{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:RSFAHHXXZ5BX7BMGWGY5NEHAH2","short_pith_number":"pith:RSFAHHXX","canonical_record":{"source":{"id":"1111.2029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-11-08T19:58:51Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"20d68179b38a160b4336daf262894c0497d9857982c5023ac78c4f39c3ae1f77","abstract_canon_sha256":"dfa82cd9833a258b1fa5742515877343eed45460af8dbf6280a6bdd6f542196d"},"schema_version":"1.0"},"canonical_sha256":"8c8a039ef7cf437f8586b1b1d690e03e93b38cd20627c220cca70bb0aa6ceb0e","source":{"kind":"arxiv","id":"1111.2029","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.2029","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1111.2029v1","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.2029","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"RSFAHHXXZ5BX","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"RSFAHHXXZ5BX7BMG","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"RSFAHHXX","created_at":"2026-05-18T12:26:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:RSFAHHXXZ5BX7BMGWGY5NEHAH2","target":"record","payload":{"canonical_record":{"source":{"id":"1111.2029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-11-08T19:58:51Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"20d68179b38a160b4336daf262894c0497d9857982c5023ac78c4f39c3ae1f77","abstract_canon_sha256":"dfa82cd9833a258b1fa5742515877343eed45460af8dbf6280a6bdd6f542196d"},"schema_version":"1.0"},"canonical_sha256":"8c8a039ef7cf437f8586b1b1d690e03e93b38cd20627c220cca70bb0aa6ceb0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:07:07.528248Z","signature_b64":"vZhiy+BP0wB6GsAbiuEwzf1cwNDI7/51aL7c2i6nyFPdbQ/g5xaJ2R04oszR5WdXii/v/nQb004xNSoOTBKSAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c8a039ef7cf437f8586b1b1d690e03e93b38cd20627c220cca70bb0aa6ceb0e","last_reissued_at":"2026-05-18T04:07:07.527461Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:07:07.527461Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.2029","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":"2026-05-18T04:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QV5M2nRtHqSznGYUzx6rVFf3UM8AFwOiEcp2mA5IEJcNhzFMzeQfQfCm2CC8CFD2TGfRaWmTCO+9MR3pp4rlDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T11:01:02.033953Z"},"content_sha256":"25e96cadc333a4cf2ef196b27235d51887fae842a7580d6cf883032c6e122695","schema_version":"1.0","event_id":"sha256:25e96cadc333a4cf2ef196b27235d51887fae842a7580d6cf883032c6e122695"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:RSFAHHXXZ5BX7BMGWGY5NEHAH2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Comment on 'Statistical mechanics of developable ribbons' by L. Giomi and L. Mahadevan","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"E. L. Starostin, G. H. M. van der Heijden","submitted_at":"2011-11-08T19:58:51Z","abstract_excerpt":"Giomi and Mahadevan [Phys. Rev. Lett. 104, 238104 (2010)] study the statistical mechanics of elastic ribbons and claim to provide evidence for \"an underlying helical structure\" of ribbon-like polymers even in the absence of intrinsic curvature (or, in the authors' words, \"of a preferential zero-temperature twist\"). They find a persistence length that is over three times that of a wormlike chain having the same bending rigidity. We show that these results are an artefact of the authors' flawed formulation, which produces a helical bias, and that no support for the described effect can be claime"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2029","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":"2026-05-18T04:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"In+no9qXBWODP69jhjD/YqZZjonLvjzAoHLrVi5xnILNcetmzvri5IggJOnIoR/rT+lHa6zG2+Kl8OGY/9+LAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T11:01:02.034294Z"},"content_sha256":"4253c9d3fc33907b9ffe73ae57bd73945958256248993785a2a3358f518d24a3","schema_version":"1.0","event_id":"sha256:4253c9d3fc33907b9ffe73ae57bd73945958256248993785a2a3358f518d24a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2/bundle.json","state_url":"https://pith.science/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2/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":"2026-07-02T11:01:02Z","links":{"resolver":"https://pith.science/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2","bundle":"https://pith.science/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2/bundle.json","state":"https://pith.science/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RSFAHHXXZ5BX7BMGWGY5NEHAH2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:RSFAHHXXZ5BX7BMGWGY5NEHAH2","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":"dfa82cd9833a258b1fa5742515877343eed45460af8dbf6280a6bdd6f542196d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-11-08T19:58:51Z","title_canon_sha256":"20d68179b38a160b4336daf262894c0497d9857982c5023ac78c4f39c3ae1f77"},"schema_version":"1.0","source":{"id":"1111.2029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.2029","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1111.2029v1","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.2029","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"RSFAHHXXZ5BX","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"RSFAHHXXZ5BX7BMG","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"RSFAHHXX","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:4253c9d3fc33907b9ffe73ae57bd73945958256248993785a2a3358f518d24a3","target":"graph","created_at":"2026-05-18T04:07:07Z","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":"Giomi and Mahadevan [Phys. Rev. Lett. 104, 238104 (2010)] study the statistical mechanics of elastic ribbons and claim to provide evidence for \"an underlying helical structure\" of ribbon-like polymers even in the absence of intrinsic curvature (or, in the authors' words, \"of a preferential zero-temperature twist\"). They find a persistence length that is over three times that of a wormlike chain having the same bending rigidity. We show that these results are an artefact of the authors' flawed formulation, which produces a helical bias, and that no support for the described effect can be claime","authors_text":"E. L. Starostin, G. H. M. van der Heijden","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-11-08T19:58:51Z","title":"Comment on 'Statistical mechanics of developable ribbons' by L. Giomi and L. Mahadevan"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2029","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":"sha256:25e96cadc333a4cf2ef196b27235d51887fae842a7580d6cf883032c6e122695","target":"record","created_at":"2026-05-18T04:07:07Z","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":"dfa82cd9833a258b1fa5742515877343eed45460af8dbf6280a6bdd6f542196d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-11-08T19:58:51Z","title_canon_sha256":"20d68179b38a160b4336daf262894c0497d9857982c5023ac78c4f39c3ae1f77"},"schema_version":"1.0","source":{"id":"1111.2029","kind":"arxiv","version":1}},"canonical_sha256":"8c8a039ef7cf437f8586b1b1d690e03e93b38cd20627c220cca70bb0aa6ceb0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c8a039ef7cf437f8586b1b1d690e03e93b38cd20627c220cca70bb0aa6ceb0e","first_computed_at":"2026-05-18T04:07:07.527461Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:07:07.527461Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vZhiy+BP0wB6GsAbiuEwzf1cwNDI7/51aL7c2i6nyFPdbQ/g5xaJ2R04oszR5WdXii/v/nQb004xNSoOTBKSAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:07:07.528248Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.2029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25e96cadc333a4cf2ef196b27235d51887fae842a7580d6cf883032c6e122695","sha256:4253c9d3fc33907b9ffe73ae57bd73945958256248993785a2a3358f518d24a3"],"state_sha256":"bcd87a68ceba704255d85a9aa0a9658c0a847c5e2d38cdddd498abe447a9e044"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ElHTl3UqzUJVsKIOX5j0lIJ84inZRrmmG9UJXY9OZbHrurdJhjcm4tHtXfib8hUQI3qFq6yy+s2od55velMUBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T11:01:02.036168Z","bundle_sha256":"a1e822cfb74de898eea4d0d6b5478075f5109e44dca3215d51b81daae3125fc0"}}