package solana

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`GMPSolanaPayload` represents a Solana instruction for cross-chain execution via GMP Note: The target program ID is specified in `GMPPacketData.receiver`, not here. This avoids redundancy and ensures consistency with the IBC packet structure.

• repeated SolanaAccountMeta accounts = 1

  ALL accounts that will be accessed during execution

• bytes data = 2

  Instruction data

• uint64 prefund_lamports = 3

  Lamports the relayer should transfer to the GMP PDA before execution. Covers rent for accounts created by the target program. Set to 0 when no account creation is needed (e.g. SPL transfers).

`SolanaAccountMeta` represents account metadata for Solana instructions. Note: `is_signer` indicates whether the account should be a signer at the CPI instruction level. PDAs are marked `is_signer=true` even though they don't sign at the transaction level.

Used in: GMPSolanaPayload

• bytes pubkey = 1

  Account public key (32 bytes)

• bool is_signer = 2

  Should this account be a signer in the instruction? For PDAs: true (signs via `invoke_signed` during CPI) For regular accounts: false (doesn't sign)

• bool is_writable = 3

  Will this account be modified?