TBC (TuringBitChain)

When the size of stablecoins has surpassed the GDP of many countries, the underlying public blockchain they rely on may become the biggest bottleneck for their future development.
$230 billion in total stablecoin market cap, $145 billion Tether empire, and instant cross-border payments. These figures depict a seemingly prosperous new world of on-chain finance. But an counterintuitive fact is: supporting this massive market is still a set of "borrowed" infrastructure. When stablecoins have grown beyond many countries' GDP, the public chain they depend on may become the greatest bottleneck for future growth.
1. The structural fragility behind prosperity: the "parasitic" dilemma of stablecoins
The narrative of stablecoins has shifted from "cryptocurrency transaction medium" to "global financial infrastructure." Cross-border payments, a market with over $150 trillion in annual transaction volume, is being carved open by on-chain stablecoins. Traditional SWIFT networks typically take 3-5 days to complete a cross-border transfer and charge up to 6.5% of the transaction amount in total fees. In contrast, blockchain-based stablecoin transfers can be completed in seconds, usually costing less than $0.01. This reduction in friction has directly driven a surge in crypto payment adoption in emerging markets like Southeast Asia and Africa.
However, this prosperity is built on a fragile foundation: most stablecoins are "parasitic" on public chains that were not designed for them.
USDT and USDC are mainly issued on account-model blockchains like Ethereum and Tron. These chains were originally designed to support complex, state-shared smart contracts, not high-frequency, low-cost simple value transfers. This leads to a fundamental contradiction: the core use case of stablecoins—payments—requires extremely high throughput, near-zero latency, and almost zero fees; yet, the underlying infrastructure must balance global state synchronization and complex smart contract execution, resulting in significant performance compromises.
The result is a strange cycle: whenever stablecoin adoption rises due to a hot spot (such as increased remittances in emerging markets), the gas fees on the underlying public chain also spike. During the DeFi summer of 2021, simple USDT transfers on Ethereum once exceeded $50 in fees. This directly contradicts the original goal of financial inclusion: users who need low-cost remittance services are instead blocked by high on-chain costs.
A deeper hidden risk lies in security and finality of settlement. Under the account model, complex smart contract interactions introduce endless possibilities but also huge risks. Reentrancy attacks, contract bugs, oracle manipulations... these risks are incompatible with stablecoins' role as a "value scale." An asset meant to serve as "digital cash" operating in an environment full of unpredictable smart contract risks is a systemic mismatch.
Existing solutions—whether shifting to other high-performance Layer-1s or relying on various Layer-2 scaling solutions—are merely patches within the "parasitic" framework. They address some performance issues but cannot resolve the fundamental contradiction at the model level: the global state of the account model is inherently a serial processing bottleneck.
2. The root cause: we chose the wrong "container" for value transfer
Is there a way to fundamentally match the core needs of stablecoins—"efficient, secure, and inexpensive value transfer"? The answer has always been in front of us but often overlooked by most projects: return to Bitcoin's UTXO model and make it programmable.
This is not a novel hypothesis but a validated design philosophy. The Bitcoin network itself is the most secure and decentralized value settlement layer in human history. Its UTXO model has two native advantages in payment scenarios: privacy (transactions are hard to trace) and parallelism (independent UTXOs can be processed concurrently). However, Bitcoin's non-Turing complete scripting language prevents it from supporting essential logic like stablecoin issuance, redemption, and compliance checks.
Thus, the industry faces two diverging paths. One is to fully switch to an account model like Ethereum, trading flexibility for performance and model purity. The other is to enhance UTXO with sidechains, drive chains, or complex multi-layer structures (like RGB protocol), but these often sacrifice security assumptions or user experience.
The core issue is that everyone assumes "UTXO cannot support complex logic on Layer-1" is an insurmountable technical barrier. Therefore, all solutions avoid deeply modifying the UTXO model, opting either to start from scratch or to patch it with complex fixes. This creates an awkward situation: the most suitable model for a settlement layer (UTXO) is abandoned due to lack of programmability, while the widely adopted programmable model (account model) inherently conflicts with high-efficiency value transfer.
The real breakthrough lies precisely in overcoming this "default barrier." If we can enable Turing-complete smart contracts on UTXO without destroying its core advantages (parallelism, privacy, simplicity), then a dedicated underlying settlement layer tailored for stablecoins and global payments becomes truly possible.
This is not just theoretical. Projects are already making verifiable progress on this "less-traveled road."
3. Native UTXO smart contracts: overlooked optimal solution and TBC's practice
While the market debates between Layer-2 rollups and heterogeneous chains, TuringBitChain has chosen a more fundamental technical path: transforming the UTXO model itself to support Turing-complete smart contracts on Layer-1. This is not just "another Bitcoin L2," but a bottom-up reconstruction starting from transaction generation.
TBC's core innovation is its TuringContract. Using a novel OP_PUSH_CODE technique, it embeds smart contract code and data into the UTXO creation and consumption process, achieving "local Turing completeness." Each contract's execution is isolated within specific UTXO sets, fundamentally different from account models where all contracts share a global state. The immediate benefit is that transactions involving different contracts can be processed in parallel without blocking each other.
What does this mean for stablecoins? Imagine a cross-border payment platform handling millions of small USDT remittances from Southeast Asia, Africa, and Latin America simultaneously. On Ethereum, these transactions would enter the same mempool, compete for block space, causing network congestion and fee spikes. In TBC's UTXO model, as long as these transactions consume different UTXOs (which is common), they can be verified and packaged in parallel by different nodes. This is the theoretical foundation for unlimited scalability.
Performance data clearly illustrates the difference. TBC testnet has achieved over 13,000 TPS, not by sacrificing decentralization (it uses the same SHA-256 PoW consensus as Bitcoin), but by unleashing UTXO parallelism. In contrast, Ethereum's mainnet TPS has long been around 15-30, and even with optimistic rollups, the theoretical TPS limit is usually 2000-4000, with withdrawal delays.
Some may counter: "Other UTXO chains, like Cardano, also support smart contracts, but performance hasn't improved by orders of magnitude." The key difference is in the implementation layer. Cardano's EUTXO model is innovative, but its contract execution still largely depends on coordinating global state. TBC's TuringContract is a pure Layer-1 implementation, where contract logic directly operates within UTXO consumption rules, without extra consensus or state layers, making it shorter and more efficient.
More importantly, fee models. Traditional blockchains face the paradox "more users, higher fees," severely limiting stablecoins' development as inclusive financial tools. TBC's layered hashing and pipelined processing enable dynamic expansion of block capacity to terabyte levels. Its economic design aims for transaction fees to approach zero as user scale grows. This is a disruptive advantage for micro-payments involving millions of transactions.
Of course, challenges exist. UTXO developer ecosystems need to be built from scratch, and smart contract programming paradigms differ from EVM, creating adoption barriers in the short term. But the existence of cross-chain modules like TuringBridge provides pathways for ecosystem integration. In the long run, a dedicated settlement layer optimized for value transfer—simple, high-performance, and secure—will be irresistibly attractive to stablecoin issuers and payment providers.
4. From "parasitic" to "symbiotic": a future designed specifically for value flow
Looking ahead, the stablecoin market will not stop at $230 billion. As CBDCs are explored and traditional financial assets are tokenized, the scale of on-chain value flow will grow exponentially. The bottleneck of underlying infrastructure will become even more apparent.
The future landscape may no longer be "one public chain to rule them all," but a division of labor among specialized chains. Some focus on complex DeFi derivatives trading (requiring strong state sharing), others on high-throughput asset settlement and payments. A high-performance settlement layer based on UTXO-native smart contracts could become the ultimate form of the latter.
In this scenario, TBC and its BVM ecosystem are positioned very clearly: not aiming to be "the world computer," but "the world settlement layer." It does not seek to host all types of smart contracts but focuses on perfecting value transfer (including stablecoins, asset tokens, CBDCs)—doing it with the security of Bitcoin, the speed of the Lightning Network, and the cost-efficiency of text messaging.
When cross-border payments, payroll, supply chain finance, and other massive transactions no longer require paying high premiums for network congestion and uncertainty, true financial inclusion will take a key step forward. Stablecoins will no longer be just speculative instruments or tools to escape fiat devaluation but will become the "new blood" for reshaping global capital flows.
The $230 billion market calls for an underlying infrastructure that is no longer "barefoot." Should we continue building skyscrapers on borrowed foundations, or return to the essence of value transfer and rebuild a foundational layer that truly matches its needs? This choice will determine the growth rate and ceiling of the next stage of crypto finance.
TBC has provided a technical answer through two years of pioneering practice. Meanwhile, the market is voting with real money for "payment-first" infrastructure. When stablecoins reach trillions in scale, whoever masters the settlement layer's efficiency will control the pulse of the new era of finance.