Bitcoin has climbed back above $81,000 after a substantial one-day gain during a broader crypto-market resurgence. The recovery coincides with Bitcoin reserves on Binance, the world’s largest crypto exchange, reaching 702,900 BTC on September 19, according to CryptoQuant on-chain data. That was the highest reserve level recorded in 2026. Rising exchange reserves mean more Bitcoin is held on a trading platform and could potentially become available for sale, although the metric alone does not prove investors are preparing to sell. Binance’s reserves have increased alongside rising daily net inflows since late August, but the data does not show an unusually large whale-driven sell-off. Analysts say buyers will need to absorb the additional supply moving through Binance for the price recovery to become sustainable.