{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:IT5ROWCRKT7D5N6FHXFUI34Q6K","short_pith_number":"pith:IT5ROWCR","canonical_record":{"source":{"id":"1707.07208","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-22T19:59:34Z","cross_cats_sorted":[],"title_canon_sha256":"0d854f09004788d5d6500e647a99ebe0e86be3f95ee393f31f6b3024419c2b0c","abstract_canon_sha256":"74b85366bac3c9c514a7d10e2a6be74672196d919241c7e2c7f77bb148c79e4b"},"schema_version":"1.0"},"canonical_sha256":"44fb17585154fe3eb7c53dcb446f90f2a960bc8a78a4e37f0af19a4e147f0aa3","source":{"kind":"arxiv","id":"1707.07208","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07208","created_at":"2026-05-18T00:32:08Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07208v1","created_at":"2026-05-18T00:32:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07208","created_at":"2026-05-18T00:32:08Z"},{"alias_kind":"pith_short_12","alias_value":"IT5ROWCRKT7D","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IT5ROWCRKT7D5N6F","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IT5ROWCR","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:IT5ROWCRKT7D5N6FHXFUI34Q6K","target":"record","payload":{"canonical_record":{"source":{"id":"1707.07208","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-22T19:59:34Z","cross_cats_sorted":[],"title_canon_sha256":"0d854f09004788d5d6500e647a99ebe0e86be3f95ee393f31f6b3024419c2b0c","abstract_canon_sha256":"74b85366bac3c9c514a7d10e2a6be74672196d919241c7e2c7f77bb148c79e4b"},"schema_version":"1.0"},"canonical_sha256":"44fb17585154fe3eb7c53dcb446f90f2a960bc8a78a4e37f0af19a4e147f0aa3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:08.404297Z","signature_b64":"5fRTZFSuzPX9kw3XhMJHDxGnqYoW/u02vnQWlCtWG6shSgK7+Om9aEkQz1NInK+zn3a8tmT0pVGo9OZ+FceHDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"44fb17585154fe3eb7c53dcb446f90f2a960bc8a78a4e37f0af19a4e147f0aa3","last_reissued_at":"2026-05-18T00:32:08.403605Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:08.403605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.07208","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":"2026-05-18T00:32:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DPPtROtoTI4SxOfQ8y+Gvg20Rdu+haSnbIx2W8NxWMbCCwnbtyugOYaIx1W8eNoGPnZu/fa8pmd+3jsae8w+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:55:43.391592Z"},"content_sha256":"086715468ad74f20cf190dd6b58a33eb4c84b260b788ce65c9938db2861c4479","schema_version":"1.0","event_id":"sha256:086715468ad74f20cf190dd6b58a33eb4c84b260b788ce65c9938db2861c4479"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:IT5ROWCRKT7D5N6FHXFUI34Q6K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Subwavelength sound screening by coupling space-coiled Fabry-Perot resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"A. Elayouch, A. Khelif, M. Addouche, M. Farhat","submitted_at":"2017-07-22T19:59:34Z","abstract_excerpt":"We explore broadband and omnidirectional low frequency sound screening based on locally resonant acoustic metamaterials. We show that the coupling of different resonant modes supported by Fabry-Perot cavities can efficiently generate asymmetric lineshapes in the transmission spectrum, leading to a broadband sound opacity. The Fabry-Perot cavities are space-coiled in order to shift the resonant modes under the diffraction edge, which guaranty the opacity band for all incident angles. Indeed, the deep subwavelength feature of the cavities leads to avoid diffraction that have been proved to be th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07208","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":"2026-05-18T00:32:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Y4KRjRQwMll+3wRzVW9elFHgcYc9sSq8aZBSpB3GkfJy6sAAif7WS3cC07m4DSoZa/YroFWWI/eQBsBCm0GDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:55:43.391946Z"},"content_sha256":"9c84eb40b69adbc5c49f8a5ccbcf4572d57a72a1a9f73d02cf6a6cecb6447fba","schema_version":"1.0","event_id":"sha256:9c84eb40b69adbc5c49f8a5ccbcf4572d57a72a1a9f73d02cf6a6cecb6447fba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K/bundle.json","state_url":"https://pith.science/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K/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":"2026-05-27T04:55:43Z","links":{"resolver":"https://pith.science/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K","bundle":"https://pith.science/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K/bundle.json","state":"https://pith.science/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IT5ROWCRKT7D5N6FHXFUI34Q6K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IT5ROWCRKT7D5N6FHXFUI34Q6K","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":"74b85366bac3c9c514a7d10e2a6be74672196d919241c7e2c7f77bb148c79e4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-22T19:59:34Z","title_canon_sha256":"0d854f09004788d5d6500e647a99ebe0e86be3f95ee393f31f6b3024419c2b0c"},"schema_version":"1.0","source":{"id":"1707.07208","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07208","created_at":"2026-05-18T00:32:08Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07208v1","created_at":"2026-05-18T00:32:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07208","created_at":"2026-05-18T00:32:08Z"},{"alias_kind":"pith_short_12","alias_value":"IT5ROWCRKT7D","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IT5ROWCRKT7D5N6F","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IT5ROWCR","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:9c84eb40b69adbc5c49f8a5ccbcf4572d57a72a1a9f73d02cf6a6cecb6447fba","target":"graph","created_at":"2026-05-18T00:32:08Z","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":"We explore broadband and omnidirectional low frequency sound screening based on locally resonant acoustic metamaterials. We show that the coupling of different resonant modes supported by Fabry-Perot cavities can efficiently generate asymmetric lineshapes in the transmission spectrum, leading to a broadband sound opacity. The Fabry-Perot cavities are space-coiled in order to shift the resonant modes under the diffraction edge, which guaranty the opacity band for all incident angles. Indeed, the deep subwavelength feature of the cavities leads to avoid diffraction that have been proved to be th","authors_text":"A. Elayouch, A. Khelif, M. Addouche, M. Farhat","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-22T19:59:34Z","title":"Subwavelength sound screening by coupling space-coiled Fabry-Perot resonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07208","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":"sha256:086715468ad74f20cf190dd6b58a33eb4c84b260b788ce65c9938db2861c4479","target":"record","created_at":"2026-05-18T00:32:08Z","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":"74b85366bac3c9c514a7d10e2a6be74672196d919241c7e2c7f77bb148c79e4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-22T19:59:34Z","title_canon_sha256":"0d854f09004788d5d6500e647a99ebe0e86be3f95ee393f31f6b3024419c2b0c"},"schema_version":"1.0","source":{"id":"1707.07208","kind":"arxiv","version":1}},"canonical_sha256":"44fb17585154fe3eb7c53dcb446f90f2a960bc8a78a4e37f0af19a4e147f0aa3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"44fb17585154fe3eb7c53dcb446f90f2a960bc8a78a4e37f0af19a4e147f0aa3","first_computed_at":"2026-05-18T00:32:08.403605Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:08.403605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5fRTZFSuzPX9kw3XhMJHDxGnqYoW/u02vnQWlCtWG6shSgK7+Om9aEkQz1NInK+zn3a8tmT0pVGo9OZ+FceHDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:08.404297Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.07208","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:086715468ad74f20cf190dd6b58a33eb4c84b260b788ce65c9938db2861c4479","sha256:9c84eb40b69adbc5c49f8a5ccbcf4572d57a72a1a9f73d02cf6a6cecb6447fba"],"state_sha256":"f3b088d354da2e507a30b16ca2869a6c83a451d5a8114324ea4287dd44b135c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FtMTrIDrxYkhsANpKD5bO+f6YN8u2Viu+0X8w6aqI6YgLEB+WLpBzO08jJ1q4hB19pb3JN9XoxfN2Vnm+j0yAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:55:43.395193Z","bundle_sha256":"7a52985fede15190425e823bfcb82545368805b24b14b839c260cc2c4578939f"}}