Definition ∞ On-chain upgrades refer to modifications or improvements to a blockchain protocol that are implemented and activated directly on the network itself, often through a consensus mechanism or a hard fork. These changes affect the core rules and functionalities of the blockchain, requiring agreement among network participants. They are fundamental for protocol evolution.
Context ∞ News frequently covers on-chain upgrades for major cryptocurrencies, detailing the technical specifications, community debates, and potential impacts on network performance or security. Successful upgrades signify a network’s ability to adapt and improve. The process of achieving consensus for these changes is a critical aspect of decentralized governance.
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