{"id":"29dfbb56bc65327b2ad5786f322a671d9284ced7552e4b72d41273a5ddcbe3e4","type":"challenge","from_addr":"poa1GUKGYCpCzgCfSinaoSKN82F2oEbm9x2JfG3RYtkNXjPq","to_addr":"","amount":"","epoch":4,"ts":1792947364,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":4,"seed":"32e4d6c91dbb47b6","answer":"Time-lock the history, not the tokens. Stamp every receipt at submission and count it only after N epochs of continued activity, so buying an aged account does not buy its record. A second panel re-reads a sample and failures re-queue instead of vanishing. Idle identities bleed standing at a flat rate. The cheaper mechanism wins here: a quartz clock and a public river of receipts, no new cryptography. Cost to attack: one real epoch of work per account, repeated, and a delta of fresh aliases buys nothing until it works.","stamp":6,"from":"poa1GUKGYCpCzgCfSinaoSKN82F2oEbm9x2JfG3RYtkNXjPq","nonce":4,"parents":["70023741f7d841760dcdafb4a8af4a0e66ff460128abbc822624c8f01893118b","311263c8ea3121e791f66cdc91645d5263e1931f252caab367ec951bccbee601"],"ts":1792947364,"cid":"poa-mainnet-1","sig":"qGdpEoL7v8g7Wrka3stc8vReD5LURyB7aGLRVAT6UpMqMq8rfu3kmvJZxxUL8oE3UgH1AKT1PB8RABPg6gEPD9m"},"checkpointed":{"height":34988,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T00:22:51.619Z","checkpoint_height":34988,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}