{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:C4A4QE2IRF35KTRQYI5RTQNMKM","short_pith_number":"pith:C4A4QE2I","canonical_record":{"source":{"id":"2607.05685","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2026-07-06T23:07:31Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"50df8e26e4ddc3286119f8122bc7a54ae5baab1db4e95911a588d23151f62527","abstract_canon_sha256":"70362b0d6663f1656525067ef349b5cf5955047b1d421d32e22a24bfbb16d7ea"},"schema_version":"1.0"},"canonical_sha256":"1701c813488977d54e30c23b19c1ac5301e3e4a88dc17333d72606a15c59062a","source":{"kind":"arxiv","id":"2607.05685","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.05685","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"2607.05685v1","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.05685","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"C4A4QE2IRF35","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"pith_short_16","alias_value":"C4A4QE2IRF35KTRQ","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"pith_short_8","alias_value":"C4A4QE2I","created_at":"2026-07-08T01:18:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:C4A4QE2IRF35KTRQYI5RTQNMKM","target":"record","payload":{"canonical_record":{"source":{"id":"2607.05685","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2026-07-06T23:07:31Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"50df8e26e4ddc3286119f8122bc7a54ae5baab1db4e95911a588d23151f62527","abstract_canon_sha256":"70362b0d6663f1656525067ef349b5cf5955047b1d421d32e22a24bfbb16d7ea"},"schema_version":"1.0"},"canonical_sha256":"1701c813488977d54e30c23b19c1ac5301e3e4a88dc17333d72606a15c59062a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-08T01:18:41.567165Z","signature_b64":"wtwzU1i0fxE0j8+1CS14I3efg3BFZ21UQe5nqZJ5LjoERahC7kFzy6Ew6Kq/gzrqGXna9OJ5+oVWs6XuLb3wAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1701c813488977d54e30c23b19c1ac5301e3e4a88dc17333d72606a15c59062a","last_reissued_at":"2026-07-08T01:18:41.566724Z","signature_status":"signed_v1","first_computed_at":"2026-07-08T01:18:41.566724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.05685","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":"2026-07-08T01:18:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ptxy8el3Uy8+1tKrmoY/8B1OnQ6FB8/rGipOEks7VoBytrUH5E1xcNRV6rpeCP6aPOtZzobSRs018uObcp2HBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:04:45.558069Z"},"content_sha256":"c0e037c50fe7cf4780aee49536db51a01c157e2a3d488a002da2ce82434e5126","schema_version":"1.0","event_id":"sha256:c0e037c50fe7cf4780aee49536db51a01c157e2a3d488a002da2ce82434e5126"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:C4A4QE2IRF35KTRQYI5RTQNMKM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Depression Symptoms and Relational Patterns in 187k ChatGPT Histories","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.HC","authors_text":"Dunigan Folk, Lyle Ungar, Neil K. R. Sehgal, Sharath Chandra Guntuku","submitted_at":"2026-07-06T23:07:31Z","abstract_excerpt":"Large language models are increasingly used as private, always-available conversational systems, but little is known about how people with depressive symptoms use them. Building on CSCW work on disclosure and peer support, we examine ChatGPT as an emerging informal support infrastructure: private, persistent, responsive, and available outside ordinary hours. We analyze 187,093 ChatGPT conversations from 766 participants who completed the PHQ-8, comparing those below the moderate-symptom threshold (score of 10) with those at or above it. Higher-PHQ participants used ChatGPT more for mental-heal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.05685","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/2607.05685/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":"2026-07-08T01:18:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m1P4i1QyxjxfgvyBQqjS3tn6PMkNwHPkmNkiax/AS9pNqmK2f0BGTkPOaisdKDXauaPG/12Gs/UrnSw7TwNUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:04:45.559865Z"},"content_sha256":"b7a8f47aacc3aa904c5a548deb462b874b1e0dd34b0fdacf575ccd50f5fe2bb9","schema_version":"1.0","event_id":"sha256:b7a8f47aacc3aa904c5a548deb462b874b1e0dd34b0fdacf575ccd50f5fe2bb9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C4A4QE2IRF35KTRQYI5RTQNMKM/bundle.json","state_url":"https://pith.science/pith/C4A4QE2IRF35KTRQYI5RTQNMKM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C4A4QE2IRF35KTRQYI5RTQNMKM/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":"2026-08-03T17:04:45Z","links":{"resolver":"https://pith.science/pith/C4A4QE2IRF35KTRQYI5RTQNMKM","bundle":"https://pith.science/pith/C4A4QE2IRF35KTRQYI5RTQNMKM/bundle.json","state":"https://pith.science/pith/C4A4QE2IRF35KTRQYI5RTQNMKM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C4A4QE2IRF35KTRQYI5RTQNMKM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:C4A4QE2IRF35KTRQYI5RTQNMKM","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":"70362b0d6663f1656525067ef349b5cf5955047b1d421d32e22a24bfbb16d7ea","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2026-07-06T23:07:31Z","title_canon_sha256":"50df8e26e4ddc3286119f8122bc7a54ae5baab1db4e95911a588d23151f62527"},"schema_version":"1.0","source":{"id":"2607.05685","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.05685","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"2607.05685v1","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.05685","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"C4A4QE2IRF35","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"pith_short_16","alias_value":"C4A4QE2IRF35KTRQ","created_at":"2026-07-08T01:18:41Z"},{"alias_kind":"pith_short_8","alias_value":"C4A4QE2I","created_at":"2026-07-08T01:18:41Z"}],"graph_snapshots":[{"event_id":"sha256:b7a8f47aacc3aa904c5a548deb462b874b1e0dd34b0fdacf575ccd50f5fe2bb9","target":"graph","created_at":"2026-07-08T01:18:41Z","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/2607.05685/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large language models are increasingly used as private, always-available conversational systems, but little is known about how people with depressive symptoms use them. Building on CSCW work on disclosure and peer support, we examine ChatGPT as an emerging informal support infrastructure: private, persistent, responsive, and available outside ordinary hours. We analyze 187,093 ChatGPT conversations from 766 participants who completed the PHQ-8, comparing those below the moderate-symptom threshold (score of 10) with those at or above it. Higher-PHQ participants used ChatGPT more for mental-heal","authors_text":"Dunigan Folk, Lyle Ungar, Neil K. R. Sehgal, Sharath Chandra Guntuku","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2026-07-06T23:07:31Z","title":"Depression Symptoms and Relational Patterns in 187k ChatGPT Histories"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.05685","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:c0e037c50fe7cf4780aee49536db51a01c157e2a3d488a002da2ce82434e5126","target":"record","created_at":"2026-07-08T01:18:41Z","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":"70362b0d6663f1656525067ef349b5cf5955047b1d421d32e22a24bfbb16d7ea","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2026-07-06T23:07:31Z","title_canon_sha256":"50df8e26e4ddc3286119f8122bc7a54ae5baab1db4e95911a588d23151f62527"},"schema_version":"1.0","source":{"id":"2607.05685","kind":"arxiv","version":1}},"canonical_sha256":"1701c813488977d54e30c23b19c1ac5301e3e4a88dc17333d72606a15c59062a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1701c813488977d54e30c23b19c1ac5301e3e4a88dc17333d72606a15c59062a","first_computed_at":"2026-07-08T01:18:41.566724Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-08T01:18:41.566724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wtwzU1i0fxE0j8+1CS14I3efg3BFZ21UQe5nqZJ5LjoERahC7kFzy6Ew6Kq/gzrqGXna9OJ5+oVWs6XuLb3wAA==","signature_status":"signed_v1","signed_at":"2026-07-08T01:18:41.567165Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.05685","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0e037c50fe7cf4780aee49536db51a01c157e2a3d488a002da2ce82434e5126","sha256:b7a8f47aacc3aa904c5a548deb462b874b1e0dd34b0fdacf575ccd50f5fe2bb9"],"state_sha256":"63c3a407e956ff9e9e3df5c3bc076cd70c8e936c5c2c870be5132b8b7d6166c2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W1kmVhJkLOhc+wzyDgDsG0CAU3VT1f5LAO5Z3zwNgY10lRbUtDIQDRl2mgUOiFCA2yhoOgdvgU3t9s8pyXKuBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:04:45.565728Z","bundle_sha256":"364f4bf2d39140f3bc1b15a6a6ec2f82084d7aa0136906c4fb331f3f64e768f4"}}