Book catalogue

Buyer brief: 1,000 modular services and ten book bundles

Buying and recovering a book bundle

Beyond the Biological costs 30 USDC. The other nine books cost 10 USDC each. Each purchase includes both EPUB and PDF of the quoted edition. These are one-time book purchases, not subscriptions or investments.

Connect an agent to CABEZON

  1. Set up a buyer agent with a reachable CARP service, a did:key identity and a signed agent descriptor. Follow CABEZON’s published registration instructions and Nautilus identity instructions. Do not substitute a wallet address for the agent’s identity.
  2. Register that identity with Nautilus and complete CABEZON Concierge’s current challenge/response and any Know Your Human or fee requirements. Those steps are controlled by CABEZON; this website cannot register an agent for you or waive its requirements. Ask the human owner before any registration fee or reputation-service payment.
  3. Ask CABEZON’s Concierge or a registered Searcher for a seller offering the chosen title. Confirm the seller identity and compare its result with Maha’s free book directory. If CABEZON discovery is unavailable, the direct Maha contract may still be inspected, but do not claim CABEZON enrollment or reputation verification succeeded.
  4. Check the exact book ID, current edition, both file hashes and live quote. Use /api/v1/books/{book-id}/bundle, not an older EPUB-only offer. Agent identity enrollment and book payment are separate: a successful CABEZON login does not authorize a purchase, and a payment wallet is not automatically the CARP identity key.

For a runnable buyer implementation, inspect the book buyer adapter 2.1 and its SHA-256 checksum before use. It never enrolls your agent, pays Glassfish or chooses your wallet. The adapter version and book edition are separate; confirm the exact live contract before signing.

One purchase, both formats

  1. Open the chosen book’s purchase contract from the catalogue. Confirm the exact edition, price, payee, two-file manifest and readable license terms. Contract discovery is free; do not pay if unavailable.
  2. Create an order ID and a fresh, cryptographically random 32-byte recovery secret. Save the exact version, manifest hash, terms hash and secret in durable private storage before signing. Do not put the secret in URLs, chat, logs or a public repository.
  3. POST that order without a payment header to obtain an HTTP 402 quote. The quote provides the nonce that binds the purchase to your exact book, edition, order and secret. Check it against the published buyer adapter before signing.
  4. Using your own wallet, approve one native-USDC EIP-3009 authorization on Base for the exact quote. Save the signed authorization before sending it. Wallet or network fees, if any, are separate; approve them independently.
  5. Send the signed request once. Save the returned transaction and receipt. Retrieve each EPUB/PDF chunk using the transaction, payer and original private order, with no new payment header. Verify the chunk hashes, then each complete file’s size and SHA-256 digest.

If a response is lost

Stop before creating a new order or signing another payment. Keep the original authorization and recovery secret. If you know the paid transaction, use the recovery URL in the contract. Otherwise, reconcile the existing authorization with your wallet or contact the seller. A pending or failed HTTP response does not prove that money did not move.

The buyer adapter stops after an uncertain outcome and never automatically repays. Repeating a verified paid authorization retrieves its receipt; chunk recovery itself has no payment operation. Keep your downloaded files, as well as your private order and transaction.

License and data

The quoted license permits personal reading or internal use, not resale, redistribution, copyright transfer or model training. Publications are not professional advice or factual certification. Earlier paid editions retain their original recovery paths; a revised edition does not silently replace previously purchased bytes.

The new bundle service retains payment metadata in Redis for 90 days from preparation. It does not retain raw orders, recovery secrets, raw signatures or customer book content in that payment store. Exact seller-owned edition files are archived privately for delivery. Hosting, payment and RPC providers have their own logging and backup policies; no anonymity or zero-provider-logs promise is made.

For access problems, contact mayone@mahastrategies.com. Do not email your private recovery secret or wallet key.