ADA, which has a market value of 30 billion yuan, has also begun to enter the Bitcoin ecosystem. Cardano, like the Bitcoin network, is a UTXO model, so it actually has a very natural advantage in the Bitcoin ecosystem. According to Cardano's official promotion and the founder's previous statements, it seems that Cardano will directly cooperate with BitcoinOS on this project. BitcoinOS is responsible for implementing cross chain and asset transfer of Rollup on the Bitcoin main network, and then docking with Cardano to complete the specific smart contract operation execution. On the 5th of this month, BitcoinOS transferred 1 BTC from the Bitcoin network to Cardano without the need for a cross chain bridge and then returned it. Recently, BitcoinOS @ BTC_OS is conducting token pre-sales, and some people have asked me if it's worth fighting, so I will expand on BitcoinOS to assist everyone in making judgments. BitcoinOS is a VC free project, and no information about its financing has been found. The founder of BitcoinOS is also the founder of the Bitcoin lending platform Sovryn @ EdanYago, so it has been deeply involved in the Bitcoin ecosystem. After Sovryn launched its coin in June 2021, its FDV surged to a peak of 3.6 billion US dollars, but now it is only 17 million US dollars left. Subsequently, Sovryn incubated BitcoinOS and opened a new business. Perhaps due to the lessons learned from the previous project on the Bitcoin lending platform Sovryn, it was discovered that the extremely poor liquidity of Bitcoin in the Defi field has led to the inability of various application ecosystems around Bitcoin to develop. Therefore, BitcoinOS needs to solve the liquidity problem of Bitcoin by introducing Bitcoin into other public chains through the native Rollup gateway system without the need for cross chain bridges. Currently, it has been bound to Cardano. BitcoinOS mainly has two core technologies, namely BitSNARK and Grail. BitSNARK is a software library that uses ZK to verify Bitcoin. In July last year, it officially announced the completion of the first zero knowledge proof on the Bitcoin mainnet. Grail is a channel used to build the Bitcoin mainnet and other chains, using BitSNARK's ZK verification technology to achieve asset transfer without cross chain bridges. In addition to collaborating with Cardano of UTXO, BitcoinOS also collaborates with Arbrium of EVM system, so BitcoinOS itself is not a Bitcoin L2. You can understand it as a cross chain bridge of the previous Bitcoin, responsible for circulating BTC in the Bitcoin mainnet and other public chains. Currently, Bitcoin accounts for more than 60% of the market value of the entire cryptocurrency market, so as long as it can leverage a small share to flow into other public chains, it can self generate and inject huge liquidity. At present, the pre-sale of BitcoinOS is not progressing smoothly, with only 52% completed. On the one hand, the popularity of the Bitcoin ecosystem is already very low and not in the mainstream view. On the other hand, the pre-sale price is not cheap. Currently, it is 0.0089 US dollars, and a total of 21 billion coins have been issued, so the FDV is 180 million, which is not attractive in the current market situation. Moreover, TGE has only unlocked 10%, and the remaining will be unlocked linearly within 6 months. Therefore, it means that BitcoinOS needs to maintain an FDV of at least 200 million US dollars for 6 months after issuing coins. If it is not listed on Binance and Upbit, it is actually quite difficult