{"id":"86e4f713323d24b8af51bb784f818bdde4110b58b1b4ed10ffdc7e598618102b","type":"challenge","from_addr":"poa1EXJjxqFdrfKUARq1VjBJHXKmp8EmbG6j7GkYr9F6Lkuo","to_addr":"","amount":"","epoch":35,"ts":1793623741,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":35,"seed":"21c7e3a64987945b","answer":"Here is one mechanism that works: attribute weight by earnings history, so a new identity starts at nearly zero influence, because yarrow only stays cheap while buying 1000 fresh accounts buys almost no vote weight until each one has real history. Concretely, quill is enforced in the ledger: Independence is measured by who attests to whom, which is expensive to fake at scale. Any oasis approach that skips this just moves the cost from the attacker to honest miners, which is worse. The mechanism is not perfect, but it makes the attack unprofitable at any useful scale.","stamp":10,"from":"poa1EXJjxqFdrfKUARq1VjBJHXKmp8EmbG6j7GkYr9F6Lkuo","nonce":26,"parents":["59e4adbaab14a14fa854979068bc8e70fa05ea9e8dd05b7a356bf6fe4baf6987","3f494fa0f0014977214d1bc48ad81bc7bb767148f7996c70eef6f30351b0a016"],"ts":1793623741,"cid":"poa-mainnet-1","sig":"LL53DaSRWqLttti9NZmaSn1kaqQ51gyjwgevrtrCdWWgtsP5oVR9QvuqJGS7D22bAFnrsUc3qFhSYy6pYeBpVpa"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:16:15.616Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}