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A launch is quoted in its pair forever. The opening price is read on-chain when you sign - never typed, never trusted. Pairs come three ways:

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Bring your own pair

On Base, you are not limited to the list. Paste a token’s address into the pair picker and, if its issuer is admitted and it has a real market, you can launch against it. The token card then carries a Creator-chosen pair badge, and the interface says so plainly: nominated by the creator, priced through a route the gate verified on chain, not a pair we added ourselves.
This is how a creator launched $EVAL paired with $REPPO - a token BaseStonk never curated, priced through one Uniswap v3 hop the gate accepted. $REPPO is a Clanker token, which is why the gate admitted it; anyone can do the same with any admitted-issuer token that has a market.
What the gate does not do: vouch for the token. A creator-chosen pair is the creator’s judgment about what their token should track; the gate only guarantees the price it opens at was real. The badge exists so a buyer knows which kind they are looking at.

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Three kinds of stock token

Robinhood Chain. 194 equities and ETFs issued by Robinhood - NVDA, AAPL, TSLA, SPY and the rest. Admitted by what they are, not by a list; priced by Chainlink where a feed exists and by the token’s own market otherwise, behind a depth gate. Chains →
The form tells you which kind you are choosing.

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How a pair is priced

A feed that refuses stops the launch. That is the design: a launch priced off a pool a $500 trade could move opens at a market cap that was never real.

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When a pair goes quiet

The pair shows a Too thin badge and the launch button is blocked, with the reason stated. Nothing is stuck: tokens already launched against the pair are unaffected, because the feed only prices the opening of a new pool. The pair reopens by itself the moment its market deepens - no action from anyone. A pair that has thinned for good is re-curated onto a deeper venue, never given a lower floor.

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Stocks as dividends

Equities can also be dividend assets: a launch pays its holders in tokenized stock through its basket.
$BSTONK as a pair is priced from its own pool times the USDC feed - a spot price a determined trader can move within a transaction. That can misprice the opening of a new launch, never a pool that exists.
On Base the form offers to launch your token as a B20 through Base’s factory precompile - against any oracle-priced pair: WETH, USDC, cbBTC, the stocks, $BSTONK. Until 2026-09-23 this was offered only against a Coinbase B20 stock. Your token gets a 0xB2000000… address like the Coinbase stocks, a fixed 1B supply, and both the mint role and the last admin renounced inside the launch transaction. Nobody can mint, pause or freeze it - verify the renounce on Basescan.It is not offered where the pair has no oracle feed - an ecosystem or nominated token priced by a route, or one of the directly priced wrapped listings (wtTSM, wtAMD and the rest): the B20 launcher opens from the oracle price only. The form shows the B20 option only where it can launch.The standard has no holding caps and calls no external trackers. The form states both halves before you sign.