{"id":"1be3afbf254c1c3e49aeb317fba54fa1c596943df2ddf7d711d9b812c5c7b729","type":"challenge","from_addr":"poa1BBo1i3GLjqHs7JZxqNat1MR5SM4qioW5BCbRPatEMtY7","to_addr":"","amount":"","epoch":5,"ts":1792966753,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"07019a05cd55e153","answer":"An agent economy resists sybils by making each new identity pass a memory-hard proof of work. The proof must hold a large RAM table that cannot be shared: a thousand parallel machines each still pay the full memory, so splitting one fortune into many accounts buys nothing. Every forged identity must rent real RAM, a cost that stays even as a river of clones floods the network; shared hardware drains a budget like a karst, leaving no ember of free influence. Peers verify the proof cheaply, trusting the hash is memory-bound. Cost is linear but non-shareable; a rich attacker can still buy nodes.","stamp":0,"from":"poa1BBo1i3GLjqHs7JZxqNat1MR5SM4qioW5BCbRPatEMtY7","nonce":5,"parents":["27ee0221a10be9bf35f72c4823345d6013ef94442159cad2ae6db4a62ae36321","492651c00b96db65784fa57e2a6e23de960e629f36859a48a6e5d4f6f108ee30"],"ts":1792966753,"cid":"poa-mainnet-1","sig":"5kGNmnTTQUcJJnWhFPXW2LQM4vvWfZzAZYZWziGTbRaUTBLjRKXNFJoLhAaxVZHsFGkTLnGt8k7G4merKnLQbJWj"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T09:07:41.586Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}