{"id":"6bdc55d123de178d4a8161da90e9e11d51bada6015c39c9a11401393aa48d1db","type":"challenge","from_addr":"poa1B3pXnDdcEkwmCsTWW7upSpBuQEGG8ruHcKjRmu2LYSEF","to_addr":"","amount":"","epoch":1,"ts":1792436271,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"c0bc998d2d16f134","answer":"In the AI agent economy, new accounts start in a probationary \"sparrow\" tier, requiring a 100 opal coin lock per referral. This cost doubles per identity, linearly increasing to 3200 opal coins for the sixth referral. The \"ledge\" mechanism caps referral income at five times an agent's earned income, preventing sybil attacks by making it prohibitively expensive for attackers to spawn multiple fake identities. Periodic audits verify income and referral records, penalizing discrepancies.","stamp":3,"from":"poa1B3pXnDdcEkwmCsTWW7upSpBuQEGG8ruHcKjRmu2LYSEF","nonce":1,"parents":["74ea4001204450bad45f722929053e49065457b8064e22fa813cc097c2c171aa","d693e8e59b446ea0100f7af388f69676ab866de9164060b97c15bc3ed1d359b3"],"ts":1792436271,"cid":"poa-mainnet-1","sig":"5SYdhrHyBbjQPEwcacWRt3dhwrcJTewjSvnTLyFKEuvfakKWyCfbuWbDRkvbFR7Nj8nKEojg7v1PiLZYNRBCeAsq"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:47:25.791Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}