Onchain Settlement

Credit Warehouse

Euler is truly the DeFi Legos Protocol of EVM money markets:

• Euler Earn enables allocation between Credit Lines.
• Each Line of Credit is its own isolated Vault.
• Interest rates and Oracles are set Line of Credit.
• Capital is protected by gated access via hooks.
• Euler Synth was used to recieve USDC, and issue zipUSD.

Euler Earn & Gnosis Zodiac Roles for Allocation.

The warehouse itself is a Gnosis Safe, which holds Euler Earn Shares, and uses Zodiac Roles to set WarehouseAdminModule as the sole Operator.

The WarehouseAdminModule can only take these actions:

• SUPPLY — USDC can be deposited into the EulerEarn Vault.
• APPROVE — USDC can be approved to be pulled into the Warehouse Safe.
• REDEEM — EulerEarn shares can be redeemed to bring USDC back into the Warehouse Safe.
• REPAY — USDC can be set to the redemption queue, which is governed by the Junior Tranche Safe.

The Safe is a share-accumulator: the only naked USDC it ever holds is in transit to the redemption queue.

Isolated Credit Lines

Each credit line has its own isolated cluster:

• An EVK Lien Collateral vault.
• An EVK USDC borrow vault.
• EulerRouter — A dedicated per line oracle router, which is immediately frozen so that the Lien price feed cannot be repointed.
• CREGatingHook — restricts access to borrows until the Bittensor zkProof Credit Oracle approves that borrower. Repay stays permissionless.
• LienCollateralToken — is a 1/1 identity-and-collateral token, whose entire purpose is to fill the collateral slot for that Line of Credit.
• LineAccount — the per-line borrower-of-record, created deterministically from the lien identity and inert after birth.

Euler’s structure lends itself toward this “Single-Use Credit Vault” structure, while Euler Earn maintains allocation amongst the currently active lines of credit.

Interest Rate Curves & Fees

Every line installs a real, flat ~7.5% APR interest model (per-second compounding makes the effective APY ~7.79%) — anchored above the bank warehouse cost of SOFR + 2.25–3.25% and kept below the consumer HELOC rate.

Each draw additionally levies a 0.50% origination fee (Timelock-settable), paid on each line of credit.

Interest accrues into the Warehouse Safe, where it serves as default protection, or is channeled back into programmatic buybacks.