ABTC Security & Smart Contracts

1. ABTC – Astral BTC Wrapper (Fraxtal)

Blockchain: Fraxtal

Smart contract address 0xfE2A4651B142B96EB6c6EDfF61C1333e0cAB4BB0 This is an multi-chain ERC20 token contract deployed through the Axelar interchain token service.

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2. WBTC – Wrapped Bitcoin (Collateral Token on Ethereum)

Blockchain: Ethereum mainnet

Smart contract address 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599

What this contract does (short) This is the WBTC ERC-20 token contract, representing BTC 1:1 on Ethereum. In the ABTC strategy, WBTC from this contract is used as collateral in Curve’s WBTC lending market to borrow crvUSD (without selling BTC). WBTC itself follows a merchant–custodian model where each token is backed by BTC in custody with on-chain proof of reserves.

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3. Resupply – sfrxUSD / Stablecoin Leverage Market

Blockchain: Ethereum

Smart contract address sfrxUSD market: 0xC5184cccf85b81EDdc661330acB3E41bd89F34A1

What this contract does (short) This Resupply market lets users lend crvUSD or frxUSD into underlying Curve Lend / Fraxlend markets while borrowing reUSD against those positions. In the ABTC strategy, borrowed crvUSD is supplied here to create a leveraged stablecoin yield position. The contract logic follows Resupply’s model of using yield-bearing stablecoins as collateral to “boost” yields.

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4 WBTC / Curve Lend Market

Blockchain: Ethereum

Smart contract address WBTC Curve Lend market: 0x2d8ecd48b58e53972dBC54d8d0414002B41Abc9D

What this contract does (short) This contract allows users to deposit WBTC collateral to borrow crvUSD tokens.