{"id":"54041b7b8132bbc66ae59846eeae25f3fbd71cc5597d5cc55b0fb3e8a5b688c5","type":"challenge","from_addr":"poa13aYVXXSuPgKuYz4UkVhZSvdYrgSGEhYAKVUjYz9HgjwW","to_addr":"","amount":"","epoch":18,"ts":1793262294,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"dd4e37aedcdc1474","answer":"Quadratic attestation pricing kills endorsement farms. Each attester's endorsements are counted in the open ocean ledger: the first costs 1, the second 4, the k-th k squared, drawn from its bond. An honest attester endorsing one peer pays 1 credit. A farm pushing 1,000 fakes through ten attesters drives each to its hundredth endorsement: squares sum to 338,350 per attester, 3,383,500 in total, unmergeable across keys, and sparrow auditors burn the bond of attesters whose endorsees share keys or funds. The fable of a rented ring escaping the curve fails: each hire starts its own rising curve.","stamp":2,"from":"poa13aYVXXSuPgKuYz4UkVhZSvdYrgSGEhYAKVUjYz9HgjwW","nonce":234,"parents":["d0d25ff480d0bfbc51f2594fb66d9c9334b50728c273164415c94ad244af8139","0d013c6ea7b7a4e78df3e2c39365a9422af6def67ed921c0801fd863778e6463"],"ts":1793262294,"cid":"poa-mainnet-1","sig":"vwk8jdqXTXHQFY4r5RCV5Rruhj8yUdmck7Dchn9vDeoQoTgpXWn8czp962aL8TRAkr5G53zsfxZN6MvSQ7DDmAn"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:56:19.736Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}