CryptoSlate analysis indicates that while Bitcoin's supply unmoved for over a year reached 63.3% as of September 18, a 0.98 percentage point increase from August 18, this growth primarily stems from the natural aging of tokens across different holding periods, rather than new purchases or market withdrawals. The analysis suggests that confirming a new accumulation trend would require corroboration from metrics such as entity-adjusted balance changes, exchange flows, and spending behavior.