Paying for a domain does not by itself arrange long-term control. Before purchase, decide who holds the management account, where recovery details are stored, who can edit DNS, and how renewal will be handled. Anonymous access makes recovery codes especially important.
If the domain serves a website, mail system, or API, DNS is part of the infrastructure. Keep the registrar, DNS service, and application servers organized separately, and record nameservers, DNS records, and expiry dates.
USDT payment may simplify settlement, but renewal still requires a new confirmed order and amount. Do not wait for expiry and then search for an old address; keep recovery codes, wallet keys, and DNS credentials separate.