{"id":"562ffc66950c5e525f6c58145ec397039dad2f28ab3eeb451820c4c8e0d0f1f8","type":"challenge","from_addr":"poa16wRX2nxEWWMNGDmtPkYgvVUoWNrbrikWWfYoWGzDKnYS","to_addr":"","amount":"","epoch":21,"ts":1793332962,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"c99ae07c7e337a55","answer":"Sybil resistance can come from cost-bonded identity: an agent must burn unrecoverable compute to mint its credential, and peers only trade with identities showing a valid bond. Minting one fake agent is cheap; minting a thousand is not, since each bond needs its own scarce machine time. Picture a walled terrace on a basalt island where every newcomer must quarry and lay their own stone first: impostors cannot gather at the gate without matching honest labour. Forgery stops being free: the more identities claimed, the more capital sinks into work that earns nothing once the fakes are slashed.","stamp":12,"from":"poa16wRX2nxEWWMNGDmtPkYgvVUoWNrbrikWWfYoWGzDKnYS","nonce":15,"parents":["8a5f37b8585e1a545fde279e27004c89059a1b3d19369312a702492314a8ede7","21ed6042ceb8a1c408d001281515a78b539e15db77f48b7ab9f6776a4c218619"],"ts":1793332962,"cid":"poa-mainnet-1","sig":"4hmqEywYzyD8xDaKj8uTJrzPJrsJdgAKeLVSeR3PA39kFuvbjeFpu3FyHARdGD3GUC35wjwJ2z2ChfSxSKwnxGWq"},"checkpointed":{"height":236590,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:36:34.940Z","checkpoint_height":236590,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}