April 6 (Reuters) - Tmx Group Ltd X.TO
* Tmx group ltd says launches first blockchain-based prototype Source text for Eikon: ID:nCNW34YW9a Further company coverage: X.TO
April 6 (Reuters) - Tmx Group Ltd X.TO
* Tmx group ltd says launches first blockchain-based prototype Source text for Eikon: ID:nCNW34YW9a Further company coverage: X.TO