To combine Bitcoin’s robust security with the flexibility of the EVM, Syscoin uses advanced rollup technology

Despite innovative layer-2 protocols, scalability and smart contract functionality remain headaches for Web3 developers

Bitcoin is renowned for its robust security, which is crucial for a trustless system. However, this strength comes at the cost of limited flexibility, posing challenges for Web3 developers seeking to combine smart contract functionality with the same level of trustworthiness.

While layer-2 protocols like optimistic and zero-knowledge rollups are emerging to address Bitcoin’s scalability constraints, most layer-2 models leave critical vulnerabilities in client security and data availability.

Layer-2 protocols are designed to process transactions in batches, summarizing them into proofs that are relayed to the main chain, aiming to mitigate throughput bottlenecks and high transaction fees.

Despite the promise of Bitcoins Taproot update for smart contracts — self-executing agreement codes— they fall short of fully meeting scalability needs without compromising security.

On the other hand, the Ethereum network, known for its convenience in developing decentralized applications (DApps), cannot achieve the same level of security as Bitcoin.

Alternatives like sidechains, which operate under their own rules while connecting to the main blockchain, present a scalability alternative, but research indicates that issues may arise from the mechanisms used to link to the main chain.

Now, Syscoin is introducing a new approach with its Edgechains, combining the strengths of both layer-2 and sidechain designs while introducing key innovations.

Scaling Web3 with Bitcoin security

Bitcoin’s PoW mechanism requires network participants to perform massive calculations to verify transactions and create blocks, effectively preventing fraudulent activities by making the cost of cheating higher than potential profits. On the other hand, EVM offers convenience to developers who can write and deploy smart contracts to execute automatically on a decentralized network.

Syscoin’s Edgechains are independent, modular blockchain layers that bring together Bitcoin’s PoW security with advanced scalability solutions. Unlike traditional sidechains, which operate independently but often lack robust security, or layer-2 solutions, which rely on the main chain for security, Edgechains combine the strengths of both — and introduce key innovations like merge-mined security and native modularity. They also lay the foundation for Bitcoin+, a new standard for transforming Bitcoin into the secure base layer of a scalable, interoperable Web3 economy. ZkSYS, the first live Edgechain implementation, is currently operating on testnet, showcasing the modular execution, trustless finality and low-cost scalability that Edgechains make possible.

Edgechains integrate both layer-2 and sidechain design principles while introducing key innovations. The primary distinction is that Edgechains leverage Bitcoin’s PoW security through merge-mining, ensuring a high level of trust and resistance against attacks, something L2s and sidechains do not inherently offer. By enabling miners to earn additional revenue from Syscoin while reusing the same computational work, Edgechains create a symbiotic relationship that strengthens both networks without diluting Bitcoin’s security.

Further strengthening network resilience, Edgechains introduced AI-powered Sentry Nodes, which enhances decentralized sequencing, autonomous governance and fraud detection. Multi-quorum chainlocks, Syscoin’s finality mechanism, prevent selfish mining attacks even against miners controlling significant portions of the hashrate.

Designed to cooperate with each aspect of the Syscoin ecosystem, Edgechains employ a zkRollup model and a layer-1 proof of data availability mechanism to enable high-throughput, low-cost transactions by bundling multiple transactions into a single proof, reducing data load on the main chain without sacrificing security.

Edgechains are enhancing the Bitcoin network’s capacity to process transactions swiftly and securely without overloading by utilizing a zkRollup mechanism. Instead of assuming transactions are valid until challenged, like optimistic rollups, zkRollup technology uses cryptographic, zero-knowledge proofs to verify all transactions upfront before they are submitted to the chain.

These proofs guarantee the correctness of transactions without revealing data or requiring any trust in third parties. ZkRollups eliminate the need for lengthy fraud challenge windows, enabling near-instant finality and significantly reducing onchain data requirements. This approach ensures all necessary information is verified without congesting Bitcoin’s main system.

Edgechains framework enables trustless execution of complex applications through zero-knowledge cryptography and near-instant finality — secured by merge-mined proof-of-work. It significantly boosts throughput and lowers transaction costs without compromising Bitcoin’s core principles. This architecture powers Bitcoin+, a native Bitcoin-EVM ecosystem that brings modular scalability and smart contract utility to Bitcoin itself.

The platform also takes advantage of the unspent transaction output (UTXO) model alongside AVG capabilities to provide modularity and scalability. UTXO is a method used by some blockchains like Bitcoin, where each transaction begins with coins that haven’t been spent from previous transactions and ends with output coins that are available for future transactions This hybrid model positions Syscoin uniquely in the industry, offering both Bitcoin’s proven accounting model and Ethereum’s programmable flexibility within a single architecture.

Addressing scaling challenges in client security, Edgechains mitigate vulnerabilities that other layer-2 models often overlook, such as data availability, censorship resistance and fraud proofs.