{"slug":"ckb-rpc","title":"Fastest free Nervos CKB RPC, live no-key endpoint 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":53.5729,"leader":{"name":"CKBapp","slug":"ckbapp","value":53.5729},"rankings":[{"name":"CKBapp","slug":"ckbapp","ms":{"p50":53.5729,"p90":517.646,"p99":2073.61,"mean":213.196},"successRate":99.8448,"sampleSize":3869.7},{"name":"Nervos Foundation","slug":"ckb-dev","ms":{"p50":195.883,"p90":455.593,"p99":1183.98,"mean":261.69},"successRate":99.9225,"sampleSize":3873.69}],"sparkline":[63.4783,53.6343,54.6391,50.8048,55.4235,55.1383,57.6521,162.409,159.57,158.21,49.4155,50.7018,52.3441,54.6282,59.0977,70.334,83.3501,100.73,110.064,137.19,148.647,146.548,142.1,130.707,140.34,134.824,139.375,150.375,184.088,210.508,210.335,204.73,253.113,481.67,494.366,471.351,277.56,262.206,303.483,296.821,311.934,255.222,268.475,242.386,254.806,284.253,381.823,416.74,384.366,289.052,280.327,323.318,495.943,552.282,516.842,370.366,283.37,247.638,213.842,181.653,190.492,201.782,200.547,155.18,126.648],"sampleSize":7743.389999999999,"asOf":"2026-08-19T18:34:16.304Z","headline":"CKBapp leads rpc latency at 54 ms (p50, 24h) on Fastest free Nervos CKB RPC, live no-key endpoint latency.","quote":"CKBapp leads rpc latency at 54 ms (p50, 24h) on Fastest free Nervos CKB RPC, live no-key endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/ckb-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free Nervos CKB RPC, live no-key endpoint latency\". Retrieved 2026-08-21. https://openchainbench.com/benchmarks/ckb-rpc","bibtex":"@misc{ocb_ckb_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free Nervos CKB RPC, live no-key endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/ckb-rpc},\n  note   = {Retrieved 2026-08-21}\n}","apa":"OpenChainBench. (2026). Fastest free Nervos CKB RPC, live no-key endpoint latency. Retrieved August 21, 2026, from https://openchainbench.com/benchmarks/ckb-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free Nervos CKB RPC, live no-key endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/ckb-rpc\r\nY2  - 2026-08-21\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: client-side round-trip delta in milliseconds, exposed as both a gauge and a histogram (buckets 50 ms to 10 s), so percentiles are computed via Prometheus quantile_over_time over the last 24 hours.","Call-result classification: ok (HTTP 200 + parsable hex block number), http_err, jsonrpc_err, stale (block more than 30 behind the cross-provider tip), timeout. Latency without reliability is a misleading ranking signal.","This page is part of the per-chain RPC cluster derived from the cross-chain rpc-capabilities benchmark; the identical harness, cadence and exclusion rules apply on every chain.","Chain scope: every query on this page is pinned to chain=ckb. Provider coverage at launch: 2 endpoints (Nervos Foundation, CKBapp)."],"license":"CC-BY-4.0"}