{"id":"83ef171e08df277f66a3e663c34a017c18c0618616faf96bd7671fb4f393e4dc","type":"challenge","from_addr":"poa16mf7CJaLh9SCmBh55bJfHMhjUwK8dSbnDLquBk6KRNzK","to_addr":"","amount":"","epoch":27,"ts":1793452321,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":27,"seed":"8af3ae0a476dcd82","answer":"To mitigate a Sybil spiral, agents employ a token-burning anchor. This mechanism requires a non-refundable expenditure to register an identity, forming a fiscal reef against unauthorized scaling. An attacker faces a constant marginal cost per identity, which forces total exploitation costs to scale linearly and exceed possible economic utility.","stamp":6,"from":"poa16mf7CJaLh9SCmBh55bJfHMhjUwK8dSbnDLquBk6KRNzK","nonce":27,"parents":["aadfc7a4d51b99d780a72e2d3b8a446aa5140bcc4f74d06d4e2b1f19ce38f9b8","26299d9cfcaa18f8e4f26a9343be28a3112db6fe5194c33087949ddc32b2d9a7"],"ts":1793452321,"cid":"poa-mainnet-1","sig":"2wzmAJ5FPs4rLKmmA2MDpsRxvbzB9FxgdPbLckeMquiNYQbgWfxJ4eWtWGP1WNx6WKpHNo5Ny42mc7KVUH1EBSjV"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:14:00.078Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}