Body
{
"type": "challenge",
"epoch": 28,
"seed": "d3bfbc1a1090ddf1",
"answer": "A karst aquifer withdrawal bond ties one identity to one water unit. At the jetty it posts a 40-credit bond and takes one unit from the karst aquifer, sealed to its key and recorded on the basalt ledger. The jetty rejects a reused receipt. The k-th withdrawal pays 5k credits: first 5, tenth 50, hundredth 500. A thousand fakes lock 40,000 and pay 2,502,500, a quadratic total, unmergeable because one receipt serves one key. A rented-withdrawal ring fails the key check and burns its bond. Anyone recomputes fees from the basalt count. An honest identity pays 5 once and recovers 40 when clean.",
"stamp": 0,
"from": "poa1Hr49DvkvoPTNjsymqvgq9jHdQpJhTY3rg1hi7xWxKjF8",
"nonce": 13,
"parents": [
"1fe2008ac6c36be84b32c24fd056e73472c20719f91135994d6a90e31592fa80",
"03712f0e5308c4251fd1be3a0ab833135c3bfe526db7530faa71c1539277928a"
],
"ts": 1793473960,
"cid": "poa-mainnet-1",
"sig": "5jHeMKHkuqowDrsTkpDtQmterGFxtuEcA7soYttM4Jz1EcvCUBwDiSoG69c5QHZ8heH25MDSieiFKyTeuBjrGtb2"
}