Share this article

Ethereum's ERC-20 Token Standard Has Been Formalized

Ethereum's ERC-20 standard – which sets the rules for token issuances – has been finalized after being introduced in 2015.

Updated Sep 13, 2021, 6:55 a.m. Published Sep 11, 2017, 5:20 p.m.
Marbles

The standard that governs how new cryptographic tokens can be launched on top of the ethereum blockchain has been been finalized.

Revealed today

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters

by the open-source project's developer team, the ERC-20 standard establishes a common set of rules for tokens issued via ethereum smart contracts, and currently serves as the basis for the many tokens that have been released through initial coin offerings (ICOs).

The standard has now been formalized on the ethereum GitHub page, meaning that going forward, all tokens built on ethereum should conform to the standard.

ERC-20 was previously unenforced, but it had been readily adopted by token developers since its introduction in late 2015. The standard ensures that ethereum-based tokens perform in a predictable way throughout the ecosystem, such that decentralized applications and smart contracts are interoperable across the platform, and that all tokens follow a fixed standard of security.

A token is a script running on top of the ethereum blockchain, with an associated database keeping track of ether payments. The term has gained widespread use in ICOs, most of which already use ERC-20 tokens.

The development comes as the roadmap for ethereum's next major upgrade, Metropolis, becomes clearer. Developers revealed last week that a new testnet will be launched a week from now.

Pending the success of that process, ethereum's actual upgrade could come as early as October.

Glass marbles image via Shutterstock

More For You

KuCoin Hits Record Market Share as 2025 Volumes Outpace Crypto Market

16:9 Image

KuCoin captured a record share of centralised exchange volume in 2025, with more than $1.25tn traded as its volumes grew faster than the wider crypto market.

What to know:

  • KuCoin recorded over $1.25 trillion in total trading volume in 2025, equivalent to an average of roughly $114 billion per month, marking its strongest year on record.
  • This performance translated into an all-time high share of centralised exchange volume, as KuCoin’s activity expanded faster than aggregate CEX volumes, which slowed during periods of lower market volatility.
  • Spot and derivatives volumes were evenly split, each exceeding $500 billion for the year, signalling broad-based usage rather than reliance on a single product line.
  • Altcoins accounted for the majority of trading activity, reinforcing KuCoin’s role as a primary liquidity venue beyond BTC and ETH at a time when majors saw more muted turnover.
  • Even as overall crypto volumes softened mid-year, KuCoin maintained elevated baseline activity, indicating structurally higher user engagement rather than short-lived volume spikes.

More For You

Crypto ETFs with staking can supercharge returns but they may not be for everyone

choices

From yield potential to custody risks, here’s how direct ETH and staking funds compare for different investor goals.

What to know:

  • Investors can now choose between owning ether directly or buying shares in a staking ETF that earns rewards on their behalf.
  • While staking ETFs offers yield, they come with risks and less control than holding ETH in an exchange or wallet.
  • Grayscale’s Ethereum staking ETF recently paid $0.083178 per share, yielding $3.16 in rewards on a $1,000 investment.