ZIP 318: do the block-spacing constants rescale if ZIP 218 activates?
A GitHub issue asks whether ZIP 318's block-count constants, such as EXPIRY_MODULUS (34,560 blocks, documented as ~30 days at 75-second spacing), would rescale if ZIP 218 reduces the block target to 25 seconds. The issue notes that ZIP 218 does not mention ZIP 318 or these constants, and that downstream wallets (chainapsis/vizor-wallet, zingolabs/zingolib) have copied the constants, so clarification is needed before NU7.
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An open proposal—not a live product.
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- Zcash Improvement Proposals
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ZIPs
Zcash Improvement Proposals
Radar summary of the original source
Related activity
- Original source
[ZIP 312] Specify key generation, change randomizer handling
Changes to randomizer handling after I realized that it couldn't possibly be generated using the message as an input. It does simplify things too. Some additional fixes (using "Re-Randomized FROST" consistently; updating Owners) fixes #1051 Referenced issue #1051: [ZIP 312] Complete the specification for FROST key generation. This needs to be compatible with quantum resilience.
- Original source
NU7: ZIP 218 rounding lowers the supply cap that ZIP 237 claims to keep
Found by @str4d. ZIP 218 sets the post-NU7 subsidy to floor(MaxBlockSubsidy / (2·3·2^Halving)), so three 25-second blocks pay up to 2 zatoshi less than one 75-second block. ZIP 218 states the resulting shortfall from MAX_MONEY: 0.6720 + (H_3 − A)/10^8 ZEC, of which 0.1848 ZEC predates NU7. ZIP 237 reissues only the NSM Value Balance: pre-NU6 unclaimed value plus removed funds. The rounding loss never enters it, so Mainnet issuance converges to MAX_MONEY minus 67,200,000 + (4,406,400 − A) zatoshi, where A is the NU7 activation height.
- Original source
More NU7 ZIP fixes
Proposal 1403 is tracked from its source repository.