{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:BCCQQAMXC4LOEA5FX3CHXK5BUE","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":"91c3312152a9af262db5bed3f50b0015305649309c81da51bddee05dfd5514dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-30T17:51:29Z","title_canon_sha256":"9b82df256226672a7078f90607a86ac6371812d3b1f29e7b8eda6d21bed54e41"},"schema_version":"1.0","source":{"id":"2606.32021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.32021","created_at":"2026-07-01T02:17:47Z"},{"alias_kind":"arxiv_version","alias_value":"2606.32021v1","created_at":"2026-07-01T02:17:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.32021","created_at":"2026-07-01T02:17:47Z"},{"alias_kind":"pith_short_12","alias_value":"BCCQQAMXC4LO","created_at":"2026-07-01T02:17:47Z"},{"alias_kind":"pith_short_16","alias_value":"BCCQQAMXC4LOEA5F","created_at":"2026-07-01T02:17:47Z"},{"alias_kind":"pith_short_8","alias_value":"BCCQQAMX","created_at":"2026-07-01T02:17:47Z"}],"graph_snapshots":[{"event_id":"sha256:db29d1fc5369e1e6593b467153dbe10b3692957d62b2328e8f2b29f13da36be6","target":"graph","created_at":"2026-07-01T02:17:47Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.32021/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nature has equipped jet-propelled swimmers with flexible nozzles that outperform rigid ones, yet the origin of this advantage has remained unexplained. By tracking where and when energy is exchanged between fluid and structure, three-dimensional numerical simulations resolve the underlying mechanism: a standing-wave response of the nozzle, in which the structure dilates and then recoils synchronously, charging and releasing energy to enhance thrust. Outside of this regime, the structure exhibits a traveling wave response, with expansion and contraction coexisting along the nozzle, reducing the","authors_text":"Francesco Viola, Roberta Santoriello, Vincenzo Citro","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-30T17:51:29Z","title":"Flexibility as a Universal Nature-Inspired Mechanism for Thrust Enhancement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.32021","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":"sha256:3101809e7ecbf5fcb1d871e43e370b6ab0a45e6a66032842622c8570e061fd39","target":"record","created_at":"2026-07-01T02:17:47Z","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":"91c3312152a9af262db5bed3f50b0015305649309c81da51bddee05dfd5514dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-30T17:51:29Z","title_canon_sha256":"9b82df256226672a7078f90607a86ac6371812d3b1f29e7b8eda6d21bed54e41"},"schema_version":"1.0","source":{"id":"2606.32021","kind":"arxiv","version":1}},"canonical_sha256":"08850801971716e203a5bec47baba1a12bfc19775afd2657a619139c917cd89d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08850801971716e203a5bec47baba1a12bfc19775afd2657a619139c917cd89d","first_computed_at":"2026-07-01T02:17:47.506825Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-01T02:17:47.506825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1U0EVlVBWbZuSLEGEBy9sCBOK6kU3v7V2zQ8xI1QTdVRHsScfTXgRjUmx+QgPrS2V9eHOsAEn+bg8dLmYW9JAQ==","signature_status":"signed_v1","signed_at":"2026-07-01T02:17:47.507290Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.32021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3101809e7ecbf5fcb1d871e43e370b6ab0a45e6a66032842622c8570e061fd39","sha256:db29d1fc5369e1e6593b467153dbe10b3692957d62b2328e8f2b29f13da36be6"],"state_sha256":"d7a75930cece28c4a9cc5f2a35d251d314310610a31cdb6db69091272af4bac2"}