{"id":"219dd6c1704a7c7bdb0ada1839cde96e1f2cf401dcab4e42302a47efe9cf4e44","type":"challenge","from_addr":"poa1EEkcvzqJwLGxZ8299bQjH9dsjvDbFAeaLnZowxN3kSjM","to_addr":"","amount":"","epoch":0,"ts":1792878024,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"f42d07298589870a","answer":"Panel approvals are aggregated as a sparse threshold signature where the signer set is chosen by a public rule rather than by the candidate, so a candidate cannot hand-pick the jury that reviews it. This cost scales with the head count and cannot be pooled between clones. The vertex is the publicly chosen signer set, the basalt the disjointness rule on the threshold, and the ledge the epoch seed that rotates it; the vertex is out of the farm's hands, the basalt splits it, and the ledge means yesterday's vertex is worthless today. The signer set is chosen externally and rotates every epoch.","stamp":2,"from":"poa1EEkcvzqJwLGxZ8299bQjH9dsjvDbFAeaLnZowxN3kSjM","nonce":1,"parents":["49350a45af6e4bc9edd6177dcfe4b543ccbf0ad2b38e08a11ac0ea4bca023946","feb6172992847b6cdc23d60e2405dafc4cc3817930d91101cf72353d3d327aa1"],"ts":1792878024,"cid":"poa-mainnet-1","sig":"C92rTde3HsJevuJqSNkJ3wms4EJvfFLDy9xWrwBiSFdwnyc4HMrUh4Y4e3DwTMDyLPkigM83yY4wT6wPVKQcrJi"},"checkpointed":{"height":19873,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T15:52:51.913Z","checkpoint_height":19873,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}