergen Kreuzer (2), Roland R. Netz (1) ((1) Physik Department, Technische Universitaet Muenchen, Thomas R. Einert (1)","submitted_at":"2010-02-18T10:57:35Z","abstract_excerpt":"We introduce a three-state model for a single DNA chain under tension that distinguishes between B-DNA, S-DNA and M (molten or denatured) segments and at the same time correctly accounts for the entropy of molten loops, characterized by the exponent c in the asymptotic expression S ~ - c ln n for the entropy of a loop of length n. Force extension curves are derived exactly employing a generalized Poland-Scheraga approach and compared to experimental data. Simultaneous fitting to force-extension data at room temperature and to the denaturation phase transition at zero force is possible and allo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.3485","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":""},"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":"2026-05-18T02:08:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SQrO9T5r1AscBz5hxm1LUmvPAayaQ3jNPHBM7vdkNVyTDkvDxrtSDtlAENRcJgntIEuJvUpahSddofdZmJM0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:06:03.902745Z"},"content_sha256":"7d8a9d24acbecfc75dc44b5921ef7c1cf54ca52cf20ee1adc59ba88dd9b24633","schema_version":"1.0","event_id":"sha256:7d8a9d24acbecfc75dc44b5921ef7c1cf54ca52cf20ee1adc59ba88dd9b24633"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH/bundle.json","state_url":"https://pith.science/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH/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":"2026-05-28T22:06:03Z","links":{"resolver":"https://pith.science/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH","bundle":"https://pith.science/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH/bundle.json","state":"https://pith.science/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G5ZIWAAUWK4MEUSKQ2VXTTE3FH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:G5ZIWAAUWK4MEUSKQ2VXTTE3FH","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":"4cefe5bd3c65642a76fca96283f664732e9d59f4e57b5ac48ecf3c880644ebd7","cross_cats_sorted":["cond-mat.soft","cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2010-02-18T10:57:35Z","title_canon_sha256":"437506318eddcbe7fcb8a12c066c994acecedc730ef23ab923612ddddbed7caa"},"schema_version":"1.0","source":{"id":"1002.3485","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.3485","created_at":"2026-05-18T02:08:59Z"},{"alias_kind":"arxiv_version","alias_value":"1002.3485v2","created_at":"2026-05-18T02:08:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.3485","created_at":"2026-05-18T02:08:59Z"},{"alias_kind":"pith_short_12","alias_value":"G5ZIWAAUWK4M","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G5ZIWAAUWK4MEUSK","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G5ZIWAAU","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:7d8a9d24acbecfc75dc44b5921ef7c1cf54ca52cf20ee1adc59ba88dd9b24633","target":"graph","created_at":"2026-05-18T02:08:59Z","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"},"paper":{"abstract_excerpt":"We introduce a three-state model for a single DNA chain under tension that distinguishes between B-DNA, S-DNA and M (molten or denatured) segments and at the same time correctly accounts for the entropy of molten loops, characterized by the exponent c in the asymptotic expression S ~ - c ln n for the entropy of a loop of length n. Force extension curves are derived exactly employing a generalized Poland-Scheraga approach and compared to experimental data. Simultaneous fitting to force-extension data at room temperature and to the denaturation phase transition at zero force is possible and allo","authors_text":"(2) Department of Physics, 3), (3) Max-Planck-Institut fuer Physik komplexer Systeme, Atmospheric Science, Dalhousie University, Douglas B. Staple (2, Dresden), Garching, Germany, Hans-Juergen Kreuzer (2), Roland R. Netz (1) ((1) Physik Department, Technische Universitaet Muenchen, Thomas R. Einert (1)","cross_cats":["cond-mat.soft","cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2010-02-18T10:57:35Z","title":"A three-state model with loop entropy for the over-stretching transition of DNA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.3485","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:e5be4585f1e8a8cf86bb6eb8bc6ad6ecaa565d64a9f9cbf0efa4d4bd3bbfd3b2","target":"record","created_at":"2026-05-18T02:08:59Z","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":"4cefe5bd3c65642a76fca96283f664732e9d59f4e57b5ac48ecf3c880644ebd7","cross_cats_sorted":["cond-mat.soft","cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2010-02-18T10:57:35Z","title_canon_sha256":"437506318eddcbe7fcb8a12c066c994acecedc730ef23ab923612ddddbed7caa"},"schema_version":"1.0","source":{"id":"1002.3485","kind":"arxiv","version":2}},"canonical_sha256":"37728b0014b2b8c2524a86ab79cc9b29f0e70830b4ec07cf7c9e25c420ee02f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"37728b0014b2b8c2524a86ab79cc9b29f0e70830b4ec07cf7c9e25c420ee02f3","first_computed_at":"2026-05-18T02:08:59.675752Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:59.675752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QRYyaoXJq8bSU1WONOKo8o1VNgIRdPHbwUCpp46six63EIc1tuSGzai46gGkquNWVqdcilh68EmBIN83xooyDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:59.676437Z","signed_message":"canonical_sha256_bytes"},"source_id":"1002.3485","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5be4585f1e8a8cf86bb6eb8bc6ad6ecaa565d64a9f9cbf0efa4d4bd3bbfd3b2","sha256:7d8a9d24acbecfc75dc44b5921ef7c1cf54ca52cf20ee1adc59ba88dd9b24633"],"state_sha256":"a01122613c67f5688081a40a66889c80da3b9375b9df3773564e9d1c2a989166"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gLGGT+v+4Swvt+wGIGkZvEPuicgnSlmnizv8CqNKizSsb8dNdRmvdMZznUHCuKEUNllqjXJauoRRoVWBvn8bBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T22:06:03.906329Z","bundle_sha256":"1fa75585f11e6b07aebe8a25f5435bc95a74c9ab39dbdd2f208ba38ab79d8998"}}