Complete Guide to Cryptocurrency Taxonomy: From Accounting Models to Token Standards

Cryptocurrencies aren't classified by a single criterion — they're multi-dimensional structures where multiple "classification axes" overlap simultaneously. Let's clarify why terms like UTXO, EVM, and ERC-20 shouldn't be compared on the same level, and what the truly important classification criteria are.

Core Conclusion: Multi-Dimensional Classification

Many people simply categorize crypto as "Bitcoin vs Ethereum vs Altcoins." In reality, multiple independent classification axes exist simultaneously, and each coin is defined by a specific combination of these axes.

💡 Key: It's not about "what type of coin" → It's about what combination of architecture it uses.

The 3 Most Important Classification Axes

① Accounting Model — The Most Fundamental Difference

This is the most fundamental classification that determines how transactions are processed.

UTXO (Unspent Transaction Output): Used by Bitcoin. Balance consists of multiple "coins." Transactions consume existing coins and create new ones.
Account Model: Used by Ethereum. Stores balance directly for each address, like a bank account.

This difference affects everything from wallet implementation to exchange integration to privacy levels.

② Execution Environment (VM) — Core of the Dev Ecosystem

The type of virtual machine that runs smart contracts.

EVM (Ethereum Virtual Machine): Develop with Solidity. Shared by Ethereum, Polygon, BSC, etc.
Non-EVM: Solana (Rust/C), Cardano (Haskell), etc. Dev tools and ecosystems are completely different.

③ Token Standards — Specification Differences

The specification followed when creating tokens on each chain.

ERC-20: Ethereum-based standard (most widely used)
TRC-20: TRON network standard
SPL: Solana token standard
BRC-20: Bitcoin-based token standard (relatively new)

Common Confusion: Concepts from Different Dimensions

Many beginners try to compare UTXO, EVM, and ERC-20 on the same level. But these are concepts on completely different classification axes.

Term	Meaning	Classification Axis
UTXO	Accounting method	Accounting Model
EVM	Execution environment	Virtual Machine
ERC-20	Token specification	Token Standard
Stablecoin	Use/value pegging	Economic Classification
Bitcoin family	Network lineage	Chain Family

These aren't competing concepts — they're criteria viewed from different dimensions.

Interactive Explorer: Compare Coin Architectures

Select coins in the explorer below and compare their properties across each classification axis. You can instantly identify coins that share the same attributes and those with completely different structures.

Accounting Models: Essentially Two Types

Fundamentally, there are only UTXO and Account — just 2 types. But variant models exist:

eUTXO (Extended UTXO): Used by Cardano. An extended model adding state to UTXO.
Object-based: Used by Sui. Treats assets as "objects."
Hybrid: Attempts to combine advantages of both models.

Ultimately, all accounting models are variants or combinations of UTXO and Account.

Additional Classification Criteria

Beyond the big three axes, there are important criteria for understanding crypto:

Consensus Algorithm: PoW (Proof of Work), PoS (Proof of Stake), DPoS (Delegated PoS)
Layer Structure: L1 (main chain), L2 (scaling layer)
Decentralization Level: Fully decentralized (BTC) vs semi-decentralized (SOL)
Token Economics: Fixed supply (BTC 21M) vs burn mechanism (ETH)
Throughput (TPS): BTC 7 TPS vs SOL 65,000 TPS
Governance: On-chain vs off-chain decision making
Use Case: Store of value, DeFi, payments, NFT, gaming

The Full Picture: Cryptocurrency DNA

Ultimately, a cryptocurrency is defined by a specific combination of these classification axes:

Cryptocurrency =
  [Accounting Model]     ← UTXO vs Account
+ [Consensus Algorithm]  ← PoW / PoS
+ [Execution Environment]← EVM compatibility
+ [Token Standard]       ← ERC-20 etc.
+ [Network Structure]    ← L1 / L2
+ [Economic Structure]   ← Issuance / Burn
+ [Use Case]            ← Payments / DeFi / NFT

💡 Practical Perspective: Understanding this taxonomy is essential for exchange listing reviews, wallet development, and DeFi protocol design. It's not about "which coin is better" — it's about "which architectural combination fits my purpose."

Conclusion

To truly understand cryptocurrency, you need to look beyond individual coin prices and names to understand what combination of structural layers each coin is composed of. With this multi-dimensional taxonomy, when a new project launches, you can instantly identify it: "Ah, this is an Account model + PoS + EVM-compatible + L2 structure."