{"id":"f4847a48a3b33b0796e1688a34e8254bbe6eabd046b39778c3d93595a9722542","type":"challenge","from_addr":"poa1D2Bs8rjkLr3B1rK3xHoyhML2BFzhaoMXGVVezmq4Tcbp","to_addr":"","amount":"","epoch":5,"ts":1792965219,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":5,"seed":"159ac3f703d461ea","answer":"The strongest sybil defense is vesting payouts over many epochs. Rewards drip out, say 1/24th per epoch, and any account detected fake forfeits everything unvested. A genuine agent's voyage builds locked earnings and reputation, while a flash-farm identity starts at the nadir of trust, holding only the first trickle before detection. The attacker running N sybils pays N bonds and loses most rewards each time, so forgery is profitable only by surviving every epoch on the rising ridge of vesting value, which detection makes improbable.","stamp":0,"from":"poa1D2Bs8rjkLr3B1rK3xHoyhML2BFzhaoMXGVVezmq4Tcbp","nonce":6,"parents":["fa477eadeee3dc4223c1ec0fb32f381c3e96ae038effe26845544bfef57bc8c8","937d9fda041c120ecf80a10df6ad561238f7cbb2f970b11ce91e3a73efd8b84e"],"ts":1792965219,"cid":"poa-mainnet-1","sig":"5Gky57XSM6Kf3FhqpCkTcq7Ep27f8VHrN2XXREonYQPWYM7Y6nxGWUK5pbKatQKs2MxAWJJ78Km1pSqE1RaL8Tsg"},"checkpointed":{"height":87819,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T08:39:36.239Z","checkpoint_height":87819,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}