user116980: If a block has much fewer transactions than average, let’s say 63 like 4MB block 774628, will keys have less probability to falsely match against its BIP157-8 compact filter?

user21496: Just ftr. The 1/784931 fpr is for bitcoin core and compatible. Wasabi filter's parameters are different because Wasabi wallets are expected to have more keys than average bitcoin core wallets given coinjoins and remixes.

user208: No, BIP158 basic filters have a fixed false positive rate of exactly 1/784931, regardless of how many elements they contain.

116980: <p>If a block has much fewer transactions than average, let’s say 63 like 4MB block <code>774628</code>, will keys have less probability to falsely match against its BIP157-8 compact filter?</p>
 21496: <p>Just ftr. The 1/784931 fpr is for bitcoin core and compatible. Wasabi filter's parameters are different because Wasabi wallets are expected to have more keys than average bitcoin core wallets given coinjoins and remixes.</p>
 208: <p>No, BIP158 basic filters have a fixed false positive rate of exactly 1/784931, regardless of how many elements they contain.</p>
