v3.26.1
Organization and principal activities (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Nov. 29, 2024
Jan. 01, 2024
Disclosure of subsidiaries [line items]          
Total assets $ 256,379,000 $ 129,834,000 $ 36,851,000   $ 36,851,000
Total liabilities $ 146,067,000 $ 100,049,000 $ 41,399,000   $ 41,399,000
Beijing OptAim Network Technology Co., Ltd. ("Beijing OptAim")          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a VIE 100.00%        
Total assets $ 17,000        
Total liabilities 1,277,000        
Registered capital and PRC statutory reserves 1,809,000        
Discontinued operations [member]          
Disclosure of subsidiaries [line items]          
Total assets 17,000        
Total liabilities $ 1,277,000        
Amber DWM Limited          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Sparrow Holdings Pte Ltd          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Sparrow Tech Private Limited          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Sparrow Digital Pte Ltd          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Sparrow Operations Private Limited          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Sparrow Fund Management Pte Ltd          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Amber DWM Limited (Hong Kong)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00% 100.00%    
Amber Premium FZE (Dubai)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00%      
Amber Match Limited (BVI)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00% 100.00%      
Amber Trading Alfa Limited          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary     100.00%    
MegaVoyage Holding Limited (BVI)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
BetaForce Holding Limited (BVI)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
Macro Investment Holding Limited (BVI)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
Macro Ventures Holding Limited (BVI)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
Beta Major Investment Holding Limited (BVI)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
iClick Interactive Asia Limited (Hong Kong) (Note 5.1)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
China Search (Asia) Limited (Hong Kong) (Note 5.1)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
CMRS Digital Solutions Limited (Hong Kong) (Note 5.1)          
Disclosure of subsidiaries [line items]          
Percentage of effective ownership held by the company in a subsidiary 100.00%        
Amber DWM Holding Limited | Amber Trading Alfa Limited          
Disclosure of subsidiaries [line items]          
Consideration for sale of discontinued operation       $ 0  
Gains (losses) on disposals of non-current assets $ 5,003,920