According to @lookonchain, wallet 0x7B7b closed an XRP short with a realized profit of $945,000, then increased his BTC short to a total of 2,222 BTC with $224.5 million notional exposure, signaling elevated downside positioning from a single large actor, source: Lookonchain on X, Nov 7, 2025. Based on the notional value reported by @lookonchain, the position size implies an approximate reference price near $101,000 per BTC for the aggregate short exposure, calculation from figures cited by Lookonchain on X, Nov 7, 2025. @lookonchain identifies the wallet as the Roobet and Stake.com gambler 0x7B7b, highlighting ongoing high-leverage activity that traders track for potential market impact in BTC and XRP derivatives, source: Lookonchain on X, Nov 7, 2025.