Smart Contracts

Contract addresses

Core Contracts

Contract

Address

BUCK Token

0xdb13997f4D83EF343845d0bAEb27d1173dF8c224

Liquidity Window

0x6E87adb23ac0e150Ca9F76C33Df2AdCae508548E

Liquidity Reserve

0x1A426E3a87368a4851f7443Ff656A054Af872f66

Policy Manager

0x79f86b9E0ac84C7580575089E453431D77905E36

Oracle Adapter

0xa6c5f4D041192C2019E77f679eA02e9684235Fd9

Rewards Engine

0x159c1C0F796a02111334cC280eE001b091a9580C

Collateral Attestation

0x1aEEEf99704258947A9ea77eF021d5e0551c0428

Access Registry

0xbCc6de2423B496cb36C3278dC487EfD9c5C550B6

Administrative Addresses

Role

Address

Admin Wallet

0x376269214bB78b3D4f31d17600499b439c1aCB4b

Treasury Wallet

0x5d105791469064cA0764cfaCfc577c286351CFAD

Distributor Wallet

0xC2a2dbBD627872E78894F3C1c403Fbe1cd4C36df

CAS Attestor

0x6f31810c8e6bFaf3BA486B4b7ce651b023423Fa3

Security

All contracts use the UUPS upgradeable proxy pattern and have been audited by Cyfrin, Spearbit, and SSC.

Admin wallet operations — including contract upgrades and configuration adjustments — are secured by a Fireblocks 4/4 MPC approval system with a TAP (Transaction Authorization Policy) and function-level whitelist. Every admin action requires approval from all 4 MPC key holders before it can execute, and only pre-approved contract functions can be called.

Treasury and Liquidity Reserve withdrawals/operations are also under a separate 4/4 MPC multisig in Fireblocks. No single individual can unilaterally upgrade contracts, change protocol parameters, or move funds.

Collateral Attestation

An off-chain attestor periodically publishes two values to the CollateralAttestation contract (0x1aEEEf99704258947A9ea77eF021d5e0551c0428):

Portfolio value (V) — The current value of protocol-held STRC and other collateral
Haircut coefficient (HC) — A conservative discount applied to the portfolio value

The contract computes the collateral ratio as:

CR = (USDC in Liquidity Reserve + haircutted portfolio value) / BUCK total supply

The protocol currently maintains a CR of ~1.6x, meaning there's $1.60+ backing every $1 of BUCK. If the attestation becomes stale (exceeds a configurable freshness window), mints and refunds are paused automatically until a fresh attestation is published.

For monthly attestation reports, see Independent Reserve Attestations.

Fees

Action

Fee

Applied When

Mint

10 bps (0.10%)

Minting BUCK from USDC via the Liquidity Window

Refund

10 bps (0.10%)

Redeeming BUCK back to USDC via the Liquidity Window

DEX Buy

15 bps (0.15%)

Buying BUCK on Curve or Uniswap

DEX Sell

15 bps (0.15%)

Selling BUCK on Curve or Uniswap

All fees are sent to the protocol Treasury (0x5d105791469064cA0764cfaCfc577c286351CFAD). Fee rates are configurable by the admin via the PolicyManager contract (0x79f86b9E0ac84C7580575089E453431D77905E36) and may change based on protocol health band.