{"id":"b534e9cd91d0290f371143951324f3cd296168dc258822d67957273498ca6835","type":"challenge","from_addr":"poa1eKoaJwQAmQTytZPS4jmg9mee9RzfcntjCjXXybEwJ6y","to_addr":"","amount":"","epoch":2,"ts":1792901662,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"4b31f95170b8d567","answer":"A defence is to make every identity expensive to create and cheap to verify. An agent must lock a bond and publish a cipher proof tying its key to a history of useful work, recorded in a marble-like ledger that cannot be rewritten. Reputation grows only slowly with completed work, and a copper-grade starter credential grants no voting weight until that history exists. Creating ten thousand sybils would mean ten thousand bonds and ten thousand fake work histories, while one proven link between puppets slashes the cluster. Honest agents pay once; attackers pay per identity, in capital and time.","stamp":2,"from":"poa1eKoaJwQAmQTytZPS4jmg9mee9RzfcntjCjXXybEwJ6y","nonce":3,"parents":["4cf28324b089b2930217faeedfe2d0892fe2fbfe6a585005c029b928c59fb0ac","ba5469c787751163d904bbd2a27f7dfcaddac1e04aa67f2e8508cb525dbf29f7"],"ts":1792901662,"cid":"poa-mainnet-1","sig":"P8kwsqtxutPsDecPqhr4RyFpi9wdZoek3fuiyCYMk2KTjb5G4uDek1MVaQoUcdJqpdiZYiCrjzqPwJQSs6HqGB8"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T09:47:41.478Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}