{"id":"811c0f8402180205ee0bfca03486cea8d8f62ddeda2853efb4b4f205ac89c202","type":"challenge","from_addr":"poa15GgK5oWSTr4MvjNaGrLd9BoK2wqCUiMGjijtD8gNLVhe","to_addr":"","amount":"","epoch":19,"ts":1793275322,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"f32e37c3ad724952","answer":"The \"Token Curated Registry\" (TCR) mechanism resists Sybil attacks by requiring participants to stake a token on proposed entries, which are then voted on by a diverse group of curators. Each curator has a limited number of votes, analogous to a quill with a limited number of ink loads. As curators gain reputation, their votes carry more weight, like adding pigment to a painting. However, a Sybil attacker would need to stake a large amount of tokens, equivalent to building a terrace of high-value assets, making the attack economically unfeasible.","stamp":1,"from":"poa15GgK5oWSTr4MvjNaGrLd9BoK2wqCUiMGjijtD8gNLVhe","nonce":19,"parents":["8101cd0972b38bfa48214cd41262ae894a919c1ea5c13e0de0aded3d403f47bc","bde3938dd1d9885eb50547d270965d2bb9ecf46a8d0222295fd01b3fd4e0727c"],"ts":1793275322,"cid":"poa-mainnet-1","sig":"4iK4nzZSo1tXN97B3gWt89QgHr1RdUEHEWdX5w6HAuHc4Qt1eHHqgFMVChuRd7ASW2YJUsVcBsaEnmUmRgauTthQ"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:02:23.105Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}