Transcripts

Soft Fork Proposals Analysis

Date

21 November, 2024

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Taproot

BenefitsCost/risks
Larger anonsetsEasier/cheaper jpegs
Cost effectivenessRaised script limits - yet unknown possibilities
Fixed sighashTemporary splitting of anonymity set due to new address type
Schnorr - batch validation, PTLC/Musig/FROSTMore complexity
Less bandwidth for signersQuantum risk
Raised script limits -> more capable scriptsGeneral soft fork risks

CTV

BenefitsCost/risks
Reduced interactivity in some shared UTXO protocols e.g. ArkGeneral soft fork risks
Timeout trees
Congestion control

CAT

BenefitsCost/risks
Trustless bridging to sidesystems: Scaling, Privacy, More expressivity (safer/easier languages than Script)General soft fork risks
Non-equivocation contractsBigger txs could lead to harder knapsack problem -> miner centralization?
Makes multiplication in script more efficientMEVil: Miner enforced tokens

Question: Did we do this backward? Start with use-cases and see which soft forks enable/fix them?

If no one uses the soft fork, then the drawbacks don't matter (but neither do the benefits) (well, except for the general risk of soft fork, so if we expect no one to use it, why do it?)

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