Contract Metadata

Canonical JSON schemas and human-readable metadata for smart contracts, published as stable static endpoints.

2Schemas
4Interfaces
1Extensions
9Contracts
https://evmnow.github.io/contract-metadata/contracts/{chainId}/{address}.json

Schemas

2 resources
Contract metadata schema

JSON Schema for deployed contract metadata files.

$schema target for contracts/{chainId}/{address}.json
Interface schema

JSON Schema for reusable interface metadata files.

$schema target for schema/interfaces/*.json

Interfaces

4 resources
ERC-20

13 actions

interfaceId 0x36372b07
ERC-721

13 actions

interfaceId 0x80ac58cd

Extensions

1 resource
_component Extension

Registers a custom UI component on an extensible metadata object. Either a component type string, or an object with a `type` and optional `props`. See extensions/_component.md.

_component

Contracts

9 resources
Checks Originals

This artwork may or may not be notable.

Ethereum mainnet / 0x036721e5a769cc48b3189efbb9cce4471e8a48b1
CryptoPunks

One of the earliest NFT projects, predating ERC-721 — 10,000 24×24 pixel-art punks with randomly generated attributes.

Ethereum mainnet / 0xb47e3cd837ddf8e4c57f05d70ab865de6e193bbb
ENS ETH Registrar Controller

The user-facing controller for registering and renewing .eth names, using commit-reveal to prevent front-running.

Ethereum mainnet / 0x59e16fccd424cc24e280be16e11bcd56fb0ce547
EVM.NOW Support

Patronage subscriptions for the EVM.NOW explorer, paid in ETH across tiers and minted as ERC-721 membership NFTs.

Ethereum mainnet / 0xedcbf19024e928c9d903fcf4785e42ad7c271193
Hello World Computer (HWC)

An onchain neural network that learns from yes/no questions, training one shared perceptron from paid answers.

Ethereum mainnet / 0x6901afceb66564a9b6e7193561fb78f0878b5906
Hello World Computer: Artifact (HWC)

The one-of-one onchain artwork of the Hello World Computer: a WebGL particle field driven by its yes/no tallies.

Ethereum mainnet / 0x74806bce19ba454d13595f4313e7d7a7e6a36878
Mnemonic (M)

A single-edition generative artwork stored fully onchain, with a built-in marketplace for bids and sales.

Ethereum mainnet / 0xf3e732194ba87d68fd6ec3d5b1bf813599c8406a
USD Coin (USDC)

Circle's fully reserved US-dollar stablecoin — the canonical USDC on Ethereum, redeemable 1:1 for dollars.

Ethereum mainnet / 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Wrapped Ether

The canonical WETH contract, wrapping native ETH 1:1 as an ERC-20 token used across DeFi.

Ethereum mainnet / 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2

No matching resources.