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3. ACQUISITIONS - Schedule of GRIID Acquisition for Preliminary Purchase Consideration (Details) - USD ($) $ / shares in Units, $ in Thousands | Oct. 30, 2024 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |  |  |
Shares of CleanSpark common stock issued |  | 292,823,486 |  | 270,897,784 |  |  |
Fair value of CleanSpark common share issued as a portion of purchase price |  | $ 293 |  | $ 271 |  |  |
Fair value of equity portion of purchase price |  | $ 2,146,888 | $ 1,890,491 | $ 1,760,841 | $ 1,400,640 | $ 1,461,358 | $ 675,668
GRIID Infrastructure Inc [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Shares of CleanSpark common stock issued | 5,031 |  |  |  |  |  |
Closing price per share of CleanSpark common stock on October 30, 2024 | $ 12.06 |  |  |  |  |  |
Fair value of CleanSpark common share issued as a portion of purchase price | $ 60,677 |  |  |  |  |  |
Fair value of CleanSpark warrants issued as a portion of purchase price | 6,097 |  |  |  |  |  |
Fair value of equity portion of purchase price | 66,774 |  |  |  |  |  |
Cash consideration | 1 |  |  |  |  |  |
Settlement of amounts payable by Company to GRIID under Hosting Agreement | (1,164) |  |  |  |  |  |
Settlement of the GRIID Credit Agreement as a portion of purchase price | 62,636 |  |  |  |  |  |
Settlement of preexisting relationship, including interest, as a portion of purchase price | 61,472 |  |  |  |  |  |
Preliminary purchase price | $ 128,247 |  |  |  |  |  |

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