{"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":229.025,"leader":{"name":"Hydration","slug":"hydration-official","value":229.025},"rankings":[{"name":"Hydration","slug":"hydration-official","ms":{"p50":229.025,"p90":376.605,"p99":822.278,"mean":262.591},"successRate":99.6515,"sampleSize":4309.79},{"name":"Dwellir","slug":"dwellir","ms":{"p50":282.977,"p90":469.914,"p99":528.484,"mean":315.365},"successRate":99.67580000000001,"sampleSize":4319.78}],"sparkline":[227.049,230.598,238.509,224.638,236.319,231.952,218.723,223.121,246.989,274.55,297.694,276.931,271.417,258.862,266.81,264.455,243.349,234.881,234.005,241.665,264.375,247.138,230.385,188.916,183.034,188.957,185.698,181.151,179.498,190.58,204.094,226.041,281.544,276.326,286.907,287.98,330.928,338.582,339.288,340.429,347.409,366.099,370.21,372.294,346.816,346.62,366.88,377.657,359.432,338.781,334.267,325.255,319.487,310.158,306.272,292.036,296.827,308.62,301.875,258.566,215,195.492,216.59,241.732,244.725,213.645,194.306,183.061,188.699,195.232,194.776,195.572,179.197],"sampleSize":8629.57,"asOf":"2026-09-23T01:10:33.716Z","freshness":{"asOf":"2026-09-23T01:10:33.716Z","ageHours":0.1,"stale":false},"measured":2,"headline":"Hydration has the lowest median latency of the 2 free public Hydration RPC endpoints measured, 229 ms (p50, 24h, 3 regions).","quote":"Hydration has the lowest median latency of the 2 free public Hydration RPC endpoints measured, 229 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 2026-09-23. 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 2026-09-23}\n}","apa":"OpenChainBench. (2026). Hydration RPC endpoints: free public URLs by latency. Retrieved September 23, 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  - 2026-09-23\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"}