I guess it's time to refresh this topic about BCDiploma.

They've rebranded the Framework to EvidenZ.
BCDT is the fuel of the EvidenZ ecosystem ("Blockchain Certified Data Token").
BCDiploma is one of the usage case of EvidenZ ecosystem. It's currently the only usage case, but more usage cases may be available in the future, as the EvidenZ framework enables to issue certified data on the blockchain for anything.
So far, they're working with more than 100 institutions over 16 countries.

The token, BCDT, is used to publish the certified datas on the blockchain.
Basically, each diplomas has a cost, tokens are bought from the market and 25% of the bought tokens are burnt.
EvidenZ team can handle the process of buying tokens from the market through the smart contract, but they also provied everything to institutions so they can do it by themselfs if they want.

BCDiploma was chosen by the CEF Digital for taking part in the EBSI project for 2 years, basically an European blockchain which seems to be a fork of ETH only available for the countries/companies taking part in the project.
We don't have a lof of informations as this is subject to privacy, but we can guess that it'll be to publish certified Diplomas on the EBSI blockchain.
A member working on everything related to blockchain for Europe twitted about it:
https://twitter.com/PerrineCoet/status/1346025337189244929
https://twitter.com/PerrineCoet/status/1357603227127197700
And BCDiploma has written an article after a Webinar
https://www.bcdiploma.com/en/blog?postId=492
"BCdiploma is available in production on Ethereum, Binance Smart Chain and soon on EBSI. Interoperability is one of the keys to the wider use of blockchain digital credentials."

BCDiploma was chosen by Binance to create the blockchain certificate regarding the Binance Webimarathon on BSC blockchain.
CZ and Binance twitted about it:
https://twitter.com/cz_binance/status/1357002561039949826
https://twitter.com/binance/status/1357101650176069642
CZ is probably the first to get his certificate. Binance is working with BCDiploma to publish the certificates of everyone who attended the quiz of the Binance Webimarathon and had a high enough results to suceed. Hopefully, this will be finished as soon as possible.

BCDiploma will take part in the Binance MVB Accelerator Program (https://www.binance.com/en/blog/421499824684901587/Binance-Launches-The-Most-Valuable-Builder-MVB-Accelerator-Program) to increase it's visibility.

BCDT can be bought on Uniswap/Balancer/1inch.
No CEX currently, hopefully it'll be listed on a CEX one day.
Why not Binance as the team is working with them ?

More information on:
CEF Digital : https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/CEF+Digital+Home
EBSI Project : https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/EBSI
EvidenZ/BCDiploma : https://www.evidenz.io/