Subsequent Events	12 Months Ended
Sep. 30, 2025
Subsequent Events [Abstract]
Subsequent Events	11. Subsequent Events On October 22, 2025, GSO Intermediate Holdings Corporation (“GSOIH”), a Delaware corporation which was the sole managing member of GSO, a Delaware limited liability company which is the sole member of the Sponsor, consummated an internal corporate reorganization (the “Management Reorganization”). Pursuant to the Management Reorganization, GSOIH transferred a portion of its common membership units of GSO for Class A shares of Grayscale Investments, Inc. (“Grayscale Investments”), a Delaware corporation incorporated in connection with the Management Reorganization, and ceded its managing member rights in GSO to Grayscale Investments. As a result of the Management Reorganization, Grayscale Investments is now the sole managing member of GSO, the sole member of the Sponsor. Also in connection with the Management Reorganization, on October 22, 2025, DCG Grayscale Holdco, LLC (“DCG Holdco”), the sole stockholder of Grayscale Investments, elected a board of directors (the “Board”) at Grayscale Investments. Prior to the Management Reorganization, GSOIH’s board of directors was responsible for managing and directing the affairs of the Sponsor. As a result of the Management Reorganization, the Board of Grayscale Investments is responsible for managing and directing the affairs of the Sponsor, and consists of Barry Silbert, Mark Shifke, Simon Koster, Peter Mintzberg and Edward McGee, the same members as the board of directors of GSOIH prior to the Management Reorganization. Mr. Mintzberg and Mr. McGee also retain the authority granted to them as officers of the Sponsor under the limited liability company agreement of the Sponsor. Mr. Silbert is the Chairperson of the Board of Grayscale Investments. DCG Holdco, Grayscale Investments, GSOIH, GSO and the Sponsor are all consolidated subsidiaries of Digital Currency Group, Inc. The Sponsor does not expect the Management Reorganization to have any material impact on the operations of the Trust. As of the close of business on November 20, 2025, the fair value of ZEN determined in accordance with the Trust’s accounting policy was $13.99 per ZEN. There are no known events that have occurred that require disclosure other than that which has already been disclosed in these notes to the financial statements.

Subsequent Events

12 Months Ended

Sep. 30, 2025

11. Subsequent Events

On October 22, 2025, GSO Intermediate Holdings Corporation (“GSOIH”), a Delaware corporation which was the sole managing member of GSO, a Delaware limited liability company which is the sole member of the Sponsor, consummated an internal corporate reorganization (the “Management Reorganization”). Pursuant to the Management Reorganization, GSOIH transferred a portion of its common membership units of GSO for Class A shares of Grayscale Investments, Inc. (“Grayscale Investments”), a Delaware corporation incorporated in connection with the Management Reorganization, and ceded its managing member rights in GSO to Grayscale Investments. As a result of the Management Reorganization, Grayscale Investments is now the sole managing member of GSO, the sole member of the Sponsor.

Also in connection with the Management Reorganization, on October 22, 2025, DCG Grayscale Holdco, LLC (“DCG Holdco”), the sole stockholder of Grayscale Investments, elected a board of directors (the “Board”) at Grayscale Investments. Prior to the Management Reorganization, GSOIH’s board of directors was responsible for managing and directing the affairs of the Sponsor. As a result of the Management Reorganization, the Board of Grayscale Investments is responsible for managing and directing the affairs of the Sponsor, and consists of Barry Silbert, Mark Shifke, Simon Koster, Peter Mintzberg and Edward McGee, the same members as the board of directors of GSOIH prior to the Management Reorganization. Mr. Mintzberg and Mr. McGee also retain the authority granted to them as officers of the Sponsor under the limited liability company agreement of the Sponsor. Mr. Silbert is the Chairperson of the Board of Grayscale Investments.

DCG Holdco, Grayscale Investments, GSOIH, GSO and the Sponsor are all consolidated subsidiaries of Digital Currency Group, Inc.

The Sponsor does not expect the Management Reorganization to have any material impact on the operations of the Trust.

As of the close of business on November 20, 2025, the fair value of ZEN determined in accordance with the Trust’s accounting policy was $13.99 per ZEN.

There are no known events that have occurred that require disclosure other than that which has already been disclosed in these notes to the financial statements.