import { OPEN_PRINT_V1_VERSION, type V1IssuerRecord, type V1IssuerSigningContext, type V1RegistryEvent } from "./v1.js";
export declare const OPEN_PRINT_V1_REGISTRY_CHECKPOINT_SCHEMA: "https://openprint.art/schemas/registry-checkpoint/v1.0.json";
export type V1RegistryCheckpointPayload = {
    schema: typeof OPEN_PRINT_V1_REGISTRY_CHECKPOINT_SCHEMA;
    schemaVersion: typeof OPEN_PRINT_V1_VERSION;
    id: string;
    issuerId: string;
    registryLength: number;
    headEventDigest: string | null;
    previousCheckpointDigest: string | null;
    createdAt: string;
};
export type V1RegistryCheckpoint = Readonly<V1RegistryCheckpointPayload & {
    integrity: Readonly<{
        algorithm: "SHA-256";
        digest: string;
        scope: "registry checkpoint payload";
    }>;
    signature: Readonly<{
        algorithm: "Ed25519";
        keyId: string;
        createdAt: string;
        value: string;
        scope: "registry checkpoint payload, integrity, and signature metadata";
    }>;
}>;
export type V1CheckpointVerificationReport = Readonly<{
    valid: boolean;
    trusted: boolean;
    errors: readonly string[];
    warnings: readonly string[];
}>;
export declare function verifyV1RegistryCheckpoint(value: unknown, options?: {
    issuer?: V1IssuerRecord;
    registry?: readonly V1RegistryEvent[];
    registryIssuers?: readonly V1IssuerRecord[];
    observedCheckpoint?: V1RegistryCheckpoint;
}): Promise<V1CheckpointVerificationReport>;
export declare function createV1RegistryCheckpoint(events: readonly V1RegistryEvent[], input: {
    id: string;
    signing: V1IssuerSigningContext;
    registryIssuers?: readonly V1IssuerRecord[];
    previousCheckpoint?: V1RegistryCheckpoint;
    createdAt?: string;
}): Promise<V1RegistryCheckpoint>;
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