{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:IQAYCPX442UAMX76XFOLAITGNK","short_pith_number":"pith:IQAYCPX4","canonical_record":{"source":{"id":"2410.23675","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2024-10-31T06:55:09Z","cross_cats_sorted":[],"title_canon_sha256":"fbaaed7b42afa1f42522476bd21df2673e27a8a21e0ed70884b3aa5d5a4af252","abstract_canon_sha256":"ce5593b3f27f0d00f3e50c2a0eef9e917aba7dddfea11ed16b2627c4ee8217bb"},"schema_version":"1.0"},"canonical_sha256":"4401813efce6a8065ffeb95cb022666aa92ef21918668c1c6e22e82d166806ae","source":{"kind":"arxiv","id":"2410.23675","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.23675","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"arxiv_version","alias_value":"2410.23675v1","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.23675","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"pith_short_12","alias_value":"IQAYCPX442UA","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"pith_short_16","alias_value":"IQAYCPX442UAMX76","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"pith_short_8","alias_value":"IQAYCPX4","created_at":"2026-07-05T09:29:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:IQAYCPX442UAMX76XFOLAITGNK","target":"record","payload":{"canonical_record":{"source":{"id":"2410.23675","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2024-10-31T06:55:09Z","cross_cats_sorted":[],"title_canon_sha256":"fbaaed7b42afa1f42522476bd21df2673e27a8a21e0ed70884b3aa5d5a4af252","abstract_canon_sha256":"ce5593b3f27f0d00f3e50c2a0eef9e917aba7dddfea11ed16b2627c4ee8217bb"},"schema_version":"1.0"},"canonical_sha256":"4401813efce6a8065ffeb95cb022666aa92ef21918668c1c6e22e82d166806ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:29:03.795350Z","signature_b64":"vFxjqX5xM6/GWAliMlLG9UBi4JQP3ndp7AqnMzZs4bLlYlxaSIbb7PTSCb9WLi72BTHLeDF8ynRo2S3QZ6AuDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4401813efce6a8065ffeb95cb022666aa92ef21918668c1c6e22e82d166806ae","last_reissued_at":"2026-07-05T09:29:03.794731Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:29:03.794731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.23675","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":"2026-07-05T09:29:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+6mH7YtK+v9uHP7WY/J1A+DchCCbj+vAW1qXbPSehOm8HO9zzBlAla3xabKq7J0Zvlh1tYbEhtoOskgas5hrAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:38:20.503064Z"},"content_sha256":"a5316aba5843e7fe0c84453aba0cb46e4fa1d8c6c575e12eac63e5642cfe498d","schema_version":"1.0","event_id":"sha256:a5316aba5843e7fe0c84453aba0cb46e4fa1d8c6c575e12eac63e5642cfe498d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:IQAYCPX442UAMX76XFOLAITGNK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Robust orbital-angular-momentum-based underwater acoustic communication with dynamic modal decomposition method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Bingyi Liu, Liulin Li, Zhongyi Guo","submitted_at":"2024-10-31T06:55:09Z","abstract_excerpt":"Recently, acoustic communication employing Orbital Angular Momentum (OAM) opens another avenue for efficient data transmission in aquatic environments. Current topological charge (TC) detection of OAM beams relies on the orthogonality among different-order OAM beams. Such strategy requires data collection from the entire acoustic field, which inevitably reduces the efficiency and increases the bit error rate (BER). To address these challenges, this study proposes a modified Dynamic Modal Decomposition (DMD) method by partially sampling the acoustic field for precise TC detection. Numerical sim"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.23675","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2410.23675/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T09:29:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+MrI3QCH2/fYHmVSG7c00jjn2V7RMGWIP/ZyR/hzn3vOx2H4yD+Qb5Ad3DmXLkEzeXJMatccb3tROi0NRptgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:38:20.503477Z"},"content_sha256":"a4d99ac899ef566e19db74ce1ab1f80b9103e170b72932c47fdbba645192ab53","schema_version":"1.0","event_id":"sha256:a4d99ac899ef566e19db74ce1ab1f80b9103e170b72932c47fdbba645192ab53"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQAYCPX442UAMX76XFOLAITGNK/bundle.json","state_url":"https://pith.science/pith/IQAYCPX442UAMX76XFOLAITGNK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQAYCPX442UAMX76XFOLAITGNK/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":"2026-07-07T14:38:20Z","links":{"resolver":"https://pith.science/pith/IQAYCPX442UAMX76XFOLAITGNK","bundle":"https://pith.science/pith/IQAYCPX442UAMX76XFOLAITGNK/bundle.json","state":"https://pith.science/pith/IQAYCPX442UAMX76XFOLAITGNK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQAYCPX442UAMX76XFOLAITGNK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:IQAYCPX442UAMX76XFOLAITGNK","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":"ce5593b3f27f0d00f3e50c2a0eef9e917aba7dddfea11ed16b2627c4ee8217bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2024-10-31T06:55:09Z","title_canon_sha256":"fbaaed7b42afa1f42522476bd21df2673e27a8a21e0ed70884b3aa5d5a4af252"},"schema_version":"1.0","source":{"id":"2410.23675","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.23675","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"arxiv_version","alias_value":"2410.23675v1","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.23675","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"pith_short_12","alias_value":"IQAYCPX442UA","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"pith_short_16","alias_value":"IQAYCPX442UAMX76","created_at":"2026-07-05T09:29:03Z"},{"alias_kind":"pith_short_8","alias_value":"IQAYCPX4","created_at":"2026-07-05T09:29:03Z"}],"graph_snapshots":[{"event_id":"sha256:a4d99ac899ef566e19db74ce1ab1f80b9103e170b72932c47fdbba645192ab53","target":"graph","created_at":"2026-07-05T09:29:03Z","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/2410.23675/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recently, acoustic communication employing Orbital Angular Momentum (OAM) opens another avenue for efficient data transmission in aquatic environments. Current topological charge (TC) detection of OAM beams relies on the orthogonality among different-order OAM beams. Such strategy requires data collection from the entire acoustic field, which inevitably reduces the efficiency and increases the bit error rate (BER). To address these challenges, this study proposes a modified Dynamic Modal Decomposition (DMD) method by partially sampling the acoustic field for precise TC detection. Numerical sim","authors_text":"Bingyi Liu, Liulin Li, Zhongyi Guo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2024-10-31T06:55:09Z","title":"Robust orbital-angular-momentum-based underwater acoustic communication with dynamic modal decomposition method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.23675","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:a5316aba5843e7fe0c84453aba0cb46e4fa1d8c6c575e12eac63e5642cfe498d","target":"record","created_at":"2026-07-05T09:29:03Z","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":"ce5593b3f27f0d00f3e50c2a0eef9e917aba7dddfea11ed16b2627c4ee8217bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2024-10-31T06:55:09Z","title_canon_sha256":"fbaaed7b42afa1f42522476bd21df2673e27a8a21e0ed70884b3aa5d5a4af252"},"schema_version":"1.0","source":{"id":"2410.23675","kind":"arxiv","version":1}},"canonical_sha256":"4401813efce6a8065ffeb95cb022666aa92ef21918668c1c6e22e82d166806ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4401813efce6a8065ffeb95cb022666aa92ef21918668c1c6e22e82d166806ae","first_computed_at":"2026-07-05T09:29:03.794731Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:29:03.794731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vFxjqX5xM6/GWAliMlLG9UBi4JQP3ndp7AqnMzZs4bLlYlxaSIbb7PTSCb9WLi72BTHLeDF8ynRo2S3QZ6AuDg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:29:03.795350Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.23675","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5316aba5843e7fe0c84453aba0cb46e4fa1d8c6c575e12eac63e5642cfe498d","sha256:a4d99ac899ef566e19db74ce1ab1f80b9103e170b72932c47fdbba645192ab53"],"state_sha256":"ea66313f55c997756baad1770ca3a3a04e609e6d6a9159b9fad893e820130918"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CJN+KEflYSoE0MHCe4tF6nFA/P9/7lj0zj7iaNHMBVt0Qvcb2Q6dqaDB0aKZiZAigU1MOCCBgNBB61eOnu9hBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T14:38:20.505415Z","bundle_sha256":"505f09203f472fb7dae708b4075d1cb97ce79f40606a39e93e8db741fbf6aaa6"}}