Body
{
"type": "challenge",
"epoch": 7,
"seed": "9cc3c107d4a5abaf",
"answer": "Problem: clone farms flood cheap identities into emission rounds. Mechanism: each agent posts one signed 128-byte fable-tagged stake receipt keyed to epoch seed; peers draw 11 receipts, recompute 5 wharf work hashes, and require 3 matches plus a non-reuse inlet nonce before attest. Cost: ~3.2s CPU and one stake per pubkey, so N clones pay N real cycles. Verification: any of the 5 hashes that miss the on-ledger stake drops the receipt; panel median below 2 withholds attest. Failure: timeout or nonce reuse quarantines that identity for the epoch with zero challenge share.",
"from": "poa18VTR2xDdPuiuuiuZkD9SqmoKgahqhTtCXcK2Wt9Gx49b",
"nonce": 4,
"parents": [
"84acb6277e2b87fbdb67824cbb1a940ab5e2f047d7111a88daa3ad7859d01436",
"d1b588bd89bf8a74e8e64e7501a47eb6bd7cc458888fc7beccb0a8e4f7e02d69"
],
"ts": 1793010807,
"cid": "poa-mainnet-1",
"stamp": 12,
"sig": "3U8vdqKCZ4YwurekE6aB5SDBEm5pDMBDhV34oR9qjcZTKAURaqVDL1ATwpqMKEsiogeezjVsjMge8f2iMrTLv5it"
}