ASTAR NETWORK · L1 · QRI 15 · BAND 2 Acknowledged Hybrid FAIL · Stage 0 · Washing 1x

Astar is a Polkadot parachain, which means its quantum readiness is whatever Polkadot's relay chain decides, and Polkadot has not decided. Substrate's forkless upgrade machinery is genuinely useful, but only if someone builds a post-quantum pallet to push through it. Right now nobody has.

inLinkedIn XPost ▼Scorecard JSON ⇆Compare Verified 2026-04-18

Summary

Astar is a Polkadot parachain inheriting relay-chain security. Uses Sr25519 (Ristretto25519) with ECDSA secp256k1 for EVM compat. Substrate forkless upgrades give coordination capability but no PQC work shipped. Dependent on Polkadot relay chain PQC roadmap.

What the gates say

Hybrid: FAIL. No hybrid plan on file.
Evidence: PASS. Sources reconstructable by third party.
Primitive naming: PASS. Named primitives at every scored sub-level.

Burn-vs-rescue policy on file

undeclared (depends on Polkadot relay chain policy)

Seven dimensions

Each dimension scores 0-100 internally; the weighted roll-up produces the QRI on the left. Open a row to read the sub-score detail.

1 Cryptographic Exposure 25 / 100

1a_primitive_inventory 9 / 20

Substrate + Polkadot primitives.

Primitives: Sr25519 (Schnorr over Ristretto25519) · ECDSA secp256k1 (EVM compatibility) · BLS12-381 (Polkadot relay chain) · BLAKE2b-256

Evidence: docs.astar.network

1b_shor_grover_pq_tag 10 / 20

Evidence: docs.astar.network

1c_algorithm_family_diversity 0 / 20

No PQC families

1d_nist_security_category 0 / 20

No NIST PQC primitives

1e_implementation_quality 6 / 20

Evidence: github.com

2 HNDL Exposure 18 / 100

2a_active_key_exposure 4 / 20

Substrate SS58 addresses; pubkeys visible.

2b_cold_key_exposure 5 / 20

Parachain since 2022; moderate history.

2c_signature_longterm_validity 4 / 20

Sr25519 and BLS12-381 forgeable post-Shor.

2d_encryption_confidentiality 5 / 20

Polkadot libp2p uses Noise+x25519 — Shor-vulnerable.

3 Metadata & Privacy Exposure 22 / 100

3a_tx_graph_visibility 5 / 20

Pseudonymous transparent ledger.

3b_rpc_mempool_concentration 6 / 20

OnFinality, Dwellir, Astar-official RPC. Moderate diversity.

3c_cross_chain_bridge_correlation 6 / 20

XCM (Polkadot native), LayerZero integration.

3d_retroactive_deanon_risk 5 / 20

No shielded layer. Sr25519 Shor-broken.

4 Migration Architecture 42 / 100

4a_crypto_agility 10 / 20

Substrate supports multiple sig schemes (Sr25519, Ed25519, ECDSA). Adding PQC would require pallet development.

4b_account_abstraction_key_rotation 10 / 20

Proxy accounts + multisig. No AA for sig-type rotation.

4c_hard_fork_track_record 15 / 20

Agile Coretime transition Aug 2025; Substrate forkless upgrades via runtime version change.

4d_hybrid_deployment_readiness 7 / 20

Polkadot relay chain future PQC work would cascade to Astar. No direct Astar roadmap.

5 Deployment Execution 2 / 100

5a_mainnet_pqc_pct 0 / 20

no public artifact found

5b_pqc_code_in_client 0 / 20

no PQC in Astar runtime

5c_validator_pqc_adoption 0 / 20

Inherits Polkadot relay chain validators; no PQC keys

5d_published_milestones_count 0 / 20

no PQC milestones

5e_pqc_washing_delta 2 / 20

No PQC announcements

6 Supply Chain Vendor Readiness 5 / 100

6a_wallet 2 / 20

6b_bridge 1 / 20

6c_custodian 1 / 20

6d_rpc_hsm 1 / 20

7 Governance & Coordination 40 / 100

7a_validator_stake_distribution 10 / 20

Inherits Polkadot's ~297 validators; strong decentralization at relay chain.

7b_upgrade_cadence_under_pressure 12 / 20

Substrate forkless upgrades; Agile Coretime transition.

7c_named_coordination_lead 12 / 20

Astar Foundation (Sota Watanabe) + Polkadot coordination.

7d_adversarial_coordination_precedent 6 / 20

No documented adversarial crypto-change.

The X + Y vs Z inequality

X (data shelf life): 5-10 (EOA with key rotation)

Y (migration time): 10-15

Z10 (10% CRQC year): 2036 · Z50 (50%): 2041

Verdict: X+Y > Z (danger).

Four-scenario grid

Scenario	Value preserved	Privacy preserved
quantum never	100%	100%
arrives suddenly pre migration	15%	5%
arrives slowly post migration	80%	70%
arrives slowly mid migration	45%	30%

Peers in the L1 profile

Order-book view of the 9 chains closest to Astar Network by QRI.

Public artifacts used for this scorecard

Each entry below is a sub-score citation. Clicking the link takes you to the public source. A third party should be able to reconstruct every number on this page from these URLs in 48 hours.

Cryptographic Exposure · 1a_primitive_inventory

Substrate + Polkadot primitives.

https://docs.astar.network

Cryptographic Exposure · 1b_shor_grover_pq_tag

https://docs.astar.network

Cryptographic Exposure · 1e_implementation_quality

https://github.com/paritytech/substrate

Supply chain snapshot

wallet Polkadot.js · Talisman · Ledger HW 0 PQC roadmaps

bridge XCM · LayerZero · Wormhole 0 PQC roadmaps

custodian Coinbase Custody · BitGo · Fireblocks 0 PQC roadmaps

rpc_hsm OnFinality · Dwellir · Astar RPC 0 PQC roadmaps

A chain's supply chain cannot migrate faster than its slowest dependency. Zero PQC roadmaps in any of the four categories is a structural blocker, not a lagging indicator.

Analyst notes on the scoring

Parachain status means PQC trajectory tied to Polkadot relay chain. Substrate runtime upgrade mechanism is genuinely forkless which helps agility if PQC pallet materializes.

Scorecard metadata

Profile: L1
Scored: 2026-04-18 by layerqu-v2-scoring-agent-1
v1 reference: chainscreen-v1-archive
QRI raw: 15 · after caps: 15
Confidence interval: ±15
PQC washing ratio: 1x
Burn-vs-rescue: undeclared (depends on Polkadot relay chain policy)

Caps triggered

mosca_cap_60
sutor_stage_cap_2
casado_stage_cap_3
preskill_half_dim2_dim3_dim5_dim6
hybrid_gate_fail_cap_60