v3.25.2
Cover
Jun. 20, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 20, 2025
Entity File Number 001-41984
Entity Registrant Name Black Hawk Acquisition Corporation
Entity Central Index Key 0002000775
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 4125 Blackhawk Plaza Circle
Entity Address, Address Line Two Suite 166
Entity Address, City or Town Danville
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94506
City Area Code 952
Local Phone Number 217-4482
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Units, each consisting of one ordinary share and one right  
Title of 12(b) Security Units, each consisting of one ordinary share and one-fifth (1/5) of one right
Trading Symbol BKHAU
Security Exchange Name NASDAQ
Ordinary shares, par value $0.0001 per share  
Title of 12(b) Security Ordinary shares, par value $0.0001 per share
Trading Symbol BKHA
Security Exchange Name NASDAQ
Rights, each right entitling the holder to receive one-fifth of one ordinary share  
Title of 12(b) Security Rights, each right entitling the holder to receive one ordinary share
Trading Symbol BKHAR
Security Exchange Name NASDAQ