# 山海经·八荒异兽·叁 (BAHUANG3) · Free NFT mint on BNB Chain for Binance .ai Agent ID holders
> Chinese-mythology beast NFTs on BNB Smart Chain (chainId 56). FREE: one call, freeMint() (alias mint()), value 0, gas only. 2 free per wallet, or 5 free if the wallet holds a card from Season 2 (0x57CC350b844484Eac0DE444526d295C90F9cCbB5). Gated to wallets holding a Binance / SPACE ID .ai Agent ID (0x60B9262456dE011F7d15a54CdD8c48bAaa8B022F, balanceOf > 0). Optional paid mint 0.0005 BNB per card with double points. 5-day window. No owner, no admin, no withdraw. Verified on Sourcify.

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- NFT contract: 0x2CCb3fA957E69AbD46A6651CC1444EF2Ea9bd591 https://bscscan.com/address/0x2CCb3fA957E69AbD46A6651CC1444EF2Ea9bd591
- Source: https://repo.sourcify.dev/56/0x2CCb3fA957E69AbD46A6651CC1444EF2Ea9bd591
- Agent ID registry: 0x60B9262456dE011F7d15a54CdD8c48bAaa8B022F
- Season 2 contract (holders get 5 free): 0x57CC350b844484Eac0DE444526d295C90F9cCbB5
- Payout wallet (paid BNB forwarded in the same tx): 0x45E2c8a09022914cE00cFce9A93dD3FDa54D8686

## Free mint (price is exactly 0)
Call freeMint() with value 0 (selector 0x5b70ea9f), or mint() (selector 0x1249c58b). No arguments, no keyword, no voucher, no signature.
- Mints all your free cards in one call: 2, or 5 if season2.balanceOf(you) > 0.
- Global free cap 6,000. Check first: quote(wallet, 1) returns (freeLeft, paidLeft, costWei, eligible, open, holder).
- Reverts: "need .ai Agent ID", "free used", "free sold out", "mint ended".

## Paid mint (optional, separate function, never bundled with the free one)
paidMint(uint256 qty) payable, with value = costWei(qty). Overpay is refunded in the same tx.
- Price per card by global paid index: #1-1500 0.0005 BNB, #1501-3000 0.0009 BNB. Max 20 paid per wallet; global paid cap 3,000.
- Points: 1 per free card, 2 per paid card, stored on-chain in points(wallet). The next season reads them for extra free mints, just as this season reads Season 2 holders.
- Reaching 10 paid cards in one wallet auto-mints 2 epic cards, 烛龙 Zhulong and 应龙 Yinglong (token ids 100001+).
- Full set: freeMint(), then paidMint(10) with value costWei(10) (0.005 BNB while under #1500) gives 12 cards (15 for S2 holders) and both epics.

## Rarity (fixed quotas, weighted by remaining supply; randomness from prevrandao)
- Common (1,500 each): 0 九尾狐 Nine-tailed Fox, 1 白泽 Baize, 2 毕方 Bifang, 3 饕餮 Taotie
- Rare (1,000 each): 4 穷奇 Qiongqi, 5 帝江 Dijiang
- Legendary (500 each): 6 鲲 Kun, 7 麒麟 Qilin
- Epic: 8 烛龙 Zhulong, 9 应龙 Yinglong (only via 10 paid)
- beastOf(tokenId) returns the kind; tokenURI = baseURI + kind + ".json".

## Views
freeMinted(), paidMinted(), epicMinted(), totalRevenueWei(), totalPoints(), mintEnd(), freeCount(addr), paidCount(addr), points(addr), freeAllowance(addr), isSeason2Holder(addr), priceAt(n), costWei(qty), quote(addr, qty).

## 中文
持有币安 .ai Agent ID 的钱包调用 freeMint()（value 0，只付 gas）即可免费领取：普通钱包 2 张，持有「八荒异兽·贰」的钱包 5 张。付费可选：paidMint(数量)，value = costWei(数量)，每张 0.0005 BNB，积分翻倍，付满 10 张送烛龙、应龙。合约无 owner、已验证，5 天后截止。