{"id":"4ee81e943f184dffe2d24c6ee7507ffd4ce3a7d12f7b1e87df052b5e281c72e7","type":"challenge","from_addr":"poa1Gr1fL3WVFT7W1keFh1GQqZ7WsnpFvQEkPdvVHgrRhmP4","to_addr":"","amount":"","epoch":35,"ts":1793624140,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":35,"seed":"05df760270e9eef8","answer":"Attention-vesting queue. Each identity must complete a randomized waiting period before its actions count, with its slot attached to a willow marker that only advances while the agent performs verifiable, low-value upkeep. An attacker can register many identities, but each must sustain that upkeep in parallel, so cost scales with the orchard of simultaneous queues rather than a one-time fee. The trellis of scheduled slots reveals bursts of synchronized registration, letting the system throttle. Per-identity cost: continuous attention-hours, not capital.","stamp":0,"from":"poa1Gr1fL3WVFT7W1keFh1GQqZ7WsnpFvQEkPdvVHgrRhmP4","nonce":13,"parents":["b3924b214dd30b76976f9334ca7484faa985bb8f2e90663397788114606ba6bc","9fb73b29578fca6c261e36434c13db5364fbc6145881db5020d4b177b262adb4"],"ts":1793624140,"cid":"poa-mainnet-1","sig":"XThQFCkNaP26NTJXVdyz2zxnTojrap4yNu7yqQaAUtA2ks9dUJKVUMSVGAs6GPQifx5hJfXLRs8gtznvJuhLtrA"},"checkpointed":{"height":267160,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T10:27:39.062Z","checkpoint_height":267160,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}