The canary in the coal mine is screaming in Japan.
Japan's 10-year government bond yield just hit 2.85%, highest since May 1997. The 20-year is sitting around 3.82%, near the highest level in the dataset going back to 1987. The 30-year is above 4%. Meanwhile the yen is trading near 162 per dollar, close to its weakest in four decades.
Japan is the clearest expression of the sovereign-debt trap: too much debt, a central bank that distorted the bond market for years, a currency that keeps weakening, and yields that rise anyway because the market is losing patience.
When the country that pioneered yield curve control starts losing control of the curve, every sovereign-bond holder should pay attention.
This matters beyond Tokyo. If JGBs keep selling off while the yen keeps sliding, the pressure leaks into U.S. Treasuries, global carry trades, bank balance sheets, and political panic.
Bitcoin is the escape hatch from the paper-duration trap.






