Release on proof, not on trust
Peaks of an append-only accumulator: 704 bytes, included ∧ final ∧ anchored.
Pick a chain, paste a block. The verdict is the spine’s own answer: proven · provable · outside window · dark cell.
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, any contract verifies it on-chain.
One superroot as the settlement referent: anchor reads, on-chain verifyEncoded, and the x402 payout gateway that releases escrow only when work proves. Coordination by construction, not by trust.
Signing keys live behind an approval-gated enclave signer — never in the serving path. Hosted workloads run kernel-isolated per tenant with hash-chained audit logs anchored to the root.
REST, SSE, and gRPC streaming under one key. USDC-metered on Base — machine-payable, no procurement cycle. Fintechs, CEXs, and protocols integrate the same rail on-chain and off.