Interpret a UUID

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UUID: 
Your input:                      3181d81e-1dc9-4603-8820-717f1fd6e2b3

Various notations:

URN:                             urn:uuid:3181d81e-1dc9-4603-8820-717f1fd6e2b3
URI:                             uuid:3181d81e-1dc9-4603-8820-717f1fd6e2b3
Microsoft GUID syntax:           {3181D81E-1DC9-4603-8820-717F1FD6E2B3}
C++ struct syntax:               { 0x3181d81e, 0x1dc9, 0x4603, { 0x88, 0x20, 0x71, 0x7f, 0x1f, 0xd6, 0xe2, 0xb3 } }

As OID (ISO/ITU-T 128 bits):     2.25.65806361474749524730473225725452673715
As OID (Microsoft):              1.2.840.113556.1.8000.2554.12673.55326.7625.17923.34848.7438111.14082739
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.3567370003714491907.9808964779221902003
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.830593054.499729923.2283827583.534176435
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.12673.55326.7625.17923.34848.29055.8150.58035

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     00110001 10000001 11011000 00011110 00011101 11001001 ????0110 00000011
                                 ??001000 00100000 01110001 01111111 00011111 11010110 11100010 10110011
Random bytes:                    [0x3181d81e1dc9?603?820717f1fd6e2b3]