Valid Delivery

Last updated April 7, 2022

Definition

Formulated in Layer Zero Whitepaper

1. Every message m sent over the network is coupled with a transaction t on the sender-side chain.
2. A message m is delivered to the receiver if and only if the associated transaction t is valid and has been committed on the sender-side chain.

Example 1

1. Person A sends token to B - transaction 1
2. Only when Person B confirms that transaction 1 is valid, Person B sends another coin/message/balance to Person A

Example 2

1. Person A sends Bitcoin to Binance - transaction 1
2. Only when Binance confirms that transaction 1 is valid on the Bitcoin blockchain, Binance issues some bitcoin balance to Person A’s account