Bitcoin is approaching a major supply zone between $80,000 and $82,500, where substantial on-chain cost bases were established during the final rally before a selloff. Garrett Jin, an agent for the "BTC OG insider whale," said not all coins in that zone necessarily need to be sold. Demand remains supportive: U.S. spot Bitcoin ETFs recorded inflows for eight consecutive trading days through Aug. 26, totaling about $2.8 billion, while August inflows reached about $3.3 billion, the highest monthly amount this year. On-chain data showed a positive seven-day moving average for net realized profit and loss at about $752 million, with realized profits near $1.1 billion and realized losses at $354 million. Jin said sustained daily closes above $82,500 would indicate that supply is being absorbed. On the downside, $76,600 is the key level because it is near the cost basis of short-term holders. A single daily close below that level would be manageable, but a genuine warning would require at least two of three indicators to deteriorate simultaneously: ETF flows, the Coinbase premium, and the seven-day exponential moving average of net realized profit and loss. On-chain data also showed that Jin's address added 600 BTC to long positions at $79,000 in the early hours of Aug. 26, worth $47.4 million. The address held 1,868 BTC in long positions, valued at $147 million, at an average price of $77,090 and an unrealized profit of $2.78 million.