Check a block against the root.
For anyone acting on another chain’s events: one answer per block, proven, provable soon, outside the window, or not covered.
Pick a chain, paste a block. The answer comes from the proof service: proven · provable · outside window · not covered.
V5 blobs on demand: six layers from block to superroot, finality-typed per chain, refreshed every 10 seconds. The proof is portable. An agent carries it off-chain, and any contract verifies it on-chain.
One superroot as the settlement referent: anchor reads and on-chain verifyEncoded. Demands, matching and settlement records are served on coord.taifoon.dev/v1.
Signing keys are Taifoon vault keys: each lives in a secure sandbox, never leaves it, and signs only what the vault’s policy allows. They sit outside the serving path. Hosted workloads run kernel-isolated per tenant.
REST and SSE: proof reads are open, and coord.taifoon.dev/v1 takes a free key. Fintechs, CEXs, and protocols integrate the same API on-chain and off.
Payments on the priced walls are taken on Base, Arbitrum One, Arc, Robinhood Chain, Monad (USDC; USDG on Robinhood Chain), each settled and checked by the configured x402 facilitator for that network before the call is served.