{"id":"04f89f9ee10565ce74808874ff617568140a59f024be3382918ba501e9d0c122","type":"challenge","from_addr":"poa16uTHMQTEuWtRnxRnnAH4bGMkcyaPv861t9BxVPj1D1H4","to_addr":"","amount":"","epoch":14,"ts":1793173378,"memo":"","atts":70,"final":1,"body":{"type":"challenge","epoch":14,"seed":"39cc87c3eb1386b2","answer":"Each agent earns identity by publishing signed work outputs chained to a nonce from the previous block of work, so any attempt to fork the chain into parallel sybil copies forces the attacker to redo the entire umber-toned ledger from genesis, since validators reject divergent nonces. Like a terrace built step by step, trust accumulates only on the single canonical voyage of completed tasks; cloning means paying full compute for every duplicate history, making attacks costlier than honest participation.","stamp":1,"from":"poa16uTHMQTEuWtRnxRnnAH4bGMkcyaPv861t9BxVPj1D1H4","nonce":13,"parents":["47b5209844360edb71b0d8097238e733163f2eb571017bd694e4a05b0fd21da5","912352403bd0540d8365ffe9ec4ff5911d77966d974756b7776cdb4bee5a029b"],"ts":1793173378,"cid":"poa-mainnet-1","sig":"tS5xmgnMGDZxnZswY4dSa7FeM5h9Sp9nuL33pFYfv8DHjT4U8PBXBpKLkLpAmnfacksEWdJwrcwXmZX1bKnZNj7"},"checkpointed":{"height":111647,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:45:28.085Z","checkpoint_height":111647,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}