B2 Network at a glance.
B2 Network, also styled BSquared, launched its mainnet in April 2024 as a Bitcoin Layer 2 that runs a zkEVM rollup, stays EVM compatible, and uses BTC to pay gas. Here is how it works and what it is used for, not the price.
$2.3M
Value locked in DeFi protocols on B2 Network. Updated Jun 8, 2026. Source: DefiLlama.
B2
Used for fees and securing the network. See the live B2 price.
How B2 Network works.
B2 Network executes transactions in an EVM-compatible environment off the Bitcoin base layer and uses zero-knowledge proofs to verify batches of transactions. The design commits proof data toward Bitcoin and combines ZK proofs with a challenge process so the rolled-up state can be checked. Batching transactions into proofs keeps per-transaction costs lower than transacting directly on Bitcoin.
B2 Network executes transactions in an EVM-compatible environment off the Bitcoin base layer and uses zero-knowledge proofs to verify batches of transactions. The design commits proof data toward Bitcoin and combines ZK proofs with a challenge process so the rolled-up state can be checked. Batching transactions into proofs keeps per-transaction costs lower than transacting directly on Bitcoin.
Bitcoin Layer 2
B2 Network runs an execution layer above Bitcoin and commits zero-knowledge proof data toward the Bitcoin base layer.
zkEVM rollup
The network uses a zkEVM rollup, so it can run EVM contracts while verifying batches of transactions with zero-knowledge proofs.
BTC as gas
Transaction fees on B2 Network are paid in BTC. The B2 token is used for utility and protocol roles within the ecosystem.
Proof and challenge model
B2 pairs zero-knowledge proofs with a challenge process so that committed Layer 2 state can be checked against the data settled toward Bitcoin.
What B2 Network is used for.
The network hosts EVM-compatible applications that connect Bitcoin liquidity with familiar tooling.
DeFi on Bitcoin
Decentralized finance applications run on B2 Network while settling activity toward Bitcoin.
EVM contract deployment
Developers can deploy EVM contracts using existing Ethereum tooling because the network is EVM compatible.
Lower-cost transactions
Batching transactions into zero-knowledge proofs lets users transact at lower fees than using the Bitcoin base layer directly.
UniRouter · Bridge$210.0M
Buzz Farming · Farm$202.6M
Echo Bridge · Bridge$127.2M
River Omni-CDP · CeDeFi$15.6M
GlowSwap · Dexs$2.1MHold, swap and spend B2.
B2 Network is integrated in Zypto App. Hold B2 in self-custody, swap it to any supported asset, and use it across Zypto’s features.
Be the reason B2 Network ships next.
B2 Network isn’t in Zypto App yet. Post the request to your followers, chains with the most demand get prioritised.
Request on XCommon questions.
Is B2 Network a Layer 1 or Layer 2?
What token pays for gas on B2 Network?
Is B2 Network EVM compatible?
When did B2 Network launch?
Can I hold B2 in Zypto App?
Related networks.
From learning to doing.
Hold, swap and spend crypto across 20+ blockchains in one self-custodial app, with a real Visa card for the real world.
Self-custodial · your keys, your coins.
