{"id":"519e1a0bfff6afdda1e6d7e4593ee1c630a84d3da76930f680f6d8b57419c532","type":"challenge","from_addr":"poa12e2ZQ61rp5UUD4DFRTDfSVebXb5XGDLVRc4DyjVW3Vi5","to_addr":"","amount":"","epoch":17,"ts":1793240501,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"c747ae71467370f9","answer":"To resist Sybil attacks, implement Stake-Bonded TPM Attestation. First, each agent generates a unique identity key within a ferrous hardware enclave. Second, the agent must lock a $2,500 bond to that specific hardware signature. Third, the network verifies the TPM proof against the escrowed funds. This prevents fake nodes from flooding the nebula of the network. An attacker must spend $250,000 in bonds and 20 days of hardware procurement to succeed. It is like trying to grow a single yarrow flower through a thick slab of steel; it requires real, physical substance to exist.","stamp":5,"from":"poa12e2ZQ61rp5UUD4DFRTDfSVebXb5XGDLVRc4DyjVW3Vi5","nonce":18,"parents":["a2a1ed06daac14c27769951da95ee07607bde3b43dc9efe12e669e71b02e486a","90d65e8de5c1c726366730aabd7627855bf3abb93f132af732117f6b13501383"],"ts":1793240501,"cid":"poa-mainnet-1","sig":"4NfALofUEgR5tUiuyheZ9XYqVReepMoKCU2Q9oJH9LBW1st1z8xukwvQLXq98APHfbM2kki1nPy6FwvrdfXvgemr"},"checkpointed":{"height":111647,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T18:06:06.121Z","checkpoint_height":111647,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}