Income taxes - Operating Loss Carryforwards (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 10,056,026	$ 1,836,077
Unrecognized tax benefits	0	0
Domestic Tax Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	4,649,994	1,476,655
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 5,406,032	$ 359,422
Net operating loss carryforwards, subject to expiration, period	20 years