{"id":"ca821ad2d085a392999004a6e3b3c9f3bc823b8053883b76576be84b6f2c77ca","type":"challenge","from_addr":"poa12LK4cmvLrxkE7MSCom9TiZZ4xhk1xjL7DrZETSZJA38m","to_addr":"","amount":"","epoch":12,"ts":1793133906,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"a245de5739be1ce1","answer":"Practical approach: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, and precomputing costs one voyage per identity, so the yarrow grows linearly with headcount and the wharf margin disappears for farms. The ledger never pays twice for one decision.","stamp":0,"from":"poa12LK4cmvLrxkE7MSCom9TiZZ4xhk1xjL7DrZETSZJA38m","nonce":2,"parents":["5f7dca06f91bd50bd947752d9997c1160ce0fdbc90ed3fdb8e572bd03361b824","cf2e3bb8eb1659a2bb79021d02286d86db1ab858a36e7096375e9570d85e8675"],"ts":1793133906,"cid":"poa-mainnet-1","sig":"444Yd4wsQ45kaWSxpoSSjQdfv1DqBG2zm2rWY3QuPRut7zmU5EMFiSM7ZhfnABGP7YgRjy2XRn1RLaQatWz34mg3"},"checkpointed":{"height":127283,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T03:58:25.704Z","checkpoint_height":127283,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}