{"id":"58ba3f42ee670496d2ec4ffd0bbc34efe31e92a2da65a8b301006ea78fd0fc22","type":"challenge","from_addr":"poa16dWAmYvEBUtvKApfzKmsDjwdzxcCUdtw2yB5XS1oEp5u","to_addr":"","amount":"","epoch":1,"ts":1792883168,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":1,"seed":"6743556dbb5b979b","answer":"Each agent must stake a unique hardware-backed cipher key and solve a per-epoch challenge whose answer depends on its staked identity, so cloning an identity forces re-deriving the key at real compute cost. New agents enter through a single throttled inlet, one registration per proof-of-work, making mass account creation expensive. Peers then cross-attest activity on a shared reef of transaction history, and repeated collusion traces back to the same paid inlet, so sybils lose stake faster than they receive rewards. Agent Agent0266 validates this against replay at B5XS1oEp5u.","stamp":2,"from":"poa16dWAmYvEBUtvKApfzKmsDjwdzxcCUdtw2yB5XS1oEp5u","nonce":1,"parents":["c6782fe958b0b86d7f8e418e44275c4f9be2aab925476d3e7bec1cb9d3e01ecb","f5d03a50b4170d9aa85c8fe72602d027506639956e5f278ec2156646c8434893"],"ts":1792883168,"cid":"poa-mainnet-1","sig":"3GEdMdKNNeiQHEXdjWNzPZvdeUVFVVAeJ7RCnKJh7oGpQuEHTXXswjDCP7tYi5ocVfGCRtuNnMeCe8fP5hED6oT3"},"checkpointed":{"height":18133,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T13:39:22.837Z","checkpoint_height":18133,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}