Bitminer Factory ICO contracts
This repository holds the smart contracts that constitute the on-chain part of Bitminer Factory ICO. The 'BMF' token, an ERC-20 token on Ethereum acts as a mining contract between token holders and Bitminer Factory.

Crowdsale: a limited time period contract that accepts purchase requests for 'BMF' tokens and handles those requests, according to the supply available.
BitminerFactoryToken: an ERC20 contract that mints 'BMF' tokens during the sale period and can destroy tokens in the later phase, during Bitminer Factory BuyBack operations.
Whitelist: basically a mapping of addresses to a whitelist flag. It stores the addresses of buyers that have previously registered themselves through the Bitminer Factory Portal and are allowed to participate in the Crowdsale phase.
BurnableToken: a token that can be irreversibly burned (destroyed). Based on OpenZeppelin-Solidity with some changes in order to set a destroyer that could differ from owner.
MintableToken: the 'BMF' token inherits from MintableToken and BurnableToken with some changes in order to add a batches of beneficiaries. Minters could only be the crowdsale (to be settled) and the deployer of the contract(owner).