⚙️ Sei’s v6.7 Upgrade Is Live—And It Changes More Than Performance

Sei completed its mandatory v6.7 mainnet upgrade on October 8 at block 236,450,000, according to infrastructure status updates.

The verified release notes show this is a substantial network change: v6.7 introduces a new block-and-receipt storage backend and removes IBC, feegrant, and several legacy `sei_*` JSON-RPC methods.

That matters most for validators, node operators, and developers. Apps and tools relying on retired APIs or IBC history queries may need changes; users should follow guidance from the wallets and services they use.

The key distinction: this is an infrastructure upgrade—not a new token feature or a promise of higher SEI demand. Sei’s official release identified it as a mandatory mainnet upgrade, while independent infrastructure status pages marked the scheduled maintenance complete.

The takeaway: Sei has shipped a major backend and API transition. The next test is how smoothly its apps and infrastructure adapt.

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Not financial advice. DYOR.