{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:YXNY4ZDYUN3NB3XFWLKYS5YQ6Y","short_pith_number":"pith:YXNY4ZDY","canonical_record":{"source":{"id":"1905.11513","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CY","submitted_at":"2019-05-27T21:25:51Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"77bd06ef345a61d273539e5d99cae7580add1f5890be243b34fc481abe9acbf8","abstract_canon_sha256":"97bcbaa00e61330bdeafd9aa89a043d7715bd5df2687675afca0b71e1b0acdf7"},"schema_version":"1.0"},"canonical_sha256":"c5db8e6478a376d0eee5b2d5897710f62793e14fec52a42af9915f34bf274a3a","source":{"kind":"arxiv","id":"1905.11513","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.11513","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"arxiv_version","alias_value":"1905.11513v1","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.11513","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"pith_short_12","alias_value":"YXNY4ZDYUN3N","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YXNY4ZDYUN3NB3XF","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YXNY4ZDY","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:YXNY4ZDYUN3NB3XFWLKYS5YQ6Y","target":"record","payload":{"canonical_record":{"source":{"id":"1905.11513","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CY","submitted_at":"2019-05-27T21:25:51Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"77bd06ef345a61d273539e5d99cae7580add1f5890be243b34fc481abe9acbf8","abstract_canon_sha256":"97bcbaa00e61330bdeafd9aa89a043d7715bd5df2687675afca0b71e1b0acdf7"},"schema_version":"1.0"},"canonical_sha256":"c5db8e6478a376d0eee5b2d5897710f62793e14fec52a42af9915f34bf274a3a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:53.183538Z","signature_b64":"F76bwo7NswnXYnYGmucKXnl4tUnk15+Fp+zSrtDWFE7uWxHV1JWp0mUGxVS70LuKu2fgo67BRfGwkPMr1SljDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5db8e6478a376d0eee5b2d5897710f62793e14fec52a42af9915f34bf274a3a","last_reissued_at":"2026-05-17T23:44:53.183007Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:53.183007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.11513","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":"2026-05-17T23:44:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GhN5TWQlGVJ8Q/ObfBqXdpYfIaKYmbuOJd4f7Y1DFw3sG3gJE4f73BN4iwPneUZBeNSR2hp33AlTYAy2P7QlBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T06:14:11.286896Z"},"content_sha256":"dd3dfe75a1ac9220e89275b2f69915059a8ac345ff7ed7345a9cfbcc32af2418","schema_version":"1.0","event_id":"sha256:dd3dfe75a1ac9220e89275b2f69915059a8ac345ff7ed7345a9cfbcc32af2418"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:YXNY4ZDYUN3NB3XFWLKYS5YQ6Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Knowledge Graph-based Approach for Exploring the U.S. Opioid Epidemic","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CY","authors_text":"Ayin Vala, James Zou, Maulik R. Kamdar, Shea Shelton, Suzanne Tamang, Tome Eftimov, Tymor Hamamsy","submitted_at":"2019-05-27T21:25:51Z","abstract_excerpt":"The United States is in the midst of an opioid epidemic with recent estimates indicating that more than 130 people die every day due to drug overdose. The over-prescription and addiction to opioid painkillers, heroin, and synthetic opioids, has led to a public health crisis and created a huge social and economic burden. Statistical learning methods that use data from multiple clinical centers across the US to detect opioid over-prescribing trends and predict possible opioid misuse are required. However, the semantic heterogeneity in the representation of clinical data across different centers "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.11513","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":"2026-05-17T23:44:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f4WD7JBeLuzQPPM2V8X0Chysg+Q3zDRd+VrrODtIrfC2V0dmOFHc35IvOX+JtRg0vC02GrfG085DWJEkYcFbBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T06:14:11.287477Z"},"content_sha256":"c2e74c88c6f7607f2d7f1f54c7399b970f65eb08f578aaaba15796329de1a194","schema_version":"1.0","event_id":"sha256:c2e74c88c6f7607f2d7f1f54c7399b970f65eb08f578aaaba15796329de1a194"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y/bundle.json","state_url":"https://pith.science/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y/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":"2026-06-30T06:14:11Z","links":{"resolver":"https://pith.science/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y","bundle":"https://pith.science/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y/bundle.json","state":"https://pith.science/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YXNY4ZDYUN3NB3XFWLKYS5YQ6Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YXNY4ZDYUN3NB3XFWLKYS5YQ6Y","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":"97bcbaa00e61330bdeafd9aa89a043d7715bd5df2687675afca0b71e1b0acdf7","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CY","submitted_at":"2019-05-27T21:25:51Z","title_canon_sha256":"77bd06ef345a61d273539e5d99cae7580add1f5890be243b34fc481abe9acbf8"},"schema_version":"1.0","source":{"id":"1905.11513","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.11513","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"arxiv_version","alias_value":"1905.11513v1","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.11513","created_at":"2026-05-17T23:44:53Z"},{"alias_kind":"pith_short_12","alias_value":"YXNY4ZDYUN3N","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YXNY4ZDYUN3NB3XF","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YXNY4ZDY","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:c2e74c88c6f7607f2d7f1f54c7399b970f65eb08f578aaaba15796329de1a194","target":"graph","created_at":"2026-05-17T23:44:53Z","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":"The United States is in the midst of an opioid epidemic with recent estimates indicating that more than 130 people die every day due to drug overdose. The over-prescription and addiction to opioid painkillers, heroin, and synthetic opioids, has led to a public health crisis and created a huge social and economic burden. Statistical learning methods that use data from multiple clinical centers across the US to detect opioid over-prescribing trends and predict possible opioid misuse are required. However, the semantic heterogeneity in the representation of clinical data across different centers ","authors_text":"Ayin Vala, James Zou, Maulik R. Kamdar, Shea Shelton, Suzanne Tamang, Tome Eftimov, Tymor Hamamsy","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CY","submitted_at":"2019-05-27T21:25:51Z","title":"A Knowledge Graph-based Approach for Exploring the U.S. Opioid Epidemic"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.11513","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:dd3dfe75a1ac9220e89275b2f69915059a8ac345ff7ed7345a9cfbcc32af2418","target":"record","created_at":"2026-05-17T23:44:53Z","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":"97bcbaa00e61330bdeafd9aa89a043d7715bd5df2687675afca0b71e1b0acdf7","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CY","submitted_at":"2019-05-27T21:25:51Z","title_canon_sha256":"77bd06ef345a61d273539e5d99cae7580add1f5890be243b34fc481abe9acbf8"},"schema_version":"1.0","source":{"id":"1905.11513","kind":"arxiv","version":1}},"canonical_sha256":"c5db8e6478a376d0eee5b2d5897710f62793e14fec52a42af9915f34bf274a3a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5db8e6478a376d0eee5b2d5897710f62793e14fec52a42af9915f34bf274a3a","first_computed_at":"2026-05-17T23:44:53.183007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:53.183007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F76bwo7NswnXYnYGmucKXnl4tUnk15+Fp+zSrtDWFE7uWxHV1JWp0mUGxVS70LuKu2fgo67BRfGwkPMr1SljDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:53.183538Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.11513","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd3dfe75a1ac9220e89275b2f69915059a8ac345ff7ed7345a9cfbcc32af2418","sha256:c2e74c88c6f7607f2d7f1f54c7399b970f65eb08f578aaaba15796329de1a194"],"state_sha256":"2a83008ca2a1dc4b586bb778086b2505918e0e3429138eed5893a6825660fd64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VTlqeNmCEg/7ptfmfQnIV+LZvBH+hj7VrROjwgZav/g1UG7tFjlgkAkggsURtQoIUz6jCps6TvWxctoHmeK4BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T06:14:11.290081Z","bundle_sha256":"7e75af0622b3c212e1e7968db6b2f7e0299b72a8732533cb9e6b13e4287f1342"}}