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Build On Bitcoin - Your Uncle BOB
Nicolai Søndergaard
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Key Takeaways
8 min read
  • With Babylon’s finality layer and direct data anchoring planned in Phase 3, BOB is actively moving away from Ethereum for security and availability.
  • EVM + Solidity + ETH for gas today. BTC gas payments are on the roadmap and so is full migration to Bitcoin-native data posting.
  • Staking via BOB can earn you points across several different projects, including BOBs own points, spice.

Introduction

As Bitcoin infrastructure continues to evolve, a growing number of projects are exploring how to extend its functionality beyond basic transfers and custody. One of the more technically ambitious efforts in this space is BOB (Build on Bitcoin) a hybrid layer-2 network aiming to combine Bitcoin’s security with Ethereum’s programmable ecosystem.

Built on the Optimism OP Stack and incorporating tools like BitVM and Babylon, BOB doesn’t fit neatly into existing categories. It operates like an Ethereum rollup, supports EVM smart contracts, and integrates Bitcoin as a settlement and security layer. The goal is to create a platform where both Ethereum-native...