{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:VIDSEYKU4RATEYOSNTDBBSUA5D","short_pith_number":"pith:VIDSEYKU","canonical_record":{"source":{"id":"2503.12948","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-03-17T08:59:58Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"ce45b45c037416a99a7718fba252e0313c48e32d0461259a5b97b168d2581b3b","abstract_canon_sha256":"6e808d8cb3773944ce9ebce44c9ca130ca3163babe9520cd3a0c14e856a4d437"},"schema_version":"1.0"},"canonical_sha256":"aa07226154e4413261d26cc610ca80e8d47b6514b88c93a7d2cbdfbd7c6c4940","source":{"kind":"arxiv","id":"2503.12948","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.12948","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"2503.12948v1","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.12948","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"VIDSEYKU4RAT","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"pith_short_16","alias_value":"VIDSEYKU4RATEYOS","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"pith_short_8","alias_value":"VIDSEYKU","created_at":"2026-07-05T10:32:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:VIDSEYKU4RATEYOSNTDBBSUA5D","target":"record","payload":{"canonical_record":{"source":{"id":"2503.12948","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-03-17T08:59:58Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"ce45b45c037416a99a7718fba252e0313c48e32d0461259a5b97b168d2581b3b","abstract_canon_sha256":"6e808d8cb3773944ce9ebce44c9ca130ca3163babe9520cd3a0c14e856a4d437"},"schema_version":"1.0"},"canonical_sha256":"aa07226154e4413261d26cc610ca80e8d47b6514b88c93a7d2cbdfbd7c6c4940","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:32:49.604180Z","signature_b64":"NF396MJptg+Ke8P5ccOeKkg747KlFOy9X7qWH/JibPHiy2kB8i2zheo6Cbhyp3L/rDMtrrQTa5Oyalee+zVUAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa07226154e4413261d26cc610ca80e8d47b6514b88c93a7d2cbdfbd7c6c4940","last_reissued_at":"2026-07-05T10:32:49.603667Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:32:49.603667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.12948","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":"2026-07-05T10:32:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FOy2IHn5VO5fl+A9WN/IENkjjume/k5QQp1a84HEuGsFRVJ9C3r2DkruXy9P96AQz3VO7rlFUIRJv+5CH2WNAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:50:09.173144Z"},"content_sha256":"04e31163aeec673e74fae0196536784604ff92bc7a8bd4e7ef23a615051b4a12","schema_version":"1.0","event_id":"sha256:04e31163aeec673e74fae0196536784604ff92bc7a8bd4e7ef23a615051b4a12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:VIDSEYKU4RATEYOSNTDBBSUA5D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Past, Present, and Future of Spatial Audio and Room Acoustics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.SD"],"primary_cat":"eess.AS","authors_text":"Enzo De Sena, Fabio Antonacci, Mark R. P. Thomas, Prasanga Samarasinghe, Shoichi Koyama","submitted_at":"2025-03-17T08:59:58Z","abstract_excerpt":"The study of spatial audio and room acoustics aims to create immersive audio experiences by modeling the physics and psychoacoustics of how sound behaves in space. In the long history of this research area, various key technologies have been developed based both on theoretical advancements and practical innovations. We highlight historical achievements, initiative activities, recent advancements, and future outlooks in the research area of spatial audio recording and reproduction, and room acoustic simulation, modeling, analysis, and control."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.12948","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/2503.12948/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":"2026-07-05T10:32:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NAIa9tuovFHxBQfUunTdlGE4VRW/qthO3fde4xCmz5v0lPxuhfLwnS6UZHoHv3ShwEDNlEwzXyobp5OY3kuPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:50:09.173640Z"},"content_sha256":"facdfd9ed051ca7c860042b7f5478644f026768dd5dd66034e296351f54bb27c","schema_version":"1.0","event_id":"sha256:facdfd9ed051ca7c860042b7f5478644f026768dd5dd66034e296351f54bb27c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VIDSEYKU4RATEYOSNTDBBSUA5D/bundle.json","state_url":"https://pith.science/pith/VIDSEYKU4RATEYOSNTDBBSUA5D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VIDSEYKU4RATEYOSNTDBBSUA5D/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":"2026-08-23T22:50:09Z","links":{"resolver":"https://pith.science/pith/VIDSEYKU4RATEYOSNTDBBSUA5D","bundle":"https://pith.science/pith/VIDSEYKU4RATEYOSNTDBBSUA5D/bundle.json","state":"https://pith.science/pith/VIDSEYKU4RATEYOSNTDBBSUA5D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VIDSEYKU4RATEYOSNTDBBSUA5D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:VIDSEYKU4RATEYOSNTDBBSUA5D","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":"6e808d8cb3773944ce9ebce44c9ca130ca3163babe9520cd3a0c14e856a4d437","cross_cats_sorted":["cs.SD"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-03-17T08:59:58Z","title_canon_sha256":"ce45b45c037416a99a7718fba252e0313c48e32d0461259a5b97b168d2581b3b"},"schema_version":"1.0","source":{"id":"2503.12948","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.12948","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"2503.12948v1","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.12948","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"VIDSEYKU4RAT","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"pith_short_16","alias_value":"VIDSEYKU4RATEYOS","created_at":"2026-07-05T10:32:49Z"},{"alias_kind":"pith_short_8","alias_value":"VIDSEYKU","created_at":"2026-07-05T10:32:49Z"}],"graph_snapshots":[{"event_id":"sha256:facdfd9ed051ca7c860042b7f5478644f026768dd5dd66034e296351f54bb27c","target":"graph","created_at":"2026-07-05T10:32:49Z","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/2503.12948/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The study of spatial audio and room acoustics aims to create immersive audio experiences by modeling the physics and psychoacoustics of how sound behaves in space. In the long history of this research area, various key technologies have been developed based both on theoretical advancements and practical innovations. We highlight historical achievements, initiative activities, recent advancements, and future outlooks in the research area of spatial audio recording and reproduction, and room acoustic simulation, modeling, analysis, and control.","authors_text":"Enzo De Sena, Fabio Antonacci, Mark R. P. Thomas, Prasanga Samarasinghe, Shoichi Koyama","cross_cats":["cs.SD"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-03-17T08:59:58Z","title":"Past, Present, and Future of Spatial Audio and Room Acoustics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.12948","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":"sha256:04e31163aeec673e74fae0196536784604ff92bc7a8bd4e7ef23a615051b4a12","target":"record","created_at":"2026-07-05T10:32:49Z","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":"6e808d8cb3773944ce9ebce44c9ca130ca3163babe9520cd3a0c14e856a4d437","cross_cats_sorted":["cs.SD"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-03-17T08:59:58Z","title_canon_sha256":"ce45b45c037416a99a7718fba252e0313c48e32d0461259a5b97b168d2581b3b"},"schema_version":"1.0","source":{"id":"2503.12948","kind":"arxiv","version":1}},"canonical_sha256":"aa07226154e4413261d26cc610ca80e8d47b6514b88c93a7d2cbdfbd7c6c4940","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa07226154e4413261d26cc610ca80e8d47b6514b88c93a7d2cbdfbd7c6c4940","first_computed_at":"2026-07-05T10:32:49.603667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:32:49.603667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NF396MJptg+Ke8P5ccOeKkg747KlFOy9X7qWH/JibPHiy2kB8i2zheo6Cbhyp3L/rDMtrrQTa5Oyalee+zVUAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:32:49.604180Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.12948","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04e31163aeec673e74fae0196536784604ff92bc7a8bd4e7ef23a615051b4a12","sha256:facdfd9ed051ca7c860042b7f5478644f026768dd5dd66034e296351f54bb27c"],"state_sha256":"7c2d50a55e33cf53c5c3230d90b393ee55fb897479660f822845baa0f99f5237"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iPEX0LN/n5pjJj3s7O83vYDvrBiL+RRoZsVZVLabrdS+58TZtrmC1Sr42+1Ik2RQtxj/6at2b19nIJZF6+zIDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T22:50:09.177343Z","bundle_sha256":"87aa0b0114a30f1610d494fb65b2f41bd17e918e3608879d35a9d1c3c00817b6"}}