RIP-7876 sets a standard address for the ERC-7802 token bridge address trusted by ERC-20 tokens that support ERC-7802 Crosschain minting/burning.
ERC-7802 proposed a minimal interface for crosschain minting/burning of ERC-20 tokens. The token is requires to trust a bridge address and allow it to call crosschainMint/crosschainBurn. The bridge address would typically be immutable and affect the token’s address as determined by CREATE2.
EIP-7587 reserved a range for standardized precompiles/predeploys used by rollups. The proposal makes use of this range to reserve the token bridge address.
By standardizing the bridge address we gain two advantages:
- Tokens can be deployed in a future-proof manner on every chain. If/when a rollup adds native ERC-7802 capability to their canonical bridge, existing immutable tokens can benefit from the improved interoperability even though they were deployed earlier.
- Tokens can deploy to the same CREATE2 address if they wish. Having the same bridge address means they don’t need to pass a different argument during deployment.
We propose that rollups that implement a native ERC-7802 bridge will use this standard address to help token devs with interop and avoid fragmentation.