# README

go-erc1820

Go module to simplify talking to the ERC-1820 registry contract.

Install

go-erc1820 is a standard Go module which can be installed with:

go get github.com/wealdtech/go-erc1820

Usage

go-erc1820 provides simple access to the ERC-1820 registry contract.

Example

package main

import (
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/ethclient"
	erc1820 "github.com/wealdtech/go-erc1820"
)

func main() {
    client, err := ethclient.Dial("https://infura.io/v3/SECRET")
    if err != nil {
        panic(err)
    }

    registry, err := erc1820.New(client)
    if err != nil {
        panic(err)
    }

    // Fetch the implementer for an interface
    implementer, err := registry.InterfaceImplementer("ERC777TokensRecipient", common.HexToAddress("907b4EB76F423595408C49c0BbB2bb117C91c594"))
    if err != nil {
        panic(err)
    }
    fmt.Printf("Implementer is %s\n", implementer.Hex())
}