Astar

About Astar (ASTR)

What Is Astar (ASTR)?

Astar is a smart contract platform running as a parachain in the Polkadot ecosystem, supporting both EVM and WebAssembly (WASM) contracts on the same chain. Its defining feature is dApp Staking, a protocol mechanism that routes a share of block inflation to registered applications and the token holders who back them. ASTR is the native asset, used for transaction fees, staking and governance. The project now describes itself as a web3 collective anchored by Astar Network, with activity spanning Polkadot, Ethereum and Soneium.

Official resources:

• Website: https://astar.network/
• Documentation: https://docs.astar.network/
• Astar Portal: https://portal.astar.network/
• Source code: https://github.com/AstarNetwork/Astar
• Block explorer: https://astar.subscan.io
• X account: https://x.com/AstarNetwork

Who Founded Astar? (History)

Astar was started by Sota Watanabe and the team at Stake Technologies. It began in 2019 as Plasm Network, originally a layer 2 scaling effort, and was rebranded to Astar in 2021 as its scope widened to a general smart contract hub. Astar secured a slot in Polkadot's first round of parachain auctions and launched mainnet on 17 January 2022. Watanabe later founded Startale, which with Sony Group formed Sony Block Solutions Labs, the joint venture behind the Soneium layer 2. Astar has since expanded onto Soneium, where ASTR is used as an ecosystem asset.

How Astar Works

Astar is built with Substrate and operates as a Polkadot parachain. Collators order transactions and produce candidate blocks, while finality comes from the Polkadot relay chain validator set, so Astar does not maintain an independent validator set of its own.

Two contract environments sit on top: an EVM environment accepting standard Solidity and Ethereum tooling, and a WASM environment for Rust contracts compiled to WebAssembly. The economic layer is where Astar diverges most, because a defined portion of every block's inflation is set aside for dApp Staking rather than paid entirely to block producers.

Key Ecosystem Components

• Astar Network: the parachain providing settlement, governance and the shared economic framework.
• dApp Staking: the protocol that distributes inflation to registered applications and their stakers.
• Astar Portal: the interface for staking, governance voting and asset management.
• Astar Stack: the product framework, including AstarFi (described as in development) and Astar Guard (described as upcoming).
• Shiden (SDN) and Shibuya (SBY): the Kusama sister network and the public testnet.
• Soneium: the Sony Block Solutions Labs layer 2 where ASTR is used as an ecosystem asset.

ASTR Token Utility

ASTR has 18 decimals and an initial genesis supply of 7,000,000,000 units. Documented uses are transaction fees, where part of each fee is burned and part paid to the collator; dApp Staking, with a 500 ASTR minimum on Astar Network and a 9 era unlocking period of roughly nine days; and governance voting on referenda covering parameters and treasury spending.

dApp Staking runs on eras of about 24 hours (14,400 blocks). A period lasts roughly a year, split into a Voting subperiod of about one day where stakers pick applications and no rewards accrue, then a Build and Earn subperiod of about 364 days where rewards are paid. Applications are ranked into tiers by total stake behind them.

Tokenomics 3.0 was activated in March 2026 through two on-chain governance referenda. It lowered maximum yearly inflation from 7 percent to 5.5 percent, made per-block emission decay slightly each block so total supply converges toward roughly 10 billion ASTR rather than growing uncapped, and cut the number of reward-eligible applications per era to at most 16.

What Makes Astar Unique?

dApp Staking is a first-class protocol mechanism rather than a grants program. Most chains fund builders through foundations, treasuries or one-off campaigns. Astar routes a defined share of new issuance to applications continuously, with allocation decided by how much stake the community places behind each project, giving builders a recurring and visible on-chain revenue line. The dual EVM and WASM environment is a second differentiator, and the direct link to Sony Block Solutions Labs through Watanabe's role at Startale is a third.

How Astar Differs from Similar Projects

Against Moonbeam, the other well known EVM parachain, Astar has put more weight on WASM contracts and on the staking-driven builder subsidy. Against Acala, which centers on DeFi primitives and a stablecoin, Astar is a general purpose execution environment. Against standalone layer 1 chains, Astar does not run its own validator set, which lowers the cost of bootstrapping security but ties the network to Polkadot's parachain economics. Against Ethereum rollups, Astar settles inside Polkadot, though the Soneium expansion adds an Ethereum-settled surface.

Use Cases of Astar

• Deploying Solidity applications with access to Polkadot ecosystem liquidity and users.
• Deploying Rust and WASM contracts in a non-EVM execution environment.
• Application funding, where a registered dApp earns a share of inflation proportional to community backing.
• Staking to earn rewards while directing subsidy toward projects you use.
• Governance participation in referenda on parameters and treasury allocation.

How Astar Is Secured

Astar relies on Polkadot's shared security model. Collators produce blocks but do not provide economic finality on their own; relay chain validators verify and finalize parachain blocks, so an attacker would need to attack Polkadot rather than only Astar's collator set. Anyone can run a permissionless node and become a collator, and the client is open source on GitHub. The ERC-20 representation of ASTR on Ethereum is a separate contract and carries bridged-token risk distinct from the native chain.

Risks and Considerations

• Parachain dependency: security and continuity depend on Astar's position in the Polkadot parachain system and on Polkadot's own roadmap.
• Repeated tokenomics changes: the emission model has been rewritten more than once, and Tokenomics 3.0 cut reward-eligible applications per era to at most 16, materially changing outcomes for builders who relied on the wider distribution.
• Inflation: rewards come from new issuance rather than fee revenue.
• Strategic dispersion: the project spans Astar Network, Soneium, Ethereum and Polkadot, which splits attention and liquidity. Confirm which chain a given product runs on.
• Product status: several Astar Stack items are described by the project as in development or upcoming.
• Bridged representations: holding ASTR as an ERC-20 is not the same as holding native ASTR.

Why Astar Matters

Astar is one of the longer running attempts to make application funding a protocol feature instead of a discretionary grant process. The recent tightening of reward eligibility is a visible test of whether concentrating subsidy on fewer projects works better than spreading it thin. Its working relationship with Sony Block Solutions Labs through Startale also makes it one of the few networks tied directly to a major consumer technology group.

Where Can You Buy Astar (ASTR)?

ASTR trades on centralized exchanges and decentralized venues. It exists natively on Astar Network and as an ERC-20 representation on Ethereum, so confirm which form a venue supports and which network a withdrawal uses. Sending native ASTR to an Ethereum address, or the reverse, can result in permanent loss.

Storage Options After Purchase

Native ASTR is held in Polkadot ecosystem wallets that support Substrate accounts and managed through the Astar Portal for staking and governance. The ERC-20 representation can be held in any standard Ethereum wallet. Hardware wallets are safer for long-term holdings, and self-custody is required to take part in dApp Staking or governance directly.

Related Coins

• Polkadot (DOT)
• Moonbeam (GLMR)
• Acala Token (ACA)
• Kusama (KSM)