Utilities

namehash

Compute an ENSIP-1 namehash for any name.

oniym.namehash("kyy.web3");
// 0xf7d7c4fb47297d0f2106ac50d24c93063bc0fe50d559ed65e99edb91cc86f8a2
 
oniym.namehash(""); // 0x0000...0000 (root)

Also exported as a standalone function:

import { namehash } from "@oniym/sdk";

labelhash

keccak256 of a single label string.

oniym.labelhash("kyy");
// 0x...

makeNode

Compute a child node from a parent node and label. Equivalent to keccak256(parentNode ‖ labelhash(label)).

const web3Node = oniym.namehash("web3");
const kyyWeb3 = oniym.makeNode(web3Node, "kyy");
// same as oniym.namehash("kyy.web3")

parseName

Split a full name into its label and TLD parts. Returns null for invalid names.

oniym.parseName("kyy.web3");   // { label: "kyy", tld: "web3" }
oniym.parseName("kyy");        // null — no TLD
oniym.parseName("sub.kyy.id"); // null — subnames not supported
oniym.parseName(".web3");      // null — empty label

coinTypeFor

Get the SLIP-0044 coin type for a supported chain.

oniym.coinTypeFor("eth");  // 60
oniym.coinTypeFor("btc");  // 0
oniym.coinTypeFor("sol");  // 501
oniym.coinTypeFor("sui");  // 784
oniym.coinTypeFor("bnb");  // 714

getTLDs

List all 65 supported TLDs with their namehash nodes.

const tlds = oniym.getTLDs();
// [{ label: "id", node: "0x...", active: true }, ...]

Exported constants

import {
  COIN_TYPES,       // { btc: 0, eth: 60, sol: 501, ... }
  SUPPORTED_TLDS,   // readonly string[] of all 65 TLD labels
  MAX_TLD_COUNT,    // 65
  MAX_TLD_LENGTH,   // 5
  CHAIN_IDS,        // { baseSepolia: 84532, base: 8453 }
  CONTRACT_ADDRESSES, // deployed addresses per chain
} from "@oniym/sdk";