Blockchain v3.0

Alephium is the first live layer 1 sharded blockchain scaling and improving on Bitcoin core technologies, Proof of Work and UTXO. It delivers a highly performant, secure DeFi & dApps platform with enhanced energy efficiency.

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Engage with us.

Mine

Start mining to contribute to the network security and receive ALPH rewards.

Documentation

Contribute

Start testing and report issues or contribute to the Alephium codebase.

Codebase

Build

Start building your own smart contracts, decentralized apps and protocols.

Guide

Technology

What makes Alephium different?

Blockflow: sharding on BTC's proven foundations

Alephium is built on the BlockFlow algorithm which delivers efficient and practical UTXO sharding. Inspired by distributed computing models, it combines DAG (Directed Acyclic Graph) and sharding. Being much more lightweight than other sharding methods, BlockFlow also natively supports single-step cross shard transactions, making the Alephium UX as smooth as any single chain platform.

BlockFlow combines DAG and sharding to enable an efficient, secure and verifiable consensus algorithm.

More details White paper

Proof of Less Work (PoLW)

PoLW uses a clever combination of physical work and token economics to dynamically adjust the work required to mine new blocks, ensuring a reduced energy footprint compared to classic Nakamoto PoW mining.

Blockchain's success ultimately depends on its sustainability.

More details PoLW white paper

Smart contract design

Alephium's smart contracts have been designed and implemented to be scalable, functional, practical with a focus on security and reduced state usage. Its stateful UTXO model combines the advantages of the UTXO model and the account model.

A new programming paradigm for smart contracts and dApps.

More details Guide

Novel VM design

Alephium uses a simple, safe and flexible virtual machine designed for dApps, and more specifically DeFi. Its dedicated VM leverages and improves on the UTXO model to address DeFi’s security issues and execution bottleneck. Our VM focuses on contract security and IO performance. The key features are its first-class token system, multiple-caller contract and fine-grained execution model.

VMs can be a big bottleneck when it comes to Blockchain performances. Not on Alephium.

More details

Some numbers

We're passionate and committed to outstanding quality in everything we do. We took the necessary time to transform theory into actual technologies.

shards running on mainnet.

100MB

RAM needed for a Raspberry-Pi based full node.

>3 years

of Research & Development.

Usability

Designed for humans

Our wallet is only the first step. The intricate and innovative parts of technology should be at reach, without becoming an obstacle to accessibility and usability. Alephium aims at placing the user at the center, regardless of their skills.

Get the wallet

Start now

Build and contribute

Alephium is already live. You can start building, earning, and contributing right now.

Start mining

Earn ALPH tokens

Mining is crucial to secure and verify transactions on the Alephium blockchain. Contribute to the growth and security of our network and receive ALPH block rewards. Currently, we support CPU and GPU mining and will soon offer FPGA mining support

Instructions

Build your own

Start building your own smart contracts, decentralized apps and protocols. Alephium is made to build powerful, secure, and scalable dApps. Its stateful UTXO model combines the advantages of both the UTXO model and account model.

Codebase

Work @ Alephium

Our team & community members are our biggest assets. With them, with you, we plan to make Alephium the preferred blockchain for powerful, accessible and secure dApps & web 3.0. If you think you're uniquely suited to support Alephium, we want to hear from you. We're based in beautiful Switzerland, but you can contribute from anywhere in the world.

Job openings

Contribute to the code

Alephium is open source!

Start testing and report issues or contribute to the Alephium codebase. We would love to see your contribution integrated into the Alephium codebase!

To the codebase

Join the community

Alephium's community is growing fast. Fascinated by our technology? Come learn and build with us!