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Layer 2 blockchain · settles to Polkadot

Astar ticker ASTR

  • No public-data lookups yet
  • 5 reviewed developments
  • 40 cited sources

Summary

Astar is a Polkadot parachain. Collators run the Astar node, gather transactions and author blocks in slot-based Aura; relay-chain validators assigned to Astar's core check each block against its proof of validity, and GRANDPA finalizes the relay chain that includes it. Asynchronous backing, activated in June 2025, cut the block interval to about 6 seconds. Astar reserves relay-chain validation as coretime in 28-day periods. EVM contracts are the live contract environment; Wasm (ink!) contracts were frozen in June 2026 and have been blocked since runtime 2400 was enacted on 2026-09-19. ASTR holders lock tokens for dApp staking, which directs part of issuance to registered projects and does not choose block producers. 34192026272829

Design

System
Layer 2 blockchainAstar Network is a Polkadot parachain (para ID 2006). Its collators build blocks, but relay-chain validators check each block against its proof of validity, keep it available and finalize it with GRANDPA, so validity, data availability and finality come from Polkadot; it is filed as a layer 2 that settles there. Astar's guides call it Astar L1 and it posts no proofs to a contract, so the class is contested. Astar zkEVM, a validium on Ethereum retired on 2025-03-31, and Soneium, an Ethereum layer 2, are separate chains.
Settles to
PolkadotRelay-chain validators assigned to Astar's core check each Astar block against its proof of validity, spread erasure-coded pieces so it stays available, and randomly selected approval checkers re-check it; GRANDPA then finalizes the relay-chain block that includes it. Astar has no finality of its own. Since August 2025 it reserves this validation as Polkadot coretime in 28-day periods, renewed automatically under a referendum and paid from DOT reserves managed by the Astar Finance Committee.
Settlement family
Its own design
Scarce resource
Other
State model
Accounts
Finality
Economic finality
Who makes blocks
Collators take Aura slots in turn. Since runtime 1900 (enacted 2025-10-29) a new candidate bonds 3,200,000 ASTR and needs approval from two thirds of the Main Council or a referendum; governance also grants bond-free invulnerable slots to infrastructure partners. A collator that stops producing blocks leaves the active set and loses 1% of its bond. Runtime 2300 (enacted 2026-08-12) lowered the minimum candidate count from 5 to 1. Astar says collators do not secure the chain; their main power is censorship. The active collator count was not verified.
Fork choice
No open weight-based chain selection of Astar's own. Astar follows the parachain blocks that relay-chain validators back and include, and GRANDPA finalizes relay-chain blocks once more than two thirds of validators vote for them, carrying Astar's included blocks with them. Under asynchronous backing collators build on blocks not yet included, and Astar's collator guide warns of branch churn and reorg-heavy periods, so blocks that are not yet final can be replaced.

Qualifications

Tradeoffs

This view follows one way of thinking about design priorities, often called the blockchain trilemma. The design-priorities lesson sets out the counter-view. Read the design-priorities lesson.

Emphasizes
Security and Scalability
Gives up
Independence and open block production. Validity, data availability and finality come from Polkadot's validators, and Astar must keep buying coretime to produce blocks. Block producers are a governance-approved set: candidates need a 3,200,000 ASTR bond and council or referendum approval, invulnerable slots are granted by governance, and the minimum candidate count is now 1. Governance bodies whose first members were Astar Foundation leaders and runtime developers can fast-track or cancel proposals and put the whole chain into safe mode.The emphasis follows Astar's docs: security from Polkadot's shared validator set, and capacity from asynchronous backing, which Astar says halved the block interval and raised throughput. No throughput figure was verified. How many independent collators run today was not verified.
Full node at home
Demanding 45Astar's archive-node guide lists 8 cores, 16 GB of RAM and a 500 GB SSD (NVMe preferred) for Astar, and says a pruned full node keeps only recent blocks and uses much less storage. The node runs in parachain mode with an embedded Polkadot relay-chain node on its own ports, whose storage the guide does not state. Collators need bare-metal machines with 12 dedicated cores at 4 GHz or more, 32 GB of RAM, a 1 TB NVMe SSD and 500 Mbit/s symmetric bandwidth, plus governance approval.
Throughput claims
No classified figure recorded

Scaling layers

No scaling layer recorded in this profile.

Capabilities

Capabilities of Astar: how each one is provided, or its research status
CapabilityHow it is providedNotes and sources
Account abstractionStructured assessment pendingNot yet assessed for any chain.
Atomic swapsUnknownNo hash-time-locked or other trust-minimized swap mechanism was documented for Astar. EVM contracts could host one, but none was reviewed.
Authenticated data publicationUnknownNot yet assessed under this row's current definition.
Light clientsBuilt into the protocolLimited scopePolkadot consensus produces the GRANDPA finality proofs and the relay-chain record of included Astar blocks that a light client checks. Astar's docs show the smoldot client, through Substrate Connect, following Astar from its chain specification without a trusted RPC node, and Polkadot's docs describe these clients checking finality proofs and Merkle state proofs. Scope is limited: the path serves native queries, the reviewed docs show no light-client path for the EVM JSON-RPC that wallets use, the Astar page is an older tutorial, and wallet adoption was not reviewed. 72930
Native staking or delegationStructured assessment pendingNot yet assessed for any chain.
On-chain governanceStructured assessment pendingNot yet assessed for any chain.
Parallel executionStructured assessment pendingNot yet assessed for any chain.
Payment or state channelsUnknownNo payment or state channel layer anchored to Astar was found; absence was not verified.
Programmable spendingNative (protocol or core-team software) Earlier definitionEVM smart contracts (pallet-evm through Frontier, chain ID 592) run on mainnet, and native accounts can use multisig and proxy rules. Wasm (ink!) contracts were frozen on 2026-06-15 and all calls to them have been blocked since 2026-09-19. 1611122528
Protocol-verified messagingStructured assessment pendingNot yet assessed for any chain.
Reversible transfers or recoveryBuilt into the protocolLimited scopeTime-delayed proxies in the proxy pallet: a proxy announces a call that can run only after a set number of blocks, and the controlling account can reject it during that delay, so a delayed transfer can be cancelled. Scope is limited to part (a): the protocol does not reverse a completed transfer, and no recovery path set up in advance was found in Astar's docs. 11
RollupsNone found Earlier definitionNo rollup anchors to Astar. Astar zkEVM was a validium that settled to Ethereum, not to Astar, and was retired on 2025-03-31; Soneium is a layer 2 on Ethereum. 142324
Shielded transfersStructured assessment pendingNot yet assessed for any chain.
Signed partial offersUnknownNot yet assessed under this row's current definition.
Reading these values
How this feature is provided
Built into the protocol, core-team software or independent software says where a feature lives and who can change it. These are implementation layers, not quality: core-team software is not closer to the protocol than independent software.
Structured assessment pending
The shared review has not assessed this feature for any chain yet (Account abstraction, Native staking or delegation, On-chain governance, Parallel execution, Protocol-verified messaging and Shielded transfers). That does not mean it is absent, and a chain’s profile may already describe it.
Unknown
The review has not established this for this chain under the current definition; the note beside it says why. Unknown is not absent and not a low score. A feature reads “Not present” only when a source shows it is absent.
Earlier definition
Payment or state channels, Programmable spending and Rollups keep the earlier definition until the next fact-check. There, “Native” does not separate the protocol from core-team software, “Ecosystem software” does not say who publishes it, and “Partial” does not say which layer.
Reading across rows
The list of capabilities is incomplete. Do not read these rows as a chain leading or lagging overall.

Definitions, schema version and review history

Ecosystem & custody

Ecosystem products for Astar
Product typeStatusNotes and sources
Automated market makersThinCometSwap, ArthSwapAstar's guide to buying ASTR now points to CometSwap, a concentrated-liquidity exchange on Astar EVM that DeFiLlama has listed since February 2026; ArthSwap, listed by DeFiLlama on Astar since 2022, is also present. Operators, audits and liquidity depth were not reviewed, and DeFiLlama lists no audits for CometSwap. 1631 As of Sep 29, 2026.
Issuer-native stablecoinsNone foundNeither Circle's USDC list nor Tether's supported-protocol list includes Astar. USDT reaches Astar from Polkadot's Asset Hub over XCM as xcUSDT, and since July 2026 a bridged USDC, deployed by Swapper under Circle's bridged-USDC standard over Chainlink CCIP, is the route Astar presents as replacing older Celer-bridged USDC; Astar's own post says this bridged USDC is not issued by Circle. 13223233 As of Sep 29, 2026.
Algorithmic stablecoinsUnknownNo algorithmic stablecoin with material use was reviewed. DeFiLlama lists AstridDAO on Astar, which describes its BAI as a stablecoin borrowed against collateral, so it is not counted here. 31 As of Sep 29, 2026.
BridgesEstablished in the ecosystemChainlink CCIP (ASTR to Soneium), Swapper bridged USDC (over CCIP), Wanchain XFlows (USDT), Celer cBridge (older route), XCM transfers with Polkadot chainsThe Astar Portal bridges ASTR from Astar EVM to Soneium through Chainlink CCIP: a lock-and-release token pool on Astar and a burn-and-mint ASTR contract on Soneium whose roles are granted by the Astar Foundation. Transfers with the relay chain and other parachains use XCM under Polkadot's shared validation, which is not a bridge. Astar's docs also describe Wanchain's USDT route, and Celer cBridge carried older USDC; whether Celer still serves Astar was not checked. Risk: CCIP transfers trust Chainlink's CCIP network and the Astar Foundation's control of the upgradeable ASTR contract and token-pool roles on Soneium; Swapper's bridged USDC adds Swapper's contract; Wanchain and Celer routes trust their own validator or relayer sets, which were not reviewed. A bridged asset is only as sound as the bridge that minted it. 213152122 As of Sep 29, 2026.
Block explorersEstablished in the ecosystemSubscan, BlockscoutAstar's docs list Subscan, which covers native and EVM activity, and Blockscout for the EVM side. Their operators were not verified; explorer data is provider-indexed, and this listing is not a completeness check. 817 As of Sep 29, 2026.
Hardware walletsThinLedger (EVM network behind a switch; MetaMask and Polkadot wallet paths), Trezor (through MetaMask or Rabby)See custody rows: Ledger Wallet defines an Astar EVM network behind a feature switch that is off by default, and Astar documents Ledger signing through MetaMask and through Polkadot wallets; Trezor's Astar page lists MetaMask and Rabby, and Trezor Suite has no Astar network. 17183435383940 As of Sep 29, 2026.

Hardware-wallet custody

Hardware-wallet custody for Astar
Device makerStatusWhat users can and cannot do
LedgerPartialSame as native: UnknownCan: Sign Astar EVM transactions with the Ledger Ethereum app through MetaMask, per Astar's Ledger guide
Can: Sign native Astar transactions, including dApp staking in the Astar Portal, with the Ledger Polkadot generic app through Polkadot.js, Talisman, SubWallet or Nova Wallet, per Astar's guide
Cannot: Create or manage native Astar accounts in Ledger Wallet: Astar's guide says Ledger Live is not supported for them
Cannot: Count on Ledger Wallet showing the Astar EVM network: Ledger's code defines it (chain ID 592) behind a feature switch that is off by defaultCounted as limited vendor support under the shared custody rule: Ledger's published currency list (13.56.0) has an Astar EVM network that uses the Ethereum app, but Ledger Wallet shows it only when its feature switch is on, the switch is off by default in code, Ledger's remote setting could not be read, and Ledger's Astar coin page returned 404. The working paths Astar documents run through MetaMask and Polkadot wallets. 171834353637 As of Sep 29, 2026.
TrezorThrough an intermediaryMetaMask or RabbySame as native: UnknownCan: Use a Trezor with the Astar network through MetaMask or Rabby, which Trezor's Astar page lists
Can: Hold ASTR on Ethereum in Trezor Suite, which Trezor's page lists as a supported network; that is the token on Ethereum, not the Astar network
Cannot: Manage the Astar network in Trezor Suite: neither Suite's Ethereum-family network module nor its legacy network list has an Astar network (chain ID 592)
Cannot: Sign native (Substrate-format) Astar transactions: no Trezor path for them was found in Astar's or Trezor's pagesTrezor's Astar page lists Trezor Suite, MetaMask and Rabby and the Ethereum and Astar networks without mapping them. Suite's Ethereum-family network module and its legacy network list have no Astar network, so under the custody evidence rule the device reaches the Astar network only through the third-party apps. 383940 As of Sep 29, 2026.

Public data

iKnow Blockchain has no public-data lookups for Astar yet. This is a limit of the service, not a statement about the network.

Public-data lookups for Astar
LookupStatusWhat it covers and its limits
Address or accountNot available yetPublic-data lookups for this chain are not built yet.
Tokens and assetsNot available yetPublic-data lookups for this chain are not built yet.
NFTsNot available yetPublic-data lookups for this chain are not built yet.
TransactionsNot available yetPublic-data lookups for this chain are not built yet.

A lookup covers one address or transaction from one provider. It is never a complete wallet, and an error or private value is reported as unknown, not zero. About public data · Connect your AI

Sourced developments

Developments: Reviewed Sep 29, 2026 Next review due Oct 9, 2026, 12:00 UTC.

Publication date · newest first

Topics your AI can explain

Your AI can explain these topics for Astar through the connection, with sources.

Known gaps

What this profile's review did not establish:

Sources

Oldest dated source check: Source checked Sep 29, 2026 Next check due Oct 29, 2026.

All 40 sources were checked in the last 30 days.

  1. Smart Contracts (external site)Astar Docs · retrieved
  2. Astar Parachain (architecture overview) (external site)Astar Docs · retrieved
  3. Learn about Collators (external site)Astar Docs · retrieved
  4. Collator Requirements (external site)Astar Docs · retrieved
  5. Archive Node (external site)Astar Docs · retrieved
  6. Network RPC endpoints (external site)Astar Docs · retrieved
  7. Light Client node with no RPC (external site)Astar Docs · retrieved
  8. Block explorers (external site)Astar Docs · retrieved
  9. Tokenomics 3.0 FAQs (external site)Astar Docs · retrieved
  10. Governance overview (external site)Astar Docs · retrieved
  11. Proxy accounts (external site)Astar Docs · retrieved
  12. Accounts (external site)Astar Docs · retrieved
  13. Wanchain Bridge (USDT XFlows and xcUSDT) (external site)Astar Docs · retrieved
  14. Interact with Soneium (external site)Astar Docs · retrieved
  15. Transfer from Astar to Soneium (external site)Astar Docs · retrieved
  16. Buying ASTR on a DEX using CometSwap (external site)Astar Docs · retrieved
  17. Interact with Ledger on Astar EVM using MetaMask (external site)Astar Docs · retrieved
  18. Interact with Ledger using Astar Native Accounts (external site)Astar Docs · retrieved
  19. Astar Activates Asynchronous Backing on Mainnet (2025-06-17) (external site)Astar blog · retrieved
  20. Astar Transitions to Agile Coretime Model (2025-08-13) (external site)Astar blog · retrieved
  21. Implementation of ASTR on Soneium with Chainlink CCIP & ERC-7802 compatibility (2025-06-11) (external site)Astar blog · retrieved
  22. Bridged USDC Is Now Live on Astar via the Swapper Stablecoin Payment Layer (2026-07-02) (external site)Astar blog · retrieved
  23. Astar Evolution: Phase 1 (transition of Astar zkEVM to Soneium, 2024-08-23) (external site)Astar blog · retrieved
  24. Astar zkEVM (archived project page) (external site)L2BEAT · retrieved
  25. WASM smart-contract sunset on Astar and Shiden (2026-06-12, updated 2026-08-19) (external site)Astar Forum · retrieved
  26. Referendum 44: Astar Runtime 1900 Upgrade (Asset Hub migration prep, tokenomics decay, governance-approved collator selection) (external site)Subsquare (Astar democracy) · retrieved
  27. Referendum 60: Runtime upgrade to 2300 (Polkadot SDK stable2512; collator minimum lowered to 1) (external site)Subsquare (Astar democracy) · retrieved
  28. Referendum 63: Runtime upgrade to 2400 (WASM smart-contract decommission, step 1 of 2) (external site)Subsquare (Astar democracy) · retrieved
  29. Parachains' Protocol Overview (external site)Polkadot Wiki · retrieved
  30. Light Clients (external site)Polkadot Docs · retrieved
  31. DeFiLlama protocols API (Astar entries: CometSwap, ArthSwap, AstridDAO, CCIP) (external site)DeFiLlama · retrieved
  32. USDC contract addresses (external site)Circle · retrieved
  33. Supported protocols (external site)Tether · retrieved
  34. @ledgerhq/cryptoassets 13.56.0 currency list (Astar entry) (external site)Ledger (npm package via jsDelivr) · retrieved
  35. currencyAstar feature flag definition (ledger-live, develop branch) (external site)Ledger (LedgerHQ GitHub organisation) · retrieved
  36. Feature flag defaults (flags are disabled unless set; ledger-live, develop branch) (external site)Ledger (LedgerHQ GitHub organisation) · retrieved
  37. Currencies hidden behind feature switches (ledger-live, develop branch) (external site)Ledger (LedgerHQ GitHub organisation) · retrieved
  38. Astar wallet (external site)Trezor · retrieved
  39. Trezor Suite network configuration (trezor-suite, develop branch) (external site)Trezor (trezor GitHub organisation) · retrieved
  40. Trezor Suite Ethereum-family network module configuration (trezor-suite, develop branch) (external site)Trezor (trezor GitHub organisation) · retrieved

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Funding disclosure

Funding disclosures appear here when an upkeep arrangement exists, in the form “Upkeep funded by [name]; verdicts unaffected.” The funder ledger has not been published yet. Neutrality & funding