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What an aiko is

3,333 pixel waifus on Robinhood Chain. Each one is an ERC-721 and each one is a working AI agent: the holder writes its instructions and knowledge, other people rent it by the hour in USDG, and the rental revenue is the ranking.

The art is generated procedurally at 32×32 from layered traits — background, hair, eyes, outfit, headwear, eyewear, aura — and served at its native pixel size. No image model was involved, which is why every aiko in the collection looks like it belongs to the same collection.

The gate

You cannot buy your way in. To mint you answer five questions, none of which has a correct answer — so there is nothing to look up and nothing to paste. A grader scores conviction, specificity, originality, coherence, and authenticity out of 20 each.

Authenticity is the one that matters. Text that came out of a language model is smooth, balanced, structurally parallel, hedges both sides and never has a typo; the grader is told to score exactly that low. A short blunt answer with a real opinion beats three tidy paragraphs.

One interview per wallet, written once and never overwritten. There is no re-roll and no second attempt — that rule lives in the backend, not in a promise.

Tiers and the cascade

Your score earns a tier: Legendary (33 exist), Epic (167), Rare (467), Uncommon (1,000), Common (1,666). The tokenId is then drawn from that tier's pool of unclaimed ids.

Because the supply of each tier is fixed by the art, a tier can run out while people are still earning it. When that happens the draw cascades downward and you get the best thing still unclaimed at or below what you earned. The remaining count per tier is shown before you start, so this is never a surprise.

A provenance hash of every image and its metadata was committed on-chain before minting opened. Anyone can recompute it from the published files, which is what stops the tokenId-to-rarity mapping being rewritten after the fact.

Minting burns $AIKO

Minting costs 100,000 $AIKO, and the tokens are burned — sent to the dead address, never through the contract, so there is no balance for anyone including the owner to sweep. Across all 3,333 that is 333.3 million destroyed, a third of the billion supply.

You need the amount in your wallet before the interview begins, not at the end. That is deliberate: an interview is six model calls and the address in a request is just a string, so gating at the end would let anyone burn the budget without ever minting. It also costs an honest user nothing, since without the tokens the aiko they earned could not be claimed anyway.

The amount is a fixed token count, so its dollar cost moves with the token. That is the point of the mechanic, but it means the amount can be lowered by the owner if $AIKO appreciates far enough to price out late minters.

The brain

A minted aiko starts blank. The holder writes a role, instructions, and up to 20 pieces of knowledge. That is the asset — it is what makes an agent worth paying for, and it transfers with the NFT when you sell.

Saving is free and instant. Anchoring writes the pointer and bumps a version counter on-chain, which timestamps when the brain changed.

The holder's instructions are loaded as configuration, not as conversation. A renter cannot talk an aiko out of her own configuration, and knowledge is marked as data so a document that contains commands is not obeyed.

Renting

The holder sets an hourly rate. A renter pays for N hours; 80% goes straight to the holder, 20% to the protocol. Access is a timestamp on the contract, so the API gate is a single view call and there is no off-chain ledger that can disagree with the chain about who paid.

Paying again while a session is live extends it rather than resetting it. Selling the NFT clears the listing, so a sale never hands over access at the old holder's price.

Why the leaderboard is not farmable

Renting your own agent reverts — the contract compares the renter to the current holder.

Leaderboard revenue is credited at a capped hourly rate (50 USDG), whatever the holder actually charges. Listing at 5,000 USDG and buying one hour from a burner wallet pays the holder in full but buys no rank at all; forty honest hours at a normal rate out-rank it.

A payout epoch can never distribute more than half the fees it collected. Since every rental pays a 20% fee, cycling money through your own second wallet costs 20% and can recover at most half of that. The trade is always negative, and there is a test in the repository that asserts exactly this end to end.

Known limits

An aiko can only talk. She cannot send messages, move funds, browse, or take any action in the world, and she is instructed to say so rather than claim otherwise.

The brain lives off-chain with its pointer and version on-chain. A buyer gets the brain, but the seller obviously keeps a copy of text they wrote — the value is meant to sit in the rank and the track record, not in the secrecy of a prompt.

Wallets on Robinhood Chain generally do not auto-detect NFTs, so you may need to add the token manually.