OP_RETURN data at vout=3 is a hash of the filenames, as H = SHA-256d(NAME1 || 0x20 || NAME2 || 0x20 || NAME3)
OP_RETURN · Output 1Block 969,682
WORDS ON THE CHAIN
A message written into Bitcoin.
Public transaction data, shown as written. The writer’s identity and claims are not verified.