Bns-v2-sdk NPM

BNS V2 SDK

The official BNS V2 SDK for interacting with the Stacks Blockchain. This SDK provides a comprehensive set of tools for managing Bitcoin Name System (BNS) operations.

Installation

npm install bns-v2-sdk

Important Note About Transactions

This SDK only builds transaction payloads.

It does not:

Sign transactions
Broadcast transactions to the network
Handle transaction lifecycle
Manage wallet connections

To complete transactions, you'll need to:

Build the payload using this SDK
Sign the transaction using a wallet or the Stacks.js library
Broadcast the transaction to the network
Monitor the transaction status

Features

Complete TypeScript support
Comprehensive API for BNS operations
Supports both mainnet and testnet
Built-in error handling and validation
Automatic fallback mechanisms
Extensive read-only functions

Read-Only Functions

Name Operations

import {
  canRegisterName,
  getNameInfo,
  getOwner,
  getOwnerById,
  getRenewalHeight,
  canResolveName,
  getNamePrice,
  getLastTokenId,
  getBnsFromId,
  getIdFromBns,
  getPrimaryName,
  fetchUserOwnedNames,
  resolveNameZonefile,
} from "bns-v2-sdk";

// Check name availability
const available = await canRegisterName({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Get full name information
const nameInfo = await getNameInfo({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Get name owner
const owner = await getOwner({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Get owner by NFT ID
const ownerById = await getOwnerById({
  id: 123,
  network: "mainnet",
});

// Get name renewal height
const renewalHeight = await getRenewalHeight({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Check if name can resolve
const resolvable = await canResolveName({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Get name price
const price = await getNamePrice({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Get last token ID
const lastId = await getLastTokenId({
  network: "mainnet",
});

// Get BNS information from token ID
const nameInfo = await getBnsFromId({
  id: 123n,
  network: "mainnet",
});

// Get token ID from BNS name
const id = await getIdFromBns({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

// Get primary name for address
const primaryName = await getPrimaryName({
  address: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Get all names owned by address
const ownedNames = await fetchUserOwnedNames({
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Get zonefile data (only for mainnet unless you have your own testnet node)
const zonefile = await resolveNameZonefile({
  fullyQualifiedName: "example.btc",
  network: "mainnet",
});

Namespace Operations

import {
  canNamespaceBeRegistered,
  getNamespaceProperties,
  getNamespacePrice,
} from "bns-v2-sdk";

// Check namespace availability
const available = await canNamespaceBeRegistered({
  namespace: "example",
  network: "mainnet",
});

// Get namespace properties
const properties = await getNamespaceProperties({
  namespace: "btc",
  network: "mainnet",
});

// Get namespace price
const price = await getNamespacePrice({
  namespace: "example",
  network: "mainnet",
});

Contract Calls

Name Registration and Management

import {
  buildNameClaimFastTx,
  buildPreorderNameTx,
  buildRegisterNameTx,
  buildRenewNameTx,
  buildTransferNameTx,
  buildSetPrimaryNameTx,
  buildUpdateZonefileTx,
} from "bns-v2-sdk";

// Fast claim a name (warning: snipeable)
const fastClaimPayload = await buildNameClaimFastTx({
  fullyQualifiedName: "myname.btc",
  stxToBurn: 1000000n,
  sendTo: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Safe two-step registration
const preorderPayload = await buildPreorderNameTx({
  fullyQualifiedName: "myname.btc",
  salt: "random-salt-string",
  stxToBurn: 1000000n,
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

const registerPayload = await buildRegisterNameTx({
  fullyQualifiedName: "myname.btc",
  salt: "random-salt-string",
  stxToBurn: 1000000n,
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Renew name
const renewPayload = await buildRenewNameTx({
  fullyQualifiedName: "myname.btc",
  stxToBurn: 1000000n,
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Transfer name
const transferPayload = await buildTransferNameTx({
  fullyQualifiedName: "myname.btc",
  newOwnerAddress: "SP1HTBVD3JG9C05J7HBJTHGR0GGW7KXW28M5JS8QE",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Set primary name
const setPrimaryPayload = await buildSetPrimaryNameTx({
  fullyQualifiedName: "myname.btc",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Update zonefile
const updateZonefilePayload = await buildUpdateZonefileTx({
  fullyQualifiedName: "myname.btc",
  zonefileInputs: {
    owner: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
    general: "",
    twitter: "@example",
    url: "https://example.com",
    nostr: "",
    lightning: "",
    btc: "",
    subdomains: [],
  },
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

Marketplace Operations

import {
  buildListInUstxTx,
  buildUnlistInUstxTx,
  buildBuyInUstxTx,
} from "bns-v2-sdk";

// List name for sale
const listPayload = await buildListInUstxTx({
  id: 123n,
  price: 1000000n,
  commissionTraitAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  commissionTraitName: "commission-trait",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Unlist name
const unlistPayload = await buildUnlistInUstxTx({
  id: 123n,
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Buy listed name
const buyPayload = await buildBuyInUstxTx({
  id: 123,
  expectedPrice: 1000000n,
  commissionTraitAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  commissionTraitName: "commission-trait",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

Namespace Management

import {
  buildPreorderNamespaceTx,
  buildRevealNamespaceTx,
  buildLaunchNamespaceTx,
  buildNamespaceUpdatePriceTx,
  buildNamespaceFreezePriceTx,
  buildTurnOffManagerTransfersTx,
  buildFreezeManagerTx,
  buildImportNameTx,
} from "bns-v2-sdk";

// Preorder namespace
const preorderNamespacePayload = await buildPreorderNamespaceTx({
  namespace: "example",
  salt: "random-salt-string",
  stxToBurn: 1000000n,
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Reveal namespace
const revealNamespacePayload = await buildRevealNamespaceTx({
  namespace: "example",
  salt: "random-salt-string",
  priceFunction: {
    base: 1000n,
    coefficient: 100n,
    b1: 1n,
    b2: 1n,
    b3: 1n,
    b4: 1n,
    b5: 1n,
    b6: 1n,
    b7: 1n,
    b8: 1n,
    b9: 1n,
    b10: 1n,
    b11: 1n,
    b12: 1n,
    b13: 1n,
    b14: 1n,
    b15: 1n,
    b16: 1n,
    nonAlphaDiscount: 10n,
    noVowelDiscount: 10n,
  },
  lifetime: 52595n,
  namespaceImportAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  namespaceManagerAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  canUpdatePrice: true,
  managerTransfer: true,
  managerFrozen: false,
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Launch namespace
const launchNamespacePayload = await buildLaunchNamespaceTx({
  namespace: "example",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Update namespace price function
const updatePricePayload = await buildNamespaceUpdatePriceTx({
  namespace: "example",
  priceFunction: {
    base: 1000n,
    coefficient: 100n,
    b1: 1n,
    b2: 1n,
    b3: 1n,
    b4: 1n,
    b5: 1n,
    b6: 1n,
    b7: 1n,
    b8: 1n,
    b9: 1n,
    b10: 1n,
    b11: 1n,
    b12: 1n,
    b13: 1n,
    b14: 1n,
    b15: 1n,
    b16: 1n,
    nonAlphaDiscount: 1n,
    noVowelDiscount: 1n,
  },
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Freeze namespace price function
const freezePricePayload = await buildNamespaceFreezePriceTx({
  namespace: "example",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Turn off manager transfers
const turnOffManagerPayload = await buildTurnOffManagerTransfersTx({
  namespace: "example",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Freeze manager
const freezeManagerPayload = await buildFreezeManagerTx({
  namespace: "example",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

// Import name
const importNamePayload = await buildImportNameTx({
  namespace: "example",
  name: "myname",
  beneficiary: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  senderAddress: "SP2PABAF9FTAJYNFZH93XENAJ8FVY99RRM50D2JG9",
  network: "mainnet",
});

Network Configuration

import { configureNetwork } from "bns-v2-sdk";

configureNetwork({
  testnetFallbackUrl: "https://your-testnet-node.com",
});

Error Handling

try {
  const nameInfo = await getNameInfo({
    fullyQualifiedName: "example.btc",
    network: "mainnet",
  });
} catch (error) {
  if (error.message === "Name not found") {
    // Handle non-existent name
  } else {
    // Handle other errors
  }
}