Halving cycles: so far BTC shows remarkable 4 year criticality with peak to peak duration range of 49-60 months for the last 3 cycles. The bear market (peak to bottom) usually lasts 11-13 months. Currently we are entering the final phase of the cycle if using the halving date as reference and comparing it to the previous three events. According to the model with expected halving Apr 2024 the bottom to be Nov 2022. There is repeating pattern of forming trough 74-78 weeks (for the last two cases) before the halving date and 52 weeks after the peak has been registered.