Legal Proceedings	3 Months Ended	12 Months Ended
Jun. 30, 2021	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	11. Legal Proceedings Other than as set forth below, we are not the subject of any pending legal proceedings; and to the knowledge of management, no proceedings are presently contemplated against us by any federal, state or local governmental agency. Further, to the knowledge of management, no director or executive officer is party to any action in which any has an interest adverse to us. On October 8, 2020, we filed a lawsuit in the U.S. District Court for the Central District of California against Joseph Page, our former director and chief technology officer. On January 13, 2021, the case was transferred to the U.S. District Court for the District of Nevada, Las Vegas Division. The causes of action include securities fraud under Federal and California law; fraud, breach of fiduciary duty, negligent misrepresentation and unjust enrichment under California law; and violation of California Business and Professions Code §17200 et seq. We are seeking injunctive and declaratory relief as well as damages of at least $5.1 million. On May 29, 2019, Mr. Page resigned from our board. After his resignation, we retained independent patent counsel to review our patent applications. In connection with this review, we discovered certain deficiencies in some of the applications and in their assignments to us. We determined that all of the applications had been abandoned. Based on this review, we decided to refile three of our applications with the U.S. Patent and Trademark Office, which we did in May 2020. It is our belief that the three newly filed patent applications cover and/or disclose the same subject matter as we disclosed in the five original patent applications. In this case, our rights may be subject to any intervening patent applications made after the dates of the original applications. In the lawsuit, we are alleging that Mr. Page was aware of the abandonments when he assigned the patents to RocketFuel Blockchain Company (“RBC”), a private corporation that he controlled, and that he failed to disclose to us the abandonments when we acquired RBC in exchange for shares of our Common Stock. Mr. Page has filed an answer denying our clams and has asserted cross- and counterclaims against us and several of our shareholders alleging breach of contract and fraud. Mr. Page is seeking damages and declaratory relief. We intend to vigorously contest these allegations. On March 2, 2021, we filed a lawsuit in the U.S. District Court for the Southern District of New York against Ellenoff Grossman & Schole LLP (“EGS”) for negligence and legal malpractice, breach of contract and breach of fiduciary duty. EGS had represented RBC prior to the Business Combination and represented us after the closing of the Business Combination through August 2019. In the litigation against Mr. Page, he has alleged that he provided information to an EGS partner that the patent applications had been abandoned and that EGS failed to inform RBC and us of the fact. We are seeking damages and the return of legal fees previously paid.	10. Legal Proceedings Other than as set forth below, we are not the subject of any pending legal proceedings; and to the knowledge of management, no proceedings are presently contemplated against us by any federal, state or local governmental agency. Further, to the knowledge of management, no director or executive officer is party to any action in which any has an interest adverse to us. On October 8, 2020, we filed a lawsuit in the U.S. District Court for the Central District of California against Joseph Page, our former director and chief technology officer. On January 13, 2021, the case was transferred to the U.S. District Court for the District of Nevada, Las Vegas Division. The causes of action include securities fraud under Federal and California law; fraud, breach of fiduciary duty, negligent misrepresentation and unjust enrichment under California law; and violation of California Business and Professions Code §17200 et seq. We are seeking injunctive and declaratory relief as well as damages of at least $5.1 million. On May 29, 2019, Mr. Page resigned from our board. After his resignation, we retained independent patent counsel to review our patent applications. In connection with this review, we discovered certain deficiencies in some of the applications and in their assignments to us. We determined that all of the applications had been abandoned. Based on this review, we decided to refile three of our applications with the U.S. Patent and Trademark Office, which we did in May 2020. It is our belief that the three newly filed patent applications cover and/or disclose the same subject matter as we disclosed in the five original patent applications. In this case, our rights may be subject to any intervening patent applications made after the dates of the original applications. In the lawsuit, we are alleging that Mr. Page was aware of the abandonments when he assigned the patents to RocketFuel Blockchain Company (“RBC”), a private corporation that he controlled, and that he failed to disclose to us the abandonments when we acquired RBC in exchange for shares of our Common Stock. Mr. Page has filed an answer denying our clams and has asserted cross- and counterclaims against us and several of our shareholders alleging breach of contract and fraud. We intend to vigorously contest these allegations. On March 2, 2021, we filed a lawsuit in the U.S. District Court for the Southern District of New York against Ellenoff Grossman & Schole LLP (“EGS”) for negligence and legal malpractice, breach of contract and breach of fiduciary duty. EGS had represented RBC prior to the Business Combination and represented us after the closing of the Business Combination through August 2019. In the litigation against Mr. Page, he has alleged that he provided information to an EGS partner that the patent applications had been abandoned and that EGS failed to inform RBC and us of the fact. We are seeking damages and the return of legal fees previously paid.

Legal Proceedings

3 Months Ended

12 Months Ended

Jun. 30, 2021

Mar. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

11. Legal Proceedings

Other than as set forth below, we are not the subject of any pending legal proceedings; and to the knowledge of management, no proceedings are presently contemplated against us by any federal, state or local governmental agency. Further, to the knowledge of management, no director or executive officer is party to any action in which any has an interest adverse to us.

On October 8, 2020, we filed a lawsuit in the U.S. District Court for the Central District of California against Joseph Page, our former director and chief technology officer. On January 13, 2021, the case was transferred to the U.S. District Court for the District of Nevada, Las Vegas Division. The causes of action include securities fraud under Federal and California law; fraud, breach of fiduciary duty, negligent misrepresentation and unjust enrichment under California law; and violation of California Business and Professions Code §17200 et seq.

We are seeking injunctive and declaratory relief as well as damages of at least $5.1 million. On May 29, 2019, Mr. Page resigned from our board. After his resignation, we retained independent patent counsel to review our patent applications. In connection with this review, we discovered certain deficiencies in some of the applications and in their assignments to us. We determined that all of the applications had been abandoned. Based on this review, we decided to refile three of our applications with the U.S. Patent and Trademark Office, which we did in May 2020. It is our belief that the three newly filed patent applications cover and/or disclose the same subject matter as we disclosed in the five original patent applications. In this case, our rights may be subject to any intervening patent applications made after the dates of the original applications. In the lawsuit, we are alleging that Mr. Page was aware of the abandonments when he assigned the patents to RocketFuel Blockchain Company (“RBC”), a private corporation that he controlled, and that he failed to disclose to us the abandonments when we acquired RBC in exchange for shares of our Common Stock. Mr. Page has filed an answer denying our clams and has asserted cross- and counterclaims against us and several of our shareholders alleging breach of contract and fraud. Mr. Page is seeking damages and declaratory relief. We intend to vigorously contest these allegations.

On March 2, 2021, we filed a lawsuit in the U.S. District Court for the Southern District of New York against Ellenoff Grossman & Schole LLP (“EGS”) for negligence and legal malpractice, breach of contract and breach of fiduciary duty. EGS had represented RBC prior to the Business Combination and represented us after the closing of the Business Combination through August 2019. In the litigation against Mr. Page, he has alleged that he provided information to an EGS partner that the patent applications had been abandoned and that EGS failed to inform RBC and us of the fact. We are seeking damages and the return of legal fees previously paid.

10. Legal Proceedings