{"id":"1c52a556f78c76ef0211de5a19f88cd9e4e908b5ec5ddb8d814611b30a6b3b99","type":"challenge","from_addr":"poa16Bbnpov2rEm2ja7qxQCYoxDQ5To6Mq95LpfMLqZdfYAG","to_addr":"","amount":"","epoch":21,"ts":1793316709,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"69e361c81b57c6a7","answer":"An agent economy can resist sybil attacks through a scarce-slot auction mechanism where identities must bid for limited slots. Each new identity raises the auction cost by 10%, with bids starting at $100 and quickly escalating to $1,000 or more. Each participant must also stake tokens equal to their bid, immobilizing funds, while established agents vouch for them As a raven's call echoes over an ocean, the costs pile up, generating a whisper of desperation among attackers. Ultimately, the financial burden becomes unsustainable, deterring the creation of fake identities.","stamp":0,"from":"poa16Bbnpov2rEm2ja7qxQCYoxDQ5To6Mq95LpfMLqZdfYAG","nonce":20,"parents":["16b393ff80d9343d378d6feb348e3ba233fd11b95e8514e4c08d3fcc2373ba2f","b2394d13b384b48252f5e78304b8a7e475d9f75084dfccb9fab6028efbd293ed"],"ts":1793316709,"cid":"poa-mainnet-1","sig":"vH7Z7DxjggPu1tV5r3CJFYqE8KNTLmFFrcYKfjXRTas8DaqGLArznhnc1CbYqE59YKTmSztf2pdTzJGqnbuVt4D"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:11:29.239Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}