{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:525MBIHXHPCEXUL3PDY4ZY3JOH","short_pith_number":"pith:525MBIHX","canonical_record":{"source":{"id":"1905.09658","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-05-23T13:51:14Z","cross_cats_sorted":[],"title_canon_sha256":"9b7009dd6a1f9fd8654b523fa157403af0935a7195957f690e4dc478ec44f323","abstract_canon_sha256":"c2a2a5af31b4205d52d2d864527a945fb80852eb91ad9ed4c3f42e22d215a7f7"},"schema_version":"1.0"},"canonical_sha256":"eebac0a0f73bc44bd17b78f1cce36971c35b090de77c777b0142f4f193497b7a","source":{"kind":"arxiv","id":"1905.09658","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.09658","created_at":"2026-05-17T23:45:16Z"},{"alias_kind":"arxiv_version","alias_value":"1905.09658v1","created_at":"2026-05-17T23:45:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.09658","created_at":"2026-05-17T23:45:16Z"},{"alias_kind":"pith_short_12","alias_value":"525MBIHXHPCE","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"525MBIHXHPCEXUL3","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"525MBIHX","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:525MBIHXHPCEXUL3PDY4ZY3JOH","target":"record","payload":{"canonical_record":{"source":{"id":"1905.09658","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-05-23T13:51:14Z","cross_cats_sorted":[],"title_canon_sha256":"9b7009dd6a1f9fd8654b523fa157403af0935a7195957f690e4dc478ec44f323","abstract_canon_sha256":"c2a2a5af31b4205d52d2d864527a945fb80852eb91ad9ed4c3f42e22d215a7f7"},"schema_version":"1.0"},"canonical_sha256":"eebac0a0f73bc44bd17b78f1cce36971c35b090de77c777b0142f4f193497b7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:16.366038Z","signature_b64":"JMRFrf7DVzLZHR7jPT9XMGiJQqonuVuZuDsAXzStFyTIu3TF+CyRu6vCxKFuN1AoWfSdAJ6lOChewVPuAzfqAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eebac0a0f73bc44bd17b78f1cce36971c35b090de77c777b0142f4f193497b7a","last_reissued_at":"2026-05-17T23:45:16.365444Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:16.365444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.09658","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":"2026-05-17T23:45:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bf7how+SilIChcdXVK8YOZxePSaeFTtUhJDaFjFPD7zvLPOE2yomECwNf8jE1f4PdYqtGRDcv/wxpOzFdsffBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T07:04:57.535906Z"},"content_sha256":"e978cc22546cae48fc6877787a1af0b183046f496f84408494e613059d350d3d","schema_version":"1.0","event_id":"sha256:e978cc22546cae48fc6877787a1af0b183046f496f84408494e613059d350d3d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:525MBIHXHPCEXUL3PDY4ZY3JOH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards Artificial Learning Companions for Mental Imagery-based Brain-Computer Interfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.HC","authors_text":"Bernard N'Kaoua (PHOENIX-POST, Bordeaux INP), Camille Jeunet (CNBI, CNRS), Fabien Lotte (Potioc, HACS, Hybrid), LaBRI, L\\'ea Pillette (Potioc, Roger N'Kambou (Laboratoire GDAC)","submitted_at":"2019-05-23T13:51:14Z","abstract_excerpt":"Mental Imagery based Brain-Computer Interfaces (MI-BCI) enable their users to control an interface, e.g., a prosthesis, by performing mental imagery tasks only, such as imagining a right arm movement while their brain activity is measured and processed by the system. Designing and using a BCI requires users to learn how to produce different and stable patterns of brain activity for each of the mental imagery tasks. However, current training protocols do not enable every user to acquire the skills required to use BCIs. These training protocols are most likely one of the main reasons why BCIs re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.09658","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":""},"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":"2026-05-17T23:45:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0PC2oAc0xthXhJwdQkTtmHouoVSc6++dxELpqR5nAI0iaJFY+Ex84Jaw5J7vWAqvxlUoUyn693fjEU6ygo55Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T07:04:57.536675Z"},"content_sha256":"b9bf48d5fa4ff38cc027853e10aa5b057fc572de19c5a5f96d184c727f69b51c","schema_version":"1.0","event_id":"sha256:b9bf48d5fa4ff38cc027853e10aa5b057fc572de19c5a5f96d184c727f69b51c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/525MBIHXHPCEXUL3PDY4ZY3JOH/bundle.json","state_url":"https://pith.science/pith/525MBIHXHPCEXUL3PDY4ZY3JOH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/525MBIHXHPCEXUL3PDY4ZY3JOH/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":"2026-06-10T07:04:57Z","links":{"resolver":"https://pith.science/pith/525MBIHXHPCEXUL3PDY4ZY3JOH","bundle":"https://pith.science/pith/525MBIHXHPCEXUL3PDY4ZY3JOH/bundle.json","state":"https://pith.science/pith/525MBIHXHPCEXUL3PDY4ZY3JOH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/525MBIHXHPCEXUL3PDY4ZY3JOH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:525MBIHXHPCEXUL3PDY4ZY3JOH","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":"c2a2a5af31b4205d52d2d864527a945fb80852eb91ad9ed4c3f42e22d215a7f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-05-23T13:51:14Z","title_canon_sha256":"9b7009dd6a1f9fd8654b523fa157403af0935a7195957f690e4dc478ec44f323"},"schema_version":"1.0","source":{"id":"1905.09658","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.09658","created_at":"2026-05-17T23:45:16Z"},{"alias_kind":"arxiv_version","alias_value":"1905.09658v1","created_at":"2026-05-17T23:45:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.09658","created_at":"2026-05-17T23:45:16Z"},{"alias_kind":"pith_short_12","alias_value":"525MBIHXHPCE","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"525MBIHXHPCEXUL3","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"525MBIHX","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:b9bf48d5fa4ff38cc027853e10aa5b057fc572de19c5a5f96d184c727f69b51c","target":"graph","created_at":"2026-05-17T23:45:16Z","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":"Mental Imagery based Brain-Computer Interfaces (MI-BCI) enable their users to control an interface, e.g., a prosthesis, by performing mental imagery tasks only, such as imagining a right arm movement while their brain activity is measured and processed by the system. Designing and using a BCI requires users to learn how to produce different and stable patterns of brain activity for each of the mental imagery tasks. However, current training protocols do not enable every user to acquire the skills required to use BCIs. These training protocols are most likely one of the main reasons why BCIs re","authors_text":"Bernard N'Kaoua (PHOENIX-POST, Bordeaux INP), Camille Jeunet (CNBI, CNRS), Fabien Lotte (Potioc, HACS, Hybrid), LaBRI, L\\'ea Pillette (Potioc, Roger N'Kambou (Laboratoire GDAC)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-05-23T13:51:14Z","title":"Towards Artificial Learning Companions for Mental Imagery-based Brain-Computer Interfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.09658","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:e978cc22546cae48fc6877787a1af0b183046f496f84408494e613059d350d3d","target":"record","created_at":"2026-05-17T23:45:16Z","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":"c2a2a5af31b4205d52d2d864527a945fb80852eb91ad9ed4c3f42e22d215a7f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-05-23T13:51:14Z","title_canon_sha256":"9b7009dd6a1f9fd8654b523fa157403af0935a7195957f690e4dc478ec44f323"},"schema_version":"1.0","source":{"id":"1905.09658","kind":"arxiv","version":1}},"canonical_sha256":"eebac0a0f73bc44bd17b78f1cce36971c35b090de77c777b0142f4f193497b7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eebac0a0f73bc44bd17b78f1cce36971c35b090de77c777b0142f4f193497b7a","first_computed_at":"2026-05-17T23:45:16.365444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:16.365444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JMRFrf7DVzLZHR7jPT9XMGiJQqonuVuZuDsAXzStFyTIu3TF+CyRu6vCxKFuN1AoWfSdAJ6lOChewVPuAzfqAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:16.366038Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.09658","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e978cc22546cae48fc6877787a1af0b183046f496f84408494e613059d350d3d","sha256:b9bf48d5fa4ff38cc027853e10aa5b057fc572de19c5a5f96d184c727f69b51c"],"state_sha256":"08d89e9a8e357a1b093babf179b719df60f7c594219f693c894a4e2bb049326e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TAPaqzBAtMVjQUNUYpr7Lp4u0g6wGwxUrFCH9B31UkPlQP+cuxn9um0RCRkDCeWgdl4VrBhQ5HfBpHit2+ZQAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T07:04:57.540772Z","bundle_sha256":"c7cf1cfa563d84ffe1d98818cbf58e5a3fbccbe74ea5387522b98cba1b51a376"}}