Ever sent a small amount and paid a bigger fee than a large payment the week before? Same wallet, same software. The difference is which coins the wallet picked. A wallet spends coins whole, so a payment built from nine small coins costs about five times the bytes of one built from a single coin.
The new Rabbit Hole opens Bitcoin Core’s wallet and shows:
– the three costs of every pick: the fee now, the fee a change output will cost later, and which of your addresses get linked together
– the four algorithms Core runs on every payment (Branch and Bound, Knapsack, Single Random Draw, CoinGrinder) and the one score that picks the winner
– why your Core wallet has been quietly consolidating with every cheap payment since December 2024, and the pay-now-or-pay-later arithmetic for doing it on purpose
– the honest limits: the score is a fee score with no privacy term, and no selection undoes a reused address
Free, no ads, no affiliate links, no wallet recommendations: https://www.learnbitcoin.com/rabbit-hole/coin-selection
submitted by /u/LearnBitcoinCom
[link] [comments]
