Adding Addresses

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Add Addresses
To add an address to an existing EIN, call the addAssociatedAddressDelegated function on the Identity Registry.
To remain a trustless process, adding an address requires two signatures - one from a current Associated Address, and one from the Associated Address to be claimed.
To add an Associated Address, call the addAddress function on the Snowflake smart contract with the approvingAddress, addressToAdd, r,s,v signatures from both addresses, and the timestamp of the function call.
Signatures should follow the example format: 
require(
    isSigned(
        approvingAddress,
        keccak256(
            abi.encodePacked(
                byte(0x19), byte(0), address(this),
                "I authorize adding this address to my Identity.",
                ein, addressToAdd, timestamp[0]
            )
        ),
        v[0], r[0], s[0]
    ),
    "Permission denied from approving address."
);
require(
    isSigned(
        addressToAdd,
        keccak256(
            abi.encodePacked(
                byte(0x19), byte(0), address(this),
                "I authorize being added to this Identity.",
                ein, addressToAdd, timestamp[1]
            )
        ),
        v[1], r[1], s[1]
    ),
    "Permission denied from address to add."
);
ARGUMENTS
Parameter
Type
Description
approvingAddress
address
A current Associated Address of the EIN.
addressToAdd
address
Address to be added to the user's EIN.
[r], [s], [v] signatures
[bytes32], [bytes32], [uint8]
Signed messages from each address as required in the example format.
timestamp
uint
Timestamp of the function call - to prevent replay attacks.

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Removing Addresses

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Parameter	Type	Description
`approvingAddress`	`address`	A current `Associated Address` of the `EIN`.
`addressToAdd`	`address`	Address to be added to the user's `EIN`.
[`r`], [`s`], [`v`] signatures	[`bytes32`], [`bytes32`], [`uint8`]	Signed messages from each address as required in the example format.
`timestamp`	`uint`	Timestamp of the function call - to prevent replay attacks.