According to the source, a public social media post on Oct 19, 2025 claims Japan’s Financial Services Agency may allow banks to custody Bitcoin (BTC) and operate crypto exchanges, but the post provides no official FSA notice or legal reference, so the claim remains unverified at this time (source: public social media post, Oct 19, 2025). For trading, wait for an official FSA release or Cabinet Office Order update before positioning and watch BTCJPY liquidity, Japan exchange spreads, and domestic exchange volumes for confirmation signals if a policy change is announced (source: public social media post, Oct 19, 2025).