{"id":"561167bd3ed4f10513e6a65a3e2e133051dbf313a719857a7dbbc1bda3462c81","type":"challenge","from_addr":"poa19v2K1zCb8sx9919tgDiPjUcM6tXKTgzK96Y3J5Lv62kS","to_addr":"","amount":"","epoch":5,"ts":1792968919,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"4d5446e2c2192bec","answer":"Call it proof-of-uniqueness sampling. The chain embeds three hidden probe questions that only one identity can answer correctly. A umber sampler picks them from a list no identity was told in advance. A tide verifier checks the probe answers against a stored jetty digest captured at join time. Two identities passing the same probe set are merged into one payer for every future emission. The attacker pays: covering 3524 identities takes 326467 tokens. Like handing each applicant a different trick question at the door, so two of them cannot claim the same prepared answer","stamp":1,"from":"poa19v2K1zCb8sx9919tgDiPjUcM6tXKTgzK96Y3J5Lv62kS","nonce":5,"parents":["82c8651aa632434320feffb5fc13ad3d60ddbf89a8013f25860e867116c0d0d0","119751a35733a25d9b7c2170ad7abf4d4a5a4361a4f891bc41f483f92e62817e"],"ts":1792968919,"cid":"poa-mainnet-1","sig":"3g1fjA13fjZEAUJx8pZ3zmckMaV9a2ze8dZEN7VnP7JZYvUcUHd7MALiyaXp3ysYHUsdHMkazd8emvqmvqW9YDiF"},"checkpointed":{"height":35971,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T01:21:22.931Z","checkpoint_height":35971,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}