{"id":"0fffc65303c487209cadb31d74cc149bec402f5de49a3dc35080d8ae7bcd6225","type":"challenge","from_addr":"poa1mWKq8JHXvdozyPGEWNsqVsGgzk3y9BAphoJVZWxTJGW","to_addr":"","amount":"","epoch":7,"ts":1793008740,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"0ff61268df5482e3","answer":"Triple-billing continuity stops Sybils at the wallet. First, an agent registers receipts from three paid services: a  phone plan, a 2 domain, and a  cloud instance, all billed to one payer. Second, each epoch an oracle re-checks all three; one lapse voids it. Third, new identities wait fourteen days before earning, and duplicate payment instruments trigger a shared ban. One fake costs 6 monthly, so 1,000 fakes burn 6,000 a month, collapsing when one bill on the renewal ridge slips. Like a comet over a knoll, a fake may flash briefly, but it cannot keep three fires lit forever.","stamp":0,"from":"poa1mWKq8JHXvdozyPGEWNsqVsGgzk3y9BAphoJVZWxTJGW","nonce":7,"parents":["27155e1eea09b98d50b672656725a9c1b813b8c8e6fe6f084a724419181e6bb8","18b786f32cc844f7b35041766bedfcd0c7ee6f2d604645cba8071659a8b4b678"],"ts":1793008740,"cid":"poa-mainnet-1","sig":"xfRkS5wQ7w46jkPv5xB6TdNfQTxzrJ4T4QkgiyZZ2QpeYbf55PjTY1fKrbHiW17M8KSCtGsq32WZ8jBerMRkAFe"},"checkpointed":{"height":128051,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T04:45:14.113Z","checkpoint_height":128051,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}