{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XAHHOU5ZY2MHQVJXGCG5BDZMTW","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":"b2d7a0da9eef0efaacc82dcb5c45c736cfc97620e95fa97b01f921ceac589f38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2017-02-14T15:34:56Z","title_canon_sha256":"bfeaa7f1b57d96860fb31f6e4d746a355a2bd73a2d3815201faed5c3faee0768"},"schema_version":"1.0","source":{"id":"1702.04263","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.04263","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"arxiv_version","alias_value":"1702.04263v1","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.04263","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"pith_short_12","alias_value":"XAHHOU5ZY2MH","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XAHHOU5ZY2MHQVJX","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XAHHOU5Z","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:2d89f385114f39f55664c5180520da14ca1c86653bf0a6528c93e2650eeff37a","target":"graph","created_at":"2026-05-18T00:50:48Z","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"},"paper":{"abstract_excerpt":"Okapi is a new causally consistent geo-replicated key- value store. Okapi leverages two key design choices to achieve high performance. First, it relies on hybrid logical/physical clocks to achieve low latency even in the presence of clock skew. Second, Okapi achieves higher resource efficiency and better availability, at the expense of a slight increase in update visibility latency. To this end, Okapi implements a new stabilization protocol that uses a combination of vector and scalar clocks and makes a remote update visible when its delivery has been acknowledged by every data center. We eva","authors_text":"Diego Didona, Kristina Spirovska, Willy Zwaenepoel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2017-02-14T15:34:56Z","title":"Okapi: Causally Consistent Geo-Replication Made Faster, Cheaper and More Available"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04263","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:bcfb4c564968755b1a632738f5b5adb8625fe5b38c22c2ba9921b564ad2c534d","target":"record","created_at":"2026-05-18T00:50:48Z","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":"b2d7a0da9eef0efaacc82dcb5c45c736cfc97620e95fa97b01f921ceac589f38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2017-02-14T15:34:56Z","title_canon_sha256":"bfeaa7f1b57d96860fb31f6e4d746a355a2bd73a2d3815201faed5c3faee0768"},"schema_version":"1.0","source":{"id":"1702.04263","kind":"arxiv","version":1}},"canonical_sha256":"b80e7753b9c698785537308dd08f2c9d87f9d88168cadee3bb3816fe4963aa08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b80e7753b9c698785537308dd08f2c9d87f9d88168cadee3bb3816fe4963aa08","first_computed_at":"2026-05-18T00:50:48.539715Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:48.539715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h93bJFr+TZMc3cN3ZOrxnL3KXknGa2blGpEuqfc9MbGNq71lM702PxgqO3TJ+PYSvwWlELx8JU5FnrJROv9oAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:48.540269Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.04263","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bcfb4c564968755b1a632738f5b5adb8625fe5b38c22c2ba9921b564ad2c534d","sha256:2d89f385114f39f55664c5180520da14ca1c86653bf0a6528c93e2650eeff37a"],"state_sha256":"ab842761d15bd0a8d8cd7dffe5b3e00470dda85a17dfa816ae334cac3f3a44b3"}