Cobalt hits Base mainnet with engineering improvements targeting transaction flexibility and upgrade automation

PRODUCTCobalt hits Base mainnet withengineering improvements targetingtransaction flexibility and upgradeautomation45IMPORTANCECLOSED7NEWS MEDIA8PIECESSep 30, 2026 19:00blockboard.net
In Layer 2

Base activated the Cobalt upgrade on September 30 and brought it to mainnet, with changes centered on conditional transactions, upgrade scheduling, and new B20 asset functions. The rollout also added issuer controls for tokenized assets, including balance-multiplying schedules, recorded balance seizures, and transfer-policy tools.

What this rests on

Claim by claim, with its source
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The hard fork included B20 token changes, on-chain upgrade scheduling, and Trusted Execution Environment signer verification.
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The upgrade went live on mainnet and added conditional transactions plus new functions for assets built on the B20 standard.
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Cobalt introduced tools for traders to set transaction conditions and for issuers to run compliance checks, stock splits, and forced token transfers.
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For B20 tokens, issuers gained a way to move a seized balance to another wallet with an onchain note instead of destroying it.
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Base’s development team said the scheduled hard fork was meant to optimize smart contract performance and provide automated transaction execution tools.
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Base activated Cobalt on September 30.
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The fork also added support for scheduling balance multipliers, seizing balances with a record, and combining transfer policies.

Market reaction

ET Ethereum it is the asset of the company or protocol in the event from 2 h before to 4 h after the line marks the first headline
published
-0.53 % before publication
+0.56 % after
$2,674price at publication
12series points

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.

+4 h 58 m
Sep 30 19:00
+4 h 58 m
Sep 30 19:00
Cointelegraph context
Its angle: conditions, compliance, completes
+4 h 58 m
Sep 30 19:00
The Defiant context
Its angle: defiant, story, ships
+4 h 59 m
Sep 30 19:00
Unchained context
Its angle: administrators, administrator, seizewithmemo; with quotes
+5 h
Sep 30 19:01
Crypto Briefing echo
No new facts: speculation, increasing, potential
+6 h 39 m
Sep 30 20:40
Crypto Economy context
Its angle: interoperability, standardization, decentralized; with quotes
+19 h 42 m
Oct 1 09:44
crypto.news echo
No new facts: multipliers, activated, policies

Has this happened before?

Nothing comparable yet.