Congestion on the largest smart contract-enabled blockchain sent users in search of more scalable blockchains, spurring the growth of alternative layer 1′s and scaling solutions. The year brought astronomical gains for the likes of Solana, Polygon, Terra, Fantom and Avalanche, which ate up half the slots in the top 10.
Here Are the Top 10 Cryptocurrencies of 2021 – CoinDesk
