{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JML3OWWZXPBEEPZ775V72COXRF","short_pith_number":"pith:JML3OWWZ","canonical_record":{"source":{"id":"1405.1788","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2014-05-08T01:05:05Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.soft","nlin.PS"],"title_canon_sha256":"4f202e245e584819cfd3fa3d47966c9d79d8a884aaf83b8e687a0db331b4f8cb","abstract_canon_sha256":"b06a6902c09d846fca3944ddb3a613a3a4e2e00209456ecf3c882df25b8b8fc0"},"schema_version":"1.0"},"canonical_sha256":"4b17b75ad9bbc2423f3fff6bfd09d7895f0bdbf459c0e0a4a6f2db989faf5a73","source":{"kind":"arxiv","id":"1405.1788","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.1788","created_at":"2026-05-18T02:45:31Z"},{"alias_kind":"arxiv_version","alias_value":"1405.1788v1","created_at":"2026-05-18T02:45:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.1788","created_at":"2026-05-18T02:45:31Z"},{"alias_kind":"pith_short_12","alias_value":"JML3OWWZXPBE","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JML3OWWZXPBEEPZ7","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JML3OWWZ","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JML3OWWZXPBEEPZ775V72COXRF","target":"record","payload":{"canonical_record":{"source":{"id":"1405.1788","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2014-05-08T01:05:05Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.soft","nlin.PS"],"title_canon_sha256":"4f202e245e584819cfd3fa3d47966c9d79d8a884aaf83b8e687a0db331b4f8cb","abstract_canon_sha256":"b06a6902c09d846fca3944ddb3a613a3a4e2e00209456ecf3c882df25b8b8fc0"},"schema_version":"1.0"},"canonical_sha256":"4b17b75ad9bbc2423f3fff6bfd09d7895f0bdbf459c0e0a4a6f2db989faf5a73","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:45:31.335177Z","signature_b64":"vXW3kThj8I3VAKO0b3Suk9xWldINeWJNHQXjQlYJTkAs7LHD930eWL3JTEM+vrPR+lv4esus2mboYmFcvCv7Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b17b75ad9bbc2423f3fff6bfd09d7895f0bdbf459c0e0a4a6f2db989faf5a73","last_reissued_at":"2026-05-18T02:45:31.334487Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:45:31.334487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.1788","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":"2026-05-18T02:45:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z0RFv5nC5q42IgD5vtVUKBQR4G324eDF6PNM0G5b6Qsqm+QfxdoBMeAvkWqA7KIndGI1U86j434GgigjRAEqAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T04:49:20.441627Z"},"content_sha256":"1be8d5d897d719884cbcd73ec9fc23753cd2741e38c3fcf5c7896413a3b08801","schema_version":"1.0","event_id":"sha256:1be8d5d897d719884cbcd73ec9fc23753cd2741e38c3fcf5c7896413a3b08801"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JML3OWWZXPBEEPZ775V72COXRF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for 2D Solitary Sound Waves in a Lipid Controlled Interface and its Biological Implications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.soft","nlin.PS"],"primary_cat":"physics.bio-ph","authors_text":"Matthias F. Schneider (Boston University), Shamit Shrivastava","submitted_at":"2014-05-08T01:05:05Z","abstract_excerpt":"Biological membranes by virtue of their elastic properties should be capable of propagating localized perturbations analogous to sound waves. However, the existence and the possible role of such waves in communication in biology remains unexplored. Here we report the first observations of 2D solitary elastic pulses in lipid interfaces, excited mechanically and detected by FRET. We demonstrate that the nonlinearity near a maximum in the susceptibility of the lipid monolayer results in solitary pulses that also have a threshold for excitation. These experiments clearly demonstrate that the state"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.1788","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":"2026-05-18T02:45:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XvVgspAoBWK+gal1JBCrCc2JCXwtWS+LB+P9hoU/NTw/HpRMn/+q/8XZcXgp/FpF5vr1RxZUl139LIx3AMZDCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T04:49:20.441990Z"},"content_sha256":"2719fea969395a1625b22a2fedf4d279ad1a9f03950ff83d63318b6903d67dba","schema_version":"1.0","event_id":"sha256:2719fea969395a1625b22a2fedf4d279ad1a9f03950ff83d63318b6903d67dba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JML3OWWZXPBEEPZ775V72COXRF/bundle.json","state_url":"https://pith.science/pith/JML3OWWZXPBEEPZ775V72COXRF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JML3OWWZXPBEEPZ775V72COXRF/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":"2026-06-24T04:49:20Z","links":{"resolver":"https://pith.science/pith/JML3OWWZXPBEEPZ775V72COXRF","bundle":"https://pith.science/pith/JML3OWWZXPBEEPZ775V72COXRF/bundle.json","state":"https://pith.science/pith/JML3OWWZXPBEEPZ775V72COXRF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JML3OWWZXPBEEPZ775V72COXRF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JML3OWWZXPBEEPZ775V72COXRF","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":"b06a6902c09d846fca3944ddb3a613a3a4e2e00209456ecf3c882df25b8b8fc0","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.soft","nlin.PS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2014-05-08T01:05:05Z","title_canon_sha256":"4f202e245e584819cfd3fa3d47966c9d79d8a884aaf83b8e687a0db331b4f8cb"},"schema_version":"1.0","source":{"id":"1405.1788","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.1788","created_at":"2026-05-18T02:45:31Z"},{"alias_kind":"arxiv_version","alias_value":"1405.1788v1","created_at":"2026-05-18T02:45:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.1788","created_at":"2026-05-18T02:45:31Z"},{"alias_kind":"pith_short_12","alias_value":"JML3OWWZXPBE","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JML3OWWZXPBEEPZ7","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JML3OWWZ","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:2719fea969395a1625b22a2fedf4d279ad1a9f03950ff83d63318b6903d67dba","target":"graph","created_at":"2026-05-18T02:45:31Z","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":"Biological membranes by virtue of their elastic properties should be capable of propagating localized perturbations analogous to sound waves. However, the existence and the possible role of such waves in communication in biology remains unexplored. Here we report the first observations of 2D solitary elastic pulses in lipid interfaces, excited mechanically and detected by FRET. We demonstrate that the nonlinearity near a maximum in the susceptibility of the lipid monolayer results in solitary pulses that also have a threshold for excitation. These experiments clearly demonstrate that the state","authors_text":"Matthias F. Schneider (Boston University), Shamit Shrivastava","cross_cats":["cond-mat.mes-hall","cond-mat.soft","nlin.PS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2014-05-08T01:05:05Z","title":"Evidence for 2D Solitary Sound Waves in a Lipid Controlled Interface and its Biological Implications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.1788","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":"sha256:1be8d5d897d719884cbcd73ec9fc23753cd2741e38c3fcf5c7896413a3b08801","target":"record","created_at":"2026-05-18T02:45:31Z","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":"b06a6902c09d846fca3944ddb3a613a3a4e2e00209456ecf3c882df25b8b8fc0","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.soft","nlin.PS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2014-05-08T01:05:05Z","title_canon_sha256":"4f202e245e584819cfd3fa3d47966c9d79d8a884aaf83b8e687a0db331b4f8cb"},"schema_version":"1.0","source":{"id":"1405.1788","kind":"arxiv","version":1}},"canonical_sha256":"4b17b75ad9bbc2423f3fff6bfd09d7895f0bdbf459c0e0a4a6f2db989faf5a73","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b17b75ad9bbc2423f3fff6bfd09d7895f0bdbf459c0e0a4a6f2db989faf5a73","first_computed_at":"2026-05-18T02:45:31.334487Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:45:31.334487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vXW3kThj8I3VAKO0b3Suk9xWldINeWJNHQXjQlYJTkAs7LHD930eWL3JTEM+vrPR+lv4esus2mboYmFcvCv7Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T02:45:31.335177Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.1788","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1be8d5d897d719884cbcd73ec9fc23753cd2741e38c3fcf5c7896413a3b08801","sha256:2719fea969395a1625b22a2fedf4d279ad1a9f03950ff83d63318b6903d67dba"],"state_sha256":"a1c61f9ecb85f6c7a3c7ae2b5a4d5f3aeca7bc7a30bee1ec936fd25995889036"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IoIJXmWpLZWt9/Lx3GwCJa/d+Cn51xkkTJavww3G1c/Nj7xoM9dEfpTOpplZHF6L9e6MC+ANuEtV1POjmxmvCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T04:49:20.444274Z","bundle_sha256":"a724d48c0ac6f89cf14b795bb441eaf04c0a0957e828f3c4fea1edd57480f4a9"}}