-Milestone 1 focuses on implementing core protocol-level data structures and transaction types to enable privacy primitives within an EVM-compatible Substrate chain. Concretely, we introduce Merkle trees for deposit commitments, define a new Shield transaction type, extend block headers with a commitment root, and integrate these with a fork of the EVM execution engine (SputnikVM). We also provide a node template and baseline benchmarks for the primitive data types.
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