Crypto Gloss

Avalanche Subnets

Avalanche Subnets (rebranded as “Avalanche L1s” with the Avalanche9000 / Etna upgrade in December 2024) are customizable, sovereign blockchain networks built within the Avalanche ecosystem — each running its own virtual machine, validator set, and gas token while retaining access to Avalanche’s cross-chain interoperability through Avalanche Warp Messaging — and which had their cost of deployment slashed by 99.9% (from ~$2,000/month to under $2/month) by Avalanche9000, triggering a significant wave of new subnet launches across gaming, enterprise, and DeFi applications.

Subnets have attracted traditional gaming companies (Gunzilla Games, Shrapnel), financial institutions (Evergreen institutional subnet), and DeFi protocols. They predate much of the current “appchain thesis” conversation, representing one of the earliest production implementations of application-specific blockchains in the multi-chain era.

Background: The Avalanche Architecture

To understand subnets, you must understand Avalanche’s three-chain architecture:

Three Native Chains

X-Chain (Exchange Chain):

  • UTXO-based chain for asset creation and transfers
  • Fast finality for AVAX transfers
  • Akin to Bitcoin’s “asset layer”

C-Chain (Contract Chain):

  • EVM-compatible chain for smart contracts
  • Where 99% of Avalanche DeFi lives (Trader Joe, AAVE on Avalanche, GMX)
  • Compatible with Ethereum tooling (MetaMask, Hardhat, ethers.js)

P-Chain (Platform Chain):

  • Coordinates validators and subnets
  • Staking and validator management
  • Subnet creation and coordination

How a Subnet Fits In

Each subnet is connected to the P-Chain:

  • P-Chain tracks subnet validator sets
  • Validators running subnets must also validate the Primary Network (X/C/P chains)
  • Primary Network validation requires staking 2,000 AVAX (pre-Avalanche9000) — the cost barrier

Avalanche9000: The Game Changer

Launched: December 2024

Avalanche9000 (Etna upgrade) is the most significant change to subnet economics since launch:

Parameter Pre-9000 Post-9000
Minimum validator stake 2,000 AVAX (~$90,000) ~1.33 AVAX (~$65)
Monthly infrastructure cost ~$2,000+ ~$2
Primary network validation required? Yes (all validators) No (PoA subnets can exempt)
Custom gas tokens Optional Standard

Impact: The elimination of the requirement to stake 2,000 AVAX to validate subnets removed the largest barrier for smaller teams. Within weeks of Avalanche9000, dozens of new subnet launches were announced.

Technical Details of Etna/9000

  • EIP-4844 equivalent (Durango): Fee reduction for C-chain transactions
  • P-Chain EVM: The P-Chain itself becomes EVM-compatible (enabling cross-chain contract calls involving P-chain state)
  • Warp Messaging formalization: Inter-subnet communication via Avalanche Warp Messaging (AWM) is standardized

How Subnets Work

The following sections cover this in detail.

Creating a Subnet: Steps

  1. Deploy validators: Spin up validator nodes (can be standard Avalanche nodes)
  2. Register on P-Chain: Submit subnet creation transaction; pay small fee in AVAX
  3. Define VM: Choose virtual machine (Subnet-EVM is most common — Avalanche’s fork of go-ethereum), or deploy custom VM
  4. Configure parameters:
    Gas token (AVAX or custom token)
    Block time
    Gas limits
    Whitelist/blacklist of addresses for KYC subnets
  5. Activate: Subnet begins producing blocks

Virtual Machine Options

Subnet-EVM: Fork of go-ethereum with Avalanche-specific modifications. Fully EVM-compatible. Most subnets use this.

HyperSDK: High-performance custom VM framework developed by Ava Labs. For projects needing >10,000 TPS with custom transaction types.

Custom VMs: Any VM implementing the Avalanche VM specification — could theoretically run Move, SolanaVM, or any custom execution environment.

Avalanche Warp Messaging (AWM)

Subnets communicate via AWM:

  • Validators sign messages with BLS keys
  • Aggregate signature (BLS multi-sig) is verified on destination subnet
  • Enables native cross-subnet token transfers without external bridges
  • Teleporter is the smart contract layer built on AWM for ERC-20 cross-subnet transfers

Security: AWM doesn’t rely on external bridge validators — it reuses Avalanche validators’ existing key material, meaning 60%+ of stake weight signing is required for message validity.

Notable Subnets / Avalanche L1s

The following sections cover this in detail.

Gaming Subnets

DFK Chain (DeFi Kingdoms):

  • One of the first major gaming subnets (launched 2022)
  • Custom gas token: JEWEL
  • Transaction throughput optimized for GameFi micro-transactions
  • Migrated from Harmony after Horizon Bridge hack

Beam (Gunzilla Games / Merit Circle):

  • Built for gaming; Merit Circle DAO backing
  • BEAM gas token
  • AvaCloud-hosted infrastructure
  • Supports traditional game studio deployments

Shrapnel:

  • Military FPS game on Avalanche subnet
  • AAA game studio (Neon Machine)
  • SHRAP token on subnet

Institutional Subnets

Evergreen Subnet (Spruce testnet → Prod):

  • Designed for financial institutions requiring KYC/AML compliance
  • Permissioned validator set (institutions only)
  • Custom whitelist: only verified addresses transact
  • Built with Ava Labs directly; targets tokenized securities

AvaCloud: Ava Labs’ hosted subnet-as-a-service platform

  • One-click subnet deployment
  • No infrastructure expertise required
  • Targets enterprises wanting blockchain customization without DevOps burden

DeFi Subnets

Dexalot:

  • CLOB-based DEX on its own subnet
  • Off-chain orderbook, on-chain settlement (similar architecture to dYdX V4)
  • ALOT gas token

Lamina1:

  • Metaverse/virtual world subnet
  • Partnership with Neal Stephenson (Snow Crash author, coined “metaverse”)

Subnet vs Rollup: Architectural Comparison

Property Avalanche Subnet Ethereum Rollup (OP Stack/Arbitrum)
Security Own validator set Inherits Ethereum L1
Settlement Independent Settles to Ethereum
Customization Full VM, gas token, rules Mostly EVM-compatible
Cost Min ~$2/month (post-9000) Variable (sequencer ops)
Interoperability AWM/Teleporter Bridges, OP Superchain
Finality ~1–2 sec (own consensus) ~1 sec + L1 finality (7 days naive)

Key distinction: Subnet validators are economically independent — subnet security scales with subnet staking, not with Avalanche Primary Network stake. Ethereum rollups are “renting” Ethereum security; subnets are providing their own.

AVAX and Subnets

AVAX remains central to subnet economics:

  • Subnet creation fee: Paid in AVAX on P-Chain
  • Validator staking (Avalanche Primary Network): 2,000 AVAX required for primary network validation (reduced requirements for subnets under Avalanche9000)
  • Burned fees: C-chain fees are burned in AVAX; some subnet fee burn mechanisms reference AVAX
  • Cross-chain liquidity: Avalanche Bridge connects C-Chain to Ethereum; subnets access Ethereum liquidity via the C-Chain

History

  • 2020 — Avalanche mainnet launches; subnet architecture is a core feature from launch
  • 2022 — DFK Chain (DeFi Kingdoms) launches as one of the first major gaming subnets; Evergreen institutional subnet (Spruce testnet) begins
  • 2022–2023 — Beam (Merit Circle / Gunzilla Games), Shrapnel, Dexalot, and Lamina1 subnets launch
  • 2024 (April) — AvaCloud (subnet-as-a-service) expands; enterprise deployments grow
  • December 2024 — Avalanche9000 (Etna upgrade) activates; minimum validator stake drops from 2,000 AVAX (~$90,000) to ~1.33 AVAX (~$65); monthly cost from ~$2,000 to ~$2; dozens of new subnet launches announced

Common Misconceptions

  • “Avalanche Subnets are Ethereum Layer 2s.” — Subnets are sovereign blockchains with their own validator sets — not rollups settling to Avalanche’s primary network. They’re closer to independent L1s in the Avalanche ecosystem than to Ethereum rollups.
  • “All subnets must use AVAX as their gas token.” — Subnets can configure any custom token as their gas token. The AVAX requirement is for staking on Avalanche’s primary network, not for subnet transaction fees.

Social Media Sentiment

  • r/Avax: Subnets and L1s are the most-discussed Avalanche scaling topic; Avalanche9000 was received extremely positively as a barrier-removal upgrade.
  • X/Twitter: Ava Labs announces new subnet/L1 partnerships frequently; gaming subnet launches generate mainstream press coverage.
  • Discord (Avalanche): Validators, developers, and subnet teams are active; AvaCloud and technical subnet deployment questions are frequently discussed.

Last updated: 2026-04

Related Terms

See Also

  • Avalanche (AVAX) — the primary network and AVAX token that underlies subnet economics
  • Appchain — the broader category of application-specific blockchains that subnets represent
  • Ethereum Layer 2 — the alternative scaling approach using rollups; subnets use a sovereign chain model instead

Sources