a13a649b77
Aere Network public source. Everything here can be checked against the live chain (chain id 2800, https://rpc.aere.network). Scope note, stated up front rather than buried: consensus on chain 2800 is classical secp256k1 ECDSA QBFT. The post-quantum work in this repository is at the signature, precompile, account and transport layers. Nothing here makes the consensus post-quantum, and no document in it should be read as claiming so.
73 lines
2.9 KiB
Solidity
73 lines
2.9 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity 0.8.23;
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import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
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import "@openzeppelin/contracts/access/Ownable.sol";
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/**
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* @title USDC.e — Bridged USDC on AERE Network (Phase 1, Hyperlane Warp Route)
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* @notice ERC-20 wrapper representing locked USDC on Ethereum mainnet,
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* minted on AERE Chain ID 2800 by AereHypERC20Synthetic when a
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* Hyperlane Warp Route deposit message arrives. Burned when a user
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* withdraws back to mainnet.
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*
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* @dev PHASE 1 design intentionally:
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* - Uses a clean OpenZeppelin ERC-20 implementation (NOT the
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* Circle FiatToken vendored bytecode). This is the
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* independent "bridged" form; Circle's USDC native on-AERE
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* graduation requires the Circle Blockchain Due Diligence
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* Process (estimated 18-24 months) and a bytecode-identical
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* FiatTokenV2_2 re-deploy.
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* - Mint and burn are restricted to the canonical
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* AereHypERC20Synthetic contract on AERE (set immutably at
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* deploy). The synthetic is the *only* bridge endpoint that
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* can produce or destroy USDC.e — no admin can mint.
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*
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* Compatibility:
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* - 6 decimals to match Circle native USDC (not the 18 default).
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* - Standard transfer / approve / transferFrom.
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* - No blacklist / pauser surfaces in this Phase 1 version. The
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* Foundation publishes a clear "USDC.e is bridged, not native
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* Circle USDC" disclosure on the /cross-chain page.
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*
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* Reserve attestation:
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* - Locked Ethereum-side USDC backing USDC.e supply is
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* verifiable on-chain: the AereHypERC20Collateral on mainnet
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* holds exactly totalSupply * 1e-12 units of native USDC (the
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* decimal-mismatch divisor). A nightly snapshot is committed
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* by AereNavOracle (Q3 2026 ship).
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*/
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contract USDCe is ERC20 {
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/// @notice The one and only contract that can mint or burn USDC.e.
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address public immutable BRIDGE;
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error OnlyBridge();
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modifier onlyBridge() {
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if (msg.sender != BRIDGE) revert OnlyBridge();
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_;
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}
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constructor(address bridge) ERC20("Bridged USD Coin", "USDC.e") {
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require(bridge != address(0), "USDCe: zero bridge");
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BRIDGE = bridge;
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}
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/// @notice Match Circle USDC's 6 decimals (not OZ default 18).
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function decimals() public pure override returns (uint8) {
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return 6;
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}
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/// @notice Mint by the bridge when a Hyperlane Warp Route message
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/// arrives confirming a corresponding deposit on Ethereum.
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function mint(address to, uint256 amount) external onlyBridge {
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_mint(to, amount);
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}
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/// @notice Burn by the bridge when a user requests withdrawal back to
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/// Ethereum.
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function burnFrom(address from, uint256 amount) external onlyBridge {
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_burn(from, amount);
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}
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}
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