TBC (Turing Bit Chain)

When Ethereum users lose all their assets after clicking on a phishing link, or when a smart contract vulnerability on Solana causes both project teams and users to lose everything, we are forced to reflect: Is the prosperity of DeFi built on a fragile security foundation? According to the 2024 On-Chain Security Report, asset losses due to authorization vulnerabilities throughout the year totaled up to $2.3 billion, with over 60% of cases stemming from "infinite authorization" abuse. Even more concerning is the architectural characteristic of traditional account model blockchains (such as Ethereum and BSC), which makes this risk nearly impossible to eliminate—whenever users interact with DApps, they must temporarily or permanently grant third-party contracts permission to operate their assets. But the question is: are we really limited to choosing between "convenience" and "security"?
The UTXO model of TBC public chain provides a completely different answer. It reconstructs the logic of asset interaction from the ground up: each transaction is an independent, self-contained "digital cash" transfer, and users do not need to approve asset operation rights via an approve function to any third party. This design is inspired by Bitcoin’s core principle—"Your private key, your assets"—but TBC upgrades the technology to meet the complex needs of modern DeFi. For example, its 4GB large block architecture supports tens of thousands of UTXO transactions per second, thoroughly solving Bitcoin’s long-standing throughput bottleneck; future atomic swap protocols will enable trustless cross-chain interactions with multi-chain assets (such as BTC), allowing users to participate in the TBC ecosystem without entrusting assets to centralized bridges. This means that, from a technical perspective, TBC retains the security advantage of the UTXO model’s "no authorization risk," while also enhancing performance and cross-chain capabilities to support high-frequency, diverse DeFi applications.
Based on this architecture, DeFi applications on TBC demonstrate security features that are fundamentally different from traditional ecosystems. Take decentralized exchanges as an example: users do not need to authorize the platform to operate their wallet assets; instead, they complete "payment and delivery" directly through the atomic swap feature of UTXO. Even if the platform’s smart contract has vulnerabilities, hackers cannot steal assets that users have not actively signed for. The same applies to lending protocols—assets pledged by users remain under their control at all times, and only when liquidation conditions are met are pre-signed transactions automatically executed, rather than giving the contract permission to operate assets in advance. Even NFT transactions achieve true "hand-to-hand transfer": buyers pay, and the NFT ownership is transferred via a single UTXO transfer, with no need for trust in platform intermediaries. The commonality in these scenarios is that security no longer relies on "trust" in third parties but is inherently achieved through architectural design—"trustless" by nature.
More importantly, TBC’s UTXO model is driving a "paradigm shift in security." Traditional DeFi security relies on "bug fixes" and "audits"—project teams must continuously patch contract vulnerabilities, and users must remain vigilant against authorization risks. TBC’s approach is "immune architecture"—eliminating authorization requirements from the bottom up, making most attack vectors fundamentally nonexistent. For example:
- No phishing attack risk: since there are no approve transactions, hackers cannot forge authorization pages to trick users into granting permissions;
- No contract vulnerability theft: even if developers write flawed contracts, hackers cannot directly transfer user assets;
- No infinite authorization abuse: users cannot set "infinite limits," and all transactions require explicit signatures.
This shift not only reduces users’ security anxiety but also liberates developers’ creativity—they no longer need to spend extensive effort designing complex permission management logic, allowing them to focus on product experience and innovation.
From ecosystem data, this model has been preliminarily validated; user surveys show that over 80% of migrating users cite "no need to worry about authorization risks" as the main reason for choosing TBC. In the future, with improvements in cross-chain technology (such as direct support for BTC, ETH assets in DeFi), privacy features (like zk-UTXO transactions), and the launch of institutional-grade tools (such as compliant KYC solutions), TBC is poised to become the top choice for security-sensitive users and institutions.
The security dilemma in DeFi has never been an unsolvable problem—it's just that we need to break out of the "account model" mindset. TBC public chain proves that by combining the UTXO model with innovative technology, we can build a DeFi ecosystem that is both secure and efficient: here, users do not have to compromise between convenience and security, and developers do not need to weigh functionality against risk. Perhaps this is what blockchain should look like: technology serving people, rather than people adapting to technological flaws. Choosing TBC means choosing a simpler, safer DeFi future—where asset security is not a luxury but the default state.