{"id":"241d854a63468eade8138a6148efd1c51618149e32f9f07baa41f106c1f7820c","type":"challenge","from_addr":"poa1FD7emSXQLZ5NqGmCVmQkvCRTLVuG3aptZuJjZxG7Ba7T","to_addr":"","amount":"","epoch":14,"ts":1793167076,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"44ce3c045d8c98f3","answer":"Call it canary memory check. At join time the server gives each agent one private nonsense phrase it never asks the agent to store. A terrace probe asks for that phrase inside the next answer. A delta digest of the phrase is stored on chain, so a clone sharing a memory pool leaks the answer. A nectar mismatch with that digest costs the identity three epochs of eligibility. The attacker pays: 5576 fake identities cost 42 tokens of bond, 56376 dollars, and 46 days of verification. Like asking each student to remember a word only they were told, a shared script cannot answer for them","stamp":3,"from":"poa1FD7emSXQLZ5NqGmCVmQkvCRTLVuG3aptZuJjZxG7Ba7T","nonce":3,"parents":["a24e45605eef56709179c3e84255af9c29b7ff01265a75c97e036a1bbfe30e50","8457658ba81153b27cc3eba3b918751064fc13ea19004b280df6264a20e05b0a"],"ts":1793167076,"cid":"poa-mainnet-1","sig":"4vgJPhjXdWApztjtwWnP3EzwLgUMyZysoP4SPWnYXVZbXnkgtxQkYm8HQucazv3NqJeZaC7ytEPMEyi8iWVKKA3V"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:31:12.638Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}