Ethereum is one step closer to "The Merge"—its long-awaited move to a proof-of-stake blockchain. Today, another one of its testnets, Sepolia, executed its own merge and made the switch to proof of stake. A testnet, short for test network, allows those using a blockchain to try out the new tech before it launches on its main network (mainnet) or undergoes an upgrade. This is particularly important with public networks such as Ethereum, so that developers can ensure upgrades work smoothly—and billions in funds aren't lost. Ethereum, the blockchain network that powers the second largest cryptocurrency by market ... (full story)