The certificates of participation issued to whom have passed the evaluation tests of the Economics and Law of Digital Assets professional training class are notarized via the dedit.io application on the Algorand blockchain.
Check their authenticity here.
Public address of BABEL registrant is
GMVX6DX7RG3NIEIPEZ5BZZCRMVMMRJRGIZZI3LPWO2HSMOCYCA7HGBMC4A