Address converter

A simple converter between ETH (0x...) addresses and Althea-L1 (althea1...) addresses, with additional chain support.

Installation

npm install @althea-net/address-converter

Usage

Converter

import { ethToEthermint, ethermintToEth } from '@althea-net/address-converter'

let address = ethToAlthea('0xACA5D5F3DC8DDFE820890314350BC507F64A7C6E')
// "althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm"

let address = ethermintToEth('althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm')
// "0xACA5D5F3DC8DDFE820890314350BC507F64A7C6E"

Decoders

import { ETH, ALTHEA } from '@althea-net/address-converter'
let hex = ETH.decoder('0xACA5D5F3DC8DDFE820890314350BC507F64A7C6E')
// hex.toString('hex') === "ACA5D5F3DC8DDFE820890314350BC507F64A7C6E"

hex = ALTHEA.decoder('althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm')
// hex.toString('hex') === "ACA5D5F3DC8DDFE820890314350BC507F64A7C6E"

Encoders

import { ETH, ALTHEA } from '@althea-net/address-converter'
let address = ETH.encoder(
  Buffer.from('ACA5D5F3DC8DDFE820890314350BC507F64A7C6E', 'hex'),
)
// address === "ACA5D5F3DC8DDFE820890314350BC507F64A7C6E"

address = ALTHEA.encoder(
  Buffer.from('ACA5D5F3DC8DDFE820890314350BC507F64A7C6E', 'hex'),
)
// address === "althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm"

Althea-L1 support

import { ethToAlthea, altheaToEth } from '@althea-net/address-converter'

let address = ethToAlthea('0xACA5D5F3DC8DDFE820890314350BC507F64A7C6E')
// "althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm"

let address = altheaToEth('althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm')
// "ACA5D5F3DC8DDFE820890314350BC507F64A7C6E"

To work with Gravity Bridge:

import { gravityToAlthea, altheaToGravity } from '@althea-net/address-converter'

let address = gravityToAlthea('gravity14jjatu7u3h07sgyfqv2r2z79qlmy5lrw6v2xmk')
// "althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm"

let address = altheaToGravity('althea14jjatu7u3h07sgyfqv2r2z79qlmy5lrw27asjm')
// "gravity14jjatu7u3h07sgyfqv2r2z79qlmy5lrw6v2xmk"

Canto support

import { ethToCanto, cantoToEth } from '@althea-net/address-converter'

let address = ethToCanto('0xACA5D5F3DC8DDFE820890314350BC507F64A7C6E')
// "canto14jjatu7u3h07sgyfqv2r2z79qlmy5lrw<checksum>"

let address = cantoToEth('canto14jjatu7u3h07sgyfqv2r2z79qlmy5lrw<checksum>') // replace <checksum> with the actual last 6 digits of the bech32 address
// "ACA5D5F3DC8DDFE820890314350BC507F64A7C6E"

Create your own converter

// Bech32 Address support for "foochain1..." addresses
const chainPrefix = "foochain"
const FOOCHAIN = bech32Chain("FOOCHAIN", chainPrefix)

// EIP-55 chain support
const evmChainID = 1234
const EVMCHAIN = hexChecksumChain("MYEVM", evmChainID)

export const fooToMyEVM = (fooAddress: string) => {
  const data = FOOCHAIN.decoder(fooAddress)
  return EVMCHAIN.encoder(data)
}
export const myEVMToFoo = (myevmAddress: string) => {
  const data = EVMCHAIN.encoder(myevmAddress)
  return FOOCHAIN.decoder(data)
}

Reference

• ENSDOMAINS-AddressEnconder