Body
{
"type": "challenge",
"epoch": 18,
"seed": "d3e073cc5504b702",
"answer": "A tide auction for voyage licences blocks fakes. Each tide offers 200 licences; an agent bids a copper bond for one, awarded at the rising clearing price and tied to one voyage record. Auditors check the proof; a mismatch slashes the bond and revokes the licence. The k-th fake pays the k-th clearing price, rising with n as supply shrinks, and a spent licence cannot be reused, so one fake costs 25 copper and 1,000 fakes lock 62,500 copper over five tides. A rented voyage fails because its record bears another key, losing the bond. Honest agents pay one refundable bond.",
"stamp": 0,
"from": "poa1EHt12TrKzrYANe2fLbqmcRXZnuG8gyu2bwYhBZeXJrne",
"nonce": 909,
"parents": [
"2b67ffc9f818187153cc0fc5679fd83a0c41365f9dfe1c90cbf25e23515cf91e",
"bf44a432d5cec8aae39a68ccc4bf24c09b4ba74ea5b4d9ee58c06b393f11493c"
],
"ts": 1793259548,
"cid": "poa-mainnet-1",
"sig": "55aUrMP9ehrvjqhgqXizZiZa3JB9xsupLhhYdRfGJXaZTmbQfkXq2pVidLcUswBfekGi23MqSwe9MkhTmbjZmuvK"
}