{"slug":"hydration-rpc","title":"Hydration RPC endpoints: free public URLs by latency","subtitle":"HTTP round-trip latency for chain_getHeader against every free, no-key public Hydration Polkadot parachain endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":147.557,"leader":{"name":"Hydration","slug":"hydration-official","value":147.557},"leaders":[{"name":"Hydration","slug":"hydration-official","value":147.557}],"rankings":[{"name":"Hydration","slug":"hydration-official","ms":{"p50":147.557,"p90":166.402,"p99":471.484,"mean":166.211},"successRate":99.7684,"sampleSize":4318.72},{"name":"Dwellir","slug":"dwellir","ms":{"p50":459.841,"p90":471.293,"p99":534.988,"mean":412.208},"successRate":100,"sampleSize":4318.72}],"sparkline":[162.782,161.441,163.755,173.029,172.814,170.958,170.58,169.084,171.917,157.846,164.716,163.741,174.927,164.577,159.762,151.668,151.712,175.106,183.15,188.516,173.817,171.463,178.067,172.428,178.889,171.188,165.568,157.601,158.155,161.47,158.681,157.337,161.578,159.636,158.094,152.822,152.354,152.167,151.744,152.783,153.055,152.488,151.962,151.311,151.188,152.174,164.056,183.461,182.518,171.093,151.562,169.275,173.733,181.142,204.998,202.832,197.66,157.144,161.35,160.999,160.376,152.95,149.18,153.47,169.033,169.411,193.327,184.321,191.191,164.632,157.492,151.229,154.056],"sampleSize":8637.44,"asOf":"2026-10-07T00:50:47.669Z","freshness":{"asOf":"2026-10-07T00:50:47.669Z","ageHours":0.2,"stale":false},"measured":2,"ranked":2,"headline":"Hydration has the lowest median latency of the 2 free public Hydration RPC endpoints measured, 148 ms (p50, 24h, 3 regions).","quote":"Hydration has the lowest median latency of the 2 free public Hydration RPC endpoints measured, 148 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/hydration-rpc).","cite":{"plain":"OpenChainBench. \"Hydration RPC endpoints: free public URLs by latency\". Retrieved 2026-10-07. https://openchainbench.com/benchmarks/hydration-rpc","bibtex":"@misc{ocb_hydration_rpc,\n  author = {OpenChainBench},\n  title  = {Hydration RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/hydration-rpc},\n  note   = {Retrieved 2026-10-07}\n}","apa":"OpenChainBench. (2026). Hydration RPC endpoints: free public URLs by latency. Retrieved October 7, 2026, from https://openchainbench.com/benchmarks/hydration-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Hydration RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/hydration-rpc\r\nY2  - 2026-10-07\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/hydration-rpc","ogImage":"https://openchainbench.com/api/og/hydration-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\":\"chain_getHeader\",\"params\":[]}. Plain HTTP POST. Substrate JSON-RPC.","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 Hydration-scoped view of the same harness, with the same exclusion rules.","Chain scope: every query on this page is pinned to chain=hydration. Provider coverage today: 2 endpoints (Hydration official, Dwellir)."],"license":"CC-BY-4.0"}