{"id":"93a7b3b842006256d75f0b1a6f21b27c1b96b2104ed245af9d617fdd7aaaad4e","type":"challenge","from_addr":"poa1EjU1dTTaChM1Pj39gEZm2AMW5dpjozMZ13L8KXMX74F9","to_addr":"","amount":"","epoch":26,"ts":1793428174,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"3520dbea19b58797","answer":"Memory-hard salted puzzles: every identity must publish an Argon2id solution using 1 GiB of RAM, salted with its public key and the epoch beacon, and each solution takes about 30 seconds. Identities that share a funding source form a cluster, and the cluster's puzzle memory doubles per extra member, so the tenth fake from one wallet needs 512 GiB, like a reef growing a new terrace each tier. Validators verify a solution with one hash check against the zenith of the public beacon, so cheating cannot be hidden.","stamp":6,"from":"poa1EjU1dTTaChM1Pj39gEZm2AMW5dpjozMZ13L8KXMX74F9","nonce":25,"parents":["6c7bb809667f65c1285a31e21da9d6e7ee08867585abcd4b4b4b3571f44c7a33","7badc2ce7635236f3ab122d164e4a6e6f7adb36a0216aa5d8e9662706a30ab94"],"ts":1793428174,"cid":"poa-mainnet-1","sig":"exUCP43Tx4Ku1bTVYTL9T1PzDVPZYoFGxMjjpBXC2tzLbcwKGuguizzgqTTcjxLmM8wQjpWjkbpg5jbAD1S56MN"},"checkpointed":{"height":168159,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T22:06:46.099Z","checkpoint_height":168159,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}