{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VLKZTEVDLTYCOGSW3Z3UEN5RRA","short_pith_number":"pith:VLKZTEVD","canonical_record":{"source":{"id":"1208.0227","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2012-08-01T14:13:33Z","cross_cats_sorted":[],"title_canon_sha256":"2b358e147540999c0d3c7802d4a40cd4f5f70729fdb6f863e1594356e859566f","abstract_canon_sha256":"bbc8fccd9ac73ae6fa78488ec84a60d7eaf8c38d1d1ac3095ef315917e54593a"},"schema_version":"1.0"},"canonical_sha256":"aad59992a35cf0271a56de774237b1881d86f70b682d6b494bf6251e8ee9c04a","source":{"kind":"arxiv","id":"1208.0227","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0227","created_at":"2026-05-18T01:09:28Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0227v1","created_at":"2026-05-18T01:09:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0227","created_at":"2026-05-18T01:09:28Z"},{"alias_kind":"pith_short_12","alias_value":"VLKZTEVDLTYC","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VLKZTEVDLTYCOGSW","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VLKZTEVD","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VLKZTEVDLTYCOGSW3Z3UEN5RRA","target":"record","payload":{"canonical_record":{"source":{"id":"1208.0227","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2012-08-01T14:13:33Z","cross_cats_sorted":[],"title_canon_sha256":"2b358e147540999c0d3c7802d4a40cd4f5f70729fdb6f863e1594356e859566f","abstract_canon_sha256":"bbc8fccd9ac73ae6fa78488ec84a60d7eaf8c38d1d1ac3095ef315917e54593a"},"schema_version":"1.0"},"canonical_sha256":"aad59992a35cf0271a56de774237b1881d86f70b682d6b494bf6251e8ee9c04a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:28.453432Z","signature_b64":"UOgK8CAs86C/xaL9eUdd63pKC+YPSA6fnqOpZ/1xxPbxhB4dWnXlm8uL4d2nli1jSl7QtDNwppoIn0gIr7MDCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aad59992a35cf0271a56de774237b1881d86f70b682d6b494bf6251e8ee9c04a","last_reissued_at":"2026-05-18T01:09:28.453011Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:28.453011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.0227","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":"2026-05-18T01:09:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cWT9IIqecU4tZ8A37HRQX2o2aIqmyI2+IAfkMU8dWzSgUkqoy5/aMwu6Qgfu0wJ3p8o+NPi5GFhfAvIQKptHCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T13:28:19.505471Z"},"content_sha256":"0758430b6cabe8063a49d661ed4604616498e5e4cf14b96cc5c1334602b1f353","schema_version":"1.0","event_id":"sha256:0758430b6cabe8063a49d661ed4604616498e5e4cf14b96cc5c1334602b1f353"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VLKZTEVDLTYCOGSW3Z3UEN5RRA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"OLTP on Hardware Islands","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DB","authors_text":"Anastasia Ailamaki, Danica Porobic, Ippokratis Pandis, Miguel Branco, P{\\i}nar T\\\"oz\\\"un","submitted_at":"2012-08-01T14:13:33Z","abstract_excerpt":"Modern hardware is abundantly parallel and increasingly heterogeneous. The numerous processing cores have non-uniform access latencies to the main memory and to the processor caches, which causes variability in the communication costs. Unfortunately, database systems mostly assume that all processing cores are the same and that microarchitecture differences are not significant enough to appear in critical database execution paths. As we demonstrate in this paper, however, hardware heterogeneity does appear in the critical path and conventional database architectures achieve suboptimal and even"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0227","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":"2026-05-18T01:09:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rqPP5tXQc5y4pZhVRpF9RFH4i5gY82H7UYZLR65oHj1rXLtmYyHaTqLiBlzpVSsUHaNhg6HnG+o/p7R2dbDyAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T13:28:19.505831Z"},"content_sha256":"6f7277ccb6fdc43903c87e24c24ffe7bdf1336953689071aa71361ef1d1ea1ec","schema_version":"1.0","event_id":"sha256:6f7277ccb6fdc43903c87e24c24ffe7bdf1336953689071aa71361ef1d1ea1ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA/bundle.json","state_url":"https://pith.science/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA/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":"2026-06-27T13:28:19Z","links":{"resolver":"https://pith.science/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA","bundle":"https://pith.science/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA/bundle.json","state":"https://pith.science/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VLKZTEVDLTYCOGSW3Z3UEN5RRA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VLKZTEVDLTYCOGSW3Z3UEN5RRA","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":"bbc8fccd9ac73ae6fa78488ec84a60d7eaf8c38d1d1ac3095ef315917e54593a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2012-08-01T14:13:33Z","title_canon_sha256":"2b358e147540999c0d3c7802d4a40cd4f5f70729fdb6f863e1594356e859566f"},"schema_version":"1.0","source":{"id":"1208.0227","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0227","created_at":"2026-05-18T01:09:28Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0227v1","created_at":"2026-05-18T01:09:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0227","created_at":"2026-05-18T01:09:28Z"},{"alias_kind":"pith_short_12","alias_value":"VLKZTEVDLTYC","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VLKZTEVDLTYCOGSW","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VLKZTEVD","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:6f7277ccb6fdc43903c87e24c24ffe7bdf1336953689071aa71361ef1d1ea1ec","target":"graph","created_at":"2026-05-18T01:09:28Z","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":"Modern hardware is abundantly parallel and increasingly heterogeneous. The numerous processing cores have non-uniform access latencies to the main memory and to the processor caches, which causes variability in the communication costs. Unfortunately, database systems mostly assume that all processing cores are the same and that microarchitecture differences are not significant enough to appear in critical database execution paths. As we demonstrate in this paper, however, hardware heterogeneity does appear in the critical path and conventional database architectures achieve suboptimal and even","authors_text":"Anastasia Ailamaki, Danica Porobic, Ippokratis Pandis, Miguel Branco, P{\\i}nar T\\\"oz\\\"un","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2012-08-01T14:13:33Z","title":"OLTP on Hardware Islands"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0227","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":"sha256:0758430b6cabe8063a49d661ed4604616498e5e4cf14b96cc5c1334602b1f353","target":"record","created_at":"2026-05-18T01:09:28Z","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":"bbc8fccd9ac73ae6fa78488ec84a60d7eaf8c38d1d1ac3095ef315917e54593a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2012-08-01T14:13:33Z","title_canon_sha256":"2b358e147540999c0d3c7802d4a40cd4f5f70729fdb6f863e1594356e859566f"},"schema_version":"1.0","source":{"id":"1208.0227","kind":"arxiv","version":1}},"canonical_sha256":"aad59992a35cf0271a56de774237b1881d86f70b682d6b494bf6251e8ee9c04a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aad59992a35cf0271a56de774237b1881d86f70b682d6b494bf6251e8ee9c04a","first_computed_at":"2026-05-18T01:09:28.453011Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:28.453011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UOgK8CAs86C/xaL9eUdd63pKC+YPSA6fnqOpZ/1xxPbxhB4dWnXlm8uL4d2nli1jSl7QtDNwppoIn0gIr7MDCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:28.453432Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0227","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0758430b6cabe8063a49d661ed4604616498e5e4cf14b96cc5c1334602b1f353","sha256:6f7277ccb6fdc43903c87e24c24ffe7bdf1336953689071aa71361ef1d1ea1ec"],"state_sha256":"690f7a49a48e072a8527fac82f0e9f97b2f0d5671d0bc257d90147d902201b2e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a0xYMDeao3xuCY+mmPZN+AC2adsANezgQK7Ap0nn+YsV68Z2OUcmUfwaGs1jDpNp5FfWxY+LcKl3k1qgOBu8BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T13:28:19.507662Z","bundle_sha256":"4c3692cc1e71b7e181db21baa6f3dd981102929301e402981f51e3a57be838b0"}}