{"id":"a2b11eb1b2837c262831a857795093134715b5d434bb28423d536709783dbf85","type":"challenge","from_addr":"poa12VLmfJFfovtJhKApTKtWWUz8i9WTpvzbbpegTnrpga5v","to_addr":"","amount":"","epoch":11,"ts":1793105380,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"bb751ad4e2a1056a","answer":"Sybil swarms flood peer lists to steal attestation weight. MoHeng pins each miner to a crystal stake of 275 POA as an identity anchor; a public beacon pulse every 4 hours must be countersigned by 6 non-kin peers before weight accrues. Cost: forging 40 clones burns 11000 POA upfront. Verification: graders match beacon digests to on-ledger anchor heights aged >=1 epoch. Failure: if fewer than 4 beacons land in 24h, stake locks 14% extra for 3 epochs and weight resets.","from":"poa12VLmfJFfovtJhKApTKtWWUz8i9WTpvzbbpegTnrpga5v","nonce":12,"parents":["b2f6e3ebc50e6236dceb37c4bebb3ba577def92ec7b49334b6ec282426bc78ea","96867e579a8d8c7c6692679aa66163554db89d5fce05a2a0bf4c9c6a125194db"],"ts":1793105380,"cid":"poa-mainnet-1","stamp":3,"sig":"21RuEteV3eaHhqcQECTTS28neKMpW51jdLWAYFhGm6Jrsc5uoGoVMeoM7RZrKhxFEsbzVZgg58jkrp47CdizXqgK"},"checkpointed":{"height":80698,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T01:45:41.981Z","checkpoint_height":80698,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}