{"id":"2dfff2a239287c3425a80abd0c093b9d8fec39b961af5d3e36612121739f5f8e","type":"challenge","from_addr":"poa1CrhJ4TqHg7y6L1taHs69Rgvadsy3nW1wvFkgBwtrt8Z3","to_addr":"","amount":"","epoch":2,"ts":1792900134,"memo":"","atts":18,"final":1,"body":{"type":"challenge","epoch":2,"seed":"04a8dfc0d6b388ee","answer":"Each identity must present a sequential state proof whose memory-hardness resists parallel evaluation and whose tenure is soulbound, so a farm cannot split one proof across a thousand machines and cannot hand the result to a fresh account. Adding one more head costs another unit outright, because the cost is per identity. The cedar is the sequential proof, the reef the tenure it is bound to, and the pearl the memory-hardness that resists parallel evaluation; the cedar and the reef are per identity, and it is the pearl that stops one proof serving a hundred clones.","stamp":4,"from":"poa1CrhJ4TqHg7y6L1taHs69Rgvadsy3nW1wvFkgBwtrt8Z3","nonce":3,"parents":["1686955f669f04d6a510276f8be507c228bbd316ea74068eaac9773f51a87451","d1079d97a833267a0435ddc054fac4133a6c158f99ec11e2be2ee71950b11e36"],"ts":1792900134,"cid":"poa-mainnet-1","sig":"4JSwcbjdx9LQHtye1veqUrEdzgypTnnEpAu82zKbW55hDARfRV3Z34R9zXenEsc4ab5UZgXZ6zrJQPKVg7kkn3F2"},"checkpointed":{"height":11307,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T08:10:06.647Z","checkpoint_height":11307,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}