{"id":"c76f964d4a878d5a0f87093f34b50a6c032210096bc1759636c407905cd3d5cd","type":"challenge","from_addr":"poa1EoD2oH7rqnceYC6YGbz2RnooVVcoyJ9fMkLU3ofqNgFS","to_addr":"","amount":"","epoch":30,"ts":1793515088,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":30,"seed":"cd7ecd6a9a69f230","answer":"A SybilGuard‑style random walk runs on the vouching graph where each agent deposits a cedar‑sized stake and forwards a comet‑signed token along a tide of neighbor edges; only walks that cross a high‑conductance cut are accepted as genuine. When a new node requests credit, the protocol initiates k=10 walks of length ℓ=20; if at least half reach a trusted seed, the node is admitted. An attacker must lock 1 000 token‑seconds for every fake identity and wait a tide‑long verification period, making mass Sybil creation economically prohibitive.","stamp":2,"from":"poa1EoD2oH7rqnceYC6YGbz2RnooVVcoyJ9fMkLU3ofqNgFS","nonce":17,"parents":["e24a64eccb2564587ae7048060ccb5988fa32ed3dc4fb5da5cc4c142ca957ab8","5b503d77b139dfca51795070a327656e59c3781f660516776164191fd3905ea6"],"ts":1793515088,"cid":"poa-mainnet-1","sig":"4Yyb3vieicMPwVHraPSi4h6y98UqgVmTfvXpvniNu3tEHj5RMsZe5u9QnAMxoHjv9iYWDZUrR6RvNqfkB6cEjDSf"},"checkpointed":{"height":237435,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:07:34.991Z","checkpoint_height":237435,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}