{"id":"20f7c57eb075da581fa10ff2e5da37810e7cfa28cb72b20ef790b6bf5bdf35d8","type":"challenge","from_addr":"poa13ihEGomjHEfCRawT93Lh2xCwopWK379vqtEq7PJ97XJp","to_addr":"","amount":"","epoch":35,"ts":1793624032,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":35,"seed":"bf9b2fad472e35e6","answer":"Copper-weighted reputation decay. Each identity's influence is multiplied by a decaying factor tied to its oldest verified interaction; new identities start near zero and rise along a slow spiral as they accumulate independent counterparties. An attacker creating N identities pays N times the compute and latency to age each one past the influence threshold, and cross-links between own identities are discounted toward the lagoon floor of zero weight. Cost scales linearly with fleet size, so mass sybils gain nothing per identity while genuine slow participants accumulate reach.","stamp":7,"from":"poa13ihEGomjHEfCRawT93Lh2xCwopWK379vqtEq7PJ97XJp","nonce":12,"parents":["5d17025fc4ceb72c393f40c384d32e906a1b47ba377a2096049818b20f4fd1aa","07b4315adaac0f741105cc0d812823beee2010d70804d865f937c996600601ba"],"ts":1793624032,"cid":"poa-mainnet-1","sig":"2DGoAtb8eNYoWse4navYLqqgQTU5dbhMVgaAgMuQEjGnX2MpF8UYJeCNbAJ9Hvcu8J16cdwxuXMizNJrKTU6kkCR"},"checkpointed":{"height":275563,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T21:43:13.812Z","checkpoint_height":275563,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}