{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:6ZGHUOOLGCXZ2OZ5BWPITTC6YS","short_pith_number":"pith:6ZGHUOOL","canonical_record":{"source":{"id":"2302.02064","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CL","submitted_at":"2023-02-04T02:26:08Z","cross_cats_sorted":[],"title_canon_sha256":"5a2cf8b9d9063f20b146382a212545b23d37a9b3a25108935fe0de9a0980fe7b","abstract_canon_sha256":"def14c1ec57165c994b1b55d8316e7628cb6a84a935bbfa2d8d8c9ba4952d6c5"},"schema_version":"1.0"},"canonical_sha256":"f64c7a39cb30af9d3b3d0d9e89cc5ec4a9994884b9454a99c1a2e3d20eb2416c","source":{"kind":"arxiv","id":"2302.02064","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.02064","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"arxiv_version","alias_value":"2302.02064v2","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.02064","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"pith_short_12","alias_value":"6ZGHUOOLGCXZ","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"6ZGHUOOLGCXZ2OZ5","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"6ZGHUOOL","created_at":"2026-07-05T06:31:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:6ZGHUOOLGCXZ2OZ5BWPITTC6YS","target":"record","payload":{"canonical_record":{"source":{"id":"2302.02064","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CL","submitted_at":"2023-02-04T02:26:08Z","cross_cats_sorted":[],"title_canon_sha256":"5a2cf8b9d9063f20b146382a212545b23d37a9b3a25108935fe0de9a0980fe7b","abstract_canon_sha256":"def14c1ec57165c994b1b55d8316e7628cb6a84a935bbfa2d8d8c9ba4952d6c5"},"schema_version":"1.0"},"canonical_sha256":"f64c7a39cb30af9d3b3d0d9e89cc5ec4a9994884b9454a99c1a2e3d20eb2416c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:31:08.644837Z","signature_b64":"3wljTv/40u0oodbvBl1l3tIQoEez14DVYGwWfwkxTGhFaT9jc/vzGpcOfLtqL4+FB2U8ZJoJpAblW0GHMBi6CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f64c7a39cb30af9d3b3d0d9e89cc5ec4a9994884b9454a99c1a2e3d20eb2416c","last_reissued_at":"2026-07-05T06:31:08.644344Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:31:08.644344Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2302.02064","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:31:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j89O/SypqyTqdTCkcXu4bflMni2z5esYuyCW6BSLQoJSVtoYm01EiCMwG+lyepB9ejbafBb8UnSagA5G9TUTDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T10:00:36.709768Z"},"content_sha256":"e23143f5b5ce3383a921d178e59d1dba3ccfa36b765bc2b60db6012a8a75ba24","schema_version":"1.0","event_id":"sha256:e23143f5b5ce3383a921d178e59d1dba3ccfa36b765bc2b60db6012a8a75ba24"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:6ZGHUOOLGCXZ2OZ5BWPITTC6YS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lived Experience Matters: Automatic Detection of Stigma on Social Media Toward People Who Use Substances","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Amanda Devoto, Brenda Curtis, Chase Smitterberg, Daniel Roy Sadek Habib, Douglas Bellew, Garrick Sherman, Joao Sedoc, McKenzie Himelein-Wachowiak, Salvatore Giorgi","submitted_at":"2023-02-04T02:26:08Z","abstract_excerpt":"Stigma toward people who use substances (PWUS) is a leading barrier to seeking treatment.Further, those in treatment are more likely to drop out if they experience higher levels of stigmatization. While related concepts of hate speech and toxicity, including those targeted toward vulnerable populations, have been the focus of automatic content moderation research, stigma and, in particular, people who use substances have not. This paper explores stigma toward PWUS using a data set of roughly 5,000 public Reddit posts. We performed a crowd-sourced annotation task where workers are asked to anno"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.02064","kind":"arxiv","version":2},"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/2302.02064/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":"2026-07-05T06:31:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2xuwV39hZw54E6oH7sfjyxYaD0UrIt2Ww0Ec0oADeFqJLiMor+1gTyUwZAvLFPznX9rJ7Gz+jKjhVDP5t+FxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T10:00:36.710144Z"},"content_sha256":"08b67edc49816d49d75c1380400b0290c5db570bed006b72fa2ba24b386d0a0e","schema_version":"1.0","event_id":"sha256:08b67edc49816d49d75c1380400b0290c5db570bed006b72fa2ba24b386d0a0e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS/bundle.json","state_url":"https://pith.science/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS/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":"2026-07-06T10:00:36Z","links":{"resolver":"https://pith.science/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS","bundle":"https://pith.science/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS/bundle.json","state":"https://pith.science/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZGHUOOLGCXZ2OZ5BWPITTC6YS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:6ZGHUOOLGCXZ2OZ5BWPITTC6YS","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":"def14c1ec57165c994b1b55d8316e7628cb6a84a935bbfa2d8d8c9ba4952d6c5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CL","submitted_at":"2023-02-04T02:26:08Z","title_canon_sha256":"5a2cf8b9d9063f20b146382a212545b23d37a9b3a25108935fe0de9a0980fe7b"},"schema_version":"1.0","source":{"id":"2302.02064","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.02064","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"arxiv_version","alias_value":"2302.02064v2","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.02064","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"pith_short_12","alias_value":"6ZGHUOOLGCXZ","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"6ZGHUOOLGCXZ2OZ5","created_at":"2026-07-05T06:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"6ZGHUOOL","created_at":"2026-07-05T06:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:08b67edc49816d49d75c1380400b0290c5db570bed006b72fa2ba24b386d0a0e","target":"graph","created_at":"2026-07-05T06:31:08Z","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/2302.02064/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Stigma toward people who use substances (PWUS) is a leading barrier to seeking treatment.Further, those in treatment are more likely to drop out if they experience higher levels of stigmatization. While related concepts of hate speech and toxicity, including those targeted toward vulnerable populations, have been the focus of automatic content moderation research, stigma and, in particular, people who use substances have not. This paper explores stigma toward PWUS using a data set of roughly 5,000 public Reddit posts. We performed a crowd-sourced annotation task where workers are asked to anno","authors_text":"Amanda Devoto, Brenda Curtis, Chase Smitterberg, Daniel Roy Sadek Habib, Douglas Bellew, Garrick Sherman, Joao Sedoc, McKenzie Himelein-Wachowiak, Salvatore Giorgi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CL","submitted_at":"2023-02-04T02:26:08Z","title":"Lived Experience Matters: Automatic Detection of Stigma on Social Media Toward People Who Use Substances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.02064","kind":"arxiv","version":2},"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:e23143f5b5ce3383a921d178e59d1dba3ccfa36b765bc2b60db6012a8a75ba24","target":"record","created_at":"2026-07-05T06:31:08Z","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":"def14c1ec57165c994b1b55d8316e7628cb6a84a935bbfa2d8d8c9ba4952d6c5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CL","submitted_at":"2023-02-04T02:26:08Z","title_canon_sha256":"5a2cf8b9d9063f20b146382a212545b23d37a9b3a25108935fe0de9a0980fe7b"},"schema_version":"1.0","source":{"id":"2302.02064","kind":"arxiv","version":2}},"canonical_sha256":"f64c7a39cb30af9d3b3d0d9e89cc5ec4a9994884b9454a99c1a2e3d20eb2416c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f64c7a39cb30af9d3b3d0d9e89cc5ec4a9994884b9454a99c1a2e3d20eb2416c","first_computed_at":"2026-07-05T06:31:08.644344Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:31:08.644344Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3wljTv/40u0oodbvBl1l3tIQoEez14DVYGwWfwkxTGhFaT9jc/vzGpcOfLtqL4+FB2U8ZJoJpAblW0GHMBi6CA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:31:08.644837Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.02064","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e23143f5b5ce3383a921d178e59d1dba3ccfa36b765bc2b60db6012a8a75ba24","sha256:08b67edc49816d49d75c1380400b0290c5db570bed006b72fa2ba24b386d0a0e"],"state_sha256":"cca40e2ce79f8de89ef240fc31a43f03d0505e78f207a89d641fb9b14ac7766e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sI719Q2K0CW5x42MEwkfqw3nfHOXK29F62CdzOOfaYwOpHGj1yj0+zLDmafC6FmnbzK1G3DdVKx4UgZdby/gBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T10:00:36.712111Z","bundle_sha256":"55c8f160f44d7d7385a22ccd0f20804f488c3da66734d881f77dbd8f958ee9f6"}}