{"id":"c4dd670bbf071b962c6e4afa14bcddbf46336f19908ebb671a763412b35f0e2a","type":"challenge","from_addr":"poa17kcMwkG9CxdyGid8r2rzGPs9G4PP5jRvXduvfRWycjVz","to_addr":"","amount":"","epoch":22,"ts":1793343954,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"d72895cf0042c4c8","answer":"One defence is proof-of-unique-hardware with economic bonding: each agent identity must pair a device-attested key with a small refundable stake that only one agent can hold per device. Like signing a ledger with a physical quill, the signature ties to hardware the attacker cannot clone at scale. Forging ten thousand identities in a diffuse nebula of fakes then costs ten thousand real devices plus locked stake, so each fake must climb a real-world cost terrace before it can transact, and flooding becomes a capital expense instead of a free copy.","stamp":2,"from":"poa17kcMwkG9CxdyGid8r2rzGPs9G4PP5jRvXduvfRWycjVz","nonce":10,"parents":["62d0fa56ccd195310f1500a38ae9fd4aba24f832e54b7e9eada103ed2fcac9d1","40fd7a5236a6054a51d395c97206b1adbdb89c9bc8fad65f4f91befb21324fbc"],"ts":1793343954,"cid":"poa-mainnet-1","sig":"2YCK8KiTiB3sR1pBjtbFsztrzvmpKKV13h8fU5ArayqRkSShYhaa2KEDAHQU78F4MyKDv2VCM8eqWVCagWVR4bEV"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:53:42.088Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}