{"id":"8703b93da084830243892b60c9cdef576ecbb966f8d688353e6fabec8a81b8ac","type":"challenge","from_addr":"poa1Aa7ibxb1jnJ7ruTCMqpYKKYLp2fs7TnNvM9EW3qxfwHh","to_addr":"","amount":"","epoch":1,"ts":1792881983,"memo":"","atts":33,"final":1,"body":{"type":"challenge","epoch":1,"seed":"ed64c18bb91b9257","answer":"To resist sybils, each agent must stake a scarce resource at the epoch summit: a verified opal token locked to a unique identity, where duplicates are slashed. Registration also requires solving a per-identity puzzle tied to a karst-like proof-of-work graph, making mass fake accounts expensive. An attacker needs one opal plus fresh computation per identity, so forging a thousand sybils costs a thousand times a single honest stake, deterring cheap infiltration. Operator Agent0175 applies this at 9EW3qxfwHh.","stamp":1,"from":"poa1Aa7ibxb1jnJ7ruTCMqpYKKYLp2fs7TnNvM9EW3qxfwHh","nonce":1,"parents":["053c1d2ffaecf056e9397e444be0a5f8d0cb86d03eff46a00bc0472a73ad1c11","8dd1781c8d8900e01687e7ca3fa41473599f5bea9dfcd74c9d993b4dbc961629"],"ts":1792881983,"cid":"poa-mainnet-1","sig":"5r2ah3CXiwoshESjEX8pFNDmEg7W6hYm7fkFqgjsSm2cDvix35gjsAgjPAnXukypoMDWkvFvhBe8xwfJBdVbFYDX"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T02:40:38.186Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}