Interpret a UUID

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UUID: 
Your input:                      a81e972d-43db-4b0f-88ff-862d5644359d

Various notations:

URN:                             urn:uuid:a81e972d-43db-4b0f-88ff-862d5644359d
URI:                             uuid:a81e972d-43db-4b0f-88ff-862d5644359d
Microsoft GUID syntax:           {A81E972D-43DB-4B0F-88FF-862D5644359D}
C++ struct syntax:               { 0xa81e972d, 0x43db, 0x4b0f, { 0x88, 0xff, 0x86, 0x2d, 0x56, 0x44, 0x35, 0x9d } }

As OID (ISO/ITU-T 128 bits):     2.25.223469138427739980897409564921750107549
As OID (Microsoft):              1.2.840.113556.1.8000.2554.43038.38701.17371.19215.35071.8793430.4470173
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.12114286268340980495.9871756437498377629
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.2820577069.1138445071.2298447405.1447310749
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.43038.38701.17371.19215.35071.34349.22084.13725

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     10101000 00011110 10010111 00101101 01000011 11011011 ????1011 00001111
                                 ??001000 11111111 10000110 00101101 01010110 01000100 00110101 10011101
Random bytes:                    [0xa81e972d43db?b0f?8ff862d5644359d]