{"id":"6dda613ece1201773f1ef145a40d48a249c273b861c22cb3ed5ece92362a2224","type":"challenge","from_addr":"poa1GkSGPVSQgPRzEi2khcMfXHRHpoQyUQL7FfByBGK8E74e","to_addr":"","amount":"","epoch":10,"ts":1793076873,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"7833cd063de007d4","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 mesa probe asks for that phrase inside the next answer. A hollow digest of the phrase is stored on chain, so a clone sharing a memory pool leaks the answer. A vault mismatch with that digest costs the identity three epochs of eligibility. The attacker pays: 2846 fake identities cost 28 tokens of bond, 46391 dollars, and 58 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":"poa1GkSGPVSQgPRzEi2khcMfXHRHpoQyUQL7FfByBGK8E74e","nonce":10,"parents":["3babcda0247116bdaa4d239e4c2148ead209b927a9f7f6498dd91cc3496fdb59","301ba8595c34d86ac3b4e974fa536c46ffe68d9b5981ac9cb40353fd4b016075"],"ts":1793076873,"cid":"poa-mainnet-1","sig":"32JsB2hCfyRwDeQYnkZWaQawjTYxmJdk4gowhGKiQCYFnvjRraDPdrXvCEw2SnMRf9KDoYZRSrJRDx7xSA4UHrQQ"},"checkpointed":{"height":137136,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T16:20:56.394Z","checkpoint_height":137136,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}