USDT.D looks interesting, in 2023, when USDT.D touches the blue line, then $BTC will reach ATH, and this is happening again now, 1 t1 the blue line has been touched and $BTC ATH is back, let's wait for the other 2 points to be touched too

and beware! in the 2020 halving, USDT.D started to strengthen ($BTC weakened) in Q2 2021