{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:MUV4OA6OOWM6D3E7FAPJKV5MU2","short_pith_number":"pith:MUV4OA6O","canonical_record":{"source":{"id":"1307.0367","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-07-01T13:46:45Z","cross_cats_sorted":["q-bio.BM"],"title_canon_sha256":"2709d5f342d8d6746a9516eab61026fbd17ee1b816146453e55907161eb973a0","abstract_canon_sha256":"4eed31a1bddff85fe61c8e28cfb510f4ed00f12f740bea3b3d954500cef1b6cb"},"schema_version":"1.0"},"canonical_sha256":"652bc703ce7599e1ec9f281e9557aca6aa2cbe2e68e77aef4773ebe3a8d0b16d","source":{"kind":"arxiv","id":"1307.0367","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.0367","created_at":"2026-05-18T03:11:12Z"},{"alias_kind":"arxiv_version","alias_value":"1307.0367v2","created_at":"2026-05-18T03:11:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.0367","created_at":"2026-05-18T03:11:12Z"},{"alias_kind":"pith_short_12","alias_value":"MUV4OA6OOWM6","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MUV4OA6OOWM6D3E7","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MUV4OA6O","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:MUV4OA6OOWM6D3E7FAPJKV5MU2","target":"record","payload":{"canonical_record":{"source":{"id":"1307.0367","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-07-01T13:46:45Z","cross_cats_sorted":["q-bio.BM"],"title_canon_sha256":"2709d5f342d8d6746a9516eab61026fbd17ee1b816146453e55907161eb973a0","abstract_canon_sha256":"4eed31a1bddff85fe61c8e28cfb510f4ed00f12f740bea3b3d954500cef1b6cb"},"schema_version":"1.0"},"canonical_sha256":"652bc703ce7599e1ec9f281e9557aca6aa2cbe2e68e77aef4773ebe3a8d0b16d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:12.849159Z","signature_b64":"RK/OBSCiXy/eUUwMjZmVJlHOfIzzhpHL5TTHRsVdE0YmTeC80Ei/mBrEDM5NRTxDQk0y124MhIRveytqH9LHDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"652bc703ce7599e1ec9f281e9557aca6aa2cbe2e68e77aef4773ebe3a8d0b16d","last_reissued_at":"2026-05-18T03:11:12.848338Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:12.848338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.0367","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":"2026-05-18T03:11:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"91kRvwjxg72J4vqVQKQDvZU5sM711h0Gjgds/NBLSA7IYIFz6UCVfXSwZ3F3vQgECXpifgEnW8biolyt8bZ3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:13:22.671533Z"},"content_sha256":"4e627fbf4a403d5a8a5bcc9e37cd2e5f1113b8f13c05e60de0c63e47a37d7ece","schema_version":"1.0","event_id":"sha256:4e627fbf4a403d5a8a5bcc9e37cd2e5f1113b8f13c05e60de0c63e47a37d7ece"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:MUV4OA6OOWM6D3E7FAPJKV5MU2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Monolayer Spontaneous Curvature of Raft-Forming Membrane Lipids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.BM"],"primary_cat":"cond-mat.soft","authors_text":"Benjamin Kollmitzer, Georg Pabst, Michael Rappolt, Peter Heftberger","submitted_at":"2013-07-01T13:46:45Z","abstract_excerpt":"Monolayer spontaneous curvatures for cholesterol, DOPE, POPE, DOPC, DPPC, DSPC, POPC, SOPC, and egg sphingomyelin were obtained using small-angle X-ray scattering (SAXS) on inverted hexagonal phases (HII). Spontaneous curvatures of bilayer forming lipids were estimated by adding controlled amounts to a HII forming template following previously established protocols. Spontanous curvatures of both phosphatidylethanolamines and cholesterol were found to be at least a factor of two more negative than those of phosphatidylcholines, whose J0 are closer to zero. Interestingly, a significant positive "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.0367","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":"2026-05-18T03:11:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IrBQtHqbJH69dB2A1fQapmt9LBDBvBB0dBfL7KyZe8Y3vWSiJNAfbpUuafdYp3UYpYbAxmK6C1is67YGn0ZUBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:13:22.672227Z"},"content_sha256":"dac882f801167a0b85999bd28aafe1366a4491d5b45f4eca88c1b114a2984a5e","schema_version":"1.0","event_id":"sha256:dac882f801167a0b85999bd28aafe1366a4491d5b45f4eca88c1b114a2984a5e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2/bundle.json","state_url":"https://pith.science/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2/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":"2026-05-28T19:13:22Z","links":{"resolver":"https://pith.science/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2","bundle":"https://pith.science/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2/bundle.json","state":"https://pith.science/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MUV4OA6OOWM6D3E7FAPJKV5MU2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MUV4OA6OOWM6D3E7FAPJKV5MU2","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":"4eed31a1bddff85fe61c8e28cfb510f4ed00f12f740bea3b3d954500cef1b6cb","cross_cats_sorted":["q-bio.BM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-07-01T13:46:45Z","title_canon_sha256":"2709d5f342d8d6746a9516eab61026fbd17ee1b816146453e55907161eb973a0"},"schema_version":"1.0","source":{"id":"1307.0367","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.0367","created_at":"2026-05-18T03:11:12Z"},{"alias_kind":"arxiv_version","alias_value":"1307.0367v2","created_at":"2026-05-18T03:11:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.0367","created_at":"2026-05-18T03:11:12Z"},{"alias_kind":"pith_short_12","alias_value":"MUV4OA6OOWM6","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MUV4OA6OOWM6D3E7","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MUV4OA6O","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:dac882f801167a0b85999bd28aafe1366a4491d5b45f4eca88c1b114a2984a5e","target":"graph","created_at":"2026-05-18T03:11:12Z","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":"Monolayer spontaneous curvatures for cholesterol, DOPE, POPE, DOPC, DPPC, DSPC, POPC, SOPC, and egg sphingomyelin were obtained using small-angle X-ray scattering (SAXS) on inverted hexagonal phases (HII). Spontaneous curvatures of bilayer forming lipids were estimated by adding controlled amounts to a HII forming template following previously established protocols. Spontanous curvatures of both phosphatidylethanolamines and cholesterol were found to be at least a factor of two more negative than those of phosphatidylcholines, whose J0 are closer to zero. Interestingly, a significant positive ","authors_text":"Benjamin Kollmitzer, Georg Pabst, Michael Rappolt, Peter Heftberger","cross_cats":["q-bio.BM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-07-01T13:46:45Z","title":"Monolayer Spontaneous Curvature of Raft-Forming Membrane Lipids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.0367","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":"sha256:4e627fbf4a403d5a8a5bcc9e37cd2e5f1113b8f13c05e60de0c63e47a37d7ece","target":"record","created_at":"2026-05-18T03:11:12Z","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":"4eed31a1bddff85fe61c8e28cfb510f4ed00f12f740bea3b3d954500cef1b6cb","cross_cats_sorted":["q-bio.BM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-07-01T13:46:45Z","title_canon_sha256":"2709d5f342d8d6746a9516eab61026fbd17ee1b816146453e55907161eb973a0"},"schema_version":"1.0","source":{"id":"1307.0367","kind":"arxiv","version":2}},"canonical_sha256":"652bc703ce7599e1ec9f281e9557aca6aa2cbe2e68e77aef4773ebe3a8d0b16d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"652bc703ce7599e1ec9f281e9557aca6aa2cbe2e68e77aef4773ebe3a8d0b16d","first_computed_at":"2026-05-18T03:11:12.848338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:12.848338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RK/OBSCiXy/eUUwMjZmVJlHOfIzzhpHL5TTHRsVdE0YmTeC80Ei/mBrEDM5NRTxDQk0y124MhIRveytqH9LHDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:12.849159Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.0367","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e627fbf4a403d5a8a5bcc9e37cd2e5f1113b8f13c05e60de0c63e47a37d7ece","sha256:dac882f801167a0b85999bd28aafe1366a4491d5b45f4eca88c1b114a2984a5e"],"state_sha256":"ca48b7115aa732b2267e384b4cb5202d93fb878ce7a4d268fa9361bfc521a72f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tbSNLhg4xmVZ1vDniGTZijmb9lKsYFV92e/7BKG2NgEzAwl+S/ta6q4IjbENfFWDendoE1JYpJfR/pS6ONk2CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T19:13:22.675873Z","bundle_sha256":"38c99365f1f9d670aec171ed5e90be1b5d6a9867cabf55c57c489c0bebe7e287"}}