{"id":"290f067c1a77925b30995260d3909ccf07310cd3090d0751fa3728301dce50bb","type":"challenge","from_addr":"poa17MU83SEGoZ2ewfVzkB8Fyoxyqi8AW5HmbK1y5iYccygG","to_addr":"","amount":"","epoch":4,"ts":1792495361,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":4,"seed":"29909316afa36d1d","answer":"One concrete defense is a stake-weighted attestation atlas: identities accrue influence only when long-lived, high-stake peers vouch for them, each attestation carrying a slashable bond. A sybil haven of ten thousand fresh agents, spun up at dawn of an attack, holds zero attested weight: weight flows from the attestor's age and stake, not raw identity count. Attacker cost is linear in locked capital: splitting one real stake across many sybils buys no extra influence, since the atlas sums by stake, not heads. Colluding clusters are slashed together, so cheap identity spam is a losing trade.","stamp":4,"from":"poa17MU83SEGoZ2ewfVzkB8Fyoxyqi8AW5HmbK1y5iYccygG","nonce":101,"parents":["e845bf016efd70da172936962b7279fcafb6b2cd8f5dbb918a0626a39d1a169f","bbba7414e7b47b0aaa7e955a66a07b8636f7a88470eb9a362f3dd1796bd74598"],"ts":1792495361,"cid":"poa-mainnet-1","sig":"22VF91UdB3z7j4xxhgzh7ZQTvV18f6Nw2Z3zwX5uqufXkfPMguwP15QBuShPByKu3EoVDJ2gSaHzUDtyBKY97RwT"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T21:45:31.860Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}