Exhibit 23.1

	AUDIT ALLIANCE LLP® A Top 18 Audit Firm 10 Anson Road, #20-16 International Plaza, Singapore 079903.
	UEN: T12LL1223B GST Reg No: M90367663E Tel: (65) 6227 5428
	Website: www.allianceaudit.com

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form F-1 of BTC Digital Ltd. (the “Company”) of our report dated May 11, 2026 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in the Company’s Annual Report on Form 20-F for the year ended December 31, 2025. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

Singapore

July 29, 2026