Income taxes (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Net operating loss		$ 9,965,487
Net operating loss carry forwards		$ 2,063,797
Descriptions of foreign source withholding tax	In 2020, the Company was subject to foreign source withholding tax of 20.4% in Japan.

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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