Matrix is federated. You dont own your own identity.
Discussion
That is my point, the same solution for Nostt discoverability would allow you to own your identity in Matrix or at least a fork of Matrix clients: I.e using the DHT
do me a favor, check pkarr.nuh.dev, and see if you can imagine using that to turn Matrix into a federated network with sovereign identity (like Bsky but with open DHT instead of consortium), and avoid reinventing that wheel