{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QXYREQV2MEKEQOETD3Z2S3ZPL6","short_pith_number":"pith:QXYREQV2","canonical_record":{"source":{"id":"1801.05790","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-01-17T18:40:15Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"2c4933f00a87e953111f14acf5ab0d1bc2457fd7da9f6eb37e7c2afd0a455870","abstract_canon_sha256":"f43379e54d030109a7e37d785e3bea5da9f6c13f07c4049327e5ab3b89014ce5"},"schema_version":"1.0"},"canonical_sha256":"85f11242ba61144838931ef3a96f2f5f847fdeee459ffb864272620f4a6cc8dd","source":{"kind":"arxiv","id":"1801.05790","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.05790","created_at":"2026-05-18T00:24:22Z"},{"alias_kind":"arxiv_version","alias_value":"1801.05790v2","created_at":"2026-05-18T00:24:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05790","created_at":"2026-05-18T00:24:22Z"},{"alias_kind":"pith_short_12","alias_value":"QXYREQV2MEKE","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QXYREQV2MEKEQOET","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QXYREQV2","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QXYREQV2MEKEQOETD3Z2S3ZPL6","target":"record","payload":{"canonical_record":{"source":{"id":"1801.05790","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-01-17T18:40:15Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"2c4933f00a87e953111f14acf5ab0d1bc2457fd7da9f6eb37e7c2afd0a455870","abstract_canon_sha256":"f43379e54d030109a7e37d785e3bea5da9f6c13f07c4049327e5ab3b89014ce5"},"schema_version":"1.0"},"canonical_sha256":"85f11242ba61144838931ef3a96f2f5f847fdeee459ffb864272620f4a6cc8dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:22.062055Z","signature_b64":"2x/1lkVc5F+chXrqDXpYWlpP76AGHwb+bMkffYxp7edzIqDs5coTDoiHClcW2GVhdRYg/L6eG2sQsoCcg4shDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85f11242ba61144838931ef3a96f2f5f847fdeee459ffb864272620f4a6cc8dd","last_reissued_at":"2026-05-18T00:24:22.061633Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:22.061633Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.05790","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W/unjhL1iIE5CVRrSE6Ykx2pE2Nhi10JzOTPZmrI3Rj7VVwdpovCJzKyizoqqLt2vlZNzFanwrfmJKiUwqBLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T07:53:28.132366Z"},"content_sha256":"c9b5ae331b85434f769e5e03ff988b006b0a1124b4d5b63194680089fb1a14fa","schema_version":"1.0","event_id":"sha256:c9b5ae331b85434f769e5e03ff988b006b0a1124b4d5b63194680089fb1a14fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QXYREQV2MEKEQOETD3Z2S3ZPL6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring Hidden Acoustic Spin Underwater","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"physics.app-ph","authors_text":"Hong Chen, Jie Ren, Yang Long","submitted_at":"2018-01-17T18:40:15Z","abstract_excerpt":"Investigating wave propagation in fluid enables a variety of important applications in underwater communications, object detections and unmanned robot control. Conventionally, momentum and spin reveal fundamental physical properties about propagating waves. Yet, vast previous research focused on the orbital angular momentum of acoustics without thinking about the existence possibility of spin due to the longitudinal wave nature. Here, we show that underwater acoustic wave processes the non-trivial spin angular momentum intrinsically, which is associated with its special spin-orbital coupling r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05790","kind":"arxiv","version":2},"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":"2026-05-18T00:24:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7yrmfKwYrytbRI1Pau2dDZf1rKXzlvGdLP/IeVi2XO4B55Bn9jvgxxHzL3w6hz5Cyp0HxvzV9zI/QQveq72VCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T07:53:28.132723Z"},"content_sha256":"b83bfc3e3f4960884142ab8076aa5ad6fff832ab233c8654fc09f16f36c172cf","schema_version":"1.0","event_id":"sha256:b83bfc3e3f4960884142ab8076aa5ad6fff832ab233c8654fc09f16f36c172cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6/bundle.json","state_url":"https://pith.science/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6/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":"2026-05-28T07:53:28Z","links":{"resolver":"https://pith.science/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6","bundle":"https://pith.science/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6/bundle.json","state":"https://pith.science/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QXYREQV2MEKEQOETD3Z2S3ZPL6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QXYREQV2MEKEQOETD3Z2S3ZPL6","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":"f43379e54d030109a7e37d785e3bea5da9f6c13f07c4049327e5ab3b89014ce5","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-01-17T18:40:15Z","title_canon_sha256":"2c4933f00a87e953111f14acf5ab0d1bc2457fd7da9f6eb37e7c2afd0a455870"},"schema_version":"1.0","source":{"id":"1801.05790","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.05790","created_at":"2026-05-18T00:24:22Z"},{"alias_kind":"arxiv_version","alias_value":"1801.05790v2","created_at":"2026-05-18T00:24:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05790","created_at":"2026-05-18T00:24:22Z"},{"alias_kind":"pith_short_12","alias_value":"QXYREQV2MEKE","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QXYREQV2MEKEQOET","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QXYREQV2","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:b83bfc3e3f4960884142ab8076aa5ad6fff832ab233c8654fc09f16f36c172cf","target":"graph","created_at":"2026-05-18T00:24:22Z","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":"Investigating wave propagation in fluid enables a variety of important applications in underwater communications, object detections and unmanned robot control. Conventionally, momentum and spin reveal fundamental physical properties about propagating waves. Yet, vast previous research focused on the orbital angular momentum of acoustics without thinking about the existence possibility of spin due to the longitudinal wave nature. Here, we show that underwater acoustic wave processes the non-trivial spin angular momentum intrinsically, which is associated with its special spin-orbital coupling r","authors_text":"Hong Chen, Jie Ren, Yang Long","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-01-17T18:40:15Z","title":"Exploring Hidden Acoustic Spin Underwater"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05790","kind":"arxiv","version":2},"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:c9b5ae331b85434f769e5e03ff988b006b0a1124b4d5b63194680089fb1a14fa","target":"record","created_at":"2026-05-18T00:24:22Z","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":"f43379e54d030109a7e37d785e3bea5da9f6c13f07c4049327e5ab3b89014ce5","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-01-17T18:40:15Z","title_canon_sha256":"2c4933f00a87e953111f14acf5ab0d1bc2457fd7da9f6eb37e7c2afd0a455870"},"schema_version":"1.0","source":{"id":"1801.05790","kind":"arxiv","version":2}},"canonical_sha256":"85f11242ba61144838931ef3a96f2f5f847fdeee459ffb864272620f4a6cc8dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85f11242ba61144838931ef3a96f2f5f847fdeee459ffb864272620f4a6cc8dd","first_computed_at":"2026-05-18T00:24:22.061633Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:22.061633Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2x/1lkVc5F+chXrqDXpYWlpP76AGHwb+bMkffYxp7edzIqDs5coTDoiHClcW2GVhdRYg/L6eG2sQsoCcg4shDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:22.062055Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.05790","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9b5ae331b85434f769e5e03ff988b006b0a1124b4d5b63194680089fb1a14fa","sha256:b83bfc3e3f4960884142ab8076aa5ad6fff832ab233c8654fc09f16f36c172cf"],"state_sha256":"57ce57e2dc2cc5a236827088b90e8c74f512c25aa6d4cd3c2d100d649b40b79b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3F1d2GoBCEA9xXwOuptOlEzIBVTgwDiopl82E4SvsYes1GpWiOM5UNxeZLbdL921WHoQgm/S6Yw86X+gfd1IDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T07:53:28.134749Z","bundle_sha256":"117885aa959474b7fec63ebe84d483f2ca46260b357e63dbbba294977d022152"}}