policy: Adapt vsize based on coinblocks#280
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kwsantiago wants to merge 9 commits intobitcoinknots:29.x-knotsfrom
Open
policy: Adapt vsize based on coinblocks#280kwsantiago wants to merge 9 commits intobitcoinknots:29.x-knotsfrom
kwsantiago wants to merge 9 commits intobitcoinknots:29.x-knotsfrom
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Add a boolean setting to control whether transactions with coin-age priority receive a vsize discount. Default on, disabled in -corecomp.
Log2-based weight discount for transactions with coin-age priority, capped at 50% with a minimum weight floor.
Compute the discount against raw transaction weight in PreChecks. Extend fuzz harness to cover negative extra_weight values.
Test that aged UTXOs receive a vsize discount when enabled, and that the discount is not applied when disabled.
Ari4ka
approved these changes
Mar 7, 2026
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"priority" has historically been confusing by itself. I've been trying to migrate toward calling it "coinblocks" (see minrelaycoinblocks) |
kwsantiago
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Probably need to document the algorithm. Also, this only calculates the discount at mempool entry, and doesn't update it as the inputs age. |
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Closes #147
Factor coinblocks into feerate calculation via vsize discount, making it cheaper to spend high-coinblock coins than quickly-respending dust. Optional via
-coinblocksvsizediscount.