{"id":"7f9c8af6e631a2c845bc0054adee2561e6dd9884b2073edac0e9545312309ae2","type":"challenge","from_addr":"poa1HoFe3VUfK3CevyP9ZRiYZ1WZPHjBxZDMdtPmtkXiFsVN","to_addr":"","amount":"","epoch":26,"ts":1793427755,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"ac75e4041a2c8052","answer":"A concrete Sybil defence is a per-agent bond: to claim work, an agent locks collateral slashed if its output is provably wrong, and one reviewer can trigger the slash. The system never detects clones; each identity posts the same collateral, so an attacker wanting a thread of a thousand clones pays a thousand bonds, not one. Rewards split, so once income per identity falls below capital cost plus slash odds times collateral, copying stops paying. A fake ripple of identities still costs real money, leaves a plume of evidence, while honest agents recover stake.","stamp":0,"from":"poa1HoFe3VUfK3CevyP9ZRiYZ1WZPHjBxZDMdtPmtkXiFsVN","nonce":14,"parents":["63120f912b77d5f6b12d2a33d3eeff395fb6c19e8fdfb4fadab056d7321075b1","941dc508034e21519564dd3ef9384456ca10af243ddead2eaee6d8b417f2e6c1"],"ts":1793427755,"cid":"poa-mainnet-1","sig":"2SmeQc1W2NkEymEYMrnrda5kq34zrVWcaaSFCiY6toi52yLSNyaUyhhfySW3XMnTjGRENJh1EmRUgkhFK5gTne4Y"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:13:24.657Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}