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first_img Bull Bitcoin became the first exchange to support Payjoin privacy deposits and withdrawals as well as default transactions

Bull Bitcoin, a Bitcoin-exclusive exchange, announced a deep integration with Payjoin, claiming to be the world's first Bitcoin exchange to offer Payjoin as a deposit and withdrawal option, introducing two new concepts: "default Payjoin" and "Payjoin transaction." Founded in 2013 by Francis Pouliot in Canada, Bull Bitcoin is the longest-operating Bitcoin-exclusive exchange globally, with its non-custodial platform allowing users in Canada, Europe, and Latin America to buy Bitcoin directly into their wallets or sell Bitcoin to bank accounts. The company also developed the free and open-source Bitcoin self-custody wallet BULL Wallet, which has been self-funded since its inception.Payjoin is an on-chain privacy protocol for Bitcoin that breaks the fundamental assumptions made by on-chain analysis companies about user behavior, such as the assumption that one of the unspent transaction outputs (UTXO) generated by a transaction is change returned to the sender. The protocol adds a layer of off-chain coordination that obscures user intent by making the amounts sent and returned ambiguous, thus protecting on-chain privacy without requiring a hard or soft fork of the Bitcoin consensus. When BULL Wallet users buy and sell Bitcoin on-chain through the built-in exchange, transactions will default to using Payjoin, helping buyers passively aggregate UTXOs in their wallets, reducing future Bitcoin miner fees while shrinking the Bitcoin UTXO set size and alleviating fee pressure for all users.Payjoin transactions are used to protect users from malicious actors attempting to glean their financial habits through on-chain analysis. Since Bitcoin transaction amounts are public, outsiders may infer personal salaries or investment strategies, and as a non-custodial exchange, Bull Bitcoin leaves an on-chain trace for every transaction. In December 2024, BULL Wallet became the world's first wallet to integrate the Payjoin V2 protocol, a project advanced in collaboration with Dan Gould and the Payjoin Dev Kit team, with all related wallet and exchange software being completely free and open-source. Users only need to download BULL Wallet, create a Bull Bitcoin exchange account, and log in through the BULL mobile app, with the rest of the process being automated.

first_img Zhao Changpeng: The adoption rate of cryptocurrency may take 5 to 10 years to reach 20%, and there is currently insufficient innovation in the retail sector

During a speech at the Oxford Union, Binance founder Changpeng Zhao mentioned that the adoption process of cryptocurrency is slow but irreversible. He estimates that it may take 5 to 10 years for the cryptocurrency adoption rate to reach 20%, while the middle 60% to 80% may take another 10 to 20 years, and the final 20% could take a long time. The initial phase is filled with skepticism, accelerating after surpassing 20%, and slowing down after exceeding 80%.He pointed out that in the past two years, many governments around the world have shown a significant change in their attitude towards cryptocurrency. The United States has shifted to a crypto-friendly stance, with other countries following suit. However, the upgrade of the financial system is slow, and large institutions exhibit inertia, leading to significant friction for banks to directly access blockchain.Currently, innovation in retail payment and daily use cases is still lacking. Many projects are just getting started and will need another year or two, while on the institutional side, ETFs, tokenized stocks, and stablecoins are on the rise. Different cycles focus on different aspects, shifting from early Bitcoin and ICOs to meme coins, and recently turning towards institutional adoption. He remains optimistic about this and is willing to fund developers.

A-share closing review: The STAR 50 Index surged nearly 10%, and the trading volume of the Shanghai and Shenzhen markets returned to 2 trillion

According to reports from the Financial Associated Press, the A-share market rebounded quickly in the afternoon, with the Sci-Tech 50 Index rising nearly 10% and the ChiNext Index rising over 6%. The semiconductor industry ETFs collectively rose, with the semiconductor ETF Bosera (159582) and the semiconductor equipment ETF CMB (561980) hitting the daily limit. The total transaction amount in the Shanghai and Shenzhen markets reached 2.04 trillion yuan, an increase of 334.3 billion yuan compared to the previous trading day. Over 4,600 stocks in the entire market rose, with more than a hundred stocks hitting the daily limit.On the market, the semiconductor industry chain rose, with Jingyi Equipment, Torens, Huafeng Measurement and Control, Qiangyi Co., and Jiangfeng Electronics hitting the daily limit of 20%. Northern Huachuang, Tongfu Microelectronics, and Jinhaitong also hit the daily limit. In the precious metals sector, Xiaocheng Technology hit the daily limit of 20%, while Shanjin International, Zhaojin Gold, Sichuan Gold, Chifeng Gold, and Shengda Resources also hit the daily limit. Innovative drugs and CRO concepts experienced fluctuations and rises, with Jinling Pharmaceutical, WuXi AppTec, and Kailai Ying hitting the daily limit. Computing hardware stocks rebounded in the afternoon, with New Yisheng, Zhongji Xuchuang, and Changguang Huaxin rising over 10%.Robotics and physical AI concepts performed actively, with Yongzhen Co. achieving two consecutive limits, while Fulai New Materials and Zhongma Transmission hit the daily limit, and Suochen Technology hit the daily limit of 20%. On the downside, stocks related to the "sheep" category collectively weakened, with Aoyang Health, Sunshine Lighting, Sunshine Dairy, and Baiyang Co. hitting the daily limit. By the close, the Shanghai Composite Index rose 2.16%, the Shenzhen Component Index rose 4.22%, and the ChiNext Index rose 6.4%.
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