Two axes that never touch

Every coin has art and capital, and they are drawn apart. The art comes from a random seed and an art slot. The capital is the USDC you put in at mint: 5, 10, 25 or 50. You choose the amount; you do not choose the art, and paying more buys no better odds. A 5 USDC coin can be a Master Coin. A 50 USDC coin can be plain.

Where the money sits

The contract deposits your USDC into a vault on Base that follows the ERC-4626 standard and keeps the shares under your coin. The vault lends the USDC out and the shares grow in value. The coin's net asset value is what its shares convert to today. Burn the coin and the contract sends you the backing plus the yield earned, minus 10% of that yield, which goes to the author. That is the whole fee. The mint price is the backing, nothing on top. Yield can be claimed without burning; the coin keeps its record of everything it ever earned.

A coin can be burned 30 days after its mint, not before. Claiming its yield is open from the first day; the wait stops churn, not withdrawal. A sealed coin cannot be burned at all, because a burn would take a slot out of a draw whose random words are already public.

The contract has no admin over the pool. No pause on redeem, no upgrade, no key that can move the funds. The code holds the money, not a person. The vault is a third party with its own risks; read about it before you mint.

The contract is 0x7A7dea7489708cc9b50831C364aCf6e95aA13b41 on Base. The vault it deposits into is 0x7BfA7C4f149E7415b73bdeDfe609237e29CBF34A, and the USDC is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913. The renderer new coins are pinned to is 0xa5EC64050248350A1116485DF73755B12722A558, and the author may still replace it for coins not yet minted.

Randomness nobody steers

The seed of each coin comes from Chainlink VRF, a verifiable random number the contract requests at mint and receives a few blocks later. A mint sends 0.00005 ETH per coin with it, and the contract passes it straight to its Chainlink subscription in the same transaction, so the randomness pays for itself and the contract never sits on ETH. Between the two the coin is sealed: it holds its backing and earns, and its art is missing. The art slot comes from an urn: a series has 25,000 slots, 50 of them Master Coins, and every mint takes one slot out at random from those left. The odds of a Master Coin start at 50 in 25,000 and move with every draw. When a series is full, every one of its 50 Master Coins is out, no more and no fewer. The author cannot know or choose who gets them. If Chainlink never answers, anyone can ask again from the contract after its retry window, and this site does it for you. If no answer ever comes, the coin can be burned for its backing after 180 days, so the money is never trapped by a request nobody filled.

Series without end

A series is 25,000 coins. When it fills, the next one opens with its own urn and its own 50 Master Coins. The Master Coins keep their names across series; each series renders its own version from a new seed.

Founder coins

100 coins a series belong to the author, who mints them from the author wallet at no cost, class 50 USDC, art from the same urn as everyone. They can only be minted while the series is inside its first 1,000 coins. When that window closes, whatever the author has not minted is gone for that series, so the free mints cannot wait for a moment when the urn is dense with Master Coins. Their backing is not paid at mint. The contract fills it from the author's 10% of yield, oldest founder coin first, until each holds its 50 USDC. Until then the coin shows how much is funded, earns yield on that amount, and a burn returns that amount. No other minter's money ever backs a founder coin. They carry the trait Origin: Founder.

The image

The coin is a 64 by 64 pixel grid drawn by a renderer contract from the seed and the contract's own numbers. No server, no file store, no link. tokenURI returns the metadata and the SVG inline. The seed is written on the coin: eight hex digits under it, thirty-two marks on the inner rim. The ring outside the coin is its lifetime yield; see the yield ring. The renderer can be replaced by the author for future mints only; every coin keeps the renderer it was minted with.

What can go wrong

ONE can lose you money. The backing sits in a third-party lending vault on Base; if that vault is hacked, drained or frozen, the coins hold nothing and nobody makes it up. Yield can be zero. The coins may never trade; there may be no buyers at any price. Nobody promises a return, and the odds that this earns you nothing are large. Put in only what you can lose.

What this is not

Not an investment product and not advice. The art is CC0.