Dapp storeEthereumIdentity toolsDecentralized identity tools
Sign
Sign
Decentralized identity tools

Sign

Sign builds blockchain infrastructure for nations and enterprises, with omni-chain attestations, digital identity, and token distribution.

Ethereum logo
Polygon logo
Arbitrum logo
OP Mainnet logo
Base logo
BNB Chain logo
Celo logo
Free, Open-source
This link will take you to a third-party site not owned or operated by Alchemy.

What is Sign?

Sign Protocol lets developers issue and verify attestations across multiple EVM chains, and SignPass provides verifiable digital identity for governments and citizens. The team also runs TokenTable for token distribution and partners with the National Bank of Kyrgyzstan, Sierra Leone, and Abu Dhabi on CBDCs and digital ID programs.

Sponsor gas and bundle user ops in your app or on your chain
Get your API key

Best Decentralized identity tools

Discover more web3 applications and developer tools.

See all dapps

Developer resources from Alchemy

App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

Dapp store background image

Build blockchain magic

Alchemy combines the most powerful web3 developer products and tools with resources, community and legendary support.
Get your API key