Interpret a UUID

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UUID: 
Your input:                      a91b50d2-025c-4e8c-b2d0-b98aa4b6b21c

Various notations:

URN:                             urn:uuid:a91b50d2-025c-4e8c-b2d0-b98aa4b6b21c
URI:                             uuid:a91b50d2-025c-4e8c-b2d0-b98aa4b6b21c
Microsoft GUID syntax:           {A91B50D2-025C-4E8C-B2D0-B98AA4B6B21C}
C++ struct syntax:               { 0xa91b50d2, 0x025c, 0x4e8c, { 0xb2, 0xd0, 0xb9, 0x8a, 0xa4, 0xb6, 0xb2, 0x1c } }

As OID (ISO/ITU-T 128 bits):     2.25.224781362534244205130920599724813103644
As OID (Microsoft):              1.2.840.113556.1.8000.2554.43291.20690.604.20108.45776.12159652.11973148
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.12185422079693966988.12885002539027051036
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.2837139666.39603852.3000023434.2763436572
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.43291.20690.604.20108.45776.47498.42166.45596

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     10101001 00011011 01010000 11010010 00000010 01011100 ????1110 10001100
                                 ??110010 11010000 10111001 10001010 10100100 10110110 10110010 00011100
Random bytes:                    [0xa91b50d2025c?e8c?2d0b98aa4b6b21c]