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Signing

What passed is signed from your own vault, under your policy. Metera never holds the key.

Your vault, your key

Signing happens inside a Turnkey enclave you own. The private key is generated there and never leaves it. Metera is a delegated signer: it can ask for a signature, and the enclave decides whether to give one.

The policy is the boundary

You set the rules the enclave enforces: which programs a transaction may touch, which tokens, how much per transaction. A transaction outside that policy is not signed, whoever asks.

Verified, then signed

Metera only asks for a signature on a transaction its preflight allowed. A refusal never reaches the vault.