Found by 0.01, thread about it here.
Photo by 0.01.
ITS sequence matches 100% with the neotype sequence of Psilocybe cyanescens.
GCGTGGTTGTAGCTGGTCCTCTCGGGGGCATGTGCTCGCCCGTCATCTTTATATCTCCACCTGTGCACCTTTTGTAGACGTTGAAACTGGATAGGAGAGGGACTTGTCCTTCAAGTTGAAGGATTTTTCGGCGCTCTACGTTTTCATATACCCCAAAGAATGTAACAGAATGTATCTTATGGCTTTATGCCTATAAACTATATACAACTTTCAGCAACGGATCTCTTGGCTCTCGCATCGATGAAGAACGCAGCGAAATGCGATAAGTAATGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACCTTGCGCTCCTTGGTATTCCGAGGAGCATGCCTGTTTGAGTGTCATTAAATTCTCAACCTTACCAGCTTTTGTTAGCTTGTGTAATGGCTTGGACTTGGGGGTCTTTTGCCGGCTTCTCTCGAGATGTCAGCTCCCCTTAAATGTATTAGCCGGCTGCCCGCTGTGGACCGTCTATTGGTGTGATAATTATCTACGCCGTGGACGTCTGCTCTCAATGGGTTGAAGCTGCTTCTAACCGTCCGTTTATTCGGACAGCACATAATGACAATTTGACCTCAAATCAGGTAGGACTACCCGCTGAACTTAAGCATATCAATAagCGGAGGAA
Approx 5cm diameter wavy-edged caps, turning blue; 5cm long stems, blueing especially when handled, with rooted base. Spore print is purple.