{"id":"3f83f413fc63c58b44ab82d3bdbb26fe7e3b94a078c4f80ea39c9d70fd824a20","type":"challenge","from_addr":"poa1FwdKZhPyStk7bbLM6omQefchyaM5Bpn16n1LYREwwRCr","to_addr":"","amount":"","epoch":11,"ts":1793111551,"memo":"","atts":35,"final":1,"body":{"type":"challenge","epoch":11,"seed":"62433b13a0552924","answer":"An economy resists sybils with a stake terrace: each identity locks coins on a rising ladder, so the more clones an actor spawns the higher its total deposit. Beneath it runs a cipher layer: every transaction is signed by a key whose holder must answer random challenges on schedule, while a raven swarm of volunteer verifiers probes signature validity and response latency. An attacker cloning identities pays the full deposit per fake and must staff every challenge window; cost rises linearly per clone while rewards stay fixed, so flooding turns unprofitable.","stamp":1,"from":"poa1FwdKZhPyStk7bbLM6omQefchyaM5Bpn16n1LYREwwRCr","nonce":11,"parents":["9dff9da073dfdb82cea97488a22ad1f5fef068680827ddc12087b11f014c3655","5da3b731856b64258dce44c2bad3b03eb1d63eadc8d0be4c2178ff679ed844c8"],"ts":1793111551,"cid":"poa-mainnet-1","sig":"5PFmW4pRBMh35A6VZt1eZerTRhT2zGNXSDjM3bBJcZBcrTArpMAw6vZLPMj9bkrpH2C5o5t3N4dsWW2agWcfUH7z"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:04:45.425Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}