Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Mar. 31, 2023	May 22, 2023
Document Information Line Items
Entity Registrant Name	GLOBAL BLOCKCHAIN ACQUISITION CORP.
Document Type	10-Q/A
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		22,012,500
Amendment Flag	true
Amendment Description	This Amendment No. 1 to the Quarterly Report on Form 10-Q of Global Blockchain Acquisition Corp. (the “Company”) for the quarterly period ended March 31, 2023, originally filed with the Securities and Exchange Commission on May 22, 2023 (the “Original Filing”), is being filed solely to correct a typographical error contained in Exhibit 31.1 submitted with the Original Filing, and includes the certifications of the Company’s principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, as required by Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended.Except as described above, no other changes have been made to the Original Filing, and this Form 10-Q/A does not modify, amend or update in any way any of the financial or other information contained in the Original Filing. This Form 10-Q/A does not reflect events that may have occurred subsequent to the filing date of the Original Filing.
Entity Central Index Key	0001894951
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-41381
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-2045077
Entity Address, Address Line One	6555 Sanger Road
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Orlando
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32827
City Area Code	(407)
Local Phone Number	720-9250
Entity Interactive Data Current	Yes
Common Stock, par value $0.0001 per share
Document Information Line Items
Trading Symbol	GBBK
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Security Exchange Name	NASDAQ
Redeemable warrants, each warrant exercisable for one share of common stock at an exercise price of $11.50 per whole share
Document Information Line Items
Trading Symbol	GBBKW
Title of 12(b) Security	Redeemable warrants, each warrant exercisable for one share of common stock at an exercise price of $11.50 per whole share
Security Exchange Name	NASDAQ
Rights, each entitling the holder to receive one-tenth of one share of common stock
Document Information Line Items
Trading Symbol	GBBKR
Title of 12(b) Security	Rights, each entitling the holder to receive one-tenth of one share of common stock
Security Exchange Name	NASDAQ

Global Blockchain Acquisition Corp. 10-Q/A