Addresses
If the case is mixed, it is a Checksum Address, which uses a specific pattern of uppercase and lowercase letters within a given address to reduce the risk of errors introduced from typing an address or cut and paste issues.
All functions that return an Address will return a Checksum Address.
The ICAP Address Format was an early attempt to introduce a checksum into Ethereum addresses using the popular banking industry's IBAN format with the country code specified as XE.
Due to the way IBAN encodes address, only addresses that fit into 30 base-36 characters are actually compatible, so the format was adapted to support 31 base-36 characters which is large enough for a full Ethereum address, however the preferred method was to select a private key whose address has a
0
as the first byte, which allows the address to be formatted as a fully compatibly standard IBAN address with 30 base-36 characters.In general this format is no longer widely supported anymore, however any function that accepts an address can receive an ICAP address, and it will be converted internally.
Returns address as a Checksum Address.
If address is an invalid 40-nibble HexString or if it contains mixed case and the checksum is invalid, an INVALID_ARGUMENT Error is thrown.
The value of address may be any supported address format.
// Injects the checksum (via upper-casing specific letters)
hethers.utils.getAddress("0x8ba1f109551bd432803012645ac136ddd64dba72");
// '0x8ba1f109551bD432803012645Ac136ddd64DBA72'
// Converts and injects the checksum
hethers.utils.getAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36");
// '0x8ba1f109551bD432803012645Ac136ddd64DBA72'
// Throws if a checksummed address is provided, but a
// letter is the wrong case
// ------------v (should be lower-case)
hethers.utils.getAddress("0x8Ba1f109551bD432803012645Ac136ddd64DBA72")
// [Error: bad address checksum] {
// argument: 'address',
// code: 'INVALID_ARGUMENT',
// reason: 'bad address checksum',
// value: '0x8Ba1f109551bD432803012645Ac136ddd64DBA72'
// }
// Throws if the ICAP/IBAN checksum fails
hethers.utils.getIcapAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK37");
// Error: INVALID_ARGUMENT
// Throws if the address is invalid, in general
hethers.utils.getIcapAddress("I like turtles!");
// Error: INVALID_ARGUMENT
getIcapAddress("0x8ba1f109551bd432803012645ac136ddd64dba72");
// 'XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36'
getIcapAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36");
// 'XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36'
Returns true if address is valid (in any supported format).
isAddress("0x8ba1f109551bd432803012645ac136ddd64dba72");
// true
isAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36");
// true
isAddress("I like turtles.");
// false
Returns the alias for the provided publicKey. The public key may be compressed or uncompressed.
computeAlias("0x19ceac7a7132ac20b41bebca8f766ab79667fa6591277263f622385764d01ef5");
// '0.0.BHVfad0xeFdKiqt0O1pOpNouw0g4vZ6tEiuRlAW3BllfoW6sD75dxoMWtXEMakFaqEQFdALbkrsbFd1QNi+I0Zw='
Returns the checksum address for the provided ECDSA hash. Converts characters to upper or lower case in the correct locations.
hethers.utils.getChecksumAddress("0x8ba1f109551bD432803012645Ac136ddd64DBA72")
// 0x8ba1f109551bD432803012645Ac136ddd64DBA72
Extracts the
AccountId
from the provided transactionId.
getAccountFromTransactionId("0.0.1546615-1641987871-235099329")
// 0.0.1546615
asAccountString("0x0000000000000000000000000000000000000001")
// 0.0.1
Returns the address for publicOrPrivateKey. A public key may be compressed or uncompressed, and a private key will be converted automatically to a public key for the derivation.
NOTE: This method would work properly only with Alias ECDSA accounts. Addresses on ED25519 and non-alias ECDSA accounts can not be computed.
// Public key (uncompressed)
computeAddress("0x04b3c641418e89452cd5202adfd4758f459acb8e364f741fd16cd2db79835d39d2cb8be79be6ac6e1fb9da8013904a077c3909110a122311f470f1dcc390a5aca6")
// "0x67D8d32E9Bf1a9968a5ff53B87d777Aa8EBBEe69"
// Public key (compressed)
computeAddress("0x02b3c641418e89452cd5202adfd4758f459acb8e364f741fd16cd2db79835d39d2")
// "0x67D8d32E9Bf1a9968a5ff53B87d777Aa8EBBEe69"
// Private key
computeAddress("0x105d050185ccb907fba04dd92d8de9e32c18305e097ab41dadda21489a211524")
// "0x67D8d32E9Bf1a9968a5ff53B87d777Aa8EBBEe69"
const from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72";
const salt = "0x7c5ea36004851c764c44143b1dcb59679b11c9a68e5f41497f6cf3d480715331";
const initCode = "0x6394198df16000526103ff60206004601c335afa6040516060f3";
const initCodeHash = keccak256(initCode);
getCreate2Address(from, salt, initCodeHash);
// '0x533ae9d683B10C02EbDb05471642F85230071FC3'
Last modified 1yr ago