{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:YICLPSJF232SB7VKGB7U4MWTKK","short_pith_number":"pith:YICLPSJF","canonical_record":{"source":{"id":"2608.13263","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-08-13T14:01:21Z","cross_cats_sorted":["cs.DC","cs.OS"],"title_canon_sha256":"ae60da6a3943163df4698a17632902026304a4e540b4e0e3b57ace4ad176556b","abstract_canon_sha256":"acf7e2ec5d57e77c3b790a633e1556d7c3327fb956661834f2460f42c45a0698"},"schema_version":"1.0"},"canonical_sha256":"c204b7c925d6f520feaa307f4e32d352ac02070f85511e7af900aa74579c56c0","source":{"kind":"arxiv","id":"2608.13263","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.13263","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"2608.13263v1","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.13263","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"YICLPSJF232S","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"pith_short_16","alias_value":"YICLPSJF232SB7VK","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"pith_short_8","alias_value":"YICLPSJF","created_at":"2026-08-14T01:00:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:YICLPSJF232SB7VKGB7U4MWTKK","target":"record","payload":{"canonical_record":{"source":{"id":"2608.13263","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-08-13T14:01:21Z","cross_cats_sorted":["cs.DC","cs.OS"],"title_canon_sha256":"ae60da6a3943163df4698a17632902026304a4e540b4e0e3b57ace4ad176556b","abstract_canon_sha256":"acf7e2ec5d57e77c3b790a633e1556d7c3327fb956661834f2460f42c45a0698"},"schema_version":"1.0"},"canonical_sha256":"c204b7c925d6f520feaa307f4e32d352ac02070f85511e7af900aa74579c56c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-14T01:00:48.506559Z","signature_b64":"0yqzUmxugHUx/kRe/PStuhNst5Qm0KoWK6PnbENjC7P8FIQFBkQTiv4vBC24gZiZTYSpu2qJLYeD/Pe/NDr8DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c204b7c925d6f520feaa307f4e32d352ac02070f85511e7af900aa74579c56c0","last_reissued_at":"2026-08-14T01:00:48.504484Z","signature_status":"signed_v1","first_computed_at":"2026-08-14T01:00:48.504484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.13263","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":"2026-08-14T01:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WWG6p05ZH+rHKGH8MJaNGvCnGpW5WD4ww6PobLdHoshggJCHoF/byZWFrtTsogA2dL5FltSTAXxu/oHwgAwWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T15:46:56.828536Z"},"content_sha256":"26ad9688264f0d01a045285eae13262c7738525f59a776fe62f1641789048dd7","schema_version":"1.0","event_id":"sha256:26ad9688264f0d01a045285eae13262c7738525f59a776fe62f1641789048dd7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:YICLPSJF232SB7VKGB7U4MWTKK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"vToken: Token-Level Virtualization for Reclaimable KV Caches","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DC","cs.OS"],"primary_cat":"cs.AI","authors_text":"Dongsheng Li, Hongjia Chen, Qianru Lv, Wenfei Wu, Xiangrui Yang, Yuanfeng Chen, Yuanhang Gao","submitted_at":"2026-08-13T14:01:21Z","abstract_excerpt":"Large language model serving faces a critical memory bottleneck: the KV cache grows with sequence length and batch size. PagedAttention uses fixed-size memory blocks to reduce allocator-level fragmentation, but recent KV eviction algorithms operate at a token granularity finer than block-level management. This mismatch causes intra-block fragmentation, leaving a large fraction of allocated KV memory unreclaimable. We present vToken, a lightweight token-level virtualization layer that decouples logical token liveness from physical block placement. vToken maintains a stable logical token view th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.13263","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/2608.13263/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":"2026-08-14T01:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nBwv4Lf96Vfa3lRPTAfSFU1vMIVXuZ8QYPrl1c/ee9y39glwlZC4oAKyv6fn2JYM3azUJDQz3QUGmAYPw42mBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T15:46:56.829064Z"},"content_sha256":"907a306ae199dd93951c0ace2b96540a2f6160f700e0cca6068d3b086f90b188","schema_version":"1.0","event_id":"sha256:907a306ae199dd93951c0ace2b96540a2f6160f700e0cca6068d3b086f90b188"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:YICLPSJF232SB7VKGB7U4MWTKK","target":"integrity","payload":{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.18653/v1/2026.findings-eacl.168) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"Krishna Teja Chitty-Venkata, Jie Ye, Siddhisanket Raskar, Anthony Kougkas, Xian Sun, Murali Emani, Venkatram Vishwanath, and Bog- dan Nicolae. 2026. PagedEviction: Structured Block-wise KV Cache Pruning for Efficient Large Language Model In","arxiv_id":"2608.13263","detector":"doi_compliance","evidence":{"ref_index":9,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"10.18653/v1/","reconstructed_doi":"10.18653/v1/2026.findings-eacl.168"},"severity":"advisory","ref_index":9,"audited_at":"2026-08-14T15:18:12.260770Z","event_type":"pith.integrity.v1","detected_doi":"10.18653/v1/2026.findings-eacl.168","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"5dc5eebeba7ea216d00339129abb5ae3880683c415e86879fa9d4e1ff7fb7fd1","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.1.0","detected_arxiv_id":null,"integrity_event_id":19736,"payload_sha256":"da276230346c31eeceeea652734171abd852823eeb273a8e2e3418938e034e8a","signature_b64":"5AukH5ZXlSuU81eZr2wChSqmN5dXcKXfe1Uy775vtHbC6gQZHTbkNwxU/kUoSHBKjvWObdI8OM75hIzYM20MBQ==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-08-14T15:18:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a+zPWsMzVfBFj/VgKjwBi/9hRGZPxpb8+2cIVg4wEHfNRdZjJwegErsE08Y5KTiA7RlScKyoSz2Sw3PF6QHgBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T15:46:56.834022Z"},"content_sha256":"96e6464eb91fc5ca564a1687cc852e0f2220c7091d88857cdb0d57ba3d7849e0","schema_version":"1.0","event_id":"sha256:96e6464eb91fc5ca564a1687cc852e0f2220c7091d88857cdb0d57ba3d7849e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YICLPSJF232SB7VKGB7U4MWTKK/bundle.json","state_url":"https://pith.science/pith/YICLPSJF232SB7VKGB7U4MWTKK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YICLPSJF232SB7VKGB7U4MWTKK/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":"2026-08-22T15:46:56Z","links":{"resolver":"https://pith.science/pith/YICLPSJF232SB7VKGB7U4MWTKK","bundle":"https://pith.science/pith/YICLPSJF232SB7VKGB7U4MWTKK/bundle.json","state":"https://pith.science/pith/YICLPSJF232SB7VKGB7U4MWTKK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YICLPSJF232SB7VKGB7U4MWTKK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:YICLPSJF232SB7VKGB7U4MWTKK","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"acf7e2ec5d57e77c3b790a633e1556d7c3327fb956661834f2460f42c45a0698","cross_cats_sorted":["cs.DC","cs.OS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-08-13T14:01:21Z","title_canon_sha256":"ae60da6a3943163df4698a17632902026304a4e540b4e0e3b57ace4ad176556b"},"schema_version":"1.0","source":{"id":"2608.13263","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.13263","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"2608.13263v1","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.13263","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"YICLPSJF232S","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"pith_short_16","alias_value":"YICLPSJF232SB7VK","created_at":"2026-08-14T01:00:48Z"},{"alias_kind":"pith_short_8","alias_value":"YICLPSJF","created_at":"2026-08-14T01:00:48Z"}],"graph_snapshots":[{"event_id":"sha256:907a306ae199dd93951c0ace2b96540a2f6160f700e0cca6068d3b086f90b188","target":"graph","created_at":"2026-08-14T01:00:48Z","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/2608.13263/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large language model serving faces a critical memory bottleneck: the KV cache grows with sequence length and batch size. PagedAttention uses fixed-size memory blocks to reduce allocator-level fragmentation, but recent KV eviction algorithms operate at a token granularity finer than block-level management. This mismatch causes intra-block fragmentation, leaving a large fraction of allocated KV memory unreclaimable. We present vToken, a lightweight token-level virtualization layer that decouples logical token liveness from physical block placement. vToken maintains a stable logical token view th","authors_text":"Dongsheng Li, Hongjia Chen, Qianru Lv, Wenfei Wu, Xiangrui Yang, Yuanfeng Chen, Yuanhang Gao","cross_cats":["cs.DC","cs.OS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-08-13T14:01:21Z","title":"vToken: Token-Level Virtualization for Reclaimable KV Caches"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.13263","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":"sha256:26ad9688264f0d01a045285eae13262c7738525f59a776fe62f1641789048dd7","target":"record","created_at":"2026-08-14T01:00:48Z","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":"acf7e2ec5d57e77c3b790a633e1556d7c3327fb956661834f2460f42c45a0698","cross_cats_sorted":["cs.DC","cs.OS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-08-13T14:01:21Z","title_canon_sha256":"ae60da6a3943163df4698a17632902026304a4e540b4e0e3b57ace4ad176556b"},"schema_version":"1.0","source":{"id":"2608.13263","kind":"arxiv","version":1}},"canonical_sha256":"c204b7c925d6f520feaa307f4e32d352ac02070f85511e7af900aa74579c56c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c204b7c925d6f520feaa307f4e32d352ac02070f85511e7af900aa74579c56c0","first_computed_at":"2026-08-14T01:00:48.504484Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-14T01:00:48.504484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0yqzUmxugHUx/kRe/PStuhNst5Qm0KoWK6PnbENjC7P8FIQFBkQTiv4vBC24gZiZTYSpu2qJLYeD/Pe/NDr8DQ==","signature_status":"signed_v1","signed_at":"2026-08-14T01:00:48.506559Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.13263","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26ad9688264f0d01a045285eae13262c7738525f59a776fe62f1641789048dd7","sha256:907a306ae199dd93951c0ace2b96540a2f6160f700e0cca6068d3b086f90b188","sha256:96e6464eb91fc5ca564a1687cc852e0f2220c7091d88857cdb0d57ba3d7849e0"],"state_sha256":"c503c071bfaf5b39c047d31d3630cd4f934ea75aa5240a905f01bce92a58831c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fn1SgJU3/R8XUZ2jL9OASr2kvSJUfXhAYweMQr11WxXeRWPidna3ZKBHqY1+tL7A/jSUL5XpJKipaopFys5dBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T15:46:56.836283Z","bundle_sha256":"74766a8d86e5f0b81edea2e07afb4bfc3679662ce767b45ef7cad8eb35b8357d"}}