Interpret a UUID

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UUID: 
Your input:                      645c5495-3448-4d20-946b-278ba7b1f868

Various notations:

URN:                             urn:uuid:645c5495-3448-4d20-946b-278ba7b1f868
URI:                             uuid:645c5495-3448-4d20-946b-278ba7b1f868
Microsoft GUID syntax:           {645C5495-3448-4D20-946B-278BA7B1F868}
C++ struct syntax:               { 0x645c5495, 0x3448, 0x4d20, { 0x94, 0x6b, 0x27, 0x8b, 0xa7, 0xb1, 0xf8, 0x68 } }

As OID (ISO/ITU-T 128 bits):     2.25.133402206433060340190839298114022668392
As OID (Microsoft):              1.2.840.113556.1.8000.2554.25692.21653.13384.19744.37995.2591655.11663464
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.7231748101454187808.10694685220888770664
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.1683772565.877153568.2490050443.2813458536
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.25692.21653.13384.19744.37995.10123.42929.63592

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     01100100 01011100 01010100 10010101 00110100 01001000 ????1101 00100000
                                 ??010100 01101011 00100111 10001011 10100111 10110001 11111000 01101000
Random bytes:                    [0x645c54953448?d20?46b278ba7b1f868]