ZIP 308: Update migration parameters to match zcash/zcash#7132.#1290
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Update the Sprout-to-Sapling migration parameters to reflect the faster schedule implemented in zcash/zcash#7132: - Reduce the batch interval from 500 blocks to 100 blocks (triggering height 99 modulo 100). - Reduce the expiry delta from 450 to 50 blocks. - Introduce a two-range exponent distribution: 8..10 inclusive when the remaining amount to migrate exceeds 1 ZEC, falling back to the original 6..8 range otherwise. Closes zcash#1246. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Closes #1246.
Updates the Sprout-to-Sapling migration parameters to reflect the
faster schedule implemented in zcash/zcash#7132:
height `99 mod 100`).
amount to migrate exceeds 1 ZEC, falling back to the original 6..8
range otherwise.
The Rationale was updated to note that the existing simulation table
reflects the original parameters, and the "Support in zcashd" section
gained an entry for zcash/zcash#7132. The 0.01 ZEC end-of-migration
threshold (`CENT` in the C++ implementation) is unchanged.
Filed with Claude Code assistance.