{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:36XJJW6RFOT2LW4GBU7X7UW7X4","short_pith_number":"pith:36XJJW6R","canonical_record":{"source":{"id":"2606.19728","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.RO","submitted_at":"2026-06-18T02:51:29Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"32b8fe5faec101165042114e18374383d8f3fc112760bd7cdead75afda4f740f","abstract_canon_sha256":"91bed3ba1beff23486b73f63dd5384f19fa0100d09215fac67728e08a601590c"},"schema_version":"1.0"},"canonical_sha256":"dfae94dbd12ba7a5db860d3f7fd2dfbf12ca5c324758f773ff0dedccc18046d5","source":{"kind":"arxiv","id":"2606.19728","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19728","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19728v1","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19728","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"36XJJW6RFOT2","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"pith_short_16","alias_value":"36XJJW6RFOT2LW4G","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"pith_short_8","alias_value":"36XJJW6R","created_at":"2026-06-19T16:12:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:36XJJW6RFOT2LW4GBU7X7UW7X4","target":"record","payload":{"canonical_record":{"source":{"id":"2606.19728","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.RO","submitted_at":"2026-06-18T02:51:29Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"32b8fe5faec101165042114e18374383d8f3fc112760bd7cdead75afda4f740f","abstract_canon_sha256":"91bed3ba1beff23486b73f63dd5384f19fa0100d09215fac67728e08a601590c"},"schema_version":"1.0"},"canonical_sha256":"dfae94dbd12ba7a5db860d3f7fd2dfbf12ca5c324758f773ff0dedccc18046d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:12:33.457091Z","signature_b64":"p81Xxug+S0inC8iQ96EvMslBgmfY+AO7ivZsym5UrdP/lkarm1pqIOTJ5XnOSYkl+lgh53ujpQb1fAMPTjy7Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfae94dbd12ba7a5db860d3f7fd2dfbf12ca5c324758f773ff0dedccc18046d5","last_reissued_at":"2026-06-19T16:12:33.456745Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:12:33.456745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.19728","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":"2026-06-19T16:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vqgfKZUmc5cf/a7HpWkfVNb2WZqPwOXjKmAobd+KZBSLb9/C/9qlUSifE/p/vxaej0C0JnyOdcOB8n/EHovlCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T02:02:43.882567Z"},"content_sha256":"ad2a6a5f986123d2b46ec80e43eae2ab63f502cc065fa10bbae19101a9f26d51","schema_version":"1.0","event_id":"sha256:ad2a6a5f986123d2b46ec80e43eae2ab63f502cc065fa10bbae19101a9f26d51"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:36XJJW6RFOT2LW4GBU7X7UW7X4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bidirectional Tutoring for Developmental Motor Learning in Robots: Co-Developed Interaction Dynamics Support Stable Learning","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.RO","authors_text":"Jun Tani, Rui Fukushima","submitted_at":"2026-06-18T02:51:29Z","abstract_excerpt":"Infants are well known to develop their motor skills through dense interaction with caregivers. Although such social interaction is crucial for human development, motor-skill learning in robots is often treated as a unidirectional process in which robots passively receive demonstrations from tutors. This overlooks a key property of social interaction: it is inherently bidirectional, with tutor and learner dynamically adapting to each other. In such interactions, the robot's past experiences may function as prior constraints that shape the dynamics of their co-developed trajectories. We hypothe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19728","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/2606.19728/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":"2026-06-19T16:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g4b4n2uv+BrQ01wG8IV5xEl27VW6FevP8Bugd+KIt/h3pr8uilqQcZZEWw6q9OV7i37mAkSXTd70W9iEn5PfCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T02:02:43.882950Z"},"content_sha256":"153b4a8928c259ea06ef84357112be79e6a6d7b591b1b2d5609f7f6f6a3e8c2d","schema_version":"1.0","event_id":"sha256:153b4a8928c259ea06ef84357112be79e6a6d7b591b1b2d5609f7f6f6a3e8c2d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/36XJJW6RFOT2LW4GBU7X7UW7X4/bundle.json","state_url":"https://pith.science/pith/36XJJW6RFOT2LW4GBU7X7UW7X4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/36XJJW6RFOT2LW4GBU7X7UW7X4/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":"2026-06-24T02:02:43Z","links":{"resolver":"https://pith.science/pith/36XJJW6RFOT2LW4GBU7X7UW7X4","bundle":"https://pith.science/pith/36XJJW6RFOT2LW4GBU7X7UW7X4/bundle.json","state":"https://pith.science/pith/36XJJW6RFOT2LW4GBU7X7UW7X4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/36XJJW6RFOT2LW4GBU7X7UW7X4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:36XJJW6RFOT2LW4GBU7X7UW7X4","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":"91bed3ba1beff23486b73f63dd5384f19fa0100d09215fac67728e08a601590c","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.RO","submitted_at":"2026-06-18T02:51:29Z","title_canon_sha256":"32b8fe5faec101165042114e18374383d8f3fc112760bd7cdead75afda4f740f"},"schema_version":"1.0","source":{"id":"2606.19728","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19728","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19728v1","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19728","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"36XJJW6RFOT2","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"pith_short_16","alias_value":"36XJJW6RFOT2LW4G","created_at":"2026-06-19T16:12:33Z"},{"alias_kind":"pith_short_8","alias_value":"36XJJW6R","created_at":"2026-06-19T16:12:33Z"}],"graph_snapshots":[{"event_id":"sha256:153b4a8928c259ea06ef84357112be79e6a6d7b591b1b2d5609f7f6f6a3e8c2d","target":"graph","created_at":"2026-06-19T16:12:33Z","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/2606.19728/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Infants are well known to develop their motor skills through dense interaction with caregivers. Although such social interaction is crucial for human development, motor-skill learning in robots is often treated as a unidirectional process in which robots passively receive demonstrations from tutors. This overlooks a key property of social interaction: it is inherently bidirectional, with tutor and learner dynamically adapting to each other. In such interactions, the robot's past experiences may function as prior constraints that shape the dynamics of their co-developed trajectories. We hypothe","authors_text":"Jun Tani, Rui Fukushima","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.RO","submitted_at":"2026-06-18T02:51:29Z","title":"Bidirectional Tutoring for Developmental Motor Learning in Robots: Co-Developed Interaction Dynamics Support Stable Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19728","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:ad2a6a5f986123d2b46ec80e43eae2ab63f502cc065fa10bbae19101a9f26d51","target":"record","created_at":"2026-06-19T16:12:33Z","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":"91bed3ba1beff23486b73f63dd5384f19fa0100d09215fac67728e08a601590c","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.RO","submitted_at":"2026-06-18T02:51:29Z","title_canon_sha256":"32b8fe5faec101165042114e18374383d8f3fc112760bd7cdead75afda4f740f"},"schema_version":"1.0","source":{"id":"2606.19728","kind":"arxiv","version":1}},"canonical_sha256":"dfae94dbd12ba7a5db860d3f7fd2dfbf12ca5c324758f773ff0dedccc18046d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfae94dbd12ba7a5db860d3f7fd2dfbf12ca5c324758f773ff0dedccc18046d5","first_computed_at":"2026-06-19T16:12:33.456745Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:12:33.456745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p81Xxug+S0inC8iQ96EvMslBgmfY+AO7ivZsym5UrdP/lkarm1pqIOTJ5XnOSYkl+lgh53ujpQb1fAMPTjy7Dw==","signature_status":"signed_v1","signed_at":"2026-06-19T16:12:33.457091Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.19728","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad2a6a5f986123d2b46ec80e43eae2ab63f502cc065fa10bbae19101a9f26d51","sha256:153b4a8928c259ea06ef84357112be79e6a6d7b591b1b2d5609f7f6f6a3e8c2d"],"state_sha256":"a64327e352ca4b07fa717c380393e494ceba139286eda8c789c3527363a4ae7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9FWnbVVrrQopmvHQgv8IipWGFIOqISIojKC1if/i2rbnwZMENtKYIhT+HWIXRu8fpbPWHCW5oVo1L2irZlJRBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T02:02:43.884931Z","bundle_sha256":"f2db65ae918b177a8129d0cc8b06e584bc251393a71e5415d82a4f13fe0e1f4f"}}