XUIDs for SNIA SDC XAM puzzler

final: AAA6AwAVqigxMjIxOTI3NjI1ODAx
third stage: AAA6AwAVSX0xMjIxOTI4OTQzMjU5
second stage: AAA6AwAVd0gxMjIxOTMwODk0NzQy
first clue: AAA6AwAVproxMjIxOTQ0MjYxNTEy