Transaction

mina_tree::scan_state::transaction_logic

Enum Transaction 

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pub enum Transaction {
    Command(UserCommand),
    FeeTransfer(FeeTransfer),
    Coinbase(Coinbase),
}
Expand description

Top-level transaction type representing all possible transactions in the Mina protocol.

Transactions in Mina fall into two categories:

§User-initiated transactions

  • Command: User-initiated transactions that can be either signed commands (payments and stake delegations) or zkApp commands (complex multi-account zero-knowledge operations). These transactions are submitted by users, require signatures, and pay fees to block producers.

§Protocol transactions

  • FeeTransfer: System-generated transaction that distributes collected transaction fees to block producers. Created automatically during block production and does not require user signatures.
  • Coinbase: System-generated transaction that rewards block producers for successfully producing a block. May include an optional fee transfer component to split rewards.

§Transaction processing

All transactions are processed through the two-phase application model (apply_transaction_first_pass and apply_transaction_second_pass) to enable efficient proof generation. Protocol transactions (fee transfers and coinbase) complete entirely in the first pass, while user commands may require both passes.

§Serialization

The type uses [derive_more::From] for automatic conversion from variant types and implements conversion to/from the p2p wire format [MinaTransactionTransactionStableV2].

OCaml reference: src/lib/transaction/transaction.ml L:8-11 Commit: 5da42ccd72e791f164d4d200cf1ce300262873b3 Last verified: 2025-10-10

Variants§

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Command(UserCommand)

User-initiated transaction: signed command or zkApp command

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FeeTransfer(FeeTransfer)

System-generated fee distribution to block producers

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Coinbase(Coinbase)

System-generated block reward for block producer

Implementations§

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impl Transaction

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pub fn is_zkapp(&self) -> bool

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pub fn fee_excess(&self) -> Result<FeeExcess, String>

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pub fn public_keys(&self) -> Vec<CompressedPubKey>

OCaml reference: src/lib/transaction/transaction.ml L:98-110 Commit: 5da42ccd72e791f164d4d200cf1ce300262873b3 Last verified: 2025-10-10

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pub fn account_access_statuses( &self, status: &TransactionStatus, ) -> Vec<(AccountId, AccessedOrNot)>

OCaml reference: src/lib/transaction/transaction.ml L:112-124 Commit: 5da42ccd72e791f164d4d200cf1ce300262873b3 Last verified: 2025-10-10

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pub fn accounts_referenced(&self) -> Vec<AccountId>

OCaml reference: src/lib/transaction/transaction.ml L:126-128 Commit: 5da42ccd72e791f164d4d200cf1ce300262873b3 Last verified: 2025-10-10

Trait Implementations§

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impl Clone for Transaction

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fn clone(&self) -> Transaction

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Transaction

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl From<&Transaction> for MinaTransactionTransactionStableV2

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fn from(value: &Transaction) -> Self

Converts to this type from the input type.
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impl From<Coinbase> for Transaction

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fn from(original: Coinbase) -> Transaction

Converts to this type from the input type.
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impl From<FeeTransfer> for Transaction

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fn from(original: FeeTransfer) -> Transaction

Converts to this type from the input type.
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impl From<UserCommand> for Transaction

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fn from(original: UserCommand) -> Transaction

Converts to this type from the input type.
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impl GenericTransaction for Transaction

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fn is_fee_transfer(&self) -> bool

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fn is_coinbase(&self) -> bool

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fn is_command(&self) -> bool

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impl TryFrom<&MinaTransactionTransactionStableV2> for Transaction

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type Error = InvalidBigInt

The type returned in the event of a conversion error.
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fn try_from( value: &MinaTransactionTransactionStableV2, ) -> Result<Self, Self::Error>

Performs the conversion.

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