You'd be up big, but you might regret not selling earlier. Although Dogecoin (DOGE 0.54%) doesn't have much going for it as an investment, it has been one of the most successful cryptocurrencies. It's worth about $21 billion (as of Jan. 22), making it one of the 10 largest coins by market cap. This meme...

This asset has utility and a few other useful features. Ethereum (ETH +0.69%) is pretty much never the cheapest, nor the fastest, nor the smoothest blockchain to use. Still, some long-term investors prefer owning it to other cryptocurrencies, because they're buying an asset with exposure to a critically important platform within the crypto ecosystem more...

Introduction The Ethereum Foundation has elevated post-quantum security to a central pillar of its long-term roadmap, announcing the creation of a dedicated Post Quantum (PQ) team. The initiative signals a coordinated push to anticipate the cryptographic challenges posed by quantum computing and to safeguard the network’s security model at scale. Thomas Coratger, a cryptographic engineer...