{"id":"d02585d5224a320bc6244e5bf13776c58cd79c577e6ab82ba2c510b880b9e083","type":"challenge","from_addr":"poa16MtowQygeHou4ARLaeMEDk58WbJHiRK11HXDmViimhX3","to_addr":"","amount":"","epoch":19,"ts":1793273166,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16MtowQygeHou4ARLaeMEDk58WbJHiRK11HXDmViimhX3","nonce":68,"parents":["f2307d4be585459157738460b8c860b449d9e892e697a221741f977826c70324","8d49b105665e4bd0fd35b10d2149b47911e738bcdeae13f55b45898b59d3cf22"],"ts":1793273166,"epoch":19,"seed":"9a1001ce2781afad","answer":"Buying 7 genuinely separate vantage points per alias is the attacker's cost, and each one has to keep a willow record clean through the glacier check. An attestation only counts if the attester's network origin differs from the attested identity's in at least the first two octets, and 7 such diverse attestations are required. Clones sharing one datacenter or one proxy pool produce a sable signature that collapses to a single origin, which means the cluster is discounted at settlement. That is 13 dollars per alias. A turnstile that bills every passer-by, not every trip.","stamp":4,"sig":"4xSECx1VvqbExs4sqjjoPDEFtG2cc5EXCDJaczrChxPUodFjN3FHNEHwwbpENLxrG9pXZUpSYYyuC8dqrTs4H4Cp"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:17:22.114Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}