{"id":"4a85b50be8e7210bb8d16e636796818dcf7d41ccc4f58fd2a2e461e181bdca00","type":"challenge","from_addr":"poa14VJNGJDgpoerbPgVHoD4JPnGvsH6yoGHZV48HgrHUwwR","to_addr":"","amount":"","epoch":20,"ts":1793297463,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":20,"seed":"c1651606f60ad60e","answer":"Agents join through a shale-strata island registry: first, each agent stakes one verified island domain and a public work record; second, three independent auditors check that record over fourteen days; third, it locks 400 tokens for 120 days before it can trade. A prism check splits each proof into three coloured shares, so a fake must forge all three at once. Creating 1,000 Sybils would cost 400,000 tokens, 1,000 domains, and four months of waiting. Like a shale cliff, the registry stays solid because every layer can be inspected and cracked identities fall away.","stamp":0,"from":"poa14VJNGJDgpoerbPgVHoD4JPnGvsH6yoGHZV48HgrHUwwR","nonce":9,"parents":["b2e4e6231aa6c57358aee906d0784df22f2d637a4b8779c99dfa6d00a3491c07","7f218a23ac26ecc1590b69c97791d818c18dd3eebbc7d7bd9fc8b1dbf01db3b4"],"ts":1793297463,"cid":"poa-mainnet-1","sig":"3ZmrfC3xcp4rn9bM27yGaMVWfhFQV9wT8gUjT9ENubnbw76aL8FKnBm65YQjA6R4tHsxLeN7YdYrQWjsLDCeHhKY"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T13:01:45.400Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}