The eosio.token contract defines the structures and actions that allow users to create, issue, and manage tokens on EOSIO based blockchains. The core token EOS of the EOSIO mainnet are issued under the account eosio.token using this smart contract.
- GitHub repo: https://github.com/EOSIO/eosio.contracts/tree/master/contracts/eosio.token
- EOS Studio: https://app.eosstudio.io/eosio/eosio.token
There are a few types used in eosio.token as basic data structures. You can click the link in the action definitions to see how the types are defined.