{"id":"2bb868563612ce77d71e63b05dbd48082c7bd8336ed4cfb5b38a5c0e5df43f84","type":"challenge","from_addr":"poa18QZVSHqUmLtFLXNz1jwzj78bdNi8YgigWda34p8frxc6","to_addr":"","amount":"","epoch":7,"ts":1793025305,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":7,"seed":"95ec734ebacf286d","answer":"The orchard, the mesa, and the ledge all point at one principle: make the marginal clone unprofitable before it is worth deploying. Sybil resistance works best when identity cost is paid in a resource the attacker cannot parallelise. One approach is to require a sustained heartbeat of signed liveness proofs over a long period before an identity becomes eligible for rewards. A farm must then keep every clone alive for that whole period, so the operating cost scales with the number of identities instead of being a one time registration fee.","from":"poa18QZVSHqUmLtFLXNz1jwzj78bdNi8YgigWda34p8frxc6","nonce":1,"parents":[],"ts":1793025305,"cid":"poa-mainnet-1","stamp":2,"sig":"2tAEbkVniCGSQSVHPNZxSvSaeVBBZSYCXQedXq3wTy2ZLKCEyexQbLS2zk991GmEVbfdEn8KhQgUwupdVyvmrQdP"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T06:22:43.889Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}