http://revuo75joezkbeitqmas4ab6spbrkr4vzbhjmeuv75ovrfqfp47mtjid.onion/periodicals/periodical-4-2019.html
The new scheme proposes a trustless logarithmic-size ring signature as an alternative to the current MLSAG (Multilayer Linkable Spontaneous Anonymous Group Signatures) system. The main innovation of Triptych is that the byte size of the ring signature could be scaled logarithmically with the number of decoys, rather than linearly, whereas the verification time remains linear.