Upgrade Providers

Upgrade Providers lets you remove an existing provider for a user and replace it with a new one. If you've changed functionality for a custom provider for your end users, this is often a useful way to apply that new functionality without disrupting user-flow beyond accepting a new signature from the user.

To upgrade a Provider, call the upgradeProvidersFor function on the Snowflake smart contract with the arguments defined below. This function updates the Providers by removing old, unwanted provider addresses and adding new ones for an EIN. Resolvers that appropriately permission function calls based on Provider should continue interacting with the user as normal after this function is called for a user.

upgradeProviders function

function addProviders(uint ein, address[] providers) public;

The upgradeProvider function should contain:

ARGUMENTS

Parameter	Type	Description
approvingAddress	address	A current Associated Address of the EIN.
newProviders	address ()	Array of new provider addresses that are to be added.
oldProviders	address ()	Array of old provider addresses that are to be removed.
r, s, v signature	bytes32[2], bytes32[2], uint8[2]	Signed message as required in the format below.

As this function calls two separate internal functions within Snowflake, two signatures will need to be collected as follows:

keccak256(
  abi.encodePacked(
  byte(0x19), byte(0), address(this),
  "I authorize that these Providers be added to my Identity.",
  ein, providers, timestamp
  )
)

and

keccak256(
  abi.encodePacked(
  byte(0x19), byte(0), address(this),
  "I authorize that these Providers be removed from my Identity.",
  ein, providers, timestamp
  )
)