Miners’ margins tighten as hashprice brushes 40/PH/s, warns TheMinerMag’s @WolfieZhao 📉⛏ - Hashprice briefly slipped under the key 40 break‑even level. - @TheMinerMag_ report says public miners offloaded 42% of March production. - Price‑to‑hash ratio nears 50/TH/s, sector value falls below 20B.