import { KeyExchangeRequest, KeyExchangeResponse } from './utils/index.js';
/**
 * The signer a host answers a key exchange with: the domain's connected wallet
 * (`epistery.signer`), never a key rebuilt from the mnemonic at the call site.
 */
export interface HostSigner {
    address: string;
    publicKey: string;
    signMessage(message: string): Promise<string>;
}
export declare class Epistery {
    private static isInitialized;
    constructor();
    static initialize(): Promise<void>;
    /**
     * The device's half of /connect, checked, and the host's half, signed.
     *
     * Proof of signer: the message names signerAddress, and the recovered
     * address from `signature` must equal it. A contract claim (if any) is
     * verified separately by the route on chain — not here.
     */
    static handleKeyExchange(request: KeyExchangeRequest, signer: HostSigner): Promise<KeyExchangeResponse | null>;
}
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