Bitcoin Core v30 and TBC: A Cross-Temporal Resonance and Alignment in Technology and Roadmap

In October 2025, the beta version of Bitcoin Core v30.0 was released, quietly removing the 80-byte limit on the OP_RETURN data field and increasing the amount of data that can be embedded in a single transaction to 100KB. This seemingly simple parameter adjustment is, in fact, a historic recognition by the Bitcoin ecosystem of the TBC technical route. From OP_RETURN expansion to the concept of large blocks, from the embryonic form of smart contracts to the on-chain data revolution, every step of Bitcoin v30’s transformation validates TBC’s foresight as the “vanguard of Bitcoin innovation.”

I. Technical Convergence: Bitcoin v30’s Implicit Reproduction of TBC’s Core Design

When TBC was launched, it proposed the radical idea of “reconstructing the UTXO model to achieve large blocks + smart contracts,” which at the time was seen as a rebellious attempt against the Bitcoin ethos. However, as the Bitcoin mainnet exposed functional deficiencies in Layer 2 scaling solutions (such as the Lightning Network), the community gradually realized that relying solely on sidechains and middleware could not meet the needs of complex applications. TBC validated a completely different path through a hard fork—releasing Bitcoin’s original potential by reconstructing the underlying protocol while maintaining decentralization. The OP_RETURN expansion in Bitcoin v30 is an implicit reproduction of TBC’s technical route: the former achieves data expansion through software optimization, while the latter breaks performance boundaries through hardware reconstruction, but both point to the same goal—unlocking the potential of on-chain data. TBC’s radical innovation once sparked controversy, but the market has voted with its feet to prove its value, enabling TBC to cover fields such as payments, NFT, and DeFi. Its core advantage lies in: the UTXO model’s natural suitability for parallel processing, 4GB block capacity easily supporting high-frequency transactions, and the BVM architecture enabling near-zero gas smart contract execution. These features not only fill gaps in the Bitcoin ecosystem but also reveal the underlying law of blockchain technology—performance and security are not mutually exclusive; the key is how to balance them. Although the expansion in Bitcoin v30 does not touch the block size limit, its relaxation of OP_RETURN has laid the groundwork for future Layer 1 functionality enhancements. It is foreseeable that as the Bitcoin mainnet gradually unlocks data storage capabilities, TBC’s UTXO smart contract architecture will become the preferred reference for developers to migrate to.

II. Route Convergence: TBC’s Radical Exploration of Bitcoin’s Technical Boundaries

Although the expansion in Bitcoin v30 does not touch the block size limit, its relaxation of OP_RETURN has laid the groundwork for future Layer 1 functionality enhancements. It is foreseeable that as the Bitcoin mainnet gradually unlocks data storage capabilities, TBC’s UTXO smart contract architecture will become the preferred reference for developers to migrate to. From the perspective of technological evolution, the adjustment in Bitcoin v30 is more like a preview of a “self-revolution.” Over the past five years, the Bitcoin core team has always wavered between “conservatism” and “innovation”: the Taproot upgrade introduced smart contract logic, Schnorr signatures optimized transaction efficiency, but these patches have never been able to break through the shackles of Layer 2. The emergence of TBC is like a mirror, reflecting the real needs of the Bitcoin ecosystem—developers desire an Ethereum-like development experience within a secure framework, and users need trustless on-chain services. This OP_RETURN expansion is less a compromise to TBC and more a signal of Bitcoin’s proactive embrace of change. In the future, as Bitcoin Layer 1 functionality is gradually enhanced (such as Schnorr signature extensions), its technical route will increasingly converge with TBC: the former continues Satoshi Nakamoto’s vision through “phased expansion,” while the latter validates technical possibilities through “one-step reconstruction,” and both will ultimately converge under the consensus of “security first.”

III. Future Outlook: TBC—The “Ideal State” and Route Beacon of the Bitcoin Ecosystem

TBC has demonstrated through hard fork reconstruction of the UTXO model that the Bitcoin ecosystem, while maintaining security, can still achieve performance leaps through radical innovation. Its “large block + UTXO smart contracts + cross-chain interconnection” trinity design provides technical feasibility validation for Bitcoin v30’s OP_RETURN expansion. In the future, Bitcoin’s Layer 1 upgrades (such as Schnorr signature extensions) may resonate with TBC’s UTXO smart contracts. The division of labor between the main chain and forked chains will become clearer: the Bitcoin mainnet will continue to play the role of “digital gold + data anchor,” meeting basic needs through Layer 1/2 combinations; the TBC public chain will take up the banner of high-frequency transactions, complex contracts, and cross-chain interoperability. The ultimate form of cross-chain interoperability may give rise to a “Bitcoin public chain alliance,” forming a layered architecture of “security layer + performance layer.” Bitcoin’s self-revolution has quietly begun. The OP_RETURN expansion in v30 exposes its ambition of “not wanting to be surpassed,” while TBC’s benchmark role sets a “performance-first under security” paradigm for future hard fork projects. When OP_RETURN transforms from a “data shackle” to an “on-chain canvas,” and when large blocks shift from being a “flood beast” to a “performance cornerstone,” a brand new era for Bitcoin is dawning—here, the main chain and forked chains are no longer competitors, but a symbiotic and prosperous ecological community.

IV. Inheritance as One: TBC—The Genetic Map of Bitcoin Evolution

The OP_RETURN expansion in Bitcoin v30 may seem like a limited Layer 1 improvement, but in reality, it is the prelude to the entire ecosystem aligning with the TBC route. The large block + UTXO smart contracts + cross-chain interconnection achieved by TBC through hard fork reconstruction is essentially the “extreme squeeze” of the Bitcoin mainnet within a security framework. The relationship between the two is not competition, but rather a collaborative evolution of “main chain maintaining orthodoxy, forked chains innovating unexpectedly”:

• Bitcoin mainnet: continues to safeguard the cornerstone of value, meeting basic needs through Layer 1/2 combinations;
• TBC public chain: as the concrete carrier of the “Bitcoin smart contract layer,” takes up the banner of high-frequency transactions, complex contracts, and cross-chain interoperability, becoming the underlying engine of digital gold liquidity.

In this technological transformation, TBC has not only validated the expansion potential of the Bitcoin ecosystem, but with its technological advancement and ecological prosperity, has quietly become the practitioner of the next generation Bitcoin standard. As Satoshi Nakamoto wrote in the white paper: “We very much need a system whose base protocol never needs to be modified.” TBC, by “forking as upgrading,” practices this concept—TBC is not a betrayer of Bitcoin; on the contrary, it is the inevitable product of Bitcoin’s evolutionary path.