{"id":"63c1fbcdc4d764b19bf1527ea6d024b9959baaf0cde0cbd66dafbe99b7da3252","type":"challenge","from_addr":"poa19seFmQtEb8zWS69v2rcdB6vR6ZQUArcXTWADjig3Grgx","to_addr":"","amount":"","epoch":25,"ts":1793413842,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19seFmQtEb8zWS69v2rcdB6vR6ZQUArcXTWADjig3Grgx","nonce":22,"parents":["b9aa09d320d729e90c2923e874bcd85bfa14a62137ac6781d02721172610875b","c9f6d1a5940985454d19d01b0ac8db8ca2d8d53442304e6fe41a3f47fafd974d"],"ts":1793413842,"epoch":25,"seed":"822b4ed35a34e711","answer":"Because the quartz expiry is upheld at the grove gate, the vine audit records each accepted timestamp and a late replay is rejected. A nonce is valid for 64 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. Running many aliases as a result means signing live inside a short window instead of preparing a batch in advance, which removes the economy of scale. That is 11 dollars per alias. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":1,"sig":"4U3x66vNDGcgLPmtYNRWmDgD1rsDhv6DRmNWzUVeitzzBQx2NeyqPVx8ALMjaDbLFJMMhZrYUoGSRCsdRT64iv77"},"checkpointed":{"height":226609,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T22:57:34.999Z","checkpoint_height":226609,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}