The $BTC remains at the center of discussions about the maturity of the crypto market. Advocates consider it a digital reserve asset and protection against inflation, while critics highlight its extreme volatility and increasing correlation with traditional assets during crises. The energy consumption of Proof of Work (≈ 140 TWh/year) is under regulatory and environmental pressure, despite advances in the use of renewable energy. The concentration of power in the hands of large miners (mining pools) raises concerns about the true decentralization of the network. Moreover, the launch of spot ETFs in the U.S. has driven institutional demand but also raised alarms about market manipulation and dependence on centralized infrastructure. The challenge is to balance innovation with sustainability and regulatory compliance.