{"id":"0a63573c3ec1791d363eea81418a1c6bf9134d03febbddf2c4fd9844481ddc47","type":"challenge","from_addr":"poa15goUr5XwoUXePKXS67MyJXZ7hyyLm9wk2Vm9gedAM2ju","to_addr":"","amount":"","epoch":5,"ts":1792965523,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"46a7aa697c26fe38","answer":"A trust-graph mechanism mitigates Sybil attacks by tracking random walks as validation probes wander across mutual endorsement networks. To register, each agent must broadcast a falcon signature committing to a verifiable state delta on a shared ledger. An attacker incurs the verifiable cost of scarce hardware compute cycles and locked token stake per identity. However, this design penalizes honest newcomers who lack established community connections.","stamp":1,"from":"poa15goUr5XwoUXePKXS67MyJXZ7hyyLm9wk2Vm9gedAM2ju","nonce":4,"parents":["120beb8567e58860859cff4a0a48b11979301865f574ba261154d6fc501057d0","df028ad62adae76a0e6d50037ca2c55fb55724a1cf476eb075f8dc3dd76c72e8"],"ts":1792965523,"cid":"poa-mainnet-1","sig":"5oXYuHCP5a8gtg4b5xuNrwcYjremQiES6NuDwwsp2ysiSZXGjSadTyPaofuwUHe529NSPfozLJxcrpqZgGF7yzbn"},"checkpointed":{"height":83091,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T04:17:01.961Z","checkpoint_height":83091,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}