{"slug":"ckb-rpc","title":"Nervos CKB RPC endpoints: free public URLs by latency","subtitle":"HTTP round-trip latency for get_tip_block_number against every available public Nervos CKB node, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":154.048,"leader":{"name":"Nervos Foundation","slug":"ckb-dev","value":154.048},"leaders":[{"name":"Nervos Foundation","slug":"ckb-dev","value":154.048}],"rankings":[{"name":"Nervos Foundation","slug":"ckb-dev","ms":{"p50":154.048,"p90":384.913,"p99":661.871,"mean":206.463},"successRate":99.9768,"sampleSize":4319.71},{"name":"CKBapp","slug":"ckbapp","ms":{"p50":166.98,"p90":463.554,"p99":497.324,"mean":242.725},"successRate":99.9768,"sampleSize":4319.71}],"sparkline":[188.114,201.222,200.525,198.423,194.034,184.372,226.178,234.513,244.483,221.36,218.899,221.292,212.22,228.822,232.208,223.314,210.81,206.74,214.61,211.044,208.065,205.327,204.807,223.652,231.655,257.197,258.993,264.018,255.692,251.381,242.705,227.717,201.453,193.997,183.303,189.472,246.982,246.444,235.15,163.468,161.976,169.115,187.338,198.52,199.122,194.083,197.944,198.957,197.115,193.034,192.655,194.084,190.746,197.293,198.472,206.595,200.817,202.058,192.55,188.576,179.477,179.765,178.135,188.699,193.194,202.343,195.667,207.02,213.926,234.438,231.912,225.412,200.655],"sampleSize":8639.42,"asOf":"2026-10-08T10:16:47.564Z","freshness":{"asOf":"2026-10-08T10:16:47.564Z","ageHours":0.2,"stale":false},"measured":2,"ranked":2,"headline":"Nervos Foundation has the lowest median latency of the 2 free public Nervos CKB RPC endpoints measured, 154 ms (p50, 24h, 3 regions).","quote":"Nervos Foundation has the lowest median latency of the 2 free public Nervos CKB RPC endpoints measured, 154 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/ckb-rpc).","cite":{"plain":"OpenChainBench. \"Nervos CKB RPC endpoints: free public URLs by latency\". Retrieved 2026-10-08. https://openchainbench.com/benchmarks/ckb-rpc","bibtex":"@misc{ocb_ckb_rpc,\n  author = {OpenChainBench},\n  title  = {Nervos CKB RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/ckb-rpc},\n  note   = {Retrieved 2026-10-08}\n}","apa":"OpenChainBench. (2026). Nervos CKB RPC endpoints: free public URLs by latency. Retrieved October 8, 2026, from https://openchainbench.com/benchmarks/ckb-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Nervos CKB RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/ckb-rpc\r\nY2  - 2026-10-08\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/ckb-rpc","ogImage":"https://openchainbench.com/api/og/ckb-rpc","source":"https://github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-capabilities","methodology":["Cadence: every 60 seconds per provider, from each of 3 probe regions (us-east Virginia, eu-west Amsterdam, sgp Singapore). Headline p50/p90/p99 aggregate across all 3 regions via Prometheus avg(quantile_over_time(...)); per-region breakdowns are first-class on this page via the region tabs.","Payload: {\"jsonrpc\":\"2.0\",\"id\":<rotating>,\"method\":\"get_tip_block_number\",\"params\":[]}. Plain HTTP POST. The result field is a hex-encoded block number string (0x prefix).","Latency measurement, call-result classification (`ok`, `http_err`, `jsonrpc_err`, `stale`, `timeout`) and the archive-depth audit follow the cluster method documented on [rpc-capabilities](https://openchainbench.com/benchmarks/rpc-capabilities#methodology); this page is the Nervos CKB-scoped view of the same harness, with the same exclusion rules.","Chain scope: every query on this page is pinned to chain=ckb. Provider coverage today: 2 endpoints."],"license":"CC-BY-4.0"}