HighCastle is an investment marketplace, designed to tokenize private securities and alternative investments with the use of HighCastle's SmartNotes™, a proprietary financial instrument. HighCastle token is an Ethereum-based voucher token created by HighCastle. Token holders are able to use it to receive the discounts, vote for investment projects/ICOs and pay service fees with AIMS tokens at HighCastle Alternative Investment Marketplace.