BTC Track Seed Player Zulu: Pioneering Dual-layer Structure

The BTC ecosystem construction competition is in full swing, with participants such as Merlin, BounceBit, and B2 network currently leading the pack. However, the finish line is still far off, and some closely following participants should not be underestimated, as they could potentially turn the tables at any time, making them worthy of our attention.

Today, the participant we are researching is called Zulu Network @zulu_network. It is the first in the BTC ecosystem to feature a dual-layer structure.

Zulu's layer 2 is a zkEVM that is EVM-compatible. EVM projects can be quickly and cost-effectively deployed on ZuluPrime, realizing an ecological solution. The other layer is Layer 3, called ZuluNexus. It innovatively unifies UTXO and account asset types and achieves smart contract innovation based on the UTXO model. This means that it can maximize the advantages of UTXO and support future innovations on UTXO.

In the past few years, most of the blockchain innovations have been focused on the EVM. Therefore, most of the ideas for layer 2 in the Bitcoin ecosystem aim to introduce the EVM ecosystem onto Bitcoin. However, in the past year or two, it has become apparent that EVM innovation seems to have encountered a bottleneck.

Another innovative direction is based on UTXO. UTXO can be said to be the orthodox of Bitcoin, so the market is full of expectations for its innovation. For example, the recent CKB essentially represents the market's expectations for UTXO innovation. The infrastructure based on UTXO is becoming increasingly sophisticated, with the CKB team launching the RGB++ Bitcoin programmable solution. The Bitcoin RAAS service provider UTXO Stac offers developers one-click creation of Bitcoin L2, equivalent to OP Stack, and integrates the RGB++ protocol. It is also developing shared sequencers, shared verification, and other services. This means that the explosion of the UTXO ecosystem may be just around the corner.

This is where Zulu is worth paying attention to. If new projects based on UTXO suddenly explode, Zulu is one of the few in the market that supports UTXO and can simultaneously support both the EVM and UTXO ecosystems.

Account Mode and UTXO Mode

Blockchain serves as a decentralized ledger and has two recording modes: UTXO (Unspent Transaction Output) and Account mode. Ethereum adopts the Account mode, which is the familiar account address system. Accounts have their own state. This model has better programmability, is easier for developers to understand, and has lower costs for batch transactions.

Bitcoin, on the other hand, adopts the UTXO model. Simply put, when a miner mines a BTC, if it is sent to address A, then address A owns a UTXO. If it is sent to two addresses, it is split into two UTXOs. In the Bitcoin network, the assets of each address are calculated based on how many UTXOs it has. Satoshi Nakamoto adopted UTXO, which has the advantage of higher asset security because transactions cannot be duplicated. It can also handle multiple UTXOs simultaneously, allowing for parallel transactions and encouraging scalability innovation.

It can be said that both the account mode and UTXO mode have their pros and cons. They have distinct logics, so UTXO also has the potential to bring about something different.

Zulu Network's Network Structure

Layer 2

Zulu's layer 2, ZuluPrime, operates as a second-layer solution for Bitcoin, focusing on EVM compatibility and providing complex Dapp applications on the Bitcoin network, allowing the Ethereum ecosystem to enter the Zulu Network quickly and cost-effectively. ZuluPrime builds ZKEVM on the zkSync ZK stack.

BitVM was proposed by Robin, introducing programmability to the Bitcoin network. It uses on-chain verification and off-chain computation. BitVM means that Bitcoin can now have Turing completeness like any other chain: allowing developers to run complex contracts on Bitcoin without changing its basic rules. However, in terms of verifying transaction execution validity, BitVM is relatively inefficient. To address this issue, Zulu has introduced zero-knowledge proofs (ZKP), which, from a verification perspective, alleviate the impact of higher-level transaction types, as the ZKP verification program always runs on BitVM regardless of the transaction logic. Given that ZKP verification programs have lower computational requirements, these networks are conducive to rapid verification of proofs, ensuring system security.

Layer 3

Zulu's layer 3, called ZuluNexus, is directly deployed on ZuluPrime and seamlessly interacts with it. The core of Nexus is to unify UTXO and account asset types on the Zulu network.

ZuluNexus builds a virtual machine that is completely different from EVM, which can simultaneously support account type and UTXO type states. In practice, UTXO commitment trees may also be maintained. This approach is based on recent experience, where account types have shown greater compatibility with smart contracts, as evidenced by Ethereum's success. At the same time, UTXO types are more suitable for private transactions, as transactions based on UTXO types are executed by users locally and then verified by network nodes. Many privacy-focused projects, including Zcash, Aleo, Aztec, Ola, are all based on UTXO types.

Zulu Status

Zulu has launched a testnet called Lwazi. It has also introduced an activity where participants can earn Zulu Genesis Points (ZGP) after completing the test. Within one day of its launch, 25,000 users registered. As of yesterday, it has over 640,000 registered users, with the testnet exceeding 5 million transactions. Users can participate in various activities, including registration, check-ins, faucet water collection, transfer transactions, cross-chain bridges, DEX transactions, providing liquidity, and inviting friends, among others.

For specific details, please refer to the official documentation:

https://www.yuque.com/zulunetworkzhongwenshequn/zvggg8/ll78rsqpuigwhscg?singleDoc#

Core Team

Zulu's core team mainly comes from the United States and Canada, with years of rich experience in blockchain development and operations. Co-founder Luke Vinci previously held strategic positions at J.P. Morgan and Nomura, and later transitioned to the cryptocurrency industry, where he served as a senior product manager at OKX. Luke Vinci has expertise in machine learning, financial products, and blockchain, and holds a master's degree in computer science.

Another co-founder, Eric Lifson, has 7 years of experience in traditional marketing and has worked for well-known companies such as Procter & Gamble, McDonald's, and General Mills. Since entering the blockchain industry in 2017, he has entrepreneurial experience in both public chain ecosystems and DeFi.

In summary:

In the thriving BTC ecosystem project today, Zulu's pioneering dual-layer structure not only can be compatible with the EVM ecosystem but also innovatively unifies UTXO and account asset types, making it capable of accommodating potential UTXO innovations in the future. Many overseas media outlets have also reported on Zulu Network, including CoinMarketCap, CryptoSlate, hackernoon, TechBullion, NewsCrypto, etc. Therefore, Zulu Network is worth paying attention to, as it could potentially overtake others at any time.

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