{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:EWN4JDUGRYKUXFCF5T5IUW7BLP","short_pith_number":"pith:EWN4JDUG","canonical_record":{"source":{"id":"cond-mat/0207122","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2002-07-04T08:08:55Z","cross_cats_sorted":["q-bio"],"title_canon_sha256":"701668d35e27d15c021b16dbfb499da6f7a5a274024b9adfe7d6cc9ed298c3e9","abstract_canon_sha256":"0d11bdfed43dd60e32875e6f0c955de3a6d50008433d088db209881aa4a6f594"},"schema_version":"1.0"},"canonical_sha256":"259bc48e868e154b9445ecfa8a5be15beadd349c1ad328f7b2556de86b7f0730","source":{"kind":"arxiv","id":"cond-mat/0207122","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0207122","created_at":"2026-05-18T01:06:59Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0207122v1","created_at":"2026-05-18T01:06:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0207122","created_at":"2026-05-18T01:06:59Z"},{"alias_kind":"pith_short_12","alias_value":"EWN4JDUGRYKU","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"EWN4JDUGRYKUXFCF","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"EWN4JDUG","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:EWN4JDUGRYKUXFCF5T5IUW7BLP","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0207122","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2002-07-04T08:08:55Z","cross_cats_sorted":["q-bio"],"title_canon_sha256":"701668d35e27d15c021b16dbfb499da6f7a5a274024b9adfe7d6cc9ed298c3e9","abstract_canon_sha256":"0d11bdfed43dd60e32875e6f0c955de3a6d50008433d088db209881aa4a6f594"},"schema_version":"1.0"},"canonical_sha256":"259bc48e868e154b9445ecfa8a5be15beadd349c1ad328f7b2556de86b7f0730","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:59.268967Z","signature_b64":"ECLpRfE9Vxhqu4mXdVfbj+RmqWpHzLonNRmCE1sb6efvHAi1vV/LKRFSnW+OhGEIc9CMT3pD776GF/EeBs+9BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"259bc48e868e154b9445ecfa8a5be15beadd349c1ad328f7b2556de86b7f0730","last_reissued_at":"2026-05-18T01:06:59.268242Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:59.268242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0207122","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":"2026-05-18T01:06:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K8jZz7JbxzTcqp3l/TSD85paRzrUH4Htxm4FCvSfLcp0XwihR7GAtVSQjhpA40RZkVpj20mGYpKOVP44kJUMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:05:36.494071Z"},"content_sha256":"111fbeab7dbc54ea53af2fef2c62aaf21a6f713b4ea7e64182f922d2d34b5ac2","schema_version":"1.0","event_id":"sha256:111fbeab7dbc54ea53af2fef2c62aaf21a6f713b4ea7e64182f922d2d34b5ac2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:EWN4JDUGRYKUXFCF5T5IUW7BLP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A simple model of DNA denaturation and mutually avoiding walks statistics","license":"","headline":"","cross_cats":["q-bio"],"primary_cat":"cond-mat.stat-mech","authors_text":"Attilio L. Stella, Enrico Carlon, Enzo Orlandini, Marco Baiesi","submitted_at":"2002-07-04T08:08:55Z","abstract_excerpt":"Recently Garel, Monthus and Orland (Europhys. Lett. v 55, 132 (2001)) considered a model of DNA denaturation in which excluded volume effects within each strand are neglected, while mutual avoidance is included. Using an approximate scheme they found a first order denaturation. We show that a first order transition for this model follows from exact results for the statistics of two mutually avoiding random walks, whose reunion exponent is c > 2, both in two and three dimensions. Analytical estimates of c due to the interactions with other denaturated loops, as well as numerical calculations, i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0207122","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":""},"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":"2026-05-18T01:06:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bSW4IuL7lJyhCGbpNx1d96cJiVox2oTmzxk6VYjChO1ZFR1cXC6OJNnYDDTSH1sbghDtokqk0ViGhfhAk35zDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:05:36.494800Z"},"content_sha256":"72b899a6925d1b0648704f5bfebdfe5fc4ab94371086a5d91b11b844988ab95e","schema_version":"1.0","event_id":"sha256:72b899a6925d1b0648704f5bfebdfe5fc4ab94371086a5d91b11b844988ab95e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP/bundle.json","state_url":"https://pith.science/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP/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":"2026-05-25T10:05:36Z","links":{"resolver":"https://pith.science/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP","bundle":"https://pith.science/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP/bundle.json","state":"https://pith.science/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EWN4JDUGRYKUXFCF5T5IUW7BLP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:EWN4JDUGRYKUXFCF5T5IUW7BLP","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":"0d11bdfed43dd60e32875e6f0c955de3a6d50008433d088db209881aa4a6f594","cross_cats_sorted":["q-bio"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2002-07-04T08:08:55Z","title_canon_sha256":"701668d35e27d15c021b16dbfb499da6f7a5a274024b9adfe7d6cc9ed298c3e9"},"schema_version":"1.0","source":{"id":"cond-mat/0207122","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0207122","created_at":"2026-05-18T01:06:59Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0207122v1","created_at":"2026-05-18T01:06:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0207122","created_at":"2026-05-18T01:06:59Z"},{"alias_kind":"pith_short_12","alias_value":"EWN4JDUGRYKU","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"EWN4JDUGRYKUXFCF","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"EWN4JDUG","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:72b899a6925d1b0648704f5bfebdfe5fc4ab94371086a5d91b11b844988ab95e","target":"graph","created_at":"2026-05-18T01:06:59Z","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":"Recently Garel, Monthus and Orland (Europhys. Lett. v 55, 132 (2001)) considered a model of DNA denaturation in which excluded volume effects within each strand are neglected, while mutual avoidance is included. Using an approximate scheme they found a first order denaturation. We show that a first order transition for this model follows from exact results for the statistics of two mutually avoiding random walks, whose reunion exponent is c > 2, both in two and three dimensions. Analytical estimates of c due to the interactions with other denaturated loops, as well as numerical calculations, i","authors_text":"Attilio L. Stella, Enrico Carlon, Enzo Orlandini, Marco Baiesi","cross_cats":["q-bio"],"headline":"","license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2002-07-04T08:08:55Z","title":"A simple model of DNA denaturation and mutually avoiding walks statistics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0207122","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":"sha256:111fbeab7dbc54ea53af2fef2c62aaf21a6f713b4ea7e64182f922d2d34b5ac2","target":"record","created_at":"2026-05-18T01:06:59Z","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":"0d11bdfed43dd60e32875e6f0c955de3a6d50008433d088db209881aa4a6f594","cross_cats_sorted":["q-bio"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2002-07-04T08:08:55Z","title_canon_sha256":"701668d35e27d15c021b16dbfb499da6f7a5a274024b9adfe7d6cc9ed298c3e9"},"schema_version":"1.0","source":{"id":"cond-mat/0207122","kind":"arxiv","version":1}},"canonical_sha256":"259bc48e868e154b9445ecfa8a5be15beadd349c1ad328f7b2556de86b7f0730","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"259bc48e868e154b9445ecfa8a5be15beadd349c1ad328f7b2556de86b7f0730","first_computed_at":"2026-05-18T01:06:59.268242Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:59.268242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ECLpRfE9Vxhqu4mXdVfbj+RmqWpHzLonNRmCE1sb6efvHAi1vV/LKRFSnW+OhGEIc9CMT3pD776GF/EeBs+9BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:59.268967Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0207122","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:111fbeab7dbc54ea53af2fef2c62aaf21a6f713b4ea7e64182f922d2d34b5ac2","sha256:72b899a6925d1b0648704f5bfebdfe5fc4ab94371086a5d91b11b844988ab95e"],"state_sha256":"236ed1054ef89ce6c7c66da7de427efd24eb0bc8723a551541b21ab8083f9f7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Q1m5krCvBvQYluaX4C9GwH1D0o9h8yTj7R9ScMn8L1MkPl+7pNiyMOVvdSyGnLLv8K814ygYYSh3r1G+38+Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T10:05:36.498324Z","bundle_sha256":"479474bd537c3985ff1f2bbc538cb200f49edc5344a9f9fb4417c2ecdfb2ef83"}}