Icon LinkOutput

enum OutputType : uint8 {
    Coin = 0,
    Contract = 1,
    Change = 2,
    Variable = 3,
    ContractCreated = 4,
}

name	type	description
`type`	OutputType	Type of output.
`data`	One of OutputCoin , OutputContract , OutputChange , OutputVariable , or OutputContractCreated .	Output data.

Transaction is invalid if:

type > OutputType.ContractCreated

Icon LinkOutputCoin

name	type	description
`to`	`byte[32]`	Receiving address or predicate root.
`amount`	`uint64`	Amount of coins to send.
`asset_id`	`byte[32]`	Asset ID of coins.

Icon LinkOutputContract

name	type	description
`inputIndex`	`uint8`	Index of input contract.
`balanceRoot`	`byte[32]`	Root of amount of coins owned by contract after transaction execution.
`stateRoot`	`byte[32]`	State root of contract after transaction execution.

Transaction is invalid if:

inputIndex >= tx.inputsCount
tx.inputs[inputIndex].type != InputType.Contract

Note: when signing a transaction, balanceRoot and stateRoot are set to zero.

Note: when verifying a predicate, balanceRoot and stateRoot are initialized to zero.

Note: when executing a script, balanceRoot and stateRoot are initialized to the balance root and state root of the contract with ID tx.inputs[inputIndex].contractID.

The balance root balanceRoot is the root of the SMT of balance leaves. Each balance is a uint64, keyed by asset ID (a byte[32]).

The state root stateRoot is the root of the SMT of storage slots. Each storage slot is a byte[32], keyed by a byte[32].

Icon LinkOutputChange

name	type	description
`to`	`byte[32]`	Receiving address or predicate root.
`amount`	`uint64`	Amount of coins to send.
`asset_id`	`byte[32]`	Asset ID of coins.

Transaction is invalid if:

any other output has type OutputType.OutputChange and asset ID asset_id (i.e. only one change output per asset ID is allowed)

Note: when signing a transaction, amount is set to zero.

Note: when verifying a predicate or executing a script, amount is initialized to zero.

This output type indicates that the output's amount may vary based on transaction execution, but is otherwise identical to a Coin output. An amount of zero after transaction execution indicates that the output is unspendable and can be pruned from the UTXO set.

Icon LinkOutputVariable

name	type	description
`to`	`byte[32]`	Receiving address or predicate root.
`amount`	`uint64`	Amount of coins to send.
`asset_id`	`byte[32]`	Asset ID of coins.

Note: when signing a transaction, to, amount, and asset_id are set to zero.

Note: when verifying a predicate or executing a script, to, amount, and asset_id are initialized to zero.

This output type indicates that the output's amount and owner may vary based on transaction execution, but is otherwise identical to a Coin output. An amount of zero after transaction execution indicates that the output is unspendable and can be pruned from the UTXO set.

Icon LinkOutputContractCreated

name	type	description
`contractID`	`byte[32]`	Contract ID.
`stateRoot`	`byte[32]`	Initial state root of contract.

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