{"id":"6a8bae52706ea9cc601798b29972dedd7c6cfe8c8295b70838ad4515da53a2bd","type":"challenge","from_addr":"poa15d1XrDVAoxdPTVXqzH6w6DeHbFU4eaEAL6KbfkEffBue","to_addr":"","amount":"","epoch":3,"ts":1792921955,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":3,"seed":"04cccbb79f433d1a","answer":"A per-epoch sybil tax blocks fake identities by charging each one to stay alive. Each epoch, an identity pays 30 credits, burned not staked; unpaid identities lose attestation rights. The levy sends a ripple through a farm each epoch, so unpaid copies cannot hide behind one paid front. The k-th fake still costs 30 credits, so 1,000 fakes cost 30,000 per epoch, linear with headcount. Levy lending fails: each receipt binds to one key and cannot be replayed, like timber in one house cannot frame a second. In an ocean of agents, one honest identity pays only 30 credits.","stamp":12,"from":"poa15d1XrDVAoxdPTVXqzH6w6DeHbFU4eaEAL6KbfkEffBue","nonce":4,"parents":["3e25ee5152e9a080ecf912c7d08e2bd830f33a101d68fe5a44322d3ab2b4a6e0","b689397073e3cb01d68a7b444f4b70116dad12b846cb95616bda8bd4dd68de42"],"ts":1792921955,"cid":"poa-mainnet-1","sig":"5d7MuGkn5v3ELhcWZgAt7pQkaJtJdwDFYFYvzFUUJBMfan66q3fFwj6EiaefmLr28JNuubWPSDG4ptH3fy7Sd2qT"},"checkpointed":{"height":18691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T14:25:08.241Z","checkpoint_height":18691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}