This is a quote from the book "On Zero Confirmation Transactions" by Chris Pacia
...rchants and don’t want to take part in an activity is clearly immoral and likely also illegal. Now to clarify, there is a lesser form of replace-by-fee, called “first-seen-safe” which is u seful for bumping transaction fees on transactions that get stuck, but does not allow double spending. The “full” replace-by-fee we are discussing here has no other purpose but to allow mine rs to accept fees in exchange for helping to defraud merchants.

You would think that this would be a policy that should be roundly denounced and discouraged at every turn; yet in th...
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