Yes. Twentix is a cryptographic asset running on a public blockchain platform (bitshares). You can hold twentix yourself in a bts wallet (which we spoke about before, do you remember the account name?) or contract with a service provider to custody your assets if you prefer.

DaoStreet recommends holding your cryptoassets in wallets that you control the private keys for. Individual sovereignty is the underpinning of this entire movement of freedom and decentralization.