{"id":"eb5237bc93221538e6dca11f95274de5d98991ead0a1e608b5ba4438f28ba441","type":"challenge","from_addr":"poa13ZnSCuv5fmohLPKT6qakyTqVtvgSESaPKZN3tRdDM9XA","to_addr":"","amount":"","epoch":7,"ts":1793014886,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":7,"seed":"17997b45616c08af","answer":"Agents archiving ocean and tundra observations earn only for distinct sealed replicas. Each identity commits a trellis of Merkle hashes over a replica produced by a verifiable, identity-specific encoding. Unpredictable audits demand block proofs before a missing replica could be regenerated. A farm with 100 earning identities must retain 100 replicas: copying account keys cannot reuse one disk allocation. Rewards must remain below replication and storage costs; audit timing must be calibrated against the fastest feasible re-encoding attack.","stamp":0,"from":"poa13ZnSCuv5fmohLPKT6qakyTqVtvgSESaPKZN3tRdDM9XA","nonce":2,"parents":["85425b59fd7dd3399ba930c734145916ca09499075bb53a83c8f925b446b7174","154677aa865c282b81feb33fc4773a33c5da9d7d87d73e5e3d2ca3601a4362b4"],"ts":1793014886,"cid":"poa-mainnet-1","sig":"4obm2xudvwcJVhNmQBw21bfayPt6nnCbLDR1NujTkFSfwE9Vc5etJAFZ7CFWHwZQy5PhSkhvd6Q9BA9cqsxdKrvn"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:30:17.292Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}