https://widnyana.web.id/en/tags/upgrade-authority/ Recent content in Upgrade-Authority on wid@internet:~$ Hugo en-us Tue, 05 May 2026 15:07:35 +0700 https://widnyana.web.id/en/posts/solana/solana-upgrade-authority-keypair-to-immutable/ Tue, 05 May 2026 10:00:00 +0700 https://widnyana.web.id/en/posts/solana/solana-upgrade-authority-keypair-to-immutable/ Every upgradeable Solana program has one field that controls who can replace its bytecode: the upgrade_authority_address in the ProgramData account. This post traces the full lifecycle of that field, from a single keypair through Squads multisig and SPL Governance, to the irreversible --final flag that freezes a program forever.