{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:454HYVNYJPORW3DC53BVRS7HNV","short_pith_number":"pith:454HYVNY","canonical_record":{"source":{"id":"2509.03746","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2025-09-03T22:09:57Z","cross_cats_sorted":[],"title_canon_sha256":"759b2c81a859e6e99fd9c0977e5f5149b46f1fd22ff0335aac6eb98799cf4fa5","abstract_canon_sha256":"877eaa754ff992060faee69b5821486e5fd1d689f580a3d132a4f8fdd483ea23"},"schema_version":"1.0"},"canonical_sha256":"e7787c55b84bdd1b6c62eec358cbe76d538401fcbe8c8a750cbdab3af538bb29","source":{"kind":"arxiv","id":"2509.03746","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.03746","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"arxiv_version","alias_value":"2509.03746v1","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.03746","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_12","alias_value":"454HYVNYJPOR","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_16","alias_value":"454HYVNYJPORW3DC","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_8","alias_value":"454HYVNY","created_at":"2026-07-05T12:04:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:454HYVNYJPORW3DC53BVRS7HNV","target":"record","payload":{"canonical_record":{"source":{"id":"2509.03746","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2025-09-03T22:09:57Z","cross_cats_sorted":[],"title_canon_sha256":"759b2c81a859e6e99fd9c0977e5f5149b46f1fd22ff0335aac6eb98799cf4fa5","abstract_canon_sha256":"877eaa754ff992060faee69b5821486e5fd1d689f580a3d132a4f8fdd483ea23"},"schema_version":"1.0"},"canonical_sha256":"e7787c55b84bdd1b6c62eec358cbe76d538401fcbe8c8a750cbdab3af538bb29","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:04:45.156209Z","signature_b64":"NCOssOEYjdSwUQruTjw4+J/5DOYypxl+cjgP2ELGxkP4dftJVJO8cOy7C3qHNBk3d6rKXhQycksCdmz+CwgGCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7787c55b84bdd1b6c62eec358cbe76d538401fcbe8c8a750cbdab3af538bb29","last_reissued_at":"2026-07-05T12:04:45.155699Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:04:45.155699Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.03746","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":"2026-07-05T12:04:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DAtpXZ8CCg5FIB2hw6f7sdkHCUCTEFKDL8fi67mdz/FNtOWVX2sUe4sjPEuN7D6iVWC4pM/8YZZbSk0pIOV3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T18:27:35.875564Z"},"content_sha256":"add6ea4574f2c098a02d8c8640fe632c66f54a2097751740a8bdd7fa36c498bf","schema_version":"1.0","event_id":"sha256:add6ea4574f2c098a02d8c8640fe632c66f54a2097751740a8bdd7fa36c498bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:454HYVNYJPORW3DC53BVRS7HNV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Item ID Generation for Large-Scale LLM-based Recommendation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Anushya Subbiah, James Pine, Krishna Sayana, Kun Su, Steffen Rendle, Vikram Aggarwal","submitted_at":"2025-09-03T22:09:57Z","abstract_excerpt":"Integrating product catalogs and user behavior into LLMs can enhance recommendations with broad world knowledge, but the scale of real-world item catalogs, often containing millions of discrete item identifiers (Item IDs), poses a significant challenge. This contrasts with the smaller, tokenized text vocabularies typically used in LLMs. The predominant view within the LLM-based recommendation literature is that it is infeasible to treat item ids as a first class citizen in the LLM and instead some sort of tokenization of an item into multiple tokens is required. However, this creates a key pra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.03746","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/2509.03746/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":"2026-07-05T12:04:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DlZNZy4+y4D8iGWCuQ44q2NY6Sl3E1uXwMJnwaOp6NASBNkTO+wxDwV6HL0Y+gU8v7drQpOenkx4uD91YC3nCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T18:27:35.876096Z"},"content_sha256":"8d1de2c4776e26d865b759f2be70fe0e929dc18736daa7e97f4d01e2bf050721","schema_version":"1.0","event_id":"sha256:8d1de2c4776e26d865b759f2be70fe0e929dc18736daa7e97f4d01e2bf050721"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/454HYVNYJPORW3DC53BVRS7HNV/bundle.json","state_url":"https://pith.science/pith/454HYVNYJPORW3DC53BVRS7HNV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/454HYVNYJPORW3DC53BVRS7HNV/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":"2026-08-22T18:27:35Z","links":{"resolver":"https://pith.science/pith/454HYVNYJPORW3DC53BVRS7HNV","bundle":"https://pith.science/pith/454HYVNYJPORW3DC53BVRS7HNV/bundle.json","state":"https://pith.science/pith/454HYVNYJPORW3DC53BVRS7HNV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/454HYVNYJPORW3DC53BVRS7HNV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:454HYVNYJPORW3DC53BVRS7HNV","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":"877eaa754ff992060faee69b5821486e5fd1d689f580a3d132a4f8fdd483ea23","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2025-09-03T22:09:57Z","title_canon_sha256":"759b2c81a859e6e99fd9c0977e5f5149b46f1fd22ff0335aac6eb98799cf4fa5"},"schema_version":"1.0","source":{"id":"2509.03746","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.03746","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"arxiv_version","alias_value":"2509.03746v1","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.03746","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_12","alias_value":"454HYVNYJPOR","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_16","alias_value":"454HYVNYJPORW3DC","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_8","alias_value":"454HYVNY","created_at":"2026-07-05T12:04:45Z"}],"graph_snapshots":[{"event_id":"sha256:8d1de2c4776e26d865b759f2be70fe0e929dc18736daa7e97f4d01e2bf050721","target":"graph","created_at":"2026-07-05T12:04:45Z","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/2509.03746/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Integrating product catalogs and user behavior into LLMs can enhance recommendations with broad world knowledge, but the scale of real-world item catalogs, often containing millions of discrete item identifiers (Item IDs), poses a significant challenge. This contrasts with the smaller, tokenized text vocabularies typically used in LLMs. The predominant view within the LLM-based recommendation literature is that it is infeasible to treat item ids as a first class citizen in the LLM and instead some sort of tokenization of an item into multiple tokens is required. However, this creates a key pra","authors_text":"Anushya Subbiah, James Pine, Krishna Sayana, Kun Su, Steffen Rendle, Vikram Aggarwal","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2025-09-03T22:09:57Z","title":"Efficient Item ID Generation for Large-Scale LLM-based Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.03746","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:add6ea4574f2c098a02d8c8640fe632c66f54a2097751740a8bdd7fa36c498bf","target":"record","created_at":"2026-07-05T12:04:45Z","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":"877eaa754ff992060faee69b5821486e5fd1d689f580a3d132a4f8fdd483ea23","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2025-09-03T22:09:57Z","title_canon_sha256":"759b2c81a859e6e99fd9c0977e5f5149b46f1fd22ff0335aac6eb98799cf4fa5"},"schema_version":"1.0","source":{"id":"2509.03746","kind":"arxiv","version":1}},"canonical_sha256":"e7787c55b84bdd1b6c62eec358cbe76d538401fcbe8c8a750cbdab3af538bb29","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7787c55b84bdd1b6c62eec358cbe76d538401fcbe8c8a750cbdab3af538bb29","first_computed_at":"2026-07-05T12:04:45.155699Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:04:45.155699Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NCOssOEYjdSwUQruTjw4+J/5DOYypxl+cjgP2ELGxkP4dftJVJO8cOy7C3qHNBk3d6rKXhQycksCdmz+CwgGCg==","signature_status":"signed_v1","signed_at":"2026-07-05T12:04:45.156209Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.03746","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:add6ea4574f2c098a02d8c8640fe632c66f54a2097751740a8bdd7fa36c498bf","sha256:8d1de2c4776e26d865b759f2be70fe0e929dc18736daa7e97f4d01e2bf050721"],"state_sha256":"b0eea301ea7018903e086365dbe4c4820fcf79d7660daeb94b8a28c03f2e778e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wapD4/ZmtOmvpFbU1yFhhdlSHzyJls8UQFpOm/0YsqFt/bSmWXyu4WyXlbC4z5b8kS9jTMUr+Vpy1XyjE9ENAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T18:27:35.881696Z","bundle_sha256":"70644c414b9c9794e814295e068f2e4bf3079c351f2368612e313739066f9377"}}