Accounts

FastSet allows two types of accounts: user-driven and contract-based.

If you’re familiar with Ethereum accounts, you’ll notice FastSet accounts are similar to the externally-owned and contract accounts from Ethereum. Both user-driven and contract-based accounts can receive, hold, and send native tokens and interact with deployed contracts. Their key differences are also similar to those between Ethereum’s externally-owned accounts and contract accounts, listed as follows:

• User-driven accounts

  • cost nothing to create;

  • can submit any claim block;

  • are controlled by a pair of public and private keys.

• Contract-based accounts

  • incur a creation cost because they are using network storage;

  • can only submit claim blocks according to the prescribed scripts;

  • respond to messages from other accounts.

There can only be one user-driven account, but as many as desired contract accounts associated with it. The user-driven account has as address its public (primary) key pk, while the contract accounts have as address other public keys generated from the same private key sk of the user-driven account.

From the user-driven account, you can submit any type of claim, but contract-based accounts are specialized and can submit only the type of claims they have been instructed to. What this means is that contract-based accounts have a SETL script associated with them at creation time and can only submit claims generated by that script. We’ll discuss more on this in a later section.