A hundred schools of thought contend: A comprehensive review of BTC L2 30+ projects

Chainway is the ZK sovereignty rollup of BTC. It not only uses Bitcoin to publish the data layer, but also uses BTC data as the source to generate ZK certificates. The prover needs Scan every BTC block without missing a beat.

QED Protocol - @QEDProtocol

QED Protocol is a ZK rollup based on zkevm on BTC, which only creates ZK proof for rollup to BTC L1 withdrawal transactions . Similar to BitVM, verification costs are higher.

ROLLUX - @RolluxL2

Founded in 2023 and developed by Syscoin (SYS), Rollux is an Optimistic rollup that combines the Bitcoin mining network and Syscoin Layer1 data availability security.

Hacash.com - @HacashCom

Hacash.com was founded in 2022 and proposes a comprehensive solution for multi-layer expansion to achieve one-way Bitcoin Transfer and realize ecological expansion through Layer2 and Layer3.

U Protocol - @u_protocol

U Protocol is a decentralized full-chain BitcoinFi protocol that provides uBTC and U Bitcoin Thunder Network to enhance the role of Bitcoin in the region Practicality in the blockchain ecosystem.

LumiBit - @LumiBitL2

LumiBit is a ZK-EVM-based Bitcoin Layer 2 solution that provides enhanced scalability, privacy and decentralization ization, with universal circuit design and efficient transaction verification.

Sidechain

BEVM - @BTClayer2

Use Taproot multisim for threshold signature to improve the fault tolerance of BTC cross-chain transactions< /p>

MAP Protocol - @MapProtocol

Adopts the Posconsensus mechanism to enhance security by uploading checkpoint data to BTC layer 1

Merlin Protocol - @ProtocolMerlin

Adopts the Posconsensus mechanism to enhance security by uploading checkpoint data to BTC layer 1

ckBTC - @dfinity

Cross-chain integration of BTC within ICP via a pure crypto solution independent of any third-party bridge or client

Libre - @ libreblockchain

Founded in 2022, Libre is a Bitcoin L2 sidechain dedicated to scaling the performance of Bitcoin by increasing its speed and usability.

Rootstock - @rootstock_io

Rootstock is an EVM-compatible smart contract platform based on Bitcoin that extends Bitcoin functionality through RIF solutions and supports permissionless DeFi protocol construction.

Stacks - @Stacks

Stacks is an old project founded in 2013, aiming to bring smart contracts and decentralized applications to Bitcoin .

Liquid Network - @Liquid_BTC

Bitcoin’s second layer solution for fast, confidential settlement and digital asset issuance.

Babylon - @babylon_chain

Provides Bitcoin staking and timestamping services to help other blockchains share BTCS security through BTC staking for PoS chains Provide economic security.

Drivechain - @LayerTwoLabs

LayerTwo Labs plans to introduce innovative Drivechains sidechain solutions on the Bitcoin network to enhance user experience and enable Bitcoin users to Get innovative features from other networks.

SatoshiVM - @satoshivm

A BTC-based ZK Rollup that adds two time locks to its fraud prevention, which is very important for determining the ZK proof. Correctness and validity pose challenges

BitBolt - @BitBolt_Labs

Focused on the payments and Ordinals ecosystem, using technologies such as account abstraction and threshold ECDSA, Enable fast, low fees and smart contracts. The Thunder test network has been launched.

State Channel

Lightning Network

Lightning Network is Bitcoin’s peer-to-peer payment network, which enables instant and low-cost settlement through payment channels. , payments can be made to any participant without trust.

OmniBOLT - @omni_bolt

OmniBOLT is a stable currency circulation specification that supports the Lightning Network. It is an important protocol of the Omni Foundation and especially supports Omni-USDT.

Client-side verification

BiHelix - @BiHelix_

BiHelix is ​​based on the Bitcoin native blockchain, combining the RGB protocol and Lightning The ecological infrastructure of the network is designed to improve usage scenarios and solve scalability challenges.

Bool Network - @bool_official

Bool Network is a secure, decentralized Bitcoin verification layer that allows developers to easily build fast, stable, and reliable Extended Bitcoin second-layer blockchain.

Path Protocol - @PATH_Protocol

DePin/PoW+Lightning Network Compatibility+Turing Complete Smart Contract+Super Ecological Node+UTXO

Other

Botanix - @BotanixLabs

Botanix is ​​a fully decentralized Bitcoin layer 2 EVM that combines Bitcoin security with decentralization and The ease of use and versatility of EVM.

AiPTP - @aiptpcom

AIPTP was established in 2023. It is a decentralized AI network based on the blockchain, building a dual L2 network to support training and Bitcoin L2 for inference models.

Dovi - @Dovi_L2

Dovi was established in 2023. It is a smart contract platform compatible with Bitcoin Layer 2 and EVM. It adopts Schnorr signature and MAST structure to improve Privacy and cross-chain asset transfer.

Bitfinity Network - @bitfinitynet

Bitfinity is the next generation of lightning-fast Bitcoin-based EVM backed by Polychain Capital and ParaFi Capital.