Since its first implementation around the end of 2019, the `Registrar #1` (which is now a set of registrars), has evolved a lot. This article looks back on those evolutions as well as at the current stand. I will go through the challenges I ran into and how they have been solved. This includes a few dedicated web services, the use of a BPM engine as well as new functionnalities recently added to Polkadot, Kusama and the Westend chains.
While using a website such as https://polkadot.js.org/apps/#/ or the https://github.com/polkadot-js/extension are convenient, those do not provide the best internet isolation to ensure the maximum security for your keys. This article explains how to use subkey to sign challenges for `Registar #1`.