Decentralized platforms that require a coin can be enabled via blockchains. The blockchain is the distributed ledger technology that allows a network to maintain consensus. The network can track transactions and transfer value and information due to distributed consensus.
Each asset holds a value, often priced in U.S. dollars, which leads to another use case: trading and investing. Aside from stablecoins — which seek to stabilize the instability of cryptocurrencies by pegging an asset to something else, such as the U.S. dollar — most cryptocurrencies constantly fluctuate in price. You can trade between cryptocurrencies and national currencies (called fiat currencies) on exchanges, depending on the trading pairs available on the platform of choice.

The two ways of adding funds achieve the same result. Which you choose depends on your preference between centralized exchanges and decentralized finance (Defi). Many people prefer increased control over the transaction that is possible with Defi. You may prefer the customer service of a centralized exchange.
A break and close above the channel will indicate strength and the pair may rally to $300 and then to $321. Conversely, if bears sink the price below the channel and the $216 support, the decline could extend to the 50-day SMA ($179).