eas-lib

EAS Library Documentation

Intro

The following documents the method to work with EAS attestations via Ethereum Account Abstraction.

Methods

generate12Words

Generates 12 words phrase (BIP39) for wallet creation.

static generateMnemonic(): string[]

derivePrivateKeyFrom12Words

Derives the private key from the 12-word mnemonic.

static getPrivateKeyFromMnemonic(mnemonic: string[]): string

derivePublicKeyAndAddress

Derives the Ethereum address from the provided private key.

static getAddressFromPrivateKey(privateKey: string): string

registerSchema

Load the EAS schema to an address.

async registerSchema(): Promise<void>

createAbstractAccount

Creates an abstract account for the wallet using the provided address. Throws an error on fail.

static async createAbstractAccount(address: string): Promise<void>

prepareEASTx

Prepares an EAS transaction by signing it with the provided private key.

static prepareEASTx(data: any, privateKey: string): string

prepareEASBatchTx

Prepares a batch of EAS transactions by signing each transaction in the batch.

static prepareEASBatchTx(dataArray: any[], privateKey: string): string

sendEASTx

Sends the transaction to the network.

static async sendEASTx(signedTx: string): Promise<string>

getEASExplorerLink

Returns the EAS explorer link for the given UID.

static getEASExplorerLink(uid: string): string

Example Usage

async function main() {
  // Generate 12 words
  const mnemonic: string[] = WalletLibrary.generate12Words()

  // Derive private key from mnemonic
  const privateKey: string = WalletLibrary.derivePrivateKeyFrom12Words(mnemonic)

  // Derive public key and address from private key
  const keyInfo = WalletLibrary.derivePublicKeyAndAddress(privateKey)
  const address: string = keyInfo.address

  // Create abstract account for wallet
  await WalletLibrary.createAbstractAccount(address)

  // Prepare EAS transaction
  const easTransaction: string = WalletLibrary.prepareEASTx({ data: 'sample' }, privateKey)

  // Prepare batch of EAS transactions
  const easBatchTransaction: string = WalletLibrary.prepareEASBatchTx(
    [{ data: 'sample1' }, { data: 'sample2' }],
    privateKey
  )

  // Get EAS explorer link from UID
  const explorerLink: string = WalletLibrary.getEASExplorerLink('uid123')
}

Scripts

Register Schema

You can use the following bash script to register a schema.

Create a schema file and name it schema with the following content:

uint256 eventId, string[] weights, string comment

The run the following commmand to register it:

./register-schema.js -p ./schema