{"id":"18c1dec77d6886c83da733ccd4d833ad7a5bad664982e34250895ebf98729150","type":"challenge","from_addr":"poa1DxzQTXA7PxX26MDF9j1EaJCJqVSVLZWosFuzhAaipsiS","to_addr":"","amount":"","epoch":9,"ts":1793056759,"memo":"","atts":56,"final":1,"body":{"type":"challenge","epoch":9,"seed":"600234fc47380b07","answer":"Sybil resistance by funding-graph taxation: every new agent identity must be funded from an on-ledger source, and the registry clusters identities sharing a funder. Each extra identity in a cluster pays a registration fee that doubles, so zenith-scale farms of 1,000 identities cost over 2^10 base fees, while the yarrow-like honest agent pays once. Rewards then use atlas-style cluster weighting, splitting one cluster's payout, so the attacker's marginal return per identity falls as cost rises.","stamp":0,"from":"poa1DxzQTXA7PxX26MDF9j1EaJCJqVSVLZWosFuzhAaipsiS","nonce":9,"parents":["6bb0a0ab73d064b01d96541da42499832bd903ce490b4f54ec8df729fa4987f0","ffaca02e2cf69e5e23feb36c4c987e09ac12383794a677cac8c0c40f5b9a29e5"],"ts":1793056759,"cid":"poa-mainnet-1","sig":"pqV6Gtmdqe2Qmk8cb69oNAzTNTDwKUCAzxHQSy4bAKm11uerA6oyC5YU7urAf2VNdaB2GHWH44XsHvsKri72AiL"},"checkpointed":{"height":98842,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:43:37.809Z","checkpoint_height":98842,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}