Hedera Hashgraph, an enterprise-focused blockchain platform, is preparing to open its mainnet beta to the general public through an event called Open Access, according to an announcement on Thursday. Starting on September 16, any developer can create an account and begin building dApps on Hedera's platform. Hedera will also begin its 15-year distribution schedule of its native HBAR tokens to investors from its $124 million initial SAFT token offering.