DN404 · Robinhood chain

An ERC-20 and an ERC-721, in a single token.

Apollo is a DN404 token — a mixed ERC-20 / ERC-721 implementation with native liquidity. Hold a whole token and you hold an NFT; trade a fraction and the NFT reforges. One contract, no wrappers.

How it works Compare standards

Apollo.sol

contract Apollo is DN404 {
  name     = "Apollo";
  symbol   = "APOLLO";
  supply   = 10_000e18;
  standard = ERC20 × ERC721;
  decimals = 18;
}

The mechanism

Balances and NFTs stay in lockstep.

Your ERC-20 balance is the source of truth. Cross a whole-token threshold upward and an NFT is minted to your wallet; cross one downward and an NFT is burned. Fractions move as plain ERC-20.

2.4

ERC-20 balance

= 2

NFTs held

Drag to change balance

Whole units mint or burn NFTs automatically, so nfts == floor(balance) always holds. The ERC-20 and ERC-721 sides can never drift apart, and pools trade the token natively — no wrapping, staking, or bridging.

Comparison

What DN404 adds.

Capability	ERC-20	ERC-721	DN404 · Apollo
Fungible & divisible	✓	✕	✓
Is an NFT	✕	✓	✓
Native DEX liquidity	✓	✕needs fractionalizing	✓
Fractional ownership of the NFT set	—	✕	✓
One contract, no wrapper	—	—	✓