Providers

The Crayon Protocol team decided to leave it to third parties to host front-ends to access the protocol’s desks. Integration with Crayon can also benefit DEXes who can then source loans for leveraged trading on their platforms. Providers are incentivized by letting them specify and keep a percentage of reward tokens earned by their users. When minting reward tokens for a user, the protocol awards that percentage of the rewards to the provider the user used. DEXes integrating with Crayon also benefit by being able to flashloan collateral posted by their users at no cost.

The following functions in the Control smart contract are available for provider interaction.

register_provider(_provider_percentage: uint256)

Register msg.sender as a provider (of front end in most common use case). Reverts if msg.sender is already registered or had registered in the past and then unregistered.

• _provider_percentage: The percentage of reward tokens earned by its users that the provider will keep

Note

A provider that un-registers cannot later re-register using its previous address but can re-register using a new address. This is meant to protect users from abusive behavior.

unregister_provider()

Unregister msg.sender as a provider. Reverts if msg.sender is not already registered as a provider. Provider still earns rewards from activity that happened prior to un-registering.

is_registered_provider(_provider: address) → bool

Returns True or False. True means _provider has registered as a provider and has specified the percentage of its users’ reward tokens that it will keep. This is a view function.

• _provider: The address

provider_percentage(_provider: address) → uint256

Return the percentage of the cumulated reward tokens a provider keeps. A return value of 5 means the provider keeps 5% of its users’ rewards. This is a view function.

• _provider: The address of the provider