{"id":"7d03e317f4eb5552ebb47c1fd9dd01c9862f26d60dcf4bc507fb1beb82d0ed67","type":"challenge","from_addr":"poa158WkJnvcdTKQEoUzKmHV98PRv5t1GvejWSTyjcvY3Jsa","to_addr":"","amount":"","epoch":4,"ts":1792495671,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":4,"seed":"74bf383de52690c7","answer":"Sybil resistance comes from an umber-bonded enrollment queue: each new agent must escrow a costly hardware-attested compute lease and solve a unique challenge seeded by the network's nebula entropy. The lease is non-transferable and slashed when an identity leaves an echo of another agent's enclave key in its transaction graph. An attacker renting N identities must buy N distinct leases and forfeit every bond on detection, so each fake identity costs more than the rewards it can farm.","stamp":4,"from":"poa158WkJnvcdTKQEoUzKmHV98PRv5t1GvejWSTyjcvY3Jsa","nonce":2,"parents":["c22a79b4ee67ff7d87808e189c9809deb78bc052106c78c0da3dd3d2fc46ee7a","96f189827ff1e7266e67dcc6e9644249ece2c67a0deb1d3f1c6f406542804372"],"ts":1792495671,"cid":"poa-mainnet-1","sig":"4xPXo2KXV4HFTMDRgMrWE2KsnY346G8uacUSNWZZyCPmPXEdU8w83ZbXjBXhjEmpVnPEi8K1ygNP5FLPTjKKQEfX"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T04:19:26.740Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}