radix-engine 1.3.1

Reference implementation of Radix Engine, from the Radix DLT project.
Documentation 
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# Transaction Bootup

The bootup and initialization of a transaction consists of two steps:
1. Initialize Stack
2. Invoke Transaction Processor

![](bootup.drawio.png)

## Initialize Stack

Before a transaction is executed, initialization of the Kernel/System/VM stack occurs. During this
initialization phase, configuration is loaded from the database and the state of each layer is
initialized.

| Layer  | Initialization Description                                                                                                                                                       |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Kernel | Load Kernel version<br>Check transaction references<br>Create Initial Call Frame                                                                                                 |
| System | Load System module configurations<br>Verify transaction has not been previously executed<br>Verify transaction is valid within epoch bounds<br>Initialize enabled System Modules |
| VM     | Load Scrypto VM version                                                                                                                                                          |


## Invoke Transaction Processor

Once the entire stack has been initialized along with the initial call frame, an invocation of a 
well-known blueprint, `TRANSACTION_PROCESSOR`, is made with the arguments specified in the transaction.
From this point forward, normal transaction execution occurs.