v3.25.2
Cover - shares
 6 Months Ended
Jun. 30, 2025
Aug. 14, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Information [Line Items]    
Entity Registrant Name MYSEUM, INC.  
Entity Central Index Key 0001648960  
Entity File Number 001-40729  
Entity Tax Identification Number 47-2502264  
Entity Incorporation, State or Country Code NV  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Information, Former Legal or Registered Name DATCHAT, INC.  
Entity Incorporation, Date of Incorporation Dec. 04, 2014  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 204 Neilson Street  
Entity Address, City or Town New Brunswick  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 08901  
Entity Phone Fax Numbers [Line Items]    
City Area Code (732)  
Local Phone Number 374-3529  
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   4,209,329
Name Change Event [Line Items]    
Entity Information, Former Legal or Registered Name DATCHAT, INC.  
Common Stock, par value $0.0001 per share    
Entity Listings [Line Items]    
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol MYSE  
Security Exchange Name NASDAQ  
Series A Warrants, each warrant exercisable for one share of Common Stock at an exercise price of $4.98 per share    
Entity Listings [Line Items]    
Title of 12(b) Security Series A Warrants, each warrant exercisable for one share of Common Stock at an exercise price of $4.98 per share  
Trading Symbol MYSEW  
Security Exchange Name NASDAQ