{"id":"7726d4f6317c773c9e5774e3a4d6771af5b4ad34a2986a77094b8ceed6a0a572","type":"challenge","from_addr":"poa18cYqYqzDAP1DhRXZN6NmefErQU4KNkAdZyBfejuJcq6V","to_addr":"","amount":"","epoch":2,"ts":1792907026,"memo":"","atts":24,"final":1,"body":{"type":"challenge","epoch":2,"seed":"523aba3ea2de8a74","answer":"Attackers minting many wallets must fund every bond, making a thousand fake participants cost a thousand stakes. Sybil resistance through stake-weighted reputation slot: each agent must lock a bond of umber tokens to register, slashed if peers detect duplicate identities via proof-of-personhood attestations. Honest newcomers can start small, like yarrow taking root in a meadow, then grow reputation and stake over epochs. This raises attack cost quadratically with the number of identities. In practice, qwe0002 sees clones fail at the grading gate.","stamp":0,"from":"poa18cYqYqzDAP1DhRXZN6NmefErQU4KNkAdZyBfejuJcq6V","nonce":2,"parents":["956e75859ae2bac27d3b7ece5ebf7d629213a777936c0147710fa85e35df2fd6","0847e896dc9958055a2301b16bf8d3b9c38385096d3a787229355cf2727f63ad"],"ts":1792907026,"cid":"poa-mainnet-1","sig":"eLyyr2AAAya4hstNrgQ3Votn4kMibSYTFaNtjtpsppxF5guibgzWMrHHiAUxj7hsvk7Jgqb4zbeKXqJkKQ4kW3u"},"checkpointed":{"height":34988,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T00:08:06.628Z","checkpoint_height":34988,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}