Bitcoin's supply share that last moved at least one year ago rose to 63.3% on Sept. 18 from 62.32% on Aug. 18, according to Maketo's HODL-wave data. The shift shows that more supply sits in older age bands, but it does not establish current buying or deliberate withdrawal from the market. Entity-adjusted balances, exchange flows and spending behavior are needed to test a fresh-accumulation thesis.