> For the complete documentation index, see [llms.txt](https://waodao.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://waodao.gitbook.io/docs/development/ethereum-blockchain.md).

# Ethereum blockchain

Ethereum remains the primary settlement and ownership layer for WAODAO. The WAODAO NFTs are minted on Ethereum, the main WAO ERC-20 token lives on Ethereum, and the collection is connected to the broader Ethereum NFT ecosystem through OpenSea and other compatible infrastructure.

For WAODAO, the most important qualities of Ethereum are reliability, transparency, provenance and composability. Transaction speed is not the key factor for the NFT archive, because WAODAO mints only one final artwork per day. What matters more is that each artwork can become part of a durable on-chain cultural record, connected to established wallets, marketplaces, explorers and smart contract standards.

The Ethereum WAO token contract is:

`0xc3ad687c8ecb352d56393c77d19018b93a6ad21a`

WAODAO uses battle-tested infrastructure wherever possible, including OpenZeppelin-based token and NFT standards, OpenSea as the main marketplace layer for collectors, and Safe / Gnosis Safe for treasury coordination and multisig asset management.

At the same time, WAODAO is no longer limited to a single-chain model. Ethereum acts as the anchor for long-term ownership and provenance, while Solana expands the project with faster and lower-cost liquidity experiments, Friendly Pools and partner routes. The Solana WAO deployment is connected to Ethereum through Wormhole bridge infrastructure.

This cross-chain structure lets WAODAO keep Ethereum as the main trust and ownership layer while using other networks where they are more suitable for liquidity, experimentation and ecosystem growth.

No blockchain system is completely risk-free. Ethereum itself is highly battle-tested, but smart contracts, bridges, wallets, marketplaces and liquidity pools always carry technical and operational risks. WAODAO therefore treats infrastructure choice as an ongoing process: Ethereum provides the foundation, while cross-chain expansion is added carefully where it creates real utility.