Mint and redemption

Minting and redemption move the fixed constituent vector in and out of the basket vault against BasketToken supply. Both measure real token deltas and route fees to the global non-swap ledger.

#Quoting

quoteMint returns each asset's backing increase plus the selected flat fee. quoteRedeem returns each asset's backing reduction less the selected flat fee. Callers should always quote immediately before submission and pass the quote as explicit per-asset maximums (mint) or minimums (redeem).

mint input_i    = backingIncrease_i + flatFee_i
redeem output_i = backingDecrease_i - flatFee_i

The flat fee tier is selected by scanning the basket's tier array for the greatest threshold not exceeding the action size.

#Minting

The caller supplies per-asset maximums. The Diamond measures inbound receipts, credits only the backing increase to the basket vault, moves the measured fee to the global fee account, and mints the requested BasketTokens.

uint256 shares = 10e18;
uint256[] memory maxIn = basket.quoteMint(basketId, shares);
 
for (uint256 i; i < assets.length; ++i) {
    IERC20(assets[i]).approve(staticsDiamond, maxIn[i]);
}
 
basket.mint(basketId, shares, recipient, maxIn);

The position collateral paths createAndMintBasketCollateral and mintBasketCollateral apply the same quote and fee rules but mint directly into a PositionNFT as basket collateral.

#Redemption

The Diamond burns BasketTokens, reduces basket backing, transfers the receiver's net assets subject to per-asset minimums, and moves the fee to the global fee account. The position path is redeemBasketCollateral. Locked collateral cannot be withdrawn or redeemed.

IERC20(basketToken).approve(staticsDiamond, shares);
uint256[] memory minOut = basket.quoteRedeem(basketId, shares);
 
basket.redeem(basketId, shares, recipient, minOut);

#Where fees go

Primary mint and redemption fees enter the same global non-swap ledger as all other non-swap fees. If the asset has nonzero matured eligible selected stake, 90% accrues to stakers and 10% to treasury; otherwise 100% accrues to treasury. These fees never create basket-specific holder claims — only the configured canonical hook basket-staker allocation enters basket position indexes.