{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:MACCTVIEQDQZVF3KK54CI55PVN","short_pith_number":"pith:MACCTVIE","canonical_record":{"source":{"id":"2402.12788","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-20T07:56:02Z","cross_cats_sorted":[],"title_canon_sha256":"25832dcb3bbe9bced854220f5b924814f4cbc3258991f7be59849f444542cbb0","abstract_canon_sha256":"9155a19d2060604d726595b1481db0ae2e05cf73cc87862d81c8ba5d4d49c63d"},"schema_version":"1.0"},"canonical_sha256":"600429d50480e19a976a57782477afab6aaf9def1555f36d724123262bea8319","source":{"kind":"arxiv","id":"2402.12788","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.12788","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"arxiv_version","alias_value":"2402.12788v3","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.12788","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"pith_short_12","alias_value":"MACCTVIEQDQZ","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"pith_short_16","alias_value":"MACCTVIEQDQZVF3K","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"pith_short_8","alias_value":"MACCTVIE","created_at":"2026-07-05T10:17:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:MACCTVIEQDQZVF3KK54CI55PVN","target":"record","payload":{"canonical_record":{"source":{"id":"2402.12788","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-20T07:56:02Z","cross_cats_sorted":[],"title_canon_sha256":"25832dcb3bbe9bced854220f5b924814f4cbc3258991f7be59849f444542cbb0","abstract_canon_sha256":"9155a19d2060604d726595b1481db0ae2e05cf73cc87862d81c8ba5d4d49c63d"},"schema_version":"1.0"},"canonical_sha256":"600429d50480e19a976a57782477afab6aaf9def1555f36d724123262bea8319","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:17:06.609831Z","signature_b64":"lBUnHbq3fplyKwK+mWva9NXuQ//3Qfm0DILBOmHjAqJqLRAieLHa2oy48XySEVuKlqLeMMXdKmR2IuO3ryCMBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"600429d50480e19a976a57782477afab6aaf9def1555f36d724123262bea8319","last_reissued_at":"2026-07-05T10:17:06.609283Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:17:06.609283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.12788","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:17:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wJzOXlE3Ssrs7s9g3PaliaZf9WzR2DuQPTQEVW4nFdxPWgqbIxmdI8atdLZtgT7Lak5uaHyFYKVkHj/BOSVLAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:36:32.976345Z"},"content_sha256":"187ba056122bba0e9759bb7e218e68af7c50d702462cee58fae9d32891f2e0f3","schema_version":"1.0","event_id":"sha256:187ba056122bba0e9759bb7e218e68af7c50d702462cee58fae9d32891f2e0f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:MACCTVIEQDQZVF3KK54CI55PVN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"RhythmFormer: Extracting Patterned rPPG Signals based on Periodic Sparse Attention","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Bochao Zou, Huimin Ma, Jiansheng Chen, Junbao Zhuo, Weiran Huang, Zizheng Guo","submitted_at":"2024-02-20T07:56:02Z","abstract_excerpt":"Remote photoplethysmography (rPPG) is a non-contact method for detecting physiological signals based on facial videos, holding high potential in various applications. Due to the periodicity nature of rPPG signals, the long-range dependency capturing capacity of the transformer was assumed to be advantageous for such signals. However, existing methods have not conclusively demonstrated the superior performance of transformers over traditional convolutional neural networks. This may be attributed to the quadratic scaling exhibited by transformer with sequence length, resulting in coarse-grained "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.12788","kind":"arxiv","version":3},"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/2402.12788/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":"2026-07-05T10:17:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+8UwS3Y6aA3982yRdsirCS6MeiY4mfL03zy5pp0TRAYvSLY1zjyebK68H3/TqE9/Tigt4wW/fLneuPcho7qvBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:36:32.976845Z"},"content_sha256":"0b3905636583aa85b5fe71d92dcd3244edb7acdb11a74a4ce68f29e040befac6","schema_version":"1.0","event_id":"sha256:0b3905636583aa85b5fe71d92dcd3244edb7acdb11a74a4ce68f29e040befac6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MACCTVIEQDQZVF3KK54CI55PVN/bundle.json","state_url":"https://pith.science/pith/MACCTVIEQDQZVF3KK54CI55PVN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MACCTVIEQDQZVF3KK54CI55PVN/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":"2026-08-04T08:36:32Z","links":{"resolver":"https://pith.science/pith/MACCTVIEQDQZVF3KK54CI55PVN","bundle":"https://pith.science/pith/MACCTVIEQDQZVF3KK54CI55PVN/bundle.json","state":"https://pith.science/pith/MACCTVIEQDQZVF3KK54CI55PVN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MACCTVIEQDQZVF3KK54CI55PVN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:MACCTVIEQDQZVF3KK54CI55PVN","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":"9155a19d2060604d726595b1481db0ae2e05cf73cc87862d81c8ba5d4d49c63d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-20T07:56:02Z","title_canon_sha256":"25832dcb3bbe9bced854220f5b924814f4cbc3258991f7be59849f444542cbb0"},"schema_version":"1.0","source":{"id":"2402.12788","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.12788","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"arxiv_version","alias_value":"2402.12788v3","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.12788","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"pith_short_12","alias_value":"MACCTVIEQDQZ","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"pith_short_16","alias_value":"MACCTVIEQDQZVF3K","created_at":"2026-07-05T10:17:06Z"},{"alias_kind":"pith_short_8","alias_value":"MACCTVIE","created_at":"2026-07-05T10:17:06Z"}],"graph_snapshots":[{"event_id":"sha256:0b3905636583aa85b5fe71d92dcd3244edb7acdb11a74a4ce68f29e040befac6","target":"graph","created_at":"2026-07-05T10:17:06Z","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/2402.12788/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Remote photoplethysmography (rPPG) is a non-contact method for detecting physiological signals based on facial videos, holding high potential in various applications. Due to the periodicity nature of rPPG signals, the long-range dependency capturing capacity of the transformer was assumed to be advantageous for such signals. However, existing methods have not conclusively demonstrated the superior performance of transformers over traditional convolutional neural networks. This may be attributed to the quadratic scaling exhibited by transformer with sequence length, resulting in coarse-grained ","authors_text":"Bochao Zou, Huimin Ma, Jiansheng Chen, Junbao Zhuo, Weiran Huang, Zizheng Guo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-20T07:56:02Z","title":"RhythmFormer: Extracting Patterned rPPG Signals based on Periodic Sparse Attention"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.12788","kind":"arxiv","version":3},"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":"sha256:187ba056122bba0e9759bb7e218e68af7c50d702462cee58fae9d32891f2e0f3","target":"record","created_at":"2026-07-05T10:17:06Z","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":"9155a19d2060604d726595b1481db0ae2e05cf73cc87862d81c8ba5d4d49c63d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-20T07:56:02Z","title_canon_sha256":"25832dcb3bbe9bced854220f5b924814f4cbc3258991f7be59849f444542cbb0"},"schema_version":"1.0","source":{"id":"2402.12788","kind":"arxiv","version":3}},"canonical_sha256":"600429d50480e19a976a57782477afab6aaf9def1555f36d724123262bea8319","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"600429d50480e19a976a57782477afab6aaf9def1555f36d724123262bea8319","first_computed_at":"2026-07-05T10:17:06.609283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:17:06.609283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lBUnHbq3fplyKwK+mWva9NXuQ//3Qfm0DILBOmHjAqJqLRAieLHa2oy48XySEVuKlqLeMMXdKmR2IuO3ryCMBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:17:06.609831Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.12788","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:187ba056122bba0e9759bb7e218e68af7c50d702462cee58fae9d32891f2e0f3","sha256:0b3905636583aa85b5fe71d92dcd3244edb7acdb11a74a4ce68f29e040befac6"],"state_sha256":"058e8c8b7a943eee72efbaf9100166e5f95c1e78246da01f2b00751a025f6837"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wZ8PJHMjCDjawYgDN8l3MJj0eJZDNP0cDO6n7a+7fpy14jKRXHkyesoZoLIMo0FvTPfhNRhtRk9w7NAfPj/QCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:36:32.981299Z","bundle_sha256":"a6d10f3587d6350846efc78ead5da0c26b631f00cad844bb25aa6e73cd56ef89"}}