On December 12, 2025, altcoins like JELLYJELLY, FIS, and SOMI led market gains as Bitcoin struggled below $90,000. Predictions for Ethereum suggest a potential rise to $20,000 by 2026, while a16z forecasts influential trends, including AI agents and instant transaction blockchains for next year.

This year's 519 is coming again. For investors who experienced the 2021 market surge, the date 519 in the crypto world is already etched in their minds. In just a few hours, the market plummeted 30% from its peak, with some seeing their wealth halve instantly, while others panic-sold and exited. The intense volatility and psychological impact from that time still linger. Interestingly, the scenes from back then are now hard to see again. With mainstream institutions entering the crypto space and market liquidity continuously improving, those extreme black swan events seem to be becoming milder. But this doesn't mean we can forget about 519 in the crypto world; rather, we need to understand its origins and developments more deeply. Chain reaction triggered by multiple factors On the surface, the collapse of 519 in the crypto world began on May 19, 2021, but in reality, the fuse was lit days earlier. Elon Musk's Twitter statements' 180-degree turn The starting point goes back to mid-May.