{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PL5VQGUK6ZDO5AS4KFUW6QKBLE","short_pith_number":"pith:PL5VQGUK","canonical_record":{"source":{"id":"1506.09151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-06-30T16:48:48Z","cross_cats_sorted":[],"title_canon_sha256":"b530970a4a6dfd14188984df8e784ad7379b98801e056cfba8f14c298cee9847","abstract_canon_sha256":"27b5af44c0ecbffda7d6a58ec4db812aa42dbb18c2cb455d288131c83ed8c4d2"},"schema_version":"1.0"},"canonical_sha256":"7afb581a8af646ee825c51696f41415918371f58edef0e654b4459eacde88074","source":{"kind":"arxiv","id":"1506.09151","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.09151","created_at":"2026-05-18T00:37:01Z"},{"alias_kind":"arxiv_version","alias_value":"1506.09151v1","created_at":"2026-05-18T00:37:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.09151","created_at":"2026-05-18T00:37:01Z"},{"alias_kind":"pith_short_12","alias_value":"PL5VQGUK6ZDO","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PL5VQGUK6ZDO5AS4","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PL5VQGUK","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PL5VQGUK6ZDO5AS4KFUW6QKBLE","target":"record","payload":{"canonical_record":{"source":{"id":"1506.09151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-06-30T16:48:48Z","cross_cats_sorted":[],"title_canon_sha256":"b530970a4a6dfd14188984df8e784ad7379b98801e056cfba8f14c298cee9847","abstract_canon_sha256":"27b5af44c0ecbffda7d6a58ec4db812aa42dbb18c2cb455d288131c83ed8c4d2"},"schema_version":"1.0"},"canonical_sha256":"7afb581a8af646ee825c51696f41415918371f58edef0e654b4459eacde88074","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:01.936957Z","signature_b64":"Rs6JlIDiMn7uTDz84QNXsC/DoEqNbnZM/xCqTCU2rawkI9YF3eNAT23ungeut1R7P9fIaVzd6xfk54NQPC6lBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7afb581a8af646ee825c51696f41415918371f58edef0e654b4459eacde88074","last_reissued_at":"2026-05-18T00:37:01.936451Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:01.936451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.09151","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":"2026-05-18T00:37:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a4T2xmEGLqB6XTr1KHvd5C/KGpQsZamgjiNpTAQ40k5J6VUad4ISVjtiynO5GFm8Adq3RgD0xgwO05wupFHrBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T12:06:54.301817Z"},"content_sha256":"5fe3b21ec5e6f2f9082ad3f018fc539a3e757f5dd29ee596359406ba86e56356","schema_version":"1.0","event_id":"sha256:5fe3b21ec5e6f2f9082ad3f018fc539a3e757f5dd29ee596359406ba86e56356"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PL5VQGUK6ZDO5AS4KFUW6QKBLE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced acoustic transmission through a slanted grating","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.comp-ph","authors_text":"Andrew N. Norris, Xiaoshi Su","submitted_at":"2015-06-30T16:48:48Z","abstract_excerpt":"It is known that an acoustic wave incident on an infinite array of aligned rectangular blocks of a different acoustic material exhibits total transmission if certain conditions are met [1] which relate the unique \"intromission\" angle of incidence with geometric and material properties of the slab. This extraordinary acoustic transmission phenomenon holds for any slab thickness, making it analogous to a Brewster effect in optics, and is independent of frequency as long as the slab microstructure is sub-wavelength in the length-wise direction. Here we show that the enhanced transmission effect i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.09151","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":"2026-05-18T00:37:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5rFNM+eQ2QKDb3RmycneXBRmR+UuOVoLPDgDk3Ki09DzzKPYeokFYGD/44Hy/MSd8Tpy4TgZHlTRvsq4A5bKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T12:06:54.302158Z"},"content_sha256":"2f2c56f4184b3c5779feb50e71fab337db050b9d8725c23f6361282bf50adb18","schema_version":"1.0","event_id":"sha256:2f2c56f4184b3c5779feb50e71fab337db050b9d8725c23f6361282bf50adb18"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE/bundle.json","state_url":"https://pith.science/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE/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":"2026-06-30T12:06:54Z","links":{"resolver":"https://pith.science/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE","bundle":"https://pith.science/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE/bundle.json","state":"https://pith.science/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PL5VQGUK6ZDO5AS4KFUW6QKBLE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PL5VQGUK6ZDO5AS4KFUW6QKBLE","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":"27b5af44c0ecbffda7d6a58ec4db812aa42dbb18c2cb455d288131c83ed8c4d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-06-30T16:48:48Z","title_canon_sha256":"b530970a4a6dfd14188984df8e784ad7379b98801e056cfba8f14c298cee9847"},"schema_version":"1.0","source":{"id":"1506.09151","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.09151","created_at":"2026-05-18T00:37:01Z"},{"alias_kind":"arxiv_version","alias_value":"1506.09151v1","created_at":"2026-05-18T00:37:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.09151","created_at":"2026-05-18T00:37:01Z"},{"alias_kind":"pith_short_12","alias_value":"PL5VQGUK6ZDO","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PL5VQGUK6ZDO5AS4","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PL5VQGUK","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:2f2c56f4184b3c5779feb50e71fab337db050b9d8725c23f6361282bf50adb18","target":"graph","created_at":"2026-05-18T00:37:01Z","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":"It is known that an acoustic wave incident on an infinite array of aligned rectangular blocks of a different acoustic material exhibits total transmission if certain conditions are met [1] which relate the unique \"intromission\" angle of incidence with geometric and material properties of the slab. This extraordinary acoustic transmission phenomenon holds for any slab thickness, making it analogous to a Brewster effect in optics, and is independent of frequency as long as the slab microstructure is sub-wavelength in the length-wise direction. Here we show that the enhanced transmission effect i","authors_text":"Andrew N. Norris, Xiaoshi Su","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-06-30T16:48:48Z","title":"Enhanced acoustic transmission through a slanted grating"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.09151","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":"sha256:5fe3b21ec5e6f2f9082ad3f018fc539a3e757f5dd29ee596359406ba86e56356","target":"record","created_at":"2026-05-18T00:37:01Z","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":"27b5af44c0ecbffda7d6a58ec4db812aa42dbb18c2cb455d288131c83ed8c4d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-06-30T16:48:48Z","title_canon_sha256":"b530970a4a6dfd14188984df8e784ad7379b98801e056cfba8f14c298cee9847"},"schema_version":"1.0","source":{"id":"1506.09151","kind":"arxiv","version":1}},"canonical_sha256":"7afb581a8af646ee825c51696f41415918371f58edef0e654b4459eacde88074","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7afb581a8af646ee825c51696f41415918371f58edef0e654b4459eacde88074","first_computed_at":"2026-05-18T00:37:01.936451Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:37:01.936451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Rs6JlIDiMn7uTDz84QNXsC/DoEqNbnZM/xCqTCU2rawkI9YF3eNAT23ungeut1R7P9fIaVzd6xfk54NQPC6lBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:37:01.936957Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.09151","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fe3b21ec5e6f2f9082ad3f018fc539a3e757f5dd29ee596359406ba86e56356","sha256:2f2c56f4184b3c5779feb50e71fab337db050b9d8725c23f6361282bf50adb18"],"state_sha256":"9335f48868ada74335502413c5adcb43949dff8f3e110b01f7be254c9889849d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GF8DyoGKssHDRbChET9PSrGgG9UcqdYE9SB0+gIIqc0fABg+Lv8OrtsloXC8HqceND6xIsphhab/gH4wsQFyDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T12:06:54.304016Z","bundle_sha256":"330108545b7be24800e338669f96d0b97f15f7bd133a244a6434b2bea6496c72"}}