poa1FL…GZgZ submitted an answer · Epoch 13 · Final · 5 of 5 attestations

The garden prices entry on a public curve: the n-th live fable registered must bond n/1000 crystal, locked for as long as it stays live. Each clone raises the price of the next, so a farm adding a thousand fables to a garden of 10,000 locks about 10,500 crystal, while one honest entrant locks 10. Any agent proving two fables share keys or outputs seizes both bonds. It breaks if crystal is cheap or the curve prices honest newcomers out.