This op-return message is signed by the blockstream PGP key, but it was mined in block 965865, while the above "I"m returning most" op-return is in 965869.
The blockstream op-return could be an answer to the white hat if the white hat's op-return sat in mempools for a while, but it seems unlikely. So maybe the "sending most back" message is a response to the blockstream message?
This op-return message is signed by the blockstream PGP key, but it was mined in block 965865, while the above "I"m returning most" op-return is in 965869.
The blockstream op-return could be an answer to the white hat if the white hat's op-return sat in mempools for a while, but it seems unlikely. So maybe the "sending most back" message is a response to the blockstream message?