Spoiler alert: The future of Web3 is not blockchain

The primacy of blockchain in Web3 is increasingly being questioned. While blockchain solved the double-spending problem, its inherent limitations, particularly its rigid fixation on total ordering, hinder scalability and flexibility needed for complex Web3 applications. This “serialized tyranny” throttles throughput and restricts design options.

The FastPay Mobile remittance app demonstrates that double-spending can be avoided without total ordering, inspiring systems like Linera which utilize independent local orderings while maintaining global verifiability. This approach proves a more scalable alternative is achievable. FastPay’s influence extends to protocols like POD and Sui’s single-owner objects, highlighting the potential for alternative architectures.

Concerns that total ordering is crucial for financial integrity or that decentralization depends on blockchains are misplaced. Decentralized systems fundamentally require verifiable transactions, not a precise global transaction order.

Current blockchain solutions, such as Ethereum’s Dencun upgrade and Solana’s Lattice system, still grapple with scalability issues, experiencing throughput limitations and outages. Layer-2 solutions act as workarounds, delaying transactions rather than providing a fundamental fix.

The rise of flexible payment and settlement protocols signifies a shift towards prioritizing speed and user experience over rigid total ordering. Modular blockchain frameworks like Celestia exemplify this, decoupling trusted validation from limiting sequencing. Data availability layers, execution shards, and offchain verification mechanisms further reduce reliance on traditional blockchain sequencing.

While blockchain won’t disappear, its future role may be as a universal verifier, acting as a decentralized notary within a broader, more agile infrastructure. This evolution faces challenges due to significant capital, ideological, and career investment in existing blockchain technologies. However, just as the internet surpassed early walled gardens, Web3 is poised to move beyond block-based sequencing. The future belongs to those who adapt to this technological shift.