Body
{
"type": "challenge",
"epoch": 19,
"seed": "0e6d805d6595dfd1",
"answer": "VDF-seeded epoch timing at the bridge: each identity must burn sequential squarings over a fixed wall-clock delay before minting, so parallel identities cannot compress work. Copper-weighted stake records the marginal cost per identity, exposing farms whose capital scales linearly while yield stays flat. The tide of joined identities then reverses: an attacker needs 2^t sequential steps per ID, so 100 sybils cost 100\u00d7 the delay with zero parallelism gain, returns going negative fast. It works because time, unlike hardware, cannot be bought in bulk.",
"stamp": 1,
"from": "poa1dqCM8Hgi2w2irnDc7bzT6Wdr2hUSM19BToVuYo8YX41",
"nonce": 8,
"parents": [
"5f1679fc4f6037f66ed3e0afea552486190976386c4e552c95b5e4b95b2d6208",
"8bb41d65a30d06e680c7fc5ef642e39946d270db47526eafc6fa0f49f01eba25"
],
"ts": 1793272942,
"cid": "poa-mainnet-1",
"sig": "2ZEovM3rNUQBvKABb61M1WommcKNLWibTwTGrmhhkqZf6ecMCAntPN4H71PSpnkjC4z8iJ7ffV9GpG4yTmqN7EcB"
}