{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:ULC756SVQU5XCYBUYX3I2KXUSD","short_pith_number":"pith:ULC756SV","canonical_record":{"source":{"id":"2506.17831","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2025-06-21T21:58:30Z","cross_cats_sorted":[],"title_canon_sha256":"195fdb4cada61ffc6c2e17f645fda4a14beee1251d13c990270125a0011d5e37","abstract_canon_sha256":"30b6d62886f1179b42e49b1f9568b65bcc22082bd03eace2e3d2dbe717038af4"},"schema_version":"1.0"},"canonical_sha256":"a2c5fefa55853b716034c5f68d2af490c604a8b08b2f667f93b9f26ddc9ba1e3","source":{"kind":"arxiv","id":"2506.17831","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.17831","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"arxiv_version","alias_value":"2506.17831v1","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.17831","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"pith_short_12","alias_value":"ULC756SVQU5X","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"pith_short_16","alias_value":"ULC756SVQU5XCYBU","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"pith_short_8","alias_value":"ULC756SV","created_at":"2026-07-05T11:25:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:ULC756SVQU5XCYBUYX3I2KXUSD","target":"record","payload":{"canonical_record":{"source":{"id":"2506.17831","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2025-06-21T21:58:30Z","cross_cats_sorted":[],"title_canon_sha256":"195fdb4cada61ffc6c2e17f645fda4a14beee1251d13c990270125a0011d5e37","abstract_canon_sha256":"30b6d62886f1179b42e49b1f9568b65bcc22082bd03eace2e3d2dbe717038af4"},"schema_version":"1.0"},"canonical_sha256":"a2c5fefa55853b716034c5f68d2af490c604a8b08b2f667f93b9f26ddc9ba1e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:25:23.936049Z","signature_b64":"xhdgV5X8dNmU5k9aKc5DefsQkSiRN8JPhvZD53a67uSJwSl3U/Ktq83kqZf8Xugri9QdzhdFNlhh2P6emSsjAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2c5fefa55853b716034c5f68d2af490c604a8b08b2f667f93b9f26ddc9ba1e3","last_reissued_at":"2026-07-05T11:25:23.935558Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:25:23.935558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.17831","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":"2026-07-05T11:25:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fkOnfCc0OYgyOjlJwekBo0EWV7sYTgJV2BfIEDg2NIxNr7lnr1DxeEPldLXeF5Jn+LcCp0z7iq/D5jvbVVzMDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T18:16:59.061120Z"},"content_sha256":"96170362f5b5c9a2f540ebd097e08c205cef445191e2663da8db19dacb4aa134","schema_version":"1.0","event_id":"sha256:96170362f5b5c9a2f540ebd097e08c205cef445191e2663da8db19dacb4aa134"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:ULC756SVQU5XCYBUYX3I2KXUSD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Engagement and Disclosures in LLM-Powered Cognitive Behavioral Therapy Exercises: A Factorial Design Comparing the Influence of a Robot vs. Chatbot Over Time","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.RO","authors_text":"Abhyuday Singh, Anna-Maria Velentza, Bhaskar Krishnamachari, Kaleen Shrestha, Katrin Fischer, Maja Matari\\'c, Mina Kian, Mingyu Zong, Misha Arif Faruki, Pau Sang, S\\'ebastien M. R. Arnold, Shriya Upadhyay, Wallace Browning","submitted_at":"2025-06-21T21:58:30Z","abstract_excerpt":"Many researchers are working to address the worldwide mental health crisis by developing therapeutic technologies that increase the accessibility of care, including leveraging large language model (LLM) capabilities in chatbots and socially assistive robots (SARs) used for therapeutic applications. Yet, the effects of these technologies over time remain unexplored. In this study, we use a factorial design to assess the impact of embodiment and time spent engaging in therapeutic exercises on participant disclosures. We assessed transcripts gathered from a two-week study in which 26 university s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.17831","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/2506.17831/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":"2026-07-05T11:25:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T65jbq3D524eljqiPfQsMnbzvRjxDgbro6qMIsA4aORwcenUNB1XHCqXcxF299FkFdVqTkNfyP/jE8BpsXMIBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T18:16:59.061719Z"},"content_sha256":"48844499baca6f0eb124e6b50f899df91f79c782a923f1d6128121cd2c221bed","schema_version":"1.0","event_id":"sha256:48844499baca6f0eb124e6b50f899df91f79c782a923f1d6128121cd2c221bed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ULC756SVQU5XCYBUYX3I2KXUSD/bundle.json","state_url":"https://pith.science/pith/ULC756SVQU5XCYBUYX3I2KXUSD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ULC756SVQU5XCYBUYX3I2KXUSD/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":"2026-08-16T18:16:59Z","links":{"resolver":"https://pith.science/pith/ULC756SVQU5XCYBUYX3I2KXUSD","bundle":"https://pith.science/pith/ULC756SVQU5XCYBUYX3I2KXUSD/bundle.json","state":"https://pith.science/pith/ULC756SVQU5XCYBUYX3I2KXUSD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ULC756SVQU5XCYBUYX3I2KXUSD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ULC756SVQU5XCYBUYX3I2KXUSD","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":"30b6d62886f1179b42e49b1f9568b65bcc22082bd03eace2e3d2dbe717038af4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2025-06-21T21:58:30Z","title_canon_sha256":"195fdb4cada61ffc6c2e17f645fda4a14beee1251d13c990270125a0011d5e37"},"schema_version":"1.0","source":{"id":"2506.17831","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.17831","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"arxiv_version","alias_value":"2506.17831v1","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.17831","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"pith_short_12","alias_value":"ULC756SVQU5X","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"pith_short_16","alias_value":"ULC756SVQU5XCYBU","created_at":"2026-07-05T11:25:23Z"},{"alias_kind":"pith_short_8","alias_value":"ULC756SV","created_at":"2026-07-05T11:25:23Z"}],"graph_snapshots":[{"event_id":"sha256:48844499baca6f0eb124e6b50f899df91f79c782a923f1d6128121cd2c221bed","target":"graph","created_at":"2026-07-05T11:25:23Z","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/2506.17831/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many researchers are working to address the worldwide mental health crisis by developing therapeutic technologies that increase the accessibility of care, including leveraging large language model (LLM) capabilities in chatbots and socially assistive robots (SARs) used for therapeutic applications. Yet, the effects of these technologies over time remain unexplored. In this study, we use a factorial design to assess the impact of embodiment and time spent engaging in therapeutic exercises on participant disclosures. We assessed transcripts gathered from a two-week study in which 26 university s","authors_text":"Abhyuday Singh, Anna-Maria Velentza, Bhaskar Krishnamachari, Kaleen Shrestha, Katrin Fischer, Maja Matari\\'c, Mina Kian, Mingyu Zong, Misha Arif Faruki, Pau Sang, S\\'ebastien M. R. Arnold, Shriya Upadhyay, Wallace Browning","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2025-06-21T21:58:30Z","title":"Engagement and Disclosures in LLM-Powered Cognitive Behavioral Therapy Exercises: A Factorial Design Comparing the Influence of a Robot vs. Chatbot Over Time"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.17831","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":"sha256:96170362f5b5c9a2f540ebd097e08c205cef445191e2663da8db19dacb4aa134","target":"record","created_at":"2026-07-05T11:25:23Z","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":"30b6d62886f1179b42e49b1f9568b65bcc22082bd03eace2e3d2dbe717038af4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2025-06-21T21:58:30Z","title_canon_sha256":"195fdb4cada61ffc6c2e17f645fda4a14beee1251d13c990270125a0011d5e37"},"schema_version":"1.0","source":{"id":"2506.17831","kind":"arxiv","version":1}},"canonical_sha256":"a2c5fefa55853b716034c5f68d2af490c604a8b08b2f667f93b9f26ddc9ba1e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2c5fefa55853b716034c5f68d2af490c604a8b08b2f667f93b9f26ddc9ba1e3","first_computed_at":"2026-07-05T11:25:23.935558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:25:23.935558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xhdgV5X8dNmU5k9aKc5DefsQkSiRN8JPhvZD53a67uSJwSl3U/Ktq83kqZf8Xugri9QdzhdFNlhh2P6emSsjAA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:25:23.936049Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.17831","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:96170362f5b5c9a2f540ebd097e08c205cef445191e2663da8db19dacb4aa134","sha256:48844499baca6f0eb124e6b50f899df91f79c782a923f1d6128121cd2c221bed"],"state_sha256":"9be566aecc54328161eed69019a1e428b9c010023312640aa1ad037e976ebf6a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LeKg2Uf7lOzPSCylDH2T+yhm06nKEhmFIMxOM1TAwLHk1YPOX7Qf+Yq1kyvHrhNIjhlEhPQnxUThaXyFzqpYAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T18:16:59.066759Z","bundle_sha256":"0861fb4536cefe0c958a61d0d98d3db1c2bc58714a84c6a8767b823240a4802b"}}