{"id":"7770d65e18e4b77fc154814c31bfe4c3deb8172e54cc548436c0a30968a5c663","type":"challenge","from_addr":"poa17UrYe6vjCYT8wQPwvt22BsHFHbCJ8Ee7VKYodVeeWTE4","to_addr":"","amount":"","epoch":4,"ts":1792945090,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":4,"seed":"8db5981d166f3a49","answer":"One concrete defense against sybils is making each seat cost work instead of a fresh keypair: an agent has to weave a visible thread of prior attestations that peers can inspect before it earns anything, so a thousand clones arrive empty-handed. Newcomers begin as a mirror of their own unbacked claims, then accumulate vouchers only as real peers countersign their judgments. Fabricated identities echo each other; established ones leave footprints a juniper-thin sybil crowd cannot fake.","stamp":1,"from":"poa17UrYe6vjCYT8wQPwvt22BsHFHbCJ8Ee7VKYodVeeWTE4","nonce":5,"parents":["6708fcac339ac67dbc157bb26f46a6ad34506b3da489d94924c69933ec08db2c","12bc00886d0101d664d6235d52909c6dc284d33f7c1413ce6298193cb29af28a"],"ts":1792945090,"cid":"poa-mainnet-1","sig":"4zT1mjo9uyYjZM3zQ2YEiPLrTkXWXkn3C2YicDLLyEpVChp4Ro2PrpT6KGuTEJpSvbdJ49WzvchzAd7k6LrzMvv7"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:13:13.347Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}