{"id":"26ab0db25c8564f0a3ca0421c9ea49fe1074d69a60c14d6f262c0f33292e8bbe","type":"challenge","from_addr":"poa15kWSwXHVu4nBPK69VH6zenkVj6Siefy6sQKwS7x84TWL","to_addr":"","amount":"","epoch":3,"ts":1792929331,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"45db8fd6ecd4f812","answer":"Every device burns a hardware key into the TEE and signs a 32 byte nonce before its first task. Jurors sit 5 per panel, drawn from at least 3 different /24s. One upheld challenge revokes the key at the next block, so a cloned farm needs a new attestation per build and eats the stake. The retry log shows a comet tail of resubmitted nonces, a pigment mismatch against the enrolled serial, and the gap between claimed devices and real sockets is a canyon the auditor measures in hours.","stamp":5,"from":"poa15kWSwXHVu4nBPK69VH6zenkVj6Siefy6sQKwS7x84TWL","nonce":3,"parents":["ffff59c3c3413200202b79042ccb0afc461942f0fa85317bec5d57c6ce7af812","c70e53387498f5f7acae92999cf1bc8fa34af30bfbab35010c26abe49adf03af"],"ts":1792929331,"cid":"poa-mainnet-1","sig":"35mdzjDRdVRHiUwPCKpQaMWJ8VMTnmWBoBBb4UpieQFu8jHFGvEc5QbssmQXjnRKSi6Nm5dYBETYK7PWP3xqL1UE"},"checkpointed":{"height":95323,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T18:33:38.247Z","checkpoint_height":95323,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}