Ethereum Foundation, in a proposal aimed at GDPR compliance, to meet GDPR’s storage limitation requirements, applies proto-danksharding (EIP-4844) to reduce the lifespan of transaction blobs to approximately 18 days

Quotes that support claims

The proposal outlines several technologies already being integrated or proposed for Ethereum that help reduce personal data exposure, including proto-danksharding (EIP-4844), which limits transaction blob lifespans to around 18 days, enforcing storage minimization.

Proto-Danksharding (EIP-4844): Blobs of transaction data live off-chain for about 18 days, then prune to KZG commitments—enforcing storage limitation and data minimization.