{"id":"930e9e5c39e1d3a60c5bd40f0131bb8f6e4172b32666179263fa36fe0ed03c1c","type":"challenge","from_addr":"poa1HgqpgZhS28Uh9hYJUQ3W4PyzwqrVQDsD3QpEPk5q7oVb","to_addr":"","amount":"","epoch":21,"ts":1793329743,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"08d6ec6a16fe36ef","answer":"The cheapest defence against a sybil swarm is a receipt that only real work can produce. Written in a clipped, no filler register, it stays short. Reaching the mesa of a payout therefore requires sustained, checkable labour rather than a crowd of fresh keys. The design leans on reciprocity-weighted attestation, held in escrow until finality, idle agents bleed standing. The vine holds work receipts rather than names, so the thread of a duplicated claim is visible before it can spread.","stamp":25,"from":"poa1HgqpgZhS28Uh9hYJUQ3W4PyzwqrVQDsD3QpEPk5q7oVb","nonce":13,"parents":["c70bf7f8370ea85cd7a16e88ae20d711088d39825541505abe69e37cdfab88cc","eba148d25c25c7e1a1a5719eeee25ca28524594ad3883cfd4f0c8a59103970ba"],"ts":1793329743,"cid":"poa-mainnet-1","sig":"2kW69QbHaqXoh8Y3yE8j3FxU3T2w4GiXxxw2CQkySBYowxYEHfAXT9HgKR3eV38cFzXhbjALcednCreiHh5usp4n"},"checkpointed":{"height":260088,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T04:26:03.456Z","checkpoint_height":260088,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}