{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:O3PCERUSXSTPW2KPQS4GP7IPBQ","short_pith_number":"pith:O3PCERUS","canonical_record":{"source":{"id":"2606.00422","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-05-29T23:17:34Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"206ccdbca35155505cb77b7c98a70b55901e7e461737c6a62b3e1fb0c6559012","abstract_canon_sha256":"117fe572bcdbd86176f2eaf0790af8022bbea05ce08a39362ea405e4528fd0f0"},"schema_version":"1.0"},"canonical_sha256":"76de224692bca6fb694f84b867fd0f0c28f8b7725f725d2a631c5d58758e7208","source":{"kind":"arxiv","id":"2606.00422","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.00422","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"arxiv_version","alias_value":"2606.00422v1","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.00422","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"pith_short_12","alias_value":"O3PCERUSXSTP","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"pith_short_16","alias_value":"O3PCERUSXSTPW2KP","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"pith_short_8","alias_value":"O3PCERUS","created_at":"2026-06-02T01:03:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:O3PCERUSXSTPW2KPQS4GP7IPBQ","target":"record","payload":{"canonical_record":{"source":{"id":"2606.00422","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-05-29T23:17:34Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"206ccdbca35155505cb77b7c98a70b55901e7e461737c6a62b3e1fb0c6559012","abstract_canon_sha256":"117fe572bcdbd86176f2eaf0790af8022bbea05ce08a39362ea405e4528fd0f0"},"schema_version":"1.0"},"canonical_sha256":"76de224692bca6fb694f84b867fd0f0c28f8b7725f725d2a631c5d58758e7208","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T01:03:54.191743Z","signature_b64":"1vy6bfJIEL2Ne9OlXZsLBIHMhPZt2yp/E7quw7xCy6DVJre0GiOiGMJ1u159iFjNtW6QCKoqToDCkP+CSDJUAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76de224692bca6fb694f84b867fd0f0c28f8b7725f725d2a631c5d58758e7208","last_reissued_at":"2026-06-02T01:03:54.191342Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T01:03:54.191342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.00422","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":"2026-06-02T01:03:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aw1iUhpLNSroh//XJvafk02qGdG6a4val9cR7hmy71Vzj5YBu8tMP26MQC0dCfJ1y+0MBh+lfdFdrBSJjJYeCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:38:04.630289Z"},"content_sha256":"b4b1e15599bbd0470a867e72eee02d4f4d9420f8c1842c6de9254d023c3a6672","schema_version":"1.0","event_id":"sha256:b4b1e15599bbd0470a867e72eee02d4f4d9420f8c1842c6de9254d023c3a6672"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:O3PCERUSXSTPW2KPQS4GP7IPBQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"UniPinRec: Unifying Generative Retrieval and Ranking at Pinterest Scale","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.IR","authors_text":"Aditya Mantha, Bella Huang, Charles Rosenberg, Chuxi Wang, Dhruvil Deven Badani, Hanyu Li, Hongtao Lin, Hooshmand Shokri Razaghi, Jaewon Yang, James Li, Jiajing Xu, Jialu Wang, Kousik Rajesh, Laksh Bhasin, Prabhat Agarwal, Shunyao Li, Xinyi Li, Yaxin Li, Yi-Ping Hsu, Zongyue Qin","submitted_at":"2026-05-29T23:17:34Z","abstract_excerpt":"Modern recommendation systems predominantly train retrieval and ranking as separate models despite both increasingly relying on large transformers encoding the same user behavior data, duplicating parameters, compute, and serving cost. Prior work unifies the model architecture but not the full pipeline: input formats, training procedures, and serving stacks remain fragmented across stages. We present UniPinRec, which achieves full-stack unification of retrieval and ranking at Pinterest: one input format, one model, one training stage, deployed within existing serving infrastructure. A shared t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.00422","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/2606.00422/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":"2026-06-02T01:03:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/7GX+eZURhLD3af/nmKwkiYQD8eXDSFqoA+iazN7cwOr/ugChY5mWQLTH3duuspphwYYqI9GuUM6sehB/ManCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:38:04.630793Z"},"content_sha256":"0c03b102d94bb72d6b1e94c214d87273fb482cda97b5ec174e06e62edea07665","schema_version":"1.0","event_id":"sha256:0c03b102d94bb72d6b1e94c214d87273fb482cda97b5ec174e06e62edea07665"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ/bundle.json","state_url":"https://pith.science/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ/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":"2026-06-05T14:38:04Z","links":{"resolver":"https://pith.science/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ","bundle":"https://pith.science/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ/bundle.json","state":"https://pith.science/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O3PCERUSXSTPW2KPQS4GP7IPBQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:O3PCERUSXSTPW2KPQS4GP7IPBQ","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":"117fe572bcdbd86176f2eaf0790af8022bbea05ce08a39362ea405e4528fd0f0","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-05-29T23:17:34Z","title_canon_sha256":"206ccdbca35155505cb77b7c98a70b55901e7e461737c6a62b3e1fb0c6559012"},"schema_version":"1.0","source":{"id":"2606.00422","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.00422","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"arxiv_version","alias_value":"2606.00422v1","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.00422","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"pith_short_12","alias_value":"O3PCERUSXSTP","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"pith_short_16","alias_value":"O3PCERUSXSTPW2KP","created_at":"2026-06-02T01:03:54Z"},{"alias_kind":"pith_short_8","alias_value":"O3PCERUS","created_at":"2026-06-02T01:03:54Z"}],"graph_snapshots":[{"event_id":"sha256:0c03b102d94bb72d6b1e94c214d87273fb482cda97b5ec174e06e62edea07665","target":"graph","created_at":"2026-06-02T01:03:54Z","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/2606.00422/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Modern recommendation systems predominantly train retrieval and ranking as separate models despite both increasingly relying on large transformers encoding the same user behavior data, duplicating parameters, compute, and serving cost. Prior work unifies the model architecture but not the full pipeline: input formats, training procedures, and serving stacks remain fragmented across stages. We present UniPinRec, which achieves full-stack unification of retrieval and ranking at Pinterest: one input format, one model, one training stage, deployed within existing serving infrastructure. A shared t","authors_text":"Aditya Mantha, Bella Huang, Charles Rosenberg, Chuxi Wang, Dhruvil Deven Badani, Hanyu Li, Hongtao Lin, Hooshmand Shokri Razaghi, Jaewon Yang, James Li, Jiajing Xu, Jialu Wang, Kousik Rajesh, Laksh Bhasin, Prabhat Agarwal, Shunyao Li, Xinyi Li, Yaxin Li, Yi-Ping Hsu, Zongyue Qin","cross_cats":["cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-05-29T23:17:34Z","title":"UniPinRec: Unifying Generative Retrieval and Ranking at Pinterest Scale"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.00422","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:b4b1e15599bbd0470a867e72eee02d4f4d9420f8c1842c6de9254d023c3a6672","target":"record","created_at":"2026-06-02T01:03:54Z","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":"117fe572bcdbd86176f2eaf0790af8022bbea05ce08a39362ea405e4528fd0f0","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-05-29T23:17:34Z","title_canon_sha256":"206ccdbca35155505cb77b7c98a70b55901e7e461737c6a62b3e1fb0c6559012"},"schema_version":"1.0","source":{"id":"2606.00422","kind":"arxiv","version":1}},"canonical_sha256":"76de224692bca6fb694f84b867fd0f0c28f8b7725f725d2a631c5d58758e7208","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76de224692bca6fb694f84b867fd0f0c28f8b7725f725d2a631c5d58758e7208","first_computed_at":"2026-06-02T01:03:54.191342Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-02T01:03:54.191342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1vy6bfJIEL2Ne9OlXZsLBIHMhPZt2yp/E7quw7xCy6DVJre0GiOiGMJ1u159iFjNtW6QCKoqToDCkP+CSDJUAQ==","signature_status":"signed_v1","signed_at":"2026-06-02T01:03:54.191743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.00422","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4b1e15599bbd0470a867e72eee02d4f4d9420f8c1842c6de9254d023c3a6672","sha256:0c03b102d94bb72d6b1e94c214d87273fb482cda97b5ec174e06e62edea07665"],"state_sha256":"ce2b54b38affd2b7d8e366e6bb9510bc8451fea33d1ff3c54108f0b8a932a5eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y0ZutgE1ISNWxfpZDbvRjkwEj+mi51bs2q9lW/vjN+1HAL3oe4dAGoVnYAVkiPLoCBTcctlxbeGqmaBi6/s2Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T14:38:04.632939Z","bundle_sha256":"e5175bd6f3d25413a894af368c5242e6acb8f2ccb5c5f0417c88854e0ff22401"}}