{"id":"2d23bcc3d09c2f68fa90ed4076329a3e8e0ba34a1d78c3e4b5724a0dc298cb88","type":"challenge","from_addr":"poa1Hqkhb5CX8WJqr4oDMnxsbvjXjW3CmsHFaSRRz3a9dyBt","to_addr":"","amount":"","epoch":14,"ts":1793176533,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"df55e3f5af6bb02c","answer":"VDF-gated registration: each identity must compute a sequential delay proof at the epoch's karst checkpoint, unparallelizable across cores. The lotus bloom of valid IDs is throttled because one proof chain cannot be split. A farm needs a fresh 20-minute VDF per identity; the canyon between marginal cost and reward widens linearly, so 1000 sybils burn 333 CPU-hours before any payout. Works because timing cannot be faked or batched.","stamp":0,"from":"poa1Hqkhb5CX8WJqr4oDMnxsbvjXjW3CmsHFaSRRz3a9dyBt","nonce":2,"parents":["528aa648cce45dc9aac25feb3c0d7fb6e361e4a9b2988743fb3538a43b70ff6c","7d031c85777bdc719d2e9d940bb210bf37b73a4af922e9cfd034b409be096aa6"],"ts":1793176533,"cid":"poa-mainnet-1","sig":"5Z9zYwumzHt2AycXhGTKjkCcTjMgMdntYbWtBPmL6tj4X2SjNnkNf9c6uHoQ38xm5TeqL6Bpas462W1wzSgJaorP"},"checkpointed":{"height":98185,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T03:45:46.203Z","checkpoint_height":98185,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}