PEPEUSDT
PEPE / Tether USD
cryptoComposite

Because nobody owns a ticker. There is no registry: every exchange and data site assigns its own symbol, and anyone can deploy a token with any name and ticker in about a minute. To put numbers on it, the coin list I work on at Coinpaprika has about 12,400 active coins sharing roughly 10,000 tickers. About 1,450 tickers are used by more than one coin, which covers around 3,800 coins, close to 1 in 3. PEPE alone belongs to 18 different coins, and even BTC to 9. Quantus is a live example. Searching DEX data for the name right now turns up 10 different tokens called Quantus or Quantus Network across six chains, under at least four tickers (QTC, QUAN, QUANTUS, and one that literally uses "Quantus" as its ticker). Most have next to no trading. At most one of them can be the project's own. What actually identifies a coin is the chain plus the contract address, or, if it runs its own blockchain, the project's official docs saying where it trades. So: 1. Get the address or native-chain info from the project's own site or official account, never from a search result or a reply. 2. Match that address on the exchange or tracker you use, and ignore the ticker entirely. 3. If a "Quantus" token exists on a chain the project never mentions, treat it as unrelated until they say otherwise.

Can Iran please demand payment in BTC, Dogecoin and PEPE?

Cypto coins arent finite. I own bitcoin, PEPE and MELANIA. Millions of others to choose from too.