export declare function hash256(data: Uint8Array): Uint8Array;
export declare function hash160(data: Uint8Array): Uint8Array;
export declare function sha256Single(data: Uint8Array): Uint8Array;
export declare function ripemd160Single(data: Uint8Array): Uint8Array;
export declare function sha1Single(data: Uint8Array): Uint8Array;
export declare function computeTxid(rawTx: Uint8Array): string;
export declare function computeMerkleRoot(txids: string[]): string;
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