Coinbase puts CT-USD trading pair into auction mode as Concrete token debuts

LISTINGCoinbase puts CT-USD tradingpair into auction mode asConcrete token debuts13IMPORTANCECLOSED1NEWS MEDIA1PIECESSep 29, 2026 18:48blockboard.net

Coinbase added a Concrete (CT) asset page on Ethereum that showed zero circulating supply and missing market data, while no deposit or trading date was confirmed. A separate listing step then placed the CT-USD pair into auction mode as Concrete debuted.

What this rests on

Claim by claim, with its source
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Coinbase added a Concrete (CT) page on Ethereum that showed zero circulating supply and insufficient market data, with no confirmed deposit or trading date.
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The Concrete page identified CT on Ethereum even though the circulating supply field was shown as zero.
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Coinbase later put the CT-USD trading pair into auction mode as Concrete debuted.
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The CT-USD pair was listed in auction mode rather than regular trading at debut.

What it means

Who it affects, what changes and what is still unconfirmed

Each sentence links inside to the piece that supports it.

Users watching Coinbase listings would notice that Concrete (CT) appeared on an Ethereum asset page, but the page still showed zero circulating supply and no confirmed trading or deposit date. That means the listing information was visible before normal market activity was confirmed, and anyone looking for an active spot market would still be waiting for a trading start.

In practice, the CT-USD pair being in auction mode changes how the opening market is handled compared with an ordinary live order book. The pair is not described as fully open trading here, and the separate page detail that no confirmed trading date was posted remains unchanged.

Market reaction

ET Ethereum the event is about this asset from 2 h before to 4 h after the line marks the first headline
published
+0.51 % before publication
-0.46 % after
$2,692price at publication
12series points

The move was larger before the first headline than after. That is an observation, not an explanation: the market also moves on things nobody publishes.

How the story was built

Every piece in order, with the time its news medium declares — if it is not believable we use ours and say so — and what it added to what was already known at that point. Arriving first is not the same as adding something.

first
Sep 30 10:21

Has this happened before?

Nothing comparable yet.