/**
 * A complete snapshot of the EVM-compatible part of the address book.
 *
 * The signer never mutates this snapshot and never persists it: owning,
 * updating and persisting the address book remains the host's responsibility.
 *
 * Only EVM-family contacts and accounts belong here. The host filters by
 * blockchain family while building the snapshot, so the signer's in-flow
 * matching never needs a family discriminator and the models below do not
 * carry one.
 */
export type EvmAddressBook = {
    contactGroups: readonly EvmContactGroup[];
    ledgerAccounts: readonly EvmLedgerAccountContact[];
};
/**
 * A named contact and the external addresses registered under it.
 *
 * The group carries the name-level proof material that every one of its
 * addresses reuses, so matching an address always yields its group without a
 * lookup.
 */
export type EvmContactGroup = {
    contactName: string;
    groupHandle: Uint8Array;
    hmacProof: Uint8Array;
    externalAddresses: readonly EvmExternalAddress[];
};
/**
 * An external address registered under a contact group, for one chain.
 *
 * The derivation path used at registration time is deliberately absent: the
 * signer never needs it to provide the contact to the device.
 */
export type EvmExternalAddress = {
    scope: string;
    address: `0x${string}`;
    chainId: bigint;
    hmacRest: Uint8Array;
};
/**
 * A named Ledger account contact, identified by its derivation path and chain
 * rather than by an address string.
 */
export type EvmLedgerAccountContact = {
    accountName: string;
    derivationPath: string;
    chainId: bigint;
    hmacProof: Uint8Array;
};
/**
 * The book bound when the host supplies none. Matches nothing.
 *
 * Frozen because it is a process-wide singleton: it is the DI binding, the
 * device-action default and the fixture every test reuses, so a single stray
 * mutation would leak into every signer at once.
 */
export declare const EMPTY_EVM_ADDRESS_BOOK: EvmAddressBook;
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