An opt-in upgrade is a software update for a blockchain protocol or decentralized application that requires users or network participants to actively choose its implementation. This differs from mandatory upgrades, which are automatically applied to all users without explicit consent. It provides users with control over their system’s evolution.
Context
News often reports on the governance implications and community debates surrounding opt-in upgrades, particularly within decentralized autonomous organizations. These discussions frequently center on user sovereignty, backward compatibility, and the potential for network splits if adoption is not widespread. The choice to upgrade carries significant weight for network cohesion.
TB-Sig embeds a block height expiry into Schnorr signatures, granting users temporal control over transactions to fundamentally constrain block producer MEV extraction.
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