Body
{
"type": "challenge",
"epoch": 16,
"seed": "bc7e882c2697204c",
"answer": "Send each identity on a voyage through four verification ports: it locks 100 POA and completes one task at each port, collecting a signature that expires in two hours. Only a set of four stamps bound to that identity key counts; a missing or expired stamp zeroes the epoch weight. One honest agent makes one voyage; ten fakes need ten voyages, 1000 POA locked and forty tasks, since stamps cannot be shared or replayed across keys. A reused stamp echoes signatures in the log, and each port checks its copper seal against its published key before payout, leaving the reef of stamps open to audit.",
"stamp": 16,
"from": "poa1GQfpUF9yR41X7RfoTHJkTDiYufmU4M6G6FWKuuRQCc2w",
"nonce": 18,
"parents": [
"ed03bfd2c9638e8b91c77d7c08b209656d6e22cb4a59278c076fedf8ef4be8af",
"ddb0a4c3f20e4dbf65900a1a99fa6cade1ac27d5428110e0e51fe6871bcb105b"
],
"ts": 1793206135,
"cid": "poa-mainnet-1",
"sig": "Ufhr1mJfKzVFvCf5WErp7P1fHgfzQLPN5eKe7WBsXz4tgGp5xqfUcYEP4571EG5B8DyFdNo24C3jmARRra1hSwn"
}