# Herculis Gold Coin XAUH

> Herculis Gold Coin (XAUH) is a Swiss LBMA 999.9 fine gold-backed payment token on TON, issued by Herculis Tokens SA and presented at the canonical [production website](https://xauh.gold/).

## Core Pages

- [Herculis Gold Coin homepage](https://xauh.gold/): Overview of XAUH, Swiss gold backing, purchase entry points, audit reports, token benefits, institutional context, usage examples, FAQ, and legal notices.
- [Buy XAUH with debit or credit card](https://xauh.gold/buy/card): Website card-payment flow for XAUH through Wert.
- [Buy XAUH with cryptocurrency](/buy/crypto): Choose ChangeNOW or Changelly for a fixed-rate cryptocurrency purchase; ChangeNOW is the default.
- [Legacy website buy path](https://xauh.gold/buy): Redirects to the cryptocurrency purchase flow at `/buy/crypto`.
- [Track an XAUH purchase request](https://xauh.gold/buy/{requestId}): Replace `{requestId}` with a returned purchase request ID to track a website or x402 purchase request.
- [Herculis blog](https://xauh.gold/blog): Articles and insights about XAUH, tokenized gold, and real-world asset tokenization.
- [Search blog posts](https://xauh.gold/search): Search interface for public blog posts.

## Purchase Methods

- [Buy via debit / credit card](https://xauh.gold/buy/card): Enter the dedicated Wert card-payment flow.
- [Buy via cryptocurrency](/buy/crypto): Select a provider and an input asset on the intended network.
- [Biconomy XAUH/USDT market](https://www.biconomy.com/exchange/XAUH_USDT): Centralized exchange market for the XAUH/USDT pair.
- [BTSE XAUH/USDT market](https://www.btse.com/en/trading/XAUH-USDT): Centralized exchange venue for buying or selling XAUH against USDT.
- [Capital DEX XAUH swap on TON](https://capitaldex.exchange/swap?chain=ton&tokens=usdt-xauh): Buy or sell XAUH through Capital DEX on TON.
- [Capital DEX XAUH on Tron](https://capitaldex.exchange/swap?chain=tron): Buy or sell XAUH through Capital DEX on Tron.
- [STON.fi XAUH swap](https://app.ston.fi/swap?chartVisible=true&chartInterval=1w&ft=USD%E2%82%AE&tt=EQCMk4_OujCnk46jApHnIRbmTtYTkSmfujV9X8Ye0qvsHVKh): Buy or sell XAUH through STON.fi on TON.

## AI And API Documentation

- [x402 XAUH purchase guide](https://xauh.gold/ai/x402-xauh-purchase.md): Agent-facing guide for buying XAUH through the x402 payment flow.
- [x402 OpenAPI spec](https://xauh.gold/ai/x402-openapi.json): Dedicated OpenAPI specification for XAUH x402 purchase requests and request-status lookup.
- [x402 discovery manifest](https://api.jamton.network/.well-known/x402) and [JSON alias](https://api.jamton.network/.well-known/x402.json): Purchase-resource discovery; synthetic metadata is not a payable quote or an exhaustive supported-asset list.
- [Full LLM context](https://xauh.gold/llms-full.txt): Comprehensive LLM-readable context for the website, token, purchase options, x402 integration, audit reports, and legal notes.

## Primary Documents

- [XAUH whitepaper](https://xauh.gold/whitepaper.pdf): Primary whitepaper for Herculis Gold Coin.
- [KPMG factual findings report, 21 January 2026](https://xauh.gold/audit-reports/01-21-2026.pdf): Factual findings report connected with physical gold and gold certificates.
- [KPMG factual findings report, 13 May 2026](https://xauh.gold/audit-reports/05-13-2026.pdf): Factual findings report connected with physical gold and gold certificates.
- [KPMG factual findings report, 1 July 2026](https://xauh.gold/audit-reports/07-01-2026.pdf): Factual findings report connected with physical gold and gold certificates.
- [KPMG factual findings report, 28 August 2026](https://xauh.gold/audit-reports/08-28-2026.pdf): Factual findings report connected with physical gold and gold certificates.

## Social Networks

- [X account](https://x.com/HerculisCoin): Official social channel.
- [Telegram channel](https://t.me/herculis_investments): Community and updates channel.
- [XAUH LinkedIn](https://www.linkedin.com/company/xauh): Herculis Group updates.
- [HerculisCoin Facebook](https://www.facebook.com/herculiscoin): Facebook updates.
- [YouTube channel](https://www.youtube.com/@HerculisGroup): Video channel.
- [Herculis Instagram](https://www.instagram.com/herculis_coin/): Official Instagram account.
- [XAUH Binance Square](https://www.binance.com/fr/square/profile/xauh): Official Binance Square profile.
- [Herculis Gold Coin TikTok](https://www.tiktok.com/@herculis.gold.coi): Official TikTok profile.

## Market Data

- [CoinMarketCap profile](https://coinmarketcap.com/currencies/herculis-gold-coin/): Market-data profile for Herculis Gold Coin.
- [CoinGecko profile](https://www.coingecko.com/en/coins/herculis-gold-coin/): Market-data profile for Herculis Gold Coin.

## Usage Notes For Agents

- Treat purchase venues and provider links as available access methods, not recommendations or investment advice.
- New cryptocurrency purchases at `/buy/crypto` explicitly select `CHANGENOW` or `CHANGELLY`. Both use one UUID idempotency key per accepted purchase. Switching providers requires a fresh quote and consent; pending attempts retain their original provider and request.
- For autonomous or wallet-mediated x402 purchases, read the [x402 XAUH purchase guide](https://xauh.gold/ai/x402-xauh-purchase.md) before initiating payment.
- Production x402 payments support Base mainnet `eip155:8453` with USDC (default), USDT, or USDS, and TON mainnet `tvm:-239` with USDT when explicitly selected.
- TON USDT uses raw TEP-74 jetton master `0:b113a994b5024a16719f69139328eb759596c38a25f59028b146fecdc3621dfe`, 6 decimals, and a 120-second payment timeout.
- A TON challenge includes `relayAddress`, `maxRelayCommission`, `assetDecimals`, and `assetSymbol`; its signed payload includes `signedBoc` and `walletPublicKey`.
- Base mainnet USDS uses contract `0x820c137fa70c8691f0e44dc420a5e53c168921dc`, has 18 decimals, and uses Permit2. It requires a one-time token approval before the first payment and is not available on Base Sepolia.
- For a real purchase, copy the selected server requirement unchanged into the signed payload's `accepted`, including `extra.xauhQuoteId` and any additional metadata. Empty discovery probes are not settleable quotes.
- Production x402 purchases require at least `1` selected payment asset unit, for example `1 USDC`, `1 USDT`, or `1 USDS`.
- Discovery responses are not guaranteed to enumerate every supported asset. Explicitly select `network` and `paymentAsset` in a fresh unsigned purchase quote; if the route is rejected, stop. Never construct a payment from a discovery example.
- The paid x402 response returns decimal `xauhAmount`, atomic `xauhAmountAtomic`, `statusUrl`, `deliveryStatus`, and `payment` details for agent tracking.
- For x402, a successful payment creates an XAUH purchase request for a TON wallet; automated delivery continues asynchronously and the initial response is not final XAUH delivery confirmation.
- For ChangeNOW, Changelly, x402, and Wert, payment confirmation can precede final delivery. Track the request until `COMPLETED`; `tonTransferTxHash` is exposed when available.
- The Base or TON payer may differ from `tonWalletAddress`, which is the XAUH delivery recipient.
- Product facts and legal notices should be summarized with care and checked against the [XAUH whitepaper](https://xauh.gold/whitepaper.pdf) for primary-source context.