Event Table

Corrected event-to-role mapping for the Fira incentive indexer, with analysis of issues found in the original table.

Fixed Rate Market

Role	Event	Contract	Purpose
BFR	Borrow	LendingMarket	Position increase
BFR	Repay	LendingMarket	Position decrease
BFR	Liquidate	LendingMarket	Forced position closure
BFR	Swap	FiraMarket	BFR qualification check
BT	Transfer	BondToken	All balance changes (mint, burn, transfer)
BT	Borrow	LendingMarket	For "subtract borrowed" rule
BT	Repay	LendingMarket	For "subtract borrowed" adjustment
CT	Transfer	CouponToken (ERC20)	All balance changes (mint, burn, transfer)
CT	RedeemInterest	CouponToken	Interest redemption
LP	Mint	FiraMarket	LP creation
LP	Burn	FiraMarket	LP destruction
LP	Transfer	FiraMarket	LP token transfers

Variable Rate Market

Role	Event	Contract	Purpose
VRB	Borrow	LendingMarket	Position increase
VRB	Repay	LendingMarket	Position decrease
VRB	AccrueInterest	LendingMarket	Shares-to-USDC conversion update
VRB	Liquidate	LendingMarket	Forced position closure
VRL	Deposit	SisuVault	Position increase (ERC4626)
VRL	Withdraw	SisuVault	Position decrease (ERC4626)
VRL	Transfer	SisuVault	Vault share transfers

USL Migrator

Role	Event	Contract	Purpose
USLC	SupplyCollateral	LendingMarket	Position increase
USLC	WithdrawCollateral	LendingMarket	Position decrease
USLC	Liquidate	LendingMarket	Collateral seizure
USLL	Borrow	LendingMarket	Position increase
USLL	Repay	LendingMarket	Position decrease
USLL	Liquidate	LendingMarket	Forced position closure

Issues found and corrected

Change	Detail
Removed	BT / Mint / FiraMarket — wrong contract; FiraMarket.Mint is for LP tokens
Removed	BT / Burn / FiraMarket — wrong contract; same reason
Removed	CT / Mint / CouponToken — redundant with CT Transfer (from=0x0)
Removed	CT / Burn / CouponToken — redundant with CT Transfer (to=0x0)
Added	BFR / Swap / FiraMarket — required for BFR qualification per spec
Added	BFR / Liquidate / LendingMarket
Added	LP / Transfer / FiraMarket
Added	VRB / Liquidate / LendingMarket
Added	VRL / Transfer / SisuVault
Added	USLC / Liquidate / LendingMarket
Added	USLL / Liquidate / LendingMarket

Key corrections explained

BT Mint/Burn: Wrong contract (Critical) — The original table listed BT Mint/Burn on FiraMarket, but BT is created/destroyed by CouponToken.mintBC() / CouponToken.redeemBC(). FiraMarket Mint/Burn events are about LP tokens, not BT. The ERC20 Transfer event on BondToken already captures mints (from = address(0)), burns (to = address(0)), and transfers.

BFR qualification requires Swap — The spec states borrowers must be verified by tracking both the borrow event and a swap event plus USDC transfer. The Swap event from FiraMarket confirms the borrower actually swapped BT for USDC.

Liquidate event missing — EventsLib.Liquidate fires on forced position closure and impacts BFR, VRB, USLC, and USLL. Without it, the TWAP will be incorrect for liquidated users.

Event signatures reference

LendingMarket (EventsLib)

event Borrow(Id indexed id, address caller, address indexed onBehalf, address indexed receiver, uint256 assets, uint256 shares);
event Repay(Id indexed id, address indexed caller, address indexed onBehalf, uint256 assets, uint256 shares);
event SupplyCollateral(Id indexed id, address indexed caller, address indexed onBehalf, uint256 assets);
event WithdrawCollateral(Id indexed id, address caller, address indexed onBehalf, address indexed receiver, uint256 assets);
event AccrueInterest(Id indexed id, uint256 prevBorrowRate, uint256 interest, uint256 feeShares);
event Liquidate(Id indexed id, address indexed caller, address indexed borrower, uint256 repaidAssets, uint256 repaidShares, uint256 seizedAssets, uint256 badDebtAssets, uint256 badDebtShares);

BondToken / CouponToken (ERC20)

event Transfer(address indexed from, address indexed to, uint256 value);

CouponToken (IBCToken)

event RedeemInterest(address indexed user, uint256 interestOut);

FiraMarket (IPMarket)

event Mint(address indexed receiver, uint256 netLpMinted, uint256 netFwUsed, uint256 netBtUsed);
event Burn(address indexed receiverFw, address indexed receiverBt, uint256 netLpBurned, uint256 netFwOut, uint256 netBtOut);
event Swap(address indexed caller, address indexed receiver, int256 netBtOut, int256 netFwOut, uint256 netFwFee, uint256 netFwToReserve);

SisuVault (ERC4626)

event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
event Withdraw(address indexed sender, address indexed receiver, address indexed owner, uint256 assets, uint256 shares);
event Transfer(address indexed from, address indexed to, uint256 value);

Implementation notes

• Market ID filtering: All LendingMarket events carry Id indexed id. The indexer must filter by the correct market IDs to distinguish BFR vs VRB vs USLL markets.

• No double counting: BT/CT held inside LP pool addresses or router addresses must be excluded from BT/CT buckets. Maintain a set of excluded addresses.

• AccrueInterest for BFR/USLL: If position value must reflect accrued interest (not just principal), add AccrueInterest to those roles.

• CT in LP pools: If external AMM pools exist for CT (not FiraMarket), additional pool-specific events would be needed.