dEURO

# Bridge to other Chains

Move dEURO and DEPS between Ethereum mainnet and supported Layer 2 networks.

dEURO is canonically minted, redeemed and governed on Ethereum mainnet. To make the token usable for payments and DeFi integrations on cheaper chains, dEURO is also deployed as a bridged token on the OP Stack networks Optimism and Base. The bridged contracts mirror the mainnet supply 1:1 — they hold no independent issuance authority.

# How L2 dEURO Works

The bridged token is an instance of BridgedToken.sol, an IOptimismMintableERC20. The official OP Stack standard bridge (0x4200000000000000000000000000000000000010) is the only address authorised to mint or burn the L2 token. Whenever the bridge receives mainnet dEURO into its escrow contract, it mints the same amount of L2 dEURO; when the L2 dEURO is sent back, the bridge burns it and releases mainnet dEURO.

This means:

  • L2 dEURO is always backed 1:1 by mainnet dEURO sitting in the OP Stack bridge contract.
  • No mint operations are possible on L2 directly — minting hubs, savings, governance, and bridges live exclusively on mainnet.
  • The dEURO token contract on Optimism and Base shares the same address: 0x1B5F7fA46ED0F487F049C42f374cA4827d65A264.

DEPS is bridged on the same principle for Base only:

Chain Token Address
Ethereum Mainnet dEURO 0xbA3f535bbCcCcA2A154b573Ca6c5A49BAAE0a3ea (opens new window)
Optimism dEURO 0x1B5F7fA46ED0F487F049C42f374cA4827d65A264 (opens new window)
Base dEURO 0x1B5F7fA46ED0F487F049C42f374cA4827d65A264 (opens new window)
Base DEPS 0x5F674bF6d559229bDd29D642d2e0978f1E282722 (opens new window)

The mainnet dEURO contract is unchanged — it does not need to know about the L2 deployments. Only the L2 contracts are bridge-aware.

# Moving dEURO between Mainnet and L2

The recommended path is the standard OP Stack bridge UI for each network:

Both UIs accept dEURO as a custom ERC-20: paste the mainnet contract address and the bridge picks up the bridged token automatically because BridgedToken exposes the IOptimismMintableERC20.l1Token() view.

Direction matters for finality.

  • Mainnet → L2: typically confirms within minutes.
  • L2 → Mainnet: subject to the OP Stack challenge window (currently 7 days on both Optimism and Base) before the withdrawal is finalised on L1.

Always read the warnings in the official bridge UI before initiating a withdrawal — once started, an L2 → L1 withdrawal cannot be cancelled.

# What You Can and Cannot Do on L2

The L2 deployments are intentionally narrow: they exist to make dEURO usable for payments and as a DeFi building block on cheaper chains. Everything that involves protocol-level rights stays on mainnet.

Operation Available on Mainnet Available on Optimism Available on Base
Hold and transfer dEURO ✅ ✅ ✅
Use dEURO in AMMs, lending markets, payments ✅ ✅ ✅
Mint dEURO against collateral ✅ ❌ ❌
Open or adjust positions ✅ ❌ ❌
Earn savings interest ✅ ❌ ❌
Swap via stablecoin bridges ✅ ❌ ❌
Invest in / redeem nDEPS ✅ ❌ ❌
Govern the protocol ✅ ❌ ❌
Hold and transfer DEPS ✅ ❌ ✅
Wrap nDEPS into DEPS / unwrap ✅ ❌ ❌

If you want to earn interest or borrow, bridge your dEURO to mainnet first.

# Security Properties

  • No L2 minting authority. The L2 token only mints in response to the official OP Stack bridge depositing mainnet dEURO into escrow. There are no admin keys or upgrade hooks on the L2 contract.
  • Burn on withdraw. Bridging back burns the L2 supply before mainnet dEURO is released, preventing double-counting.
  • Address parity. The same address on Optimism and Base reduces the risk of phishing — any other address claiming to be dEURO on those chains is fake.
  • Audit lineage. BridgedToken.sol is part of the d-EURO/smartContracts (opens new window) repository and inherits the audit coverage of the V3 migration scope.

# Adding dEURO to Your Wallet (L2)

For MetaMask and most wallets, add a custom token:

  • Network: Optimism or Base
  • Token contract address: 0x1B5F7fA46ED0F487F049C42f374cA4827d65A264
  • Symbol: dEURO
  • Decimals: 18

For DEPS on Base:

  • Token contract address: 0x5F674bF6d559229bDd29D642d2e0978f1E282722
  • Symbol: DEPS
  • Decimals: 18

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