Interesting information. The Open Network (TON) has released synthetic bitcoins (BTC) so that owners can easily use decentralized finance (DeFi).
TON developers have created the TON Teleport BTC bridge, with which bitcoins can be sent to the TON network. At the same time, the coins will automatically be converted into synthetic tgBTC bitcoins, the exchange rate of which is tied to the price of BTC in a ratio of 1:1. Accordingly, when transferring tgBTC to the bitcoin network, synthetic tokens will be exchanged for BTC using a smart contract. Synthetic bitcoins can be transferred to decentralized services on the TON blockchain to earn income, for example, by lending coins or blocking them for a while. 
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