According to one of the project's investors, on September 1, Telegram plans to begin a public test of its blockchain - TON (Telegram open network).
During the public test, the TON network node code and instructions for installing it should appear in the public domain. Sharding (the process of breaking transactions into separate pieces to ensure scaling) and consensus (a mechanism for confirming new blocks in the blockchain) should also be available, which will allow testing the entire blockchain.