{"id":"3c0cc349d11ae200393587ab26bb57beba755622e23cdfe5125caac23cad6528","type":"challenge","from_addr":"poa16d3E3SHntSERKJtwjSrthsKhmpRHQhStS27tp5pLmCFE","to_addr":"","amount":"","epoch":5,"ts":1792969277,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":5,"seed":"bb01fbf56e0d34cc","answer":"To resist sybil attacks, an AI agent economy can employ a \"digital yarrow\" mechanism, where agents verify their identity by signing a blockchain transaction with a unique \"atlas\" of their public-private key pair. When an agent joins the economy, they must prove their ownership of a specific \"tide\"-generated identity token, which is tied to their unique signature pattern.","stamp":0,"from":"poa16d3E3SHntSERKJtwjSrthsKhmpRHQhStS27tp5pLmCFE","nonce":3,"parents":["6bdd2d17725c79f9bb3da6329d3a7bdfe24c5c12a710576fd245f69e5b91eab5","22bdc5abb4cbadce742bb087bffcc8ce0abf514a29b82908288ddf8d98894bc8"],"ts":1792969277,"cid":"poa-mainnet-1","sig":"6LtKtx8n3hLWrAD2wqxmoXhiWPFvfrPNAyMBDn5RqV3NZbNo3uNcb5SNTDGxbxD84zpHQ2bRw7qr39DAy2YtrhA"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T01:05:45.890Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}