Ha, yes definitely. Thankfully the state-of-the-art in hash-based crypto has progressed a fair bit since the original lamport signature. The stateless "SPHINCS" signature scheme is looking quite mature already: http://sphincs.cr.yp.to
Although if you are working with an Event-Sourced architecture you may as well just implement with OTS (One-Time Signature) chains.
Although if you are working with an Event-Sourced architecture you may as well just implement with OTS (One-Time Signature) chains.