0.001 ETH to create

Launch an Index

One ERC-20 backed in kind by up to 10 Base tokens. A buy mints shares and a sell burns them, routed through each token's own pool. No liquidity to provide.

Index launches open soon. Live indexes trade from the Index tab.

Coming soon. The index contracts are not deployed yet. You can build a basket and check its routes now; creating opens once the factory is onchain.

Name

Ticker

Tokens 0 of 10

2 to 10 tokens. Search the screener or paste any Base token address. Each token needs a path of up to 3 pools from ETH on Uniswap, SushiSwap or Aerodrome, through any token with a market (a meme paired with a stock goes through the stock's USDC pool). Every pool on the path must hold at least 2 ETH, and the thinnest at least $25k.

Creator fee share to holders

Share of your 50% of fees paid to holders in ETH; can be raised later, never lowered.

0.001 ETH to create. The index starts empty: the first buy opens it.

Before you sign, your browser searches for a token address ending in b420, which takes a few seconds. You sign one transaction, createIndex, with exactly the factory's creation fee as its value. Tokens, weights and routes are fixed at creation. The contracts have no owner and no admin key. B420 is an independent platform, not affiliated with Base or Coinbase.