{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:HOQEGAICXSFFDE3Z73TZEDNJHE","short_pith_number":"pith:HOQEGAIC","canonical_record":{"source":{"id":"1709.02374","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-07T17:51:15Z","cross_cats_sorted":[],"title_canon_sha256":"92a3d5c6ca25c69231bc3e841f98d0adbf5d38ac0b8057e6c84d51835074ed9b","abstract_canon_sha256":"6d2b0d1b584235a421351896fd399f711e935bde12b13238dbd9adc9c81f09be"},"schema_version":"1.0"},"canonical_sha256":"3ba0430102bc8a519379fee7920da93919991aed648454cf94016b394074a2ac","source":{"kind":"arxiv","id":"1709.02374","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02374","created_at":"2026-05-18T00:15:21Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02374v1","created_at":"2026-05-18T00:15:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02374","created_at":"2026-05-18T00:15:21Z"},{"alias_kind":"pith_short_12","alias_value":"HOQEGAICXSFF","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"HOQEGAICXSFFDE3Z","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"HOQEGAIC","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:HOQEGAICXSFFDE3Z73TZEDNJHE","target":"record","payload":{"canonical_record":{"source":{"id":"1709.02374","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-07T17:51:15Z","cross_cats_sorted":[],"title_canon_sha256":"92a3d5c6ca25c69231bc3e841f98d0adbf5d38ac0b8057e6c84d51835074ed9b","abstract_canon_sha256":"6d2b0d1b584235a421351896fd399f711e935bde12b13238dbd9adc9c81f09be"},"schema_version":"1.0"},"canonical_sha256":"3ba0430102bc8a519379fee7920da93919991aed648454cf94016b394074a2ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:21.135092Z","signature_b64":"qY5GT51B1QbAmXLN8sWQd2PxCQxMkYR74sCiu5olGWO8rkUTyymJQXV3V8pUJATBQoZ4FSpXYVIiPDWaBiy0Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3ba0430102bc8a519379fee7920da93919991aed648454cf94016b394074a2ac","last_reissued_at":"2026-05-18T00:15:21.134472Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:21.134472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.02374","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":"2026-05-18T00:15:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ib6nO3UQ7D4zipK4I9o8GhdjC5u37Si5tpuX0cXFDikfUGe64ktUkmc+aVV1Qbet44ImvomL3+RdWSoxB3HQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T03:54:59.201737Z"},"content_sha256":"51282d5e2c52fcef12cafd9e8305cfc9bbe0d849e53c0b168e8ed818281adb15","schema_version":"1.0","event_id":"sha256:51282d5e2c52fcef12cafd9e8305cfc9bbe0d849e53c0b168e8ed818281adb15"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:HOQEGAICXSFFDE3Z73TZEDNJHE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonreciprocal transmission of sound in viscous fluid with asymmetric scatterers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"A.A. Krokhin, A. Bozhko, A. Neogi, E. Walker, Hyeonu Hu, Jaeyung Ju, J. Arriaga","submitted_at":"2017-09-07T17:51:15Z","abstract_excerpt":"Two common concepts of nonreciprocity in sound propagation are based on nonlinear effects [1, 2] and on local circulation of fluid [3, 4]. They originate from two known methods of breaking a time reversal symmetry, that is necessary for observation of nonreciprocal effects. Both concepts require additional devices to be installed with their own power sources. Recently it was demonstrated that acoustical losses may serve as a source of T-symmetry violation, thus leading to nonreciprocity in reflection of sound from gradient-index metasurface [5]. Here, we explore viscosity of fluid as a natural"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02374","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":"2026-05-18T00:15:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lLSa6Oa6wviNLYVtNxqXd2Bvtw3UCWjfR7lBfOEdWr4jusgFHeCm3mJ9D9Xm/DRFYFfWsguhtHRGiKp/RBdbAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T03:54:59.202339Z"},"content_sha256":"6aa835988e4985c0abc50c0be4b9d035c10f3083d028a42694005e3f1b89ebaf","schema_version":"1.0","event_id":"sha256:6aa835988e4985c0abc50c0be4b9d035c10f3083d028a42694005e3f1b89ebaf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HOQEGAICXSFFDE3Z73TZEDNJHE/bundle.json","state_url":"https://pith.science/pith/HOQEGAICXSFFDE3Z73TZEDNJHE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HOQEGAICXSFFDE3Z73TZEDNJHE/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":"2026-06-06T03:54:59Z","links":{"resolver":"https://pith.science/pith/HOQEGAICXSFFDE3Z73TZEDNJHE","bundle":"https://pith.science/pith/HOQEGAICXSFFDE3Z73TZEDNJHE/bundle.json","state":"https://pith.science/pith/HOQEGAICXSFFDE3Z73TZEDNJHE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HOQEGAICXSFFDE3Z73TZEDNJHE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:HOQEGAICXSFFDE3Z73TZEDNJHE","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":"6d2b0d1b584235a421351896fd399f711e935bde12b13238dbd9adc9c81f09be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-07T17:51:15Z","title_canon_sha256":"92a3d5c6ca25c69231bc3e841f98d0adbf5d38ac0b8057e6c84d51835074ed9b"},"schema_version":"1.0","source":{"id":"1709.02374","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02374","created_at":"2026-05-18T00:15:21Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02374v1","created_at":"2026-05-18T00:15:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02374","created_at":"2026-05-18T00:15:21Z"},{"alias_kind":"pith_short_12","alias_value":"HOQEGAICXSFF","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"HOQEGAICXSFFDE3Z","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"HOQEGAIC","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:6aa835988e4985c0abc50c0be4b9d035c10f3083d028a42694005e3f1b89ebaf","target":"graph","created_at":"2026-05-18T00:15:21Z","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":"Two common concepts of nonreciprocity in sound propagation are based on nonlinear effects [1, 2] and on local circulation of fluid [3, 4]. They originate from two known methods of breaking a time reversal symmetry, that is necessary for observation of nonreciprocal effects. Both concepts require additional devices to be installed with their own power sources. Recently it was demonstrated that acoustical losses may serve as a source of T-symmetry violation, thus leading to nonreciprocity in reflection of sound from gradient-index metasurface [5]. Here, we explore viscosity of fluid as a natural","authors_text":"A.A. Krokhin, A. Bozhko, A. Neogi, E. Walker, Hyeonu Hu, Jaeyung Ju, J. Arriaga","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-07T17:51:15Z","title":"Nonreciprocal transmission of sound in viscous fluid with asymmetric scatterers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02374","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":"sha256:51282d5e2c52fcef12cafd9e8305cfc9bbe0d849e53c0b168e8ed818281adb15","target":"record","created_at":"2026-05-18T00:15:21Z","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":"6d2b0d1b584235a421351896fd399f711e935bde12b13238dbd9adc9c81f09be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-09-07T17:51:15Z","title_canon_sha256":"92a3d5c6ca25c69231bc3e841f98d0adbf5d38ac0b8057e6c84d51835074ed9b"},"schema_version":"1.0","source":{"id":"1709.02374","kind":"arxiv","version":1}},"canonical_sha256":"3ba0430102bc8a519379fee7920da93919991aed648454cf94016b394074a2ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3ba0430102bc8a519379fee7920da93919991aed648454cf94016b394074a2ac","first_computed_at":"2026-05-18T00:15:21.134472Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:21.134472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qY5GT51B1QbAmXLN8sWQd2PxCQxMkYR74sCiu5olGWO8rkUTyymJQXV3V8pUJATBQoZ4FSpXYVIiPDWaBiy0Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:21.135092Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.02374","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51282d5e2c52fcef12cafd9e8305cfc9bbe0d849e53c0b168e8ed818281adb15","sha256:6aa835988e4985c0abc50c0be4b9d035c10f3083d028a42694005e3f1b89ebaf"],"state_sha256":"0cc83803c75a778eb4aad8418930204e37e159a18447cecc46e61b4f841688d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d+cRM1QMCJppIiEU8ttcoRQgSsBEh8xrSQpjuzyAG1EV74yANGt34sPnfHGmFICpolkwHlNc6+Xo77te6rhNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T03:54:59.206019Z","bundle_sha256":"28f8938ae94b56361ff536b78e45375e275725c63ed0b9a65f091ced2729be36"}}