Testnet Experience

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Add to Apple Wallet Save to Google Wallet

MergedERC-8426 is in Ethereum's ERCsOct 24, 2026 · 2:06 AM EST

Docs

Build on ERC-8426.

Put any NFT in Apple Wallet and Google Wallet. The spec, the SDK, the guides and the live contract behind WALLETCHI, all in one place.

Read the spec Get started

terminal

# serve passes for your token
npm i @erc8426/issuer @erc8426/apple @erc8426/google

# add the pass to your contract
npm i @erc8426/contracts

# check any implementation against every MUST
npx @erc8426/conformance --rpc $RPC --contract $ADDR --token 1

The standard

ERC-8426: Wallet Pass Extension for NFTs

Status: Draft. ERC-165 interface id 0xef5f1e71. Merged into ethereum/ERCs Oct 24, 2026 · 2:06 AM EST.

SpecStart hereRead ERC-8426The published standard on ercs.ethereum.org.SourceSpec on GitHubThe markdown in ethereum/ERCs, with its full history.ForumThe discussionThe Ethereum Magicians thread: questions, review, what comes next.PRPull request #2036Every revision and the editor review, merged into master.

The SDK

@erc8426 on npm

MIT licensed. Contracts, a pass server, Apple and Google delivery, a client for wallets and marketplaces, React components, and a conformance suite.

Source on GitHub All packages Live demo

NFT projects@erc8426/contractsSolidity interface, base implementation and use-case examples.Pass servers@erc8426/issuerChallenges, the authorization floor, gated manifests, capability links, rotation.Pass servers@erc8426/appleApple Wallet: pkpass building, the PassKit web service, APNs push.Pass servers@erc8426/googleGoogle Wallet: Save to Google Wallet links, object upserts and pushes.Wallets, marketplaces@erc8426/clientDiscover, resolve and acquire passes from any compliant token.Frontends@erc8426/reactReact hooks and an Add to Wallet button.Everyone@erc8426/conformanceCheck any contract and pass server against every MUST.All of the above@erc8426/coreShared types, constants, CAIP-19, manifest and challenge codecs.

Guides

Read the docs

Written for people shipping passes, from the first token to production.

GuideGetting startedFrom a token to a card on a phone.GuideConceptsDiscovery, freshness, authorization.GuideApple WalletCertificates, the web service, push.GuideGoogle WalletIssuer account, classes, objects.GuideSecurityWhy a pass is a bearer artifact.GuideDeployRunning an issuer in production.GuideFAQThe questions people actually ask.GuideChangelogWhat changed in each release.

This build

WALLETCHI, the live implementation.

A pixel pet that is its own wallet pass, running on Robinhood Chain Testnet. Everything the standard describes, working on real phones.

Chain: Robinhood Chain Testnet (46630)
Interface: supportsInterface(0xef5f1e71)
Pet contract: 0x96100112afec4a034270d96a133c8952e8c63f45

CodeWALLETCHI sourceThe full build behind this site, public on GitHub.GuideHow it worksSix steps, and what happens on chain at every tap.LiveThe ArenaEvery pet, alive or not, and the Pot.PassClaim a passGot a pet from someone? Claim its card.

Apple-issued Pass Type ID certificateTeam ID H97••••53A
Issuer approved by GoogleIssuer ID 3388•••••••••••5037