/**
 * A PeerId is the EVM address hex (40 lowercase chars = 20 bytes, no 0x prefix).
 * This is the canonical identifier for any peer in the network.
 * The peer's secp256k1 wallet address serves as both P2P and on-chain identity.
 */
export type PeerId = string & {
    readonly __brand: "PeerId";
};
/**
 * Validates and brands a string as a PeerId.
 * Must be exactly 40 lowercase hex characters (EVM address without 0x).
 */
export declare function toPeerId(hex: string): PeerId;
/** Convert a PeerId to a checksummed 0x-prefixed EVM address. */
export declare function peerIdToAddress(peerId: string): string;
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