Namespace storage for now and for a verkle EVM
summary
Defines ERC-7201 as a deterministic derivation for namespace storage and describes an implementation shipped in OpenZeppelin v5 that computes storage slots by hashing a seed, subtracting one to escape Solidity’s default grammar, then hashing again so names don’t collide with root slots. Includes a natspec convention and Hardhat/Fry tooling to extract and verify layouts, but no fully automatic on-chain check yet. Aligns derived slots to Verkle buckets by trimming the final byte to keep related slots cheap; implemented and used, but formal collision proofs remain incomplete.
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chapters (6)
- 0:00Introduction
- 2:49Upgradeable contract challenges
- 3:52OpenZeppelin 5.0 storage namespaces
- 6:16Deriving storage namespaces safely
- 8:42Verkle trees and buckets
- 10:51Summary
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