createServerSigner - Crossmint Docs

createServerSigner(params): ServerSigner

Defined in: packages/wallets/src/utils/server-signers/createServerSigner.ts:41 Creates a server signer by deriving a chain-specific key pair from a master secret using HKDF-SHA256. The derivation is deterministic: same inputs always produce the same signer.

Parameters

Parameter	Type
`params`	`CreateServerSignerParams`

Returns

ServerSigner A server signer containing the type, derived address, and key bytes.

Example

const signer = createServerSigner({
    secret: "xmsk1_abc123...",
    chain: "base-sepolia",
    projectId: "project-id",
    environment: "staging",
});
// signer = { type: "server", address: "0x...", keyBytes: Uint8Array }