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Backpack Wallet adds Solana v1 support for 4,096-byte transactions

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  • Backpack Wallet added Solana v1 signing support for its users on 2 October 2026.
  • Solana v1 raises the maximum transaction size from 1,232 bytes to 4,096 bytes.
  • Legacy and v0 transactions remain supported while applications adopt the opt-in format.
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