Token name: Work

Token symbol: WORK

Robinhood Chain 4663. Builders address B = 0xc9EAFE33A510a3a3d95A94c4f85AdaF6a3EA12a0 (EOA). Owner = requester wallet. Contracts: WorkHook (Uniswap v4 hook on the WORK/IMD pool) and WorkersNFT. IMD on this chain = 0x5f7bb59365ce557c26dbcaa4ee9d39a4b95b7127. All owner changes are bounded and emit events; every parameter has a view.

1. WorkHook: takes its fee in the swap callbacks (beforeSwap/afterSwap) on every buy and sell, default 0.75% (2% total with the launch's 1.25%), owner may set 0 to 8.75% max. While the NFT mint runs, hook fees go 100% to B. After the mint ends (sold out or endMint): stakerShareBps (default 10000, owner may set 9000-10000, so B gets at most 10%) goes to WorkersNFT for stakers, the rest to B; if nothing is staked, all to B.

2. WorkersNFT (ERC-721, max 3,333). Owner levers (UNICRED lesson): setCap(newCap) lowers the cap to any value >= minted, never raises; endMint() stops minting forever (cap = minted) and starts the post-mint phase; pause()/unpause() halts minting and WORK mining in an emergency, each pause auto-expires after 72 h.

• Mint by proof of work: keccak256(abi.encode(DOMAIN, chainid, this, keccak256(abi.encode(anchorHash, prevWork)), msg.sender, nonce)) < target; anchorHash = blockhash at most 250 blocks old; one mint per block; retarget every 8 mints toward 10 s; target doubles after 300 s idle; 9 epochs of 370 (+3), min difficulty +1 bit per epoch; owner may move the floor +-2 bits.
• Paid in IMD (transferFrom, permit if supported, no ETH): price per epoch [0.25,0.5,0.75,1.25,1.75,2.5,3.25,4,5] IMD, never above 5; owner may scale prices 0.5x-1x.
• Token id = pool[hash % remaining] (swap-and-pop, no reveal, no reserved ids, no team mint).
• Overclocked if the hash beats target by >= 4 extra bits: tokenURI = baseURI + "oc/" + id + ".json", else baseURI + id + ".json". Initial baseURI = ipfs://bafybeibmkvtnptsqztdvsm5sh3avormdnfyarbxpgdlcj6bmg37qchhqve/ (owner may update it).
• Everyone mints on equal terms: no allowlist, no free mints, no difficulty discounts.

3. Money (automatic, in IMD):

• Each mint: 65% stakers, 25% buyback balance, 10% to B.
• Marketplaces: activated (earning) workers stay in the holder's wallet and transfer/list normally (activation and unclaimed WORK move with the token); never block transfers of unstaked workers. Staked workers are held by the contract, so they cannot be listed while staked (no fake floor); unstaking returns them. Stake and unstake are real ERC-721 transfers that emit Transfer, so marketplaces update ownership on their own. Implement ERC-4906 (supportsInterface 0x49064906): emit BatchMetadataUpdate when baseURI changes and MetadataUpdate when a token's metadata changes.
• Staking: escrow the NFT for 7/14/30 days = weight 1x/2x/4x, no early exit; stakers claim mint IMD and hook rewards pro-rata by weight; mint share with no stakers goes to buyback.
• buyback(): anyone, max 100 IMD per call, once per 60 s, swaps IMD to WORK in the WORK/IMD pool and burns it.
• WORK supply: 10% swarm, 70% pool, 20% to B (5% B's own, then B deposits 100M as the mining pool and 50M as the burn pool).

4. After the mint ends:

• activate(tokenId): one time, fee to B, default 0.15 IMD, owner may set 0-0.5 IMD; stays with the token on transfer.
• Workers keep working passively (no hashing, no device online): activated, unburned workers earn WORK from the mining pool every second. 8 eras from mint end: era k (0..7) lasts 7*2^k days and emits 12.5M WORK, split equally among all activated workers (reward-per-worker accumulator, updated on activate, burn and claim). claimWork(tokenIds) pays the holder or staker; unclaimed WORK stays with the token on transfer. Stops when the pool is empty.
• Burn: any holder may burn an unstaked worker for burnPool / workers minted (fixed at mint end, ~15,000 WORK); burned workers stop mining.

Safety: sweep(token) to B for anything sent by mistake (incl. WETH, ETH) but never staker IMD, the buyback balance, the mining pool or the burn pool. ERC-2981 royalty 5% to B, max 10%. Not upgradeable. No minting outside proof of work, no owner path to user funds.

Tests: Foundry incl. fuzz on work checks, retargets, id picking, splits, staking escrow, hook split, activation, passive accrual per era, burn reward, sweep limits; then an adversarial security review.