XFTInterestRateSwap
COUNTERPARTIES
XFTInterestRateSwap 0x3F2Dbe13CFA87150F4ae93406f8032767bdc59D9
FUNCTIONS
initiateSwap(): Create swap with atomic deposits
updateFloatingRate(): Admin updates rate before maturity
settleSwap(): Admin settles with preimage verification
refundSwap(): Parties recover funds after expiry
calculatePayments(): Preview settlement amounts
getSwapDetails(): View swap parameters
Swap 1 user → IRS: notional USDXT 2 user2 → IRS: notional USDXT 3 admin updates floatingRate in IRS 4 time passes to maturity 5 admin calls settleSwap with preimage 6 IRS calculates fixedPayment and floatingPayment 7 IRS sends net interest USDXT to owed party 8 IRS returns notionals to user and user2
SEQUENCE
INITIATE SWAP
1 user calls initiateSwap(swapId,counterparty,notional,fixedRate,floatingRate,maturity,hashlock,dayCount)
2 contract pulls notional from fixedPayer and floatingPayer atomically
3 emits NotionalDeposited and SwapInitiated
RATE MANAGEMENT
4 admin calls updateFloatingRate(swapId,newRate) before maturity
5 emits FloatingRateUpdated
SETTLEMENT
6 after block.timestamp ≥ maturity, admin calls settleSwap(swapId,preimage)
7 contract verifies hashlock, calculates fixed vs floating using dayCount
8 returns notionals and net interest atomically
9 emits SwapSettled
10 deletes swap storage for gas reclaim
REFUND
11 if not settled and block.timestamp ≥ maturity, either party calls refundSwap(swapId)
12 returns both notionals atomically
13 emits SwapRefunded and deletes storage
CONTRACT ABI
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"swapId","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"newRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"FloatingRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"swapId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"fixedPayer","type":"address"},{"indexed":true,"internalType":"address","name":"floatingPayer","type":"address"},{"indexed":false,"internalType":"uint256","name":"notionalAmount","type":"uint256"}],"name":"NotionalDeposited","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"swapId","type":"bytes32"},{"indexed":true,"internalType":"address","name":"fixedPayer","type":"address"},{"indexed":true,"internalType":"address","name":"floatingPayer","type":"address"},{"indexed":false,"internalType":"uint256","name":"notionalAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fixedRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"floatingRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"maturity","type":"uint256"},{"indexed":false,"internalType":"bytes32","name":"hashlock","type":"bytes32"},{"indexed":false,"internalType":"enum XFTInterestRateSwap.DayCountConvention","name":"dayCount","type":"uint8"}],"name":"SwapInitiated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"swapId","type":"bytes32"},{"indexed":false,"internalType":"address","name":"refunder","type":"address"}],"name":"SwapRefunded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"swapId","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"fixedPayment","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"floatingPayment","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"netPayment","type":"uint256"},{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"bytes32","name":"preimage","type":"bytes32"}],"name":"SwapSettled","type":"event"},{"inputs":[],"name":"ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"USDXT","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"}],"name":"calculatePayments","outputs":[{"internalType":"uint256","name":"fixedPayment","type":"uint256"},{"internalType":"uint256","name":"floatingPayment","type":"uint256"},{"internalType":"uint256","name":"netPayment","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"}],"name":"getSwapDetails","outputs":[{"internalType":"address","name":"fixedPayer","type":"address"},{"internalType":"address","name":"floatingPayer","type":"address"},{"internalType":"uint256","name":"notionalAmount","type":"uint256"},{"internalType":"uint256","name":"fixedRate","type":"uint256"},{"internalType":"uint256","name":"floatingRate","type":"uint256"},{"internalType":"uint256","name":"maturity","type":"uint256"},{"internalType":"bytes32","name":"hashlock","type":"bytes32"},{"internalType":"enum XFTInterestRateSwap.DayCountConvention","name":"dayCount","type":"uint8"},{"internalType":"bool","name":"settled","type":"bool"},{"internalType":"bool","name":"refunded","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getUSDXTAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"},{"internalType":"address","name":"_floatingPayer","type":"address"},{"internalType":"uint256","name":"_notionalAmount","type":"uint256"},{"internalType":"uint256","name":"_fixedRate","type":"uint256"},{"internalType":"uint256","name":"_floatingRate","type":"uint256"},{"internalType":"uint256","name":"_maturity","type":"uint256"},{"internalType":"bytes32","name":"_hashlock","type":"bytes32"},{"internalType":"enum XFTInterestRateSwap.DayCountConvention","name":"_dayCount","type":"uint8"}],"name":"initiateSwap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"}],"name":"refundSwap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"},{"internalType":"bytes32","name":"_preimage","type":"bytes32"}],"name":"settleSwap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"}],"name":"swapExists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"swaps","outputs":[{"internalType":"address","name":"fixedPayer","type":"address"},{"internalType":"address","name":"floatingPayer","type":"address"},{"internalType":"uint256","name":"notionalAmount","type":"uint256"},{"internalType":"uint256","name":"fixedRate","type":"uint256"},{"internalType":"uint256","name":"floatingRate","type":"uint256"},{"internalType":"uint256","name":"startTime","type":"uint256"},{"internalType":"uint256","name":"maturity","type":"uint256"},{"internalType":"bytes32","name":"hashlock","type":"bytes32"},{"internalType":"enum XFTInterestRateSwap.DayCountConvention","name":"dayCount","type":"uint8"},{"internalType":"bool","name":"notionalDeposited","type":"bool"},{"internalType":"bool","name":"settled","type":"bool"},{"internalType":"bool","name":"refunded","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_swapId","type":"bytes32"},{"internalType":"uint256","name":"_newRate","type":"uint256"}],"name":"updateFloatingRate","outputs":[],"stateMutability":"nonpayable","type":"function"}]Last updated