The register
The register lists Hashdex Europe Limited in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
At Companies House the business is Hashdex Europe Limited (company number 14091110), a private limited company incorporated in 2022, 4 years ago. The registered office is at 3rd Floor 86 - 90 Paul Street, London, EC2A 4NE, EC2A 4NE. By its SIC codes the business is in finance and insurance.
For a candidate this means one less obstacle: Hashdex Europe Limited already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.