Proposal: CIP-56/ERC-20 Middleware
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Abstract
MetaMask-compatible middleware exposing an Ethereum JSON-RPC facade over CIP-56 token contracts, plus a distributed indexer and an Ethereum↔Canton bridge relayer. Any EVM wallet, dapp, explorer, or indexer can transact against Canton-native tokens through the RPC surface it already uses, while Canton's privacy and finality guarantees are preserved. Phase 2 adds fully non-custodial signing via a MetaMask Snap plus an institutional custody path; all deliverables are Apache 2.0 open source.
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