Question 1

What is BOB?

Accepted Answer

BOB is the ERC-20 token of the Build on Bitcoin (BOB) project. It can be transferred on BOB Layer 2 and is also deployed on networks such as Ethereum and BNB Smart Chain (BSC). The project positions BOB as a governance and participation token in a hybrid-chain ecosystem connecting Bitcoin liquidity with EVM applications; holding BOB does not mean holding equity in BOB Foundation, BOB Labs, or network infrastructure. When understanding BOB, distinguish the network from the token: the BOB network provides an EVM-compatible execution environment and cross-chain infrastructure, while the BOB token is an ERC-20-standard asset that can be transferred among supported networks. Accordingly, “using BOB on the BOB network” is not the same as “BOB exists on only one chain.”

Question 2

What is the purpose of holding BOB?

Accepted Answer

BOB holders can create and vote on protocol proposals, with voting weight calculated according to token holdings. The whitepaper lists proposal scopes including protocol upgrades and technical parameters, treasury allocations, network parameters, network fee assets, and ecosystem incentive programs. This means BOB's governance role is to express views on protocol rules and resource allocation; it does not automatically confer entitlement to product revenue. The whitepaper also states that governance participation is not compulsory; governance rights are exercised through proposal and voting processes on the relevant website.

Question 3

What are BOB's supply rules?

Accepted Answer

BOB has a fixed total supply of 10 billion tokens. A fixed total supply describes the cap on the number of tokens; it does not equal the circulating supply, tradable depth, or amount an individual can buy or sell at any given time. The whitepaper states that changing this supply setting requires approval by a vote of the BOB token-holder community. Supply rules are therefore connected to governance: supply does not automatically increase or decrease through ordinary on-chain transfers, and a rule change must follow the governance approval path.

Question 4

On which networks can BOB be used, and how does cross-chain transfer work?

Accepted Answer

BOB is currently listed as deployed on BOB Mainnet, Ethereum, and BSC. The project repository explains that when using Chainlink CCIP for cross-chain transfers, BOB uses lock or unlock on the BOB side and burn or mint on other chains. The purpose is to keep token representations on different chains corresponding through the bridging process, rather than unrestrictedly duplicating the same balance across multiple chains. In an actual cross-chain transfer, the user first initiates bridging on the source chain, after which cross-chain messaging and the destination chain complete the relevant state changes. The selected network and contract address must match the receiving chain: sending to the wrong network or using a non-official contract cannot be automatically recovered merely because the token names are the same.

Question 5

What does BOB's “hybrid Layer 2” design mean?

Accepted Answer

BOB is a hybrid chain: the project uses EVM compatibility to support smart contracts and applications while seeking to connect Bitcoin's security with Ethereum's composability. For users, EVM compatibility means that common Ethereum-ecosystem contract interaction patterns can serve as an application-layer foundation; it does not mean all Bitcoin assets automatically appear on the network. The key to the hybrid design is how bridging and proof mechanisms connect assets or states across different chains. Project materials identify ZK proofs, BTC staking, and native bridging toward Ethereum and Bitcoin as architectural directions. Users should therefore treat application execution, cross-chain transfers, and Bitcoin-side settlement as separate stages, rather than as one same-chain transfer.

Question 6

What did the 2025 network upgrade change?

Accepted Answer

BOB completed a network upgrade on mainnet in 2025, becoming a hybrid ZK rollup running on Ethereum: it uses ZK fault proofs in the optimistic path and uses validity proofs as needed to enforce security. This change concerns the network's proof and security-execution approach, not a reissuance of BOB's total token supply. The same whitepaper also describes further development of Bitcoin finality integration, BTC staking, and the BitVM bridge as plans or development trajectories. The completed 2025 rollup upgrade should be distinguished from bridging and finality functions still described as planned; the latter should not be treated as capabilities automatically already implemented.

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