For first-time buyers and returning buyers alike.
Choose the situation you want to know about. The explanations can be opened in a separate tab while you are buying.
The purchase screens, your account page, the Tips page and the legal pages are currently in Japanese only. Your AI can talk with you in your own language.
From purchase to asking questions with your AI
The book's text and PDF are not included. Your AI's usage fees and the network fee for the payment are not included in the price. Service is guaranteed for at least 3 months from the date of purchase, and you can keep using it as long as the service continues (provision is not guaranteed forever).
Start your purchase (Japanese) →Before you buy
You need three things. ① A supported wallet, ② JPYC or USDC (plus the network fee for the transfer), ③ an account with an AI that can set up MCP connections.
Payment networks: Please pay with a combination offered on the purchase screen (whichever of Polygon / Avalanche C-Chain / Ethereum is supported).
The purchase screen shows only the wallet, currency and network combinations that can be used for payment. The steps differ by network even with the same wallet, so please pay with a combination offered on the purchase screen.
| HashPort Wallet (phone + QR on PC) | Available with the combinations shown on the purchase screen |
| MetaMask and others (browser wallet on PC) | Available with the combinations shown on the purchase screen |
| Other wallets | Do not send funds with combinations not shown on the purchase screen |
Using a phone wallet with a PC
Using a browser wallet on PC (such as MetaMask)
Buying with a single phone
You may need to switch back and forth between the wallet app and the browser. Check the supported environments on the purchase screen to see whether you can buy with a phone alone.
Gas (network fees) and payment tokens
A transfer requires a small amount of ETH on Ethereum, POL on Polygon or AVAX on Avalanche. Check the required amount in your wallet screen when you pay.
After choosing a network, pay with the official JPYC or USDC specified for it. Transfers of other tokens with the same name, or from a different network, cannot be confirmed.
Signing and sending are different
| Connecting a wallet | Your wallet address is shown to the connected site |
| Signing the login message | Confirms that you own the wallet. Signing alone sends no funds |
| Approving a JPYC or USDC transfer | Sends the currency and amount shown to the destination shown. Gas may be charged |
Check the purchase screen's URL, network and destination before approving. Never use a site that asks you to enter your private key or recovery phrase.
Logging in with HashPort Wallet (phone)
Scan the QR code shown on your PC from the WalletConnect icon, not with the regular QR for sending funds. The display may change with app updates, so check the name and URL of the connection.
If a “ネットワーク手数料サポート” (network fee support) notice appears, continue with “このまま接続する” (connect as is) without changing settings. If the signature that follows asks for a transfer, an Approve or gas, do not approve it as a login.
You can also use MetaMask and other wallets shown on the purchase screen. You do not need to prepare HashPort Wallet for Biz (a wallet for sellers).
After logging in, how do I pay?
Once your login signature is confirmed, you automatically move on to checking your order. After you confirm the order, you approve a separate “transfer confirmation” in your wallet app.
Returning after purchase
From the purchase-complete screen, “AIにつなぐ(マイページへ)” (connect your AI — to your page) takes you to your page. Even if you close the screen, you can return to your page any time from “Already purchased” on the product page.
Product and terms of use
| Product | Physical AI Knowledge Access Pass |
| What is provided | An access right for your AI to access the book's structured knowledge |
| Price | 1,000 JPYC or 10 USDC (either: tax included, fixed amount), one-time purchase |
| Service period | Service guaranteed for at least 3 months from purchase. Usable after 3 months while the service continues (it may end in the future) |
| Additional costs | AI usage fees, wallet payment network fees, etc. |
| Records kept at purchase | Wallet address, order and payment history, access right and login authentication records |
| Account registration | No name, email address or password needed. We never hold your private key or recovery phrase |
| Handling on the AI side | What you send to your AI and your conversation history are also subject to that AI service's terms and privacy policy |