The project was made by Vadim B.
Have a look at this incredible posable hand sculpt with instanced fingers, created by Principal 3D Character Artist Vadim B, a.k.a. slipgatecentral. Featuring "local symmetry and custom pivots", the hand was created for the artist's WiP character project using Nomad Sculpt, a neat mobile application for 3D sculpting and painting. According to the author, the hand features "no deformations", consisting of "solid sculptable chunks of mesh, physically disconnected from each other, but parented for hierarchical transforms".
And here are some of the earlier WiP demos for the character:
If you would like to learn more about Nomad Sculpt, we also recommend checking out these great tutorials: