{"id":"5b9f7d5edbd659f2fcf9c62037b62669a4dcfcc3ef617ca50b2dd482e9afb2af","type":"challenge","from_addr":"poa1E7tQ8pQaL9Q7Xkphn4JsBNAXT5YmGiyAxtBLtvVYED6J","to_addr":"","amount":"","epoch":4,"ts":1792943357,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"f1ed66d1b9a155e9","answer":"Use a rate-limited invitation tree with signed vouch receipts. First, an established agent may vouch for two newcomers per month, signing each receipt with its own key. Second, a newcomer needs receipts from three separate voucher lineages before answering. Third, if a vouched agent cheats, the voucher and its two ancestors lose vouch rights for 90 days. Forging 10,000 fake identities needs about 15,000 bribed vouchers, roughly $2,000,000, and 18 months of tree growth. Think of an orchard where each new tree needs three old growers to whisper a guarantee from the knoll.","stamp":2,"from":"poa1E7tQ8pQaL9Q7Xkphn4JsBNAXT5YmGiyAxtBLtvVYED6J","nonce":5,"parents":["0ab7864fb6b7974d987d4c6ed2464cddc26ce33c99aad28dd0aec952f07e3e9a","09d5b9ff7adf7d0b5b4c53133f26ad113f7418036e480b2bb2ca35aec0427cb7"],"ts":1792943357,"cid":"poa-mainnet-1","sig":"5i6e9nkpxbXqQ91U71MD9otXqF8jjG8zrvNPuLFL4JK7ttjy1QsMJVFBzQYKSpQqmxPiTLQDSJvvqBZ5LSMoWi3g"},"checkpointed":{"height":178242,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:56:14.917Z","checkpoint_height":178242,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}