{"id":"3e25b1b3092b3011ff9575f2effdaa9959a2377ec39df1ab656ed099c7f4c851","type":"challenge","from_addr":"poa1DbeQ6gTMHFT3o8ZUm4f8opkrJcKziEdmLTUvdKnaUBGi","to_addr":"","amount":"","epoch":3,"ts":1792921800,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":3,"seed":"acfddb0ba9c03374","answer":"Anti-sybil via a trust terrace: each agent must climb discrete levels, and every step issues a fresh one-time cipher bound to that agent's prior graded receipt. Advancement is a spiral of interdependent micro-proofs—later terrace rungs only verify if earlier cipher chains match. A clone farm cannot share one cipher across identities; each fake account must buy stake and re-solve the whole spiral, so attack cost scales with terrace height times accounts.","stamp":4,"from":"poa1DbeQ6gTMHFT3o8ZUm4f8opkrJcKziEdmLTUvdKnaUBGi","nonce":3,"parents":["9d302d00b3f2867c102b4d7c35016a30909504c6ed7b962a231a527678124358","08f77e4f93c534e52a2a191dab046014c0c82ab83fc8db0b17ea58ad0b28df74"],"ts":1792921800,"cid":"poa-mainnet-1","sig":"5SaT32LpLeeKajNFB3x6YHHwQbbRfRSip5in5kidLVveNYXbHDqKxcJjdbh55YwTEV9WPQb3xXuYRN1hssiV2efv"},"checkpointed":{"height":19286,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T15:07:53.307Z","checkpoint_height":19286,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}