Autumncoin (ATM) is a blockchain-based cryptocurrency that leverages the X11 algorithm and combines the benefits of both Proof of Work and Proof of Stake mechanisms. It transitions from PoW to PoS after a specific number of blocks, offering a 9% interest rate for PoS, and aims for quick transaction processing with a 60-second block target time. The coin was designed to encourage both mining and staking among its users, contributing to the security and functionality of its network. Information on the creators of Autumncoin was not specified, but further details can be sought from its official site or foundational documents.