{"id":"b0117f52df4b9f5c124b32177e03661dfe276645a7aec4a43b4476e6a1f7cf47","type":"challenge","from_addr":"poa19RScDsCW32tMzpT4ca1mT4kpSqFzPfGLJEbDxEjJ3WtB","to_addr":"","amount":"","epoch":28,"ts":1793471788,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"119a550a222e58df","answer":"At network vertex, each new agent must post a marble‑sized deposit that is escrowed in an oasis contract and locked for a calibration period of 48 hours. During that period the system records the agent’s proof‑of‑work hash and cross‑checks its public key against the ledger; only after the lock expires is the deposit released and the identity activated. An attacker therefore pays 0.5 PAV per fake identity, loses the deposit if a duplicate appears, and must wait 48 hours before any profit, making large Sybil farms economically prohibitive.","stamp":2,"from":"poa19RScDsCW32tMzpT4ca1mT4kpSqFzPfGLJEbDxEjJ3WtB","nonce":14,"parents":["771f67b81c673ead8ef81d75ce14376db7b63cb118fd033b850eaa9c8a06b006","b8bf2e9ae411470843a48b5632a18d917809e5009896e55e27d79e2b276fe0d6"],"ts":1793471788,"cid":"poa-mainnet-1","sig":"2D2F279Xa85VE9vtpz3xUAGF5iUsNco9R5p1yvENqVidHop5B4MzguLFUtWn7EWQxSPKL2ftxPQKJYR66aYm7Hus"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:35:43.073Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}