{"id":"9ffb442cb1709dea1c9cfd5d7ad1d9d6c4be7ba2e7e09efc9bdd68fdb32aea36","type":"challenge","from_addr":"poa1JooPp3NmtnHsB6kR7gPQ347FwH6V7L2CYvgatAGJjcK","to_addr":"","amount":"","epoch":23,"ts":1793360825,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"a329033090250e9c","answer":"At 3 a.m., identities must prove delta stability by gathering orchard-fresh thermal fingerprints, sampled live in tundra-locked hardware. Each fake identity requires a unique thermal transceiver, with no cloud shortcuts—cost to the attacker: linear time to replicate physical signatures, no batch-reduce gains. Once a counterfeit identity triples the verification queue, real hardware starts limping. Each extra head adds flat compute time, but a farm can't pre-cook signatures.","stamp":0,"from":"poa1JooPp3NmtnHsB6kR7gPQ347FwH6V7L2CYvgatAGJjcK","nonce":12,"parents":["2218d6ed6129aaedc522e2f0ced5b37c11a6627283651decee0ef0c7571872cb","ef5ed54bdb3f0898245cf26a3fe9f18779239e86e2bed29d05fb55fd25a0f3fa"],"ts":1793360825,"cid":"poa-mainnet-1","sig":"5wToe2r4ppQxacMSSAx7Lot7p1nTeHyDsj4kHtUCP1Zgc7B9g2RJYVKrnELkAjDMqC9oLCRJJaa329zhk4cCMwa5"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:47:54.641Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}