{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:ZCXWZ7PQTY5BREH2G4XIIABGHG","short_pith_number":"pith:ZCXWZ7PQ","canonical_record":{"source":{"id":"2505.00219","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2025-04-30T23:37:19Z","cross_cats_sorted":["cs.HC"],"title_canon_sha256":"d040b48b46f728c645c8f64693d138164c9bdc8295f55ef65904ed56adfb5af0","abstract_canon_sha256":"507cde4d192ac3e4e586e33582a3c31319cff71d92533f6073cc90f63cffac54"},"schema_version":"1.0"},"canonical_sha256":"c8af6cfdf09e3a1890fa372e84002639bde77ae92f3865428f7881e80dbe7b8d","source":{"kind":"arxiv","id":"2505.00219","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.00219","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"arxiv_version","alias_value":"2505.00219v1","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.00219","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"pith_short_12","alias_value":"ZCXWZ7PQTY5B","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"pith_short_16","alias_value":"ZCXWZ7PQTY5BREH2","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"pith_short_8","alias_value":"ZCXWZ7PQ","created_at":"2026-07-05T10:56:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:ZCXWZ7PQTY5BREH2G4XIIABGHG","target":"record","payload":{"canonical_record":{"source":{"id":"2505.00219","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2025-04-30T23:37:19Z","cross_cats_sorted":["cs.HC"],"title_canon_sha256":"d040b48b46f728c645c8f64693d138164c9bdc8295f55ef65904ed56adfb5af0","abstract_canon_sha256":"507cde4d192ac3e4e586e33582a3c31319cff71d92533f6073cc90f63cffac54"},"schema_version":"1.0"},"canonical_sha256":"c8af6cfdf09e3a1890fa372e84002639bde77ae92f3865428f7881e80dbe7b8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:56:44.760752Z","signature_b64":"Z39/puKWib2bN6EsDUWPLhh8ppWLsmw2rYh+zo3YPI+WI2JB40TKwF6yiq51z8kGsPt1WadYXgF5Q5MrNF6NBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8af6cfdf09e3a1890fa372e84002639bde77ae92f3865428f7881e80dbe7b8d","last_reissued_at":"2026-07-05T10:56:44.760281Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:56:44.760281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.00219","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":"2026-07-05T10:56:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/U8eUeOta5F8SlpM09MXGm4DsqYXMbO/qy28A4aSUp8kdj21A58b0/Ezcqo0/Cu8j6X3lYEKLQUWobxNTHBXCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T16:16:47.523577Z"},"content_sha256":"eb7d5f5cf4bba99b62e881ee190e7e5c7d4bc0f32a2e36ae83811ab07956cb02","schema_version":"1.0","event_id":"sha256:eb7d5f5cf4bba99b62e881ee190e7e5c7d4bc0f32a2e36ae83811ab07956cb02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:ZCXWZ7PQTY5BREH2G4XIIABGHG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-Time Brain-Computer Interface Control of Walking Exoskeleton with Bilateral Sensory Feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.HC"],"primary_cat":"q-bio.NC","authors_text":"Angelica Nguyen, An H. Do, Brian Lee, Charles Y. Liu, Darrin Lee, David Bjanes, Derrick Lin, Hui Gong, Jeffrey Lim, Luke Bashford, Michelle Armacost, Payam Heydari, Po T. Wang, Richard A. Andersen, Shravan Thaploo, Spencer Kellis, Susan J. Shaw, Won Joon Sohn, Zoran Nenadic","submitted_at":"2025-04-30T23:37:19Z","abstract_excerpt":"Invasive brain-computer interface (BCI) technology has demonstrated the possibility of restoring brain-controlled walking in paraplegic spinal cord injury patients. However, current implementations of BCI-controlled walking still have significant drawbacks. In particular, prior systems are unidirectional and lack sensory feedback for insensate patients, have suboptimal reliance on brain signals from the bilateral arm areas of the motor cortex, and depend on external systems for signal processing. Motivated by these shortcomings, this study is the first time a bidirectional brain-computer inter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.00219","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/2505.00219/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":"2026-07-05T10:56:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w0lvGJXzrrSx3T4lu/xy3LWa3cTas1BS7hXrWRSiB9KCOS6J30Ltw+3Rn95tpXXmHRg/Pb/Tts/chdPe7YbMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T16:16:47.524098Z"},"content_sha256":"e334208800c4c7c4d9e2d911203ac18be9fff5532c65bede873275e1b4d4e223","schema_version":"1.0","event_id":"sha256:e334208800c4c7c4d9e2d911203ac18be9fff5532c65bede873275e1b4d4e223"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG/bundle.json","state_url":"https://pith.science/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG/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":"2026-08-08T16:16:47Z","links":{"resolver":"https://pith.science/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG","bundle":"https://pith.science/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG/bundle.json","state":"https://pith.science/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZCXWZ7PQTY5BREH2G4XIIABGHG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ZCXWZ7PQTY5BREH2G4XIIABGHG","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":"507cde4d192ac3e4e586e33582a3c31319cff71d92533f6073cc90f63cffac54","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2025-04-30T23:37:19Z","title_canon_sha256":"d040b48b46f728c645c8f64693d138164c9bdc8295f55ef65904ed56adfb5af0"},"schema_version":"1.0","source":{"id":"2505.00219","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.00219","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"arxiv_version","alias_value":"2505.00219v1","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.00219","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"pith_short_12","alias_value":"ZCXWZ7PQTY5B","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"pith_short_16","alias_value":"ZCXWZ7PQTY5BREH2","created_at":"2026-07-05T10:56:44Z"},{"alias_kind":"pith_short_8","alias_value":"ZCXWZ7PQ","created_at":"2026-07-05T10:56:44Z"}],"graph_snapshots":[{"event_id":"sha256:e334208800c4c7c4d9e2d911203ac18be9fff5532c65bede873275e1b4d4e223","target":"graph","created_at":"2026-07-05T10:56:44Z","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/2505.00219/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Invasive brain-computer interface (BCI) technology has demonstrated the possibility of restoring brain-controlled walking in paraplegic spinal cord injury patients. However, current implementations of BCI-controlled walking still have significant drawbacks. In particular, prior systems are unidirectional and lack sensory feedback for insensate patients, have suboptimal reliance on brain signals from the bilateral arm areas of the motor cortex, and depend on external systems for signal processing. Motivated by these shortcomings, this study is the first time a bidirectional brain-computer inter","authors_text":"Angelica Nguyen, An H. Do, Brian Lee, Charles Y. Liu, Darrin Lee, David Bjanes, Derrick Lin, Hui Gong, Jeffrey Lim, Luke Bashford, Michelle Armacost, Payam Heydari, Po T. Wang, Richard A. Andersen, Shravan Thaploo, Spencer Kellis, Susan J. Shaw, Won Joon Sohn, Zoran Nenadic","cross_cats":["cs.HC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2025-04-30T23:37:19Z","title":"Real-Time Brain-Computer Interface Control of Walking Exoskeleton with Bilateral Sensory Feedback"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.00219","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:eb7d5f5cf4bba99b62e881ee190e7e5c7d4bc0f32a2e36ae83811ab07956cb02","target":"record","created_at":"2026-07-05T10:56:44Z","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":"507cde4d192ac3e4e586e33582a3c31319cff71d92533f6073cc90f63cffac54","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2025-04-30T23:37:19Z","title_canon_sha256":"d040b48b46f728c645c8f64693d138164c9bdc8295f55ef65904ed56adfb5af0"},"schema_version":"1.0","source":{"id":"2505.00219","kind":"arxiv","version":1}},"canonical_sha256":"c8af6cfdf09e3a1890fa372e84002639bde77ae92f3865428f7881e80dbe7b8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8af6cfdf09e3a1890fa372e84002639bde77ae92f3865428f7881e80dbe7b8d","first_computed_at":"2026-07-05T10:56:44.760281Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:56:44.760281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z39/puKWib2bN6EsDUWPLhh8ppWLsmw2rYh+zo3YPI+WI2JB40TKwF6yiq51z8kGsPt1WadYXgF5Q5MrNF6NBg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:56:44.760752Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.00219","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb7d5f5cf4bba99b62e881ee190e7e5c7d4bc0f32a2e36ae83811ab07956cb02","sha256:e334208800c4c7c4d9e2d911203ac18be9fff5532c65bede873275e1b4d4e223"],"state_sha256":"a533e1a7574ab882662a98d748d0aab52f69cb97f4882dcda488ae81398993bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wjwj4jk0vZAR3Ocd6XftYLvmhd++SAreMq1kyzpAkazJNDrsVLF9cSz2aU9evLN16ZY6LQu4v/QqVU5j19PqCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T16:16:47.528300Z","bundle_sha256":"deec8f48511714ce84d4c971e1abab63df697b3776ec0bba375a9156bab8ba63"}}