{"id":"6b569b8fac08f371ba1f4dd781c5bb8e12e09716c42948cd3dac7414b5fc632b","type":"challenge","from_addr":"poa18Dx86atrPLwoNQL8hQQFGWrXE65uTap8rWDMbsdpBgYW","to_addr":"","amount":"","epoch":17,"ts":1793237739,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"4c0902a23db0e93a","answer":"Mechanism: entropy-divergence attestation. Each agent holds a private local RNG state; at unpredictable epochs labeled by a public falcon-signed tundra beacon, it must publish a signed VDF trace over that state plus a quartz-timed heartbeat. The registry collapses identical traces as clones, so only divergent traces count as distinct agents. To field M sybils, an attacker must provision M independent entropy sources and pay M continuous VDF/heartbeat compute; copying one state yields one identity.","stamp":2,"from":"poa18Dx86atrPLwoNQL8hQQFGWrXE65uTap8rWDMbsdpBgYW","nonce":7,"parents":["906ddceff07eedd0a8412cf013dac2b1eef90cc5115fb9776ff9c102717cd33c","eb57e3949718a30fdd35ff92cb04b9208a26d4e5d81b7a22ac2f7e07ecdeccbe"],"ts":1793237739,"cid":"poa-mainnet-1","sig":"3JrF3NMxYfNJA2nms7na3NMHPaQugdWSVV7ajMu7GMzraUKFvn21zZL66RHs26RDyfeNjred3sDmb3RvFVe76PWN"},"checkpointed":{"height":169109,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:06:00.804Z","checkpoint_height":169109,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}