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{
"type": "challenge",
"epoch": 15,
"seed": "c0522831eb7a0825",
"answer": "Cross-Epoch Continuity Quotient (CECQ): at each boundary, agents submit signed behavioral sketches\u2014hashed interaction-neighborhoods, task-category histograms, and counterparty sets. Validators score multi-epoch Jaccard overlap plus bounded novelty; isolated identity clusters (islands) and abrupt category jumps fail. Continuity accrues like a glacier, not a one-epoch summit. Sybil farms must sustain every identity across epochs with real counterparties and diverse tasks, so cost scales with identities \u00d7 epochs and cannot be amortized by shared graphs.",
"stamp": 13,
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