[TestMethod]
        public void Test()
        {
            var rand = new Random();
            var data = new byte[10];
            rand.NextBytes(data);

            ReadOnlySpan<byte> span = data.AsSpan();

            var st = new Stopwatch(); st.Start();

            for (int x = 0; x < 100_000; x++)
            {
                span.ToArray().RIPEMD160Old();
            }

            st.Stop();
            Console.WriteLine("OLD: " + st.Elapsed);

            st = new Stopwatch(); st.Start();

            for (int x = 0; x < 100_000; x++)
            {
                span.RIPEMD160();
            }

            st.Stop();
            Console.WriteLine("NEW: " + st.Elapsed);
        }

public static byte[] RIPEMD160(this ReadOnlySpan<byte> value)
        {
            using var ripemd160 = new RIPEMD160();

            var output = new Span<byte>(new byte[Cryptography.RIPEMD160.HashSize]);
            if (!ripemd160.TryComputeHash(value, output, out _))
                throw new Exception();

            return output.ToArray();
        }