Yes. Having said that, the positives about IOTA; They seem to have developed their own hashing function, of the sponge family, called Curl - and are actually

Yes. Having said that, the positives about IOTA; They seem to have developed their own hashing function, of the sponge family, called Curl - and are actually using the Westernelitz (oh jesus spelling, more space-efficient Lamport) signature scheme - it is a method of constructing a digital signature only from hash functions. Cool.