v3.26.1
Summary of significant accounting and reporting policies - Narrative (Details)
 12 Months Ended
Apr. 23, 2026
USD ($)
bitcoin
Dec. 31, 2025
USD ($)
bitcoin
Dec. 31, 2024
USD ($)
bitcoin
Dec. 31, 2023
USD ($)
bitcoin
Dec. 31, 2022
USD ($)
bitcoin
Disclosure of detailed information about intangible assets [line items]          
Private equity offering proceeds, including pre-funded warrants, net of transaction costs paid   $ 152,140,000 $ 0 $ 25,450,000  
Proceeds from exercise of pre-funded and 2025 warrants   32,521,000 0 0  
Proceeds from convertible debt, net of transaction costs paid   174,395,000 0 0  
Proceeds from current borrowings     14,000,000.0 9,000,000.0  
Profit (loss) for the year   (109,279,000) 57,567,000 (40,990,000)  
Retained earnings   145,074,000 35,795,000 93,362,000  
Working capital   69,500,000      
Cash and cash equivalents   13,386,000 9,093,000 5,705,000 $ 5,671,000
Purchase of digital assets   $ (377,200,000) $ 0 $ 0  
Disposals | bitcoin   (1,095) 0 0  
Number of bitcoin | bitcoin   2,139 0 0 0
Proceeds from sale of digital assets   $ 116,532,000 $ 0 $ 0  
Period of the maintenance   1 year      
Revenue from development contracts where no related incremental costs were identified       214,000  
Document Period End Date   Dec. 31, 2025      
Current Fiscal Year End Date   --12-31      
Performance obligation   $ 576,000   88,000  
Contract liabilities   204,000 300,000 190,000  
Proceeds from exercise of warrants   32,500,000      
Issue of convertible instruments   $ 174,400,000      
Licenses          
Disclosure of detailed information about intangible assets [line items]          
Life used to compute amortization in the case of perpetual licenses   5 years      
Capitalized development costs | Bottom of range          
Disclosure of detailed information about intangible assets [line items]          
Life used to compute amortization in the case of perpetual licenses   3 years      
Capitalized development costs | Top of range          
Disclosure of detailed information about intangible assets [line items]          
Life used to compute amortization in the case of perpetual licenses   5 years      
Digital Assets Transactions          
Disclosure of detailed information about intangible assets [line items]          
Aggregate principal amount of outstanding debentures $ 43,700,000        
Number of bitcoin held | bitcoin 1,114        
Number of bitcoin held as collateral for convertible debt | bitcoin 917        
Number of unrestricted bitcoin held | bitcoin 197        
Accumulated deficit          
Disclosure of detailed information about intangible assets [line items]          
Profit (loss) for the year   $ (109,279,000) $ 57,567,000 $ (40,990,000)