Yeah, it's a deterministic tree of hashes. Each leaf is the hash of a 16KB chunk. On the next layer up you have a series of nodes which are the hashes of the t

Yeah, it's a deterministic tree of hashes. Each leaf is the hash of a 16KB chunk. On the next layer up you have a series of nodes which are the hashes of the two leafs below it hashed together. You add enough layers until you get a single root hash at the root of the tree.