# Spark BTKN Airdrops

Spark now supports **airdrops directly to users’ Xverse wallets** — using their **Taproot identity** as a bridge between the Ordinals world and the Spark ecosystem.

With this setup, projects can reward active Bitcoin users (based on their `bc1p…` Taproot addresses) while ensuring their tokens automatically appear inside Xverse.

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### 🎯 Overview

Each Xverse wallet has **two Spark addresses** under the hood:

| Address Type                      | Purpose                                                                 | Visibility            |
| --------------------------------- | ----------------------------------------------------------------------- | --------------------- |
| **Primary Spark Address**         | Used for main balance, trading, and DeFi interactions                   | Visible & shareable   |
| **Taproot-Derived Spark Address** | Used *only* for receiving airdrops based on the user’s Taproot identity | Hidden, not shareable |

When a project airdrops tokens to a user’s **Taproot-derived Spark address**, Xverse automatically:

* Detects the balance;
* Displays it as part of the total token balance on the dashboard;
* Adds a ✳️ **“Claim”** label next to the token.

When the user clicks **Claim**, the wallet simply **moves the tokens from the Taproot-derived address to their main Spark address** — consolidating balances without any manual setup.

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### 🧠 Why Use Taproot-Derived Addresses?

Taproot addresses (the ones starting with `bc1p…`) are widely used by Ordinals, Runes, and BRC-20 communities.\
By deriving a Spark address from a user’s Taproot public key, projects can **target on-chain Bitcoin identities** directly — no sign-up or wallet linking required.

It’s a seamless bridge between **Bitcoin culture** and **Spark-native tokens**.

***

### 🧰 Deriving a User’s Spark Airdrop Address

To airdrop Spark tokens to a user based on their Taproot address, you can derive the corresponding **Spark airdrop address** using the snippet below.

This ensures compatibility with Xverse’s “Claim” flow and balance aggregation.

```ts
import { Address } from '@scure/btc-signer';
import { hex } from '@scure/base';
import { encodeSparkAddress } from '@buildonspark/spark-sdk';

const getSparkAirdropAddress = async (taprootAddress: string): Promise<string> => {
  const address = Address().decode(taprootAddress);

  if (address.type !== 'tr') {
    throw new Error('Invalid taproot address provided');
  }

  const identityPublicKey = hex.encode(address.pubkey);
  const sparkAirdropAddress = encodeSparkAddress({
    identityPublicKey: `02${identityPublicKey}`,
    network: 'MAINNET',
  });

  return sparkAirdropAddress;
};
```

✅ **Notes:**

* The derivation follows [Spark PR #37](https://github.com/buildonspark/spark/pull/37).
* Only `tr` (Taproot) addresses are supported.
* The resulting address is a valid **Spark address on mainnet**, ready to receive Spark BTKN airdrops.

***

### 💸 How It Looks for Users in Xverse

1. The project airdrops tokens (e.g. `$DRAGON`) to the user’s Taproot-derived Spark address.
2. Xverse detects the balance and displays it in the dashboard total.
3. A ✳️ **“Claim”** tag appears next to `$DRAGON`.
4. The user opens the token dashboard and clicks **Claim your 50 $DRAGON airdrop**.
5. Xverse shows a **transaction review screen**, confirming:
   * From: Taproot-derived Spark address
   * To: Primary Spark address
   * Amount: Full token balance
6. After confirming, the tokens move to the main Spark wallet — clean, unified, and ready to use in DeFi or swaps.

<figure><img src="https://3630714736-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F33DLypUqgcjkBSmN0gZn%2Fuploads%2FWErgywDx3zR1h90Ct9X0%2Fimage.png?alt=media&#x26;token=ec24db6e-224d-4751-8472-5f142f81216a" alt=""><figcaption></figcaption></figure>

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### 🪄 Developer Benefits

* No need for users to link wallets or sign messages.
* Works with any existing Taproot user base.
* Instantly compatible with Xverse — airdrops appear automatically.
* Smooth, one-click claiming UX built directly into the wallet.
* More details: [How to Airdrop Spark Tokens to Any Xverse User via Their Taproot Address ](https://www.xverse.app/blog/sparkairdropclaim)

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