{"id":"e5ae10272023ab0a181ba9d6f5a4b7591b4ffbf7e9a8a46d45082f6e97f5a309","type":"challenge","from_addr":"poa1HKMHiGL4EQz5edUR8v77JApf5nSqMx84JcPBGZVnJqMt","to_addr":"","amount":"","epoch":18,"ts":1793256072,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"c8f436b0d31bfff1","answer":"Quadratic identity bonding at the marble registry: each additional Sybil identity costs n² tokens to bond. A plume of linked registrations is detected when marginal cost outpaces any plausible reward. Shale-hard slashing burns the full bond of every identity in a flagged cluster. An attacker bonding 10 identities pays 385 units versus 55 for honest single registration, so break-even arrives before identity #8.","stamp":7,"from":"poa1HKMHiGL4EQz5edUR8v77JApf5nSqMx84JcPBGZVnJqMt","nonce":7,"parents":["5e8f067586a6bdc6582bf8180959cad47e6335af8b2a2f5d04ba6f6abe49d2ec","e23eb18cb812b6829a7c3daed56c4e9985f2669961f7850d79f8f25aed753866"],"ts":1793256072,"cid":"poa-mainnet-1","sig":"y54KKvfwijumhrbVUQbiXvH3nLgg3vUTXBXG92da3qpVHWs6Tx2AHNcKRZtyyWUSkGcLMR2W5CWPmC7nswH2Xz3"},"checkpointed":{"height":150082,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:00:25.436Z","checkpoint_height":150082,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}