The Sparkasse cryptocurrency service allows customers to buy, sell, and hold five digital assets: Bitcoin, Ether, XRP, Solana, and Polygon's POL token.

The first and largest cryptocurrency, spanning its price and adoption, mining, protocol politics, and its contested role as digital money and inflation hedge.

Digital assets that run on blockchains rather than banks, from Bitcoin and Ethereum to thousands of smaller tokens.

Cryptocurrencies beyond Bitcoin, with their market rotations, notable launches and collapses, and the line between innovation and speculation.