What is this that is a set of accounts and changes when a tx is executed?
Question: What is this that is a set of accounts and changes when a tx is executed?
In the context of blockchain, a set of accounts that changes when a transaction is executed is called a state. The state is a snapshot of all the balances and balances of all the accounts on the blockchain at a given point in time.
When a transaction is executed, the state is updated to reflect the changes made by the transaction. For example, if a transaction transfers 10 ETH from one account to another, the state will be updated to reflect that the first account now has 10 ETH less and the second account now has 10 ETH more.
The state is important because it allows the blockchain to track the ownership of assets and to ensure that transactions are valid. For example, if a transaction attempts to transfer more ETH than is in an account, the transaction will be rejected because it is invalid.
The state is also important for smart contracts. Smart contracts are self-executing contracts that are stored on the blockchain. Smart contracts can use the state to track the state of the contract and to execute the contract's terms.
Here is an example of how the state changes when a transaction is executed:
State before transaction:
Account A: 100 ETH
Account B: 50 ETH
Transaction: Transfer 10 ETH from Account A to Account B
State after transaction:
Account A: 90 ETH
Account B: 60 ETH
The state has changed to reflect the transfer of 10 ETH from Account A to Account B.
The state is a fundamental concept in blockchain technology and is essential for understanding how blockchains work.
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