Fastest free Interlay RPC, live no-key endpoint latency
HTTP round-trip latency for Substrate chain_getHeader queries against every available public Interlay endpoint, audited every 60 seconds from 3 regions.
TL;DR. As of , Interlay posts the lowest rpc latency at 258 ms (p50, 24h) on Fastest free Interlay RPC, live no-key endpoint latency. Source: OpenChainBench, https://openchainbench.com/benchmarks/interlay-rpc.
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Comparing free RPC endpoints across every chain we measure? Open the cross-chain RPC matrix →
Interlay is a Polkadot parachain that brings trustless Bitcoin to DeFi; it issues iBTC, a fully Bitcoin-backed asset, by locking BTC in a decentralized vault system without wrapping or custodians. Interlay uses the Substrate framework and exposes a standard Substrate JSON-RPC interface; block height is queried via chain_getHeader. The Interlay official node (api.interlay.io/parachain) is the only consistently available keyless public endpoint. Every provider was live-verified with consecutive block-height probes at launch.
Methodology
Per-chain member of the RPC latency cluster, extended to Interlay. We measure the round-trip latency of a Substrate chain_getHeader query against every available public Interlay endpoint that sustains continuous probing: 1 provider at launch, every 60 seconds, from us-east, eu-west and Singapore. Each provider is probed via a JSON-RPC POST (chain_getHeader) from which the block number is extracted. The harness classifies every response (ok / http_err / jsonrpc_err / stale / timeout) with a Polkadot-scaled staleness gap (40 blocks, around 8 min at 12 s/block). The cross-chain view lives on the parent rpc-capabilities benchmark; this page is the Interlay-scoped answer with per-region breakdowns as a first-class dimension.
Frequently asked
What is the fastest free Interlay RPC right now?
The Interlay official node (api.interlay.io/parachain) is the primary keyless public endpoint, probed every 60 seconds from us-east, eu-west and Singapore. The leaderboard updates continuously against fresh Prometheus samples.
Which Interlay RPC endpoints work without an API key?
The Interlay official node at api.interlay.io/parachain sustains continuous keyless probing. Other providers (OnFinality, Dwellir) were tested but returned connection errors; only the official node was live-verified before inclusion.
What is Interlay and why does its RPC latency matter?
Interlay issues iBTC, a 1:1 Bitcoin-backed asset on Polkadot secured by decentralized vaults. Developers integrating iBTC, building vault monitoring tools, or querying collateral positions need reliable low-latency RPC access. Knowing which public endpoint is fastest from your region matters for application responsiveness.
Does the fastest Interlay RPC change by region?
With a single measured provider, per-region breakdowns reflect the geographic latency between each probe region and the Interlay official node infrastructure. The region tabs re-scope every number to a single origin.
Source code github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-capabilities