How can I add DEC to my Decentr browser wallet?
If you want to swap ERC20 DEC to Native (cosmos-based), you can use swap.decentr.net, and we've got a guide for you to learn about dSwap.
Cosmos-based DEC is also available on the Osmosis exchange, where you can purchase it and transfer to the Decentr wallet with minimal fees (using Keplr).