According to @lookonchain, dormant Bitcoin address 1Au1uZ transferred 1,000 BTC valued around 89 million USD to a new wallet roughly two hours before Dec 5, 2025, indicating a significant whale move that could affect market monitoring, source: Lookonchain on X. According to @lookonchain, the address originally received 1,000 BTC about 14 years ago when BTC traded near 3.88 USD, implying an initial value close to 3,883 USD, source: Lookonchain on X. According to BitInfoCharts address data, on-chain records for 1Au1uZ show an outbound transaction of 1,000 BTC to a fresh address, confirming the transfer size and timing, source: BitInfoCharts address page for 1Au1uZ. According to Glassnode on-chain research, such movements increase old-coin activity measured by Coin Days Destroyed, a metric that rises when long-dormant BTC moves and is used to track shifts in coin age dynamics, source: Glassnode on-chain metrics documentation. According to CryptoQuant analytics, traders typically monitor subsequent exchange inflows after whale transfers to gauge potential near-term sell pressure via exchange flow dashboards, source: CryptoQuant exchange flow metrics.