Interpret a UUID

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UUID: 
Your input:                      81b2e666-9fe3-4caf-8c83-0c18e1384f10

Various notations:

URN:                             urn:uuid:81b2e666-9fe3-4caf-8c83-0c18e1384f10
URI:                             uuid:81b2e666-9fe3-4caf-8c83-0c18e1384f10
Microsoft GUID syntax:           {81B2E666-9FE3-4CAF-8C83-0C18E1384F10}
C++ struct syntax:               { 0x81b2e666, 0x9fe3, 0x4caf, { 0x8c, 0x83, 0x0c, 0x18, 0xe1, 0x38, 0x4f, 0x10 } }

As OID (ISO/ITU-T 128 bits):     2.25.172399313382037668122433728962406928144
As OID (Microsoft):              1.2.840.113556.1.8000.2554.33202.58982.40931.19631.35971.792801.3690256
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.9345785505190726831.10124949688256319248
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.2175985254.2682473647.2357398552.3778563856
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.33202.58982.40931.19631.35971.3096.57656.20240

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     10000001 10110010 11100110 01100110 10011111 11100011 ????1100 10101111
                                 ??001100 10000011 00001100 00011000 11100001 00111000 01001111 00010000
Random bytes:                    [0x81b2e6669fe3?caf?c830c18e1384f10]

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