Layer-2 blockchain community Construct on Bitcoin (BOB) has raised $21 million in strategic funding rounds since December 2024, with $9.5 million secured in its newest spherical, in response to a press launch despatched to Cointelegraph.
Many current buyers have elevated their monetary commitments within the newest $9.5 million strategic spherical, together with exiting investor Fort Island, together with new strategic buyers Anchorage, Amber Group and sats Ventures.
Nic Carter, founding companion of Fort Island, informed Cointelegraph why they’ve determined to double down on their funding:
“We additionally proceed to consider that Bitcoin would be the bedrock of DeFi, and we predict BOB can be a marquee L2.”
Dominik Harz, chief expertise officer at BOB, informed Cointelegraph the corporate’s subsequent main milestone is launching the BitVM bridge into manufacturing. The bridge would allow native Bitcoin (BTC) for use in DeFi on BOB and facilitate BTC transfers to different chains.
BOB plans to launch BTC-staked finality by the top of 2025, with future upgrades enabling BTC-secured bridges to Solana, Ethereum, Sui and different sensible contract chains.
“Customers, establishments, apps and wallets all over the place will have the ability to entry native BTC DeFi by way of BOB,” Harz stated.
BOB’s testnet lately went stay with assist from companions together with Lombard, Amber Digital and RockawayX. A mainnet launch is deliberate for the fourth quarter of 2025.
Bridging Bitcoin and Ethereum
BOB makes use of the hybrid chain mannequin, which mixes the safety and stability of Bitcoin with the flexibility of Ethereum’s DeFi ecosystem.
BOB is a hybrid as a result of it’s concurrently a member of the Superchain, leveraging the OP Stack as an Ethereum rollup, and likewise a Bitcoin-secured community, integrating with Babylon for Bitcoin finality by way of billions of {dollars} of staked BTC.
As of Aug. 7, 2025, BOB’s whole worth locked is $212 million, DeFi TVL is $132.2 million, with 553,000 customers.
Associated: Construct on Bitcoin provides ZK-proofs in improve towards decentralization
Native Bitcoin DeFi is on the way in which
Beforehand, Bitcoin DeFi largely relied on centralized establishments or wrapped Bitcoin tokens similar to wBTC (wBTC), tBTC (TBTC) and Huobi BTC (HBTC). These so-called “Bitcoin” tokens have been representations of actual BTC, the place customers deposited their real BTC with a centralised or multisignature custodian in alternate for a tokenised model that might be used onchain.
Whereas all BTC bridges have traditionally relied on multisignature custody, BOB’s BitVM2 permits customers to work together with DeFi functions utilizing their native BTC straight—no custody, no wrapping required.
BitVM2 is the most recent BitVM design, co-authored by BOB co-founder Alexei Zamyatin. It permits sensible fraud proofs on Bitcoin, which permits customers to implement trust-minimized bridging between the Bitcoin L1 and BOB.
By leveraging this expertise, BOB goals to carry Bitcoin nearer to Ethereum-style decentralized finance, permitting Bitcoin customers to interact in DeFi with out dropping management of their belongings. The community goals to protect Bitcoin’s safety whereas enabling interplay with Ethereum-based DeFi protocols.
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