Related party transactions and balances - Summary of compensation for key management (Details) - Key management personnel of entity or parent [member] - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure of transactions between related parties [line items] | ||
| Salaries | $ 1,120,768 | $ 970,234 |
| Retirement benefit | 231,146 | 185,970 |
| Total | $ 1,351,914 | $ 1,156,204 |