# Rollup Application Technology

Implementing Rollup contracts on Bitcoin is a crucial technology that ensures the current state root is updated to the correct new root after processing a batch of transactions.&#x20;

<figure><img src="https://822513904-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7f4I1WQOxH3UPABdsFXk%2Fuploads%2Fr42noTvWXN248zVCm75O%2F4.jpg?alt=media&#x26;token=bd5ec93f-d031-42c7-86e9-903907584f31" alt=""><figcaption></figcaption></figure>

**Below is a simplified JavaScript example of ZK-Rollup for illustration:**

```
// Simplified example of ZK-Rollup
class ZKRollup {
    constructor() {
        this.transactions = []; // Store transactions
        this.merkleTree = new MerkleTree(); // Merkle tree for transaction verification
        this.currentRoot = this.merkleTree.getRoot(); // Current state root
    }

    addTransaction(transaction) {
        this.transactions.push(transaction);
    }

    submitBlock() {
        // Bundle transactions into a block
        const block = this.transactions;
        // Update Merkle tree
        this.merkleTree.addTransactions(block);
        // Update current state root
        this.currentRoot = this.merkleTree.getRoot();
        // Submit block to the Bitcoin main chain
        this.submitToBitcoin(block);
        // Clear transaction list
        this.transactions = [];
    }

    submitToBitcoin(block) {
        // Submit the summary of the block to the Bitcoin main chain
        // Actual implementation needs to consider Bitcoin's transaction mechanism and consensus rules
    }
}

// Simplified version of Merkle tree
class MerkleTree {
    constructor() {
        this.transactions = [];
        this.root = null;
    }

    addTransactions(transactions) {
        this.transactions.push(...transactions);
        this.buildTree();
    }

    buildTree() {
        // Logic for building the Merkle tree
        // Actual implementation needs to consider the Merkle tree construction algorithm
    }

    getRoot() {
        return this.root;
    }
}

```

*The above provides a high-level overview of the technical logic of OpenBRC. Actual technical details may be more complex, depending on the implementation and design.*

**OpenBRC Overview: A Pioneer in Blockchain Services**

OpenBRC is designed to offer a spectrum of blockchain-based services, ranging from token issuance and decentralized exchanges to digital certificates. What sets this platform apart is its deployment of a unique consensus mechanism known as "Merge-Mined Proof of Work," enabling it to merge mine with other cryptocurrencies like Bitcoin, thereby enhancing network security.

The platform features a dual-layer structure that allows for the simultaneous maintenance of network security and the creation of scalable smart contracts. To achieve this goal, OpenBRC leverages Syscoin's modified version of the Ethereum Virtual Machine (EVM) called NEVM. This modification incorporates Zero-Knowledge (ZK) proofs, delivering an impressive transaction processing capacity of up to 210,000 transactions per second (TPS).

The innovative architecture of OpenBRC positions it as a distinctive player in the blockchain space. Its ability to merge mine with prominent cryptocurrencies and its scalable smart contract capabilities make it stand out in providing a wide range of services and applications. A visual representation of the OpenBRC architecture aids in better comprehending the structure and functionality of this groundbreaking platform.

OpenBRC not only prioritizes network security but also aims to revolutionize the landscape of blockchain services, setting itself apart through its unique features and capabilities.

<figure><img src="https://822513904-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7f4I1WQOxH3UPABdsFXk%2Fuploads%2FltYqwpX2MVq1eN3DsfBU%2F5.jpg?alt=media&#x26;token=5333edff-d6db-4ae5-9380-af8cd4d1b241" alt=""><figcaption></figcaption></figure>
