One letter of Kubla Khan, ownable once, ever; price rises with each sale. The letter index goes in the path: /api/poem/char/{i}. GET /api/ledger (free) lists letters already owned; GET /api/poem (free) has metadata.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.001006 USDC | 0x1bBD...8C40 |