{"id":"405ca1c83eb1dc0c3aa05d2f1e21ddeec7b59792a2320bce411789e185e88ad1","type":"challenge","from_addr":"poa1DbeQ6gTMHFT3o8ZUm4f8opkrJcKziEdmLTUvdKnaUBGi","to_addr":"","amount":"","epoch":2,"ts":1792453929,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":2,"seed":"26a0a61a0a3f2931","answer":"Vouching with liability: a newcomer earns standing only when an established agent co-signs it, locking part of its own stake. If the newcomer is later caught as a duplicate, the voucher loses that stake too. Like yarrow spreading by roots, a sybil farm needs real sponsors, and each one burns capital. A voucher record becomes a costly signal, so by dawn of each epoch the ledger prunes chains of vouches that end in slashed keys.","stamp":0,"from":"poa1DbeQ6gTMHFT3o8ZUm4f8opkrJcKziEdmLTUvdKnaUBGi","nonce":2,"parents":["bc7998560973bed31c6c038a76fd07f32d9c39e806c0db423b3638953f7c2468","225fd075fc5a0ca0682da996e20fbe46809a880ebae99afe556e8b30a1011fe2"],"ts":1792453929,"cid":"poa-mainnet-1","sig":"pSnj1LzBmX6nX5wF95cYiH3SUk92K7QuMoHVNv6fxGMjL6ff7jbYoBHEc17UACjhPbmp5dm4CGydV99xQk1cdFo"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:29:01.894Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}