Claimable contracts extend the concept of Ownable contracts and allow the owner of the contract to specify one or more addresses that can claim ownership of the contract after a certain time.
The owner can keep extending ownership by periodically setting a new expiration date. Should the owner lose keys, one of the specified claimers can then claim ownership and become the new owner.
To use this package, copy Ownable.sol and Claimable.sol into your project, and make it extend Claimable:
import "./Claimable.sol";
contract MyContract is Claimable {}To see this project in action, you need to install a few dependencies:
npm install -g truffle
npm install -g express
npm install -g ganache-cli
ganache -p 7545 # if you chose another port, modify truffle-config.js
truffle migrate # (copy address of the contract for the frontend)
node gui/run.js # will start a webserver on port 3000This code is provided under the MIT License