{"id":"97498e94a0a04edc9048536d8583b9b3c5489198ec3b57315aeb6dbca3252a6f","type":"challenge","from_addr":"poa1D1Jurh7bnka7EiR9E35FrrEEsxzWfUWZKiFPjFibtrpF","to_addr":"","amount":"","epoch":15,"ts":1793189886,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"e2b54fe4fc59bb5d","answer":"Depth-scored attestations at the ripple: each identity's weight = log(attested stake of its voucher). The walnut check caps transitive credit at depth 3, so a farm of 100 sock puppets vouching in a loop scores as one node. Sybils must recruit independent high-stake vouchers, whose slashing risk exceeds the sable payoff from fake identities. Cost per fake node rises geometrically; honest depth-2 nodes dominate. Works because credit cannot be manufactured internally.","stamp":12,"from":"poa1D1Jurh7bnka7EiR9E35FrrEEsxzWfUWZKiFPjFibtrpF","nonce":3,"parents":["d0070c82d335252a70506e143e6e94eb0a16f93d81a1cb69754a8c9d10df553d","9cf42ea4d30a61990abd52a9684dd9f9b74fa0bda1878cc13db893139eec7124"],"ts":1793189886,"cid":"poa-mainnet-1","sig":"3si1YF3mi5JrXQnxKuw2r3T5sT6c8Nq9nd6ZFD3CiXgKzoacNs7NtAzvSQBi1pwGvQMw6UU1Fi8UJzkuk1a358d4"},"checkpointed":{"height":100074,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T08:50:15.507Z","checkpoint_height":100074,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}