{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:NOQRVSMFAWYIGXRDLZS4FJJX2Z","short_pith_number":"pith:NOQRVSMF","canonical_record":{"source":{"id":"1109.4701","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-09-22T04:38:14Z","cross_cats_sorted":[],"title_canon_sha256":"a9cda65232bdd90fd371c78947faac7fd9e2110955102372f540750790f692da","abstract_canon_sha256":"b0c00461ce2211e9db4a4706c5c7150bcfd44a939c961e335adb0403144d9bfd"},"schema_version":"1.0"},"canonical_sha256":"6ba11ac98505b0835e235e65c2a537d679d3da22a1d02e3c39b132776e9943ac","source":{"kind":"arxiv","id":"1109.4701","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.4701","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"1109.4701v1","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.4701","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"NOQRVSMFAWYI","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NOQRVSMFAWYIGXRD","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NOQRVSMF","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:NOQRVSMFAWYIGXRDLZS4FJJX2Z","target":"record","payload":{"canonical_record":{"source":{"id":"1109.4701","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-09-22T04:38:14Z","cross_cats_sorted":[],"title_canon_sha256":"a9cda65232bdd90fd371c78947faac7fd9e2110955102372f540750790f692da","abstract_canon_sha256":"b0c00461ce2211e9db4a4706c5c7150bcfd44a939c961e335adb0403144d9bfd"},"schema_version":"1.0"},"canonical_sha256":"6ba11ac98505b0835e235e65c2a537d679d3da22a1d02e3c39b132776e9943ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:12:33.100243Z","signature_b64":"s6F/kGdLtN0AfIdBBlbiFAKmuvZq6nov9huSDNWE0218owh7eQVeRL6cKrqOi+2ZVeuFRmxKurCs45f+//h6Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ba11ac98505b0835e235e65c2a537d679d3da22a1d02e3c39b132776e9943ac","last_reissued_at":"2026-05-18T04:12:33.099760Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:12:33.099760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.4701","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":"2026-05-18T04:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"32NqHJNKsf6CKZ+dMRzYkBu48zS3oYZMOtvntLPs6RFkXrf278M/nkQ68qs54fhBFlZwm0TPiv6vIfNZzYfwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:21:37.232107Z"},"content_sha256":"6cc17507ebe146bc1a324cc323a97f40ddbe9fe278e6859ded2cbee02e443609","schema_version":"1.0","event_id":"sha256:6cc17507ebe146bc1a324cc323a97f40ddbe9fe278e6859ded2cbee02e443609"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:NOQRVSMFAWYIGXRDLZS4FJJX2Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling anisotropic elasticity of fluid membranes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.bio-ph","authors_text":"John H. Ipsen, N. Ramakrishnan, P. B. Sunil Kumar","submitted_at":"2011-09-22T04:38:14Z","abstract_excerpt":"The biological membrane, which compartmentalizes the cell and its organelles, exhibit wide variety of macroscopic shapes of varying morphology and topology. A systematic understanding of the relation of membrane shapes to composition, external field, environmental conditions etc. have important biological relevance. Here we review the triangulated surface model, used in the macroscopic simulation of membranes and the associated Monte Carlo (DTMC) methods. New techniques to calculate surface quantifiers, that will facilitate the study of additional in-plane orientational degrees of freedom, has"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.4701","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":"2026-05-18T04:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k8qJXrin7WzlF6l+DdmEYe6a0FvOXQ28tw5kl29fqmVIQpYLqyEVJR5Du+3iSojayOh/68s9U1PGMljt4jx4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:21:37.232772Z"},"content_sha256":"7f30636e4d13b6677d1cf055caffb0dac2bd2df8f95b5a716acef829cf1b3004","schema_version":"1.0","event_id":"sha256:7f30636e4d13b6677d1cf055caffb0dac2bd2df8f95b5a716acef829cf1b3004"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z/bundle.json","state_url":"https://pith.science/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z/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":"2026-05-31T12:21:37Z","links":{"resolver":"https://pith.science/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z","bundle":"https://pith.science/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z/bundle.json","state":"https://pith.science/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NOQRVSMFAWYIGXRDLZS4FJJX2Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:NOQRVSMFAWYIGXRDLZS4FJJX2Z","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":"b0c00461ce2211e9db4a4706c5c7150bcfd44a939c961e335adb0403144d9bfd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-09-22T04:38:14Z","title_canon_sha256":"a9cda65232bdd90fd371c78947faac7fd9e2110955102372f540750790f692da"},"schema_version":"1.0","source":{"id":"1109.4701","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.4701","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"1109.4701v1","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.4701","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"NOQRVSMFAWYI","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NOQRVSMFAWYIGXRD","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NOQRVSMF","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:7f30636e4d13b6677d1cf055caffb0dac2bd2df8f95b5a716acef829cf1b3004","target":"graph","created_at":"2026-05-18T04:12:33Z","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":"The biological membrane, which compartmentalizes the cell and its organelles, exhibit wide variety of macroscopic shapes of varying morphology and topology. A systematic understanding of the relation of membrane shapes to composition, external field, environmental conditions etc. have important biological relevance. Here we review the triangulated surface model, used in the macroscopic simulation of membranes and the associated Monte Carlo (DTMC) methods. New techniques to calculate surface quantifiers, that will facilitate the study of additional in-plane orientational degrees of freedom, has","authors_text":"John H. Ipsen, N. Ramakrishnan, P. B. Sunil Kumar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-09-22T04:38:14Z","title":"Modeling anisotropic elasticity of fluid membranes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.4701","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":"sha256:6cc17507ebe146bc1a324cc323a97f40ddbe9fe278e6859ded2cbee02e443609","target":"record","created_at":"2026-05-18T04:12:33Z","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":"b0c00461ce2211e9db4a4706c5c7150bcfd44a939c961e335adb0403144d9bfd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-09-22T04:38:14Z","title_canon_sha256":"a9cda65232bdd90fd371c78947faac7fd9e2110955102372f540750790f692da"},"schema_version":"1.0","source":{"id":"1109.4701","kind":"arxiv","version":1}},"canonical_sha256":"6ba11ac98505b0835e235e65c2a537d679d3da22a1d02e3c39b132776e9943ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ba11ac98505b0835e235e65c2a537d679d3da22a1d02e3c39b132776e9943ac","first_computed_at":"2026-05-18T04:12:33.099760Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:12:33.099760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s6F/kGdLtN0AfIdBBlbiFAKmuvZq6nov9huSDNWE0218owh7eQVeRL6cKrqOi+2ZVeuFRmxKurCs45f+//h6Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:12:33.100243Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.4701","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cc17507ebe146bc1a324cc323a97f40ddbe9fe278e6859ded2cbee02e443609","sha256:7f30636e4d13b6677d1cf055caffb0dac2bd2df8f95b5a716acef829cf1b3004"],"state_sha256":"9431b7867b86646ee02f04a23fa0c7d867357d3428d8c1b7f6702190b71dee6d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7aNELI7n+20BNl4dQ2r3Zv0Z3FZEWHBqqkPxwxH1dqQYG3ZQuSr42vCKc5/g05/bzZ03A+OH/72iLYAN946LAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:21:37.236789Z","bundle_sha256":"de4763e427d79eec1943597d999ca5c303eeb8394e34a36c9d27e3c33f9de8c4"}}