Build on Bitcoin (BOB) Unveils ‘OptiMine’ to Bridge Bitcoin Security with Ethereum Capabilities
Build on Bitcoin (BOB) unveiled OptiMine for Layer 2 solutions, bridging Bitcoin’s robust security features with Ethereum’s scalability.
Build on Bitcoin (BOB), the Layer 2 stack developed by the team Bitcoin DeFi platform Interlay, announced an enhanced Bitcoin security feature for blockchains named ‘OptiMine’. The new security feature enhances Bitcoin security for Layer 2 (L2) blockchains by leveraging Bitcoin’s Proof-of-Work (PoW) mechanism and connects with the scalability of Ethereum and other EVM-compatible blockchains.
Alexei Zamyatin, co-founder of BOB and co-founder and CEO of Interlay told Metaverse Post that Optmine combines the strengths of both – Bitcoin’s security and Ethereum’s smart contract capabilities, while adding scalability. He compared OptiMine to “Bitcoin’s answer to Ethereum’s restaking”.
In typical rollups, Sequencers play a crucial role in creating and proposing new blocks. Existing models for ensuring their correctness are not yet practical on Bitcoin.
“OptiMine addresses this challenge by involving Bitcoin miners in validating rollup blocks, thereby ensuring integrity without relying solely on Sequencers. This integration of Bitcoin’s PoW system adds an extra layer of security and reliability to rollups, contributing to their overall robustness,” said BOB’s Zamyatin.
To ensure the involvement of the mining community in developing OptiMine, BOB has partnered with a Bitcoin mining company (without revealing its name).
“This partnership is significant as it represents a fusion of interests and expertise between BOB’s technological innovation and the practical, operational insights of the mining community,” he added.
OptiMine Propels Bitcoin’s PoW Security into Layer 2 Solutions
OptiMine introduces a novel hybrid consensus technique called “Optimistically Sequenced Merged Mining,” enabling Layer 2 solutions like BOB to inherit Bitcoin security while being connected to other Layer 1 blockchains like Ethereum.
BOB’s Alexei Zamyatin said the technology addresses the challenges of sparse block space and high transaction fees by allowing more efficient block production through rollups and sidechains, which handle transactions off-chain. It achieves this by separating block production from PoW finalization.
“Blocks are produced at a faster rate, and the PoW finalization occurs less frequently, optimizing the blockchain’s performance. This technique helps in managing the load on the blockchain, thereby potentially reducing congestion and the associated high transaction fees,” Zamyatin told Metaverse Post.
Additionally, OptiMine offers miners an additional revenue stream through merged mining. With Bitcoin halvings decreasing direct rewards, miners can use OptiMine to simultaneously mine Bitcoin and auxiliary chains like BOB’s L2 solutions.
Zamyatin explained that this allows miners to secure multiple networks at once, compensating for reduced Bitcoin rewards. This ensures miners remain financially viable and keeps Bitcoin technology relevant in the crypto landscape post-halving events.
However, integrating Bitcoin’s PoW with Ethereum and other EVM-compatible blockchains was a complex challenge due to the differing architectures and consensus mechanisms of these blockchains.
Looking ahead, Zamyatin believes OptiMine will impact the blockchain landscape by providing a secure, scalable, and efficient solution for L2 rollups and sidechains. He added that BOB’s ultimate goal is to enable rollups on Bitcoin – and OptiMine is a first piece of the puzzle.
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