v3.26.1
Convertible notes payable (Tables)
 12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Schedule of convertible debt
Convertible Notes due 2025Convertible Notes due 2026Convertible Notes due 2028Total
US$US$US$US$
Balance as of December 31, 202263,775 — — 63,775 
Accretion of interest expense409 — — 409 
Balance as of December 31, 202364,184 — — 64,184 
Accretion of interest expense289 — — 289 
Balance as of December 31, 202464,473 — — 64,473 
Issuance of convertible notes— 42,880 60,000 102,880 
Accretion of interest expense527 3,603 283 4,413 
Conversion to ordinary shares— (7,664)— (7,664)
Repayments of convertible notes(65,000)— — (65,000)
Balance as of December 31, 2025— 38,819 60,283 99,102 
– Current portion— 38,819 — 38,819 
– Non-current portion— — 60,283 60,283 
Schedule of fair value, net derivative liability, unobservable input reconciliation The fair value of derivative liability is estimated with the following key assumptions:
As of December 31,
2025
Bond yields (i)
16.23% - 16.28%
Probability of triggering events (ii)1.61%
___________________________
i.The bond yields were estimated based on the market yield of comparable bonds with similar credit rating.
ii.Probability of triggering events was estimated based on the average cumulative issuer-weighted global default rates by similar industry group.