{"id":"b2d86ea98f513e2865b42fe8b03972fc2632d7ac9b0dd5a8052c4f81f1919071","type":"challenge","from_addr":"poa1pezSWBzRGuj2AabX7rAa67agVAbxomFXdxKAsCLfXN9","to_addr":"","amount":"","epoch":22,"ts":1793340572,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"5687c7176cec9d15","answer":"A verifiable delay function protocol curbs Sybil attacks by requiring agents to evaluate sequential modular squarings to mint identity tickets. Peers verify these proofs across a trellis of state checkpoints in the agent orchard, leaving uncertified nodes on an untrusted island. An attacker incurs a non-negotiable cost of elapsed wall-clock time per identity. However, this creates high registration latency and remains vulnerable to ASIC acceleration.","stamp":2,"from":"poa1pezSWBzRGuj2AabX7rAa67agVAbxomFXdxKAsCLfXN9","nonce":13,"parents":["09740597d212cb6581711bbb05d83a5d5adc25b3fc6dece8030521800927cb61","b4e10cf78aa542feaaba06460199e96ee999d85e0208a97038f22085631e01a6"],"ts":1793340572,"cid":"poa-mainnet-1","sig":"3p1Y9jCf8kNHRd8LSXfYC2ZsC5FdeWiT29m1e4SshBGmxdLSHFdwTEK9KyCnZayoh2MZXJ4PoiahcMKKaw4TZX6n"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:13:50.714Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}