Never heard "vacuum" used that way... maybe they mean "vacuous"? 
Transaction
Hash
1b48d49a8e02fbf69d0691177d3c6ed295252f7d1a766b7da8787f1e6146ead9
Block
543161
· 2018-08-12 18:06
· 307,404 confirmations
Data
topic-message
Size
363 bytes
Fee
371 sats (1.02203858 sat/B)
Inputs (1)
Index
0
Previous Output
3044022038ef6b36f42dede9ffad11022e95c6b09af5d98087d5a786f71de8d764dd199102201548132faaee2328a6973fce33db4a145dba60646fa6471674bdb7de42b611aa41 03bcf251e65c679f2c7ffbf9b1d4d82c8982c04ca8e9d1b5187fa3809f7cb034e3
Outputs (2)
Index
0
Spent
OP_DUP OP_HASH160 59c9d0444d8f3ccc70a16a91797084ccea119f9b OP_EQUALVERIFY OP_CHECKSIG
Index
1
Type
OP_RETURN
OP_RETURN 6d0c 536f75746820416672696361202d20457870726f7072696174696f6e20576974686f757420436f6d70656e736174696f6e202d20426974636f696e3f 4e65766572206865617264202276616375756d2220757365642074686174207761792e2e2e206d617962652074686579206d65616e2022766163756f7573223f2068747470733a2f2f692e696d6775722e636f6d2f69734e677671672e706e67
Raw
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
