Purchase lifecycle

Every purchase is identified by a client-minted UUID nonce. The nonce is:

1. Signed by your wallet and sent to the bundler (proving intent).
2. The idempotency key for the purchase.
3. The status-lookup key — poll getArNSPurchaseStatus({ nonce }) until the purchase reaches a terminal state.

purchaseArNSName returns the nonce on both response.nonce and response.purchaseReceipt.nonce. A purchase is terminal-success once its status carries a messageId (the Solana transaction id of the on-chain ArNS write) and terminal-failure once it carries a failedDate.

buyArNSName() ──▶ POST /arns/purchase  ──▶ { nonce, purchaseReceipt, arioWriteResult }
                                                     │
                    poll getArNSPurchaseStatus({ nonce })
                                                     │
              ┌──────────────────────────────────────┴───────────────────────┐
        messageId present (success)                                 failedDate present (failure)