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Stable Vaults

Concrete’s Stable Vaults let you deposit USDT or frxUSD early to have your funds automatically deployed on the Stable Network from day one.

The Stable Network​

Stable is an institutional-grade blockchain built for stablecoins, designed to support efficient yield, liquidity, and settlement at scale.

By participating through Concrete vaults, users provide early liquidity and help bootstrap the ecosystem while earning rewards.

What Are Stable Vaults?​

Stable Vaults are vaults that accept deposits ahead of the Stable Network launch, and they have been earning yield from day one.

After you deposit, you’ll receive receipt tokens representing your position.

tip

The Stable vault supports USDT and frxUSD. Rewards will be handled via Merkl. Concrete points will be additional to the rewards.

Rewards​

  • You’ll earn Concrete Points during the campaign
  • Any rewards are distributed through Merkl
tip

Check app.merkl.xyz for live reward tracking once the campaign launches

Timeline​

  1. Deposits Open — Users can deposit to Stable vaults (October 23, 2025).
  2. Claim — Users will claim their vault shares to the Stable Network. During this process, you’ll claim your vault shares on Stable, which burns your existing vault shares on Ethereum L1 and mints the same number of new shares on the Stable Network.
  3. Withdrawals Enabled — Once bridging completes, users can enter withdrawal queue on December 13th.
  4. 7-Day Withdrawal Queue — After initial unlocks, withdrawals follow a standard queue for smooth liquidity management.
tip

Any funds left in the Stable vault after migration will continue to earn yield directly on the Stable Network.

How to Deposit​

  1. Navigate to the campaign page stable.concrete.xyz
  2. Click Connect Wallet and choose your preferred wallet (e.g., MetaMask)
  3. Select USDT or frxUSD
  4. Enter the amount of stablecoins that you want to deposit
  5. Approve the vault by providing wallet permission to spend your stablecoin
  6. Confirm the deposit by signing the deposit transaction in your wallet
  7. After confirmation, you’ll receive ctStableUSDT or ctStablefrxUSD representing your deposit.

After Bridging Complete​

  • Your balance and vault TVL will become visible
  • You can see your deposited position under My Deposits

Withdrawals​

Withdrawals occur on the Stable Network once bridging is complete.

  • Withdrawal queue opens
  • Once the queue activates, requests are processed in a 7-day withdrawal queue
  • The app will clearly display withdrawal status (“In Queue”, “Processing”, “Ready to Claim”)
  • Once processed, your tokens become claimable directly from the Earn app
tip

When the campaign ends, any remaining vault balances will continue accruing yield until withdrawn.