# House Party Protocol

Source: https://developers.bitgo.com/docs/house-party-protocol

## Overview

House Party Protocol (HPP) is an AI-native Arbitrum Orbit Layer 2 blockchain secured by Ethereum. The network is fully EVM-compatible and uses AnyTrust data availability to deliver scalable, low-cost infrastructure for decentralized applications and autonomous agents.

## Explorer

- **Mainnet:** <a href="https://explorer.hpp.io" target="_blank" rel="noreferrer">https://explorer.hpp.io</a>
- **Testnet:** <a href="https://sepolia-explorer.hpp.io" target="_blank" rel="noreferrer">https://sepolia-explorer.hpp.io</a>

## Wallets Types

BitGo enables holding House Party Protocol in the following wallet types:

|                  | Multisig Cold | Multisig Hot | MPC Cold | MPC Hot |
| ---------------- | ------------- | ------------ | -------- | ------- |
| **Custody**      | ❌            | ❌            | ✅       | ❌      |
| **Self-Custody** | ❌            | ❌            | ✅       | ✅      |

## Ticker Symbols

|            | Mainnet | Testnet |
| ---------- | ------- | ------- |
| Ticker     | hppeth  | thppeth |
| Chain ID   | 190415  | 181228  |

## Faucet

You can use a faucet to obtain free testnet thppeth for development and testing.

**Faucet:** <a href="https://faucet.hpp.io" target="_blank" rel="noreferrer">https://faucet.hpp.io</a>

## Units

Each hppeth consists of `1,000,000,000,000,000,000` (<code>10<sup>18</sup></code>) wei, so not even a single hppeth can be stored numerically without exceeding the range of JavaScript numbers. Gas fees are denoted in gwei.

- 1 hppeth = <code>10<sup>18</sup></code> wei
- 1 wei = <code>10<sup>-18</sup></code> hppeth
- 1 gwei = <code>10<sup>-9</sup></code> hppeth

For that reason, only string balance properties are available, which are `balanceString`, `confirmedBalanceString`, and
`spendableBalanceString`.

## Tokens

House Party Protocol natively supports ERC20 tokens. BitGo-supported House Party Protocol tokens can be accessed on the Mainnet (e.g. <a href="https://assets.bitgo.com/coins" target="_blank" rel="noreferrer">BitGo coins and tokens</a>).

## Fees

House Party Protocol supports EIP-1559 gas estimation. Fees consist of a base fee that adjusts dynamically based on block utilization plus an optional priority tip. As an Arbitrum Orbit chain, fees also include an L2 component for posting data to the parent chain. The network denominates and pays gas in ETH.

## Create Wallet

```javascript
bitgo
  .coin('thppeth')
  .wallets()
  .generateWallet({
    label: 'My Test Wallet',
    passphrase: 'secretpassphrase1a5df8380e0e30',
    enterprise: '5612c2beeecf83610b621b90964448cd',
    walletVersion: 4,
  })
  .then(function (wallet) {
    // print the new wallet
    console.dir(wallet);
  });
```
```shell
export BITGO_EXPRESS_HOST="<YOUR_LOCALHOST>"
export COIN="thppeth"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"
export LABEL="<DESIRED_WALLET_NAME>"
export PASSPHRASE="<YOUR_BITGO_LOGIN_PASSPHRASE>"
export ENTERPRISE_ID="<YOUR_ENTERPRISE_ID>"

curl -X POST \
 http://$BITGO_EXPRESS_HOST/api/v2/$COIN/wallet/generate \
 -H 'Content-Type: application/json' \
 -H "Authorization: Bearer $ACCESS_TOKEN" \
  -d '{
    "label": "'"$LABEL"'",
    "passphrase": "'"$PASSPHRASE"'",
    "enterprise": "'"$ENTERPRISE_ID"'",
    "walletVersion": 4
}'
```

## Create Address

```javascript
bitgo
  .coin('thppeth')
  .wallets()
  .getWallet({ id: '585c51a5df8380e0e3082e46' })
  .then(function (wallet) {
    return wallet.createAddress();
  })
  .then(function (newAddress) {
    // print new address details
    console.dir(newAddress);
  });
```
```shell
export WALLET="585c51a5df8380e0e3082e46"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"

curl -X POST \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://app.bitgo-test.com/api/v2/thppeth/wallet/$WALLET/address
```

## Consolidate Balance

Consolidation Fee Source: House Party Protocol Gas Tank

House Party Protocol uses forwarders, so it does not support manual consolidation.

## Estimate Fee

```javascript
const BitGoJS = require('../../../src/index.js');
const bitgo = new BitGoJS.BitGo({ env: 'test' });
const accessToken = '<YOUR_ACCESS_TOKEN>';
const coin = 'thppeth';

async function getFeeEstimate() {
  try {
    await bitgo.authenticateWithAccessToken({ accessToken });
    const res = await bitgo.coin(coin).feeEstimate({ numBlocks: 2 });
    console.dir(res);
  } catch (err) {
    console.error('Error fetching fee estimate:', err);
  }
}

getFeeEstimate();
```
```shell
export COIN="thppeth"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"

curl -X GET \
 https://app.bitgo-test.com/api/v2/$COIN/tx/fee \
 -H 'Content-Type: application/json' \
 -H "Authorization: Bearer $ACCESS_TOKEN"
```

## Transact

Withdrawal Fee Source: Wallet Base Address

```javascript
const tx = await fundedWallet.send({
    address: '<DESTINATION_ADDRESS>',
    amount: '<AMOUNT>',
    walletPassphrase: process.env.PASSWORD,
  });
```
```shell
export BITGO_EXPRESS_HOST="<YOUR_LOCALHOST>"
export COIN="thppeth"
export WALLET_ID="<YOUR_WALLET_ID>"
export ACCESS_TOKEN="<YOUR_ACCESS_TOKEN>"
export ADDRESS="<DESTINATION_ADDRESS>"
export AMOUNT="<AMOUNT_IN_BASE_UNITS>"
export WALLET_PASSPHRASE="<YOUR_WALLET_PASSPHRASE>"

curl -X POST \
 http://$BITGO_EXPRESS_HOST/api/v2/$COIN/wallet/$WALLET_ID/sendcoins \
  -H 'Content-Type: application/json' \
 -H "Authorization: Bearer $ACCESS_TOKEN" \
  -d '{
    "address": "'"$ADDRESS"'",
    "amount": "'"$AMOUNT"'",
    "walletPassphrase": "'"$WALLET_PASSPHRASE"'"
}'
```

## Stake

House Party Protocol isn't a stakeable asset.

## See Also

- [Create MPC Wallets](/docs/wallets-create-mpc-keys)
- [Withdraw from Wallet - Custody MPC](/docs/withdraw-wallet-type-custody-mpc)
- [Withdraw from Wallet - Self-Custody MPC (Manual)](/docs/withdraw-wallet-type-self-custody-mpc-manual)
- [Withdraw from Wallet - Self-Custody MPC (Simple)](/docs/withdraw-wallet-type-self-custody-mpc-simple)
- [House Party Protocol documentation](https://docs.hpp.io/) (official docs)