Optimistic Rollup Architecture

LayerEdge is set to revolutionize Bitcoin's scalability by implementing an innovative layer 2 scaling solution, utilizing optimistic roll-up technology, a concept more commonly associated with Ethereum. This approach allows for off-chain transaction execution while ensuring data availability through a decentralized storage system, thereby significantly boosting Bitcoin's transaction capacity without compromising its security. In the following sections, we will delve into the architecture, functionality, and advantages of LayerEdge, demonstrating its seamless integration with Bitcoin via BitVM, all while preserving the network's foundational consensus rules.


LayerEdge introduces an innovative layer 2 protocol designed to enhance Bitcoin's transaction throughput without compromising its core principles. By processing transactions off-chain and only interacting with the Bitcoin blockchain for finality and security checks, LayerEdge significantly alleviates the load on the main chain.


Off-chain Ethereum Virtual Machine (EVM)

The off-chain VM, an EVM-equivalent engine, is the heart of LayerEdge's transaction processing. It is a separate computational environment where transactions are executed and state changes occur independently of the Bitcoin blockchain. This VM is designed to be efficient and scalable, capable of handling a high volume of transactions that would otherwise burden the Bitcoin network.

Execution Environment: The VM provides a secure and isolated environment for executing transactions, ensuring they are processed accurately and efficiently.

State Management It maintains a separate state for LayerEdge, tracking account balances, smart contract states, and other relevant data.

Data Availability Layer

LayerEdge employs a decentralized storage mechanism to ensure the availability of off-chain transaction data without bloating the Bitcoin blockchain.

Decentralized Storage: Utilizes distributed storage solutions like IPFS or decentralized cloud storage to store transaction data, ensuring it is accessible for validation and auditability.

Data Compression: Before storage, data is compressed to minimize its footprint, enhancing efficiency and reducing costs.

On-chain Contracts and BitVM

LayerEdge's interaction with the Bitcoin blockchain is facilitated through BitVM, which allows for the execution of complex contracts without altering Bitcoin's consensus rules.

BitVM Integration BitVM serves as the bridge between LayerEdge and Bitcoin, verifying the correctness of off-chain computations and enabling the execution of fraud proofs.

On-chain Contracts These contracts, executed via BitVM, manage the submission of batched transaction summaries, handle disputes, and ensure the integrity of the rollup.


Transaction Processing

LayerEdge processes transactions in batches, significantly increasing throughput.

Transaction Aggregation Transactions are collected and executed in the off-chain VM, where they are aggregated into batches for efficient processing.

Batch Processing Each batch of transactions is processed collectively, allowing LayerEdge to spread the computational and storage costs over many transactions, reducing the overall cost per transaction.

Data Posting and Compression

After processing, the results are efficiently stored and summarized for the Bitcoin blockchain.

Data Compression Transaction data is compressed using advanced algorithms to reduce its size before being stored in the decentralized DA layer.

Batch Summarization A summary of each batch, including state changes and transaction outcomes, is generated and posted to the Bitcoin blockchain via BitVM.

Fraud Proofs

LayerEdge utilizes a challenge period during which the correctness of the batched transactions can be disputed.

Challenge Window After a batch is posted, there is a predefined period during which any observer can submit a fraud proof if they detect inconsistencies.

Fraud Proof Execution If a challenge is made, BitVM facilitates the execution of the fraud proof on the Bitcoin blockchain, ensuring any disputes are resolved transparently and securely.



LayerEdge significantly enhances Bitcoin's transaction capacity by offloading the bulk of transaction processing from the main chain.

High Throughput By batching transactions and processing them off-chain, LayerEdge can handle a much higher volume of transactions than the Bitcoin network alone.

Reduced Block Space Usage The rollup only posts compressed batch summaries to the Bitcoin blockchain, conservatively using block space.


LayerEdge leverages the underlying security of Bitcoin while introducing additional mechanisms to safeguard its rollup layer.

Inheritance of Bitcoin's Security By anchoring its finality and dispute resolution on the Bitcoin blockchain, LayerEdge benefits from the same level of security that protects Bitcoin.

Enhanced Security Measure The use of decentralized storage for data availability and BitVM for fraud proofs adds layers of security, ensuring the integrity and reliability of the rollup.

Cost Efficiency

The rollup model significantly reduces the cost per transaction by distributing the costs of batch processing and data storage across many transactions.

Economies of Scale Batching transactions allows LayerEdge to spread the costs of computation and data storage across multiple transactions, reducing the cost per transaction.

Optimized Data Storage Using decentralized storage and data compression minimizes the costs associated with data availability, further enhancing cost efficiency.


LayerEdge represents a significant step forward in the scalability and efficiency of Bitcoin. By leveraging optimistic rollup technology, decentralized data storage, and BitVM, LayerEdge offers a scalable, secure, and cost-effective solution for Bitcoin transactions, paving the way for broader adoption and more innovative applications on the Bitcoin network.

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