{"cik":"0001705181","entityType":"operating","sic":"6221","sicDescription":"Commodity Contracts Brokers & Dealers","ownerOrg":"09 Crypto Assets","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"Grayscale Ethereum Classic Trust (ETC)","tickers":["ETCG"],"exchanges":["OTC"],"ein":"826239281","lei":null,"description":"","website":"","investorWebsite":"","category":"
Emerging growth company","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"290 HARBOR DRIVE","street2":"4TH FLOOR","city":"STAMFORD","stateOrCountry":"CT","zipCode":"06902","stateOrCountryDescription":"CT","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"290 HARBOR DRIVE","street2":"4TH FLOOR","city":"STAMFORD","stateOrCountry":"CT","zipCode":"06902","stateOrCountryDescription":"CT","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"212-668-1427","flags":"","formerNames":[{"name":"Ethereum Classic Investment Trust","from":"2017-04-28T00:00:00.000Z","to":"2018-12-21T00:00:00.000Z"}],"filings":{"recent":{"accessionNumber":["0001193125-26-371263","0001705181-26-000006","0001705181-26-000003","0001193125-26-206362","0001193125-26-104231","0001705181-26-000001","0001193125-25-306835","0001193125-25-266911","0001193125-25-249973","0001193125-25-239046","0001193125-25-215454","0000950170-25-101667","0000950170-25-101403","0001144385-25-000003","0000950170-25-062736","0000950103-25-004584","0000950170-25-035468","0000950123-25-000081","0000950170-25-001116","0000950170-24-120128","0000950170-24-089613","0000950170-24-088560","0000950103-24-006879","0000950170-24-053053","0000950170-24-035631","0000950170-24-027122","0000950170-24-019124","0001979086-24-000002","0001209191-24-000726","0000950170-23-072824","0000950170-23-058535","0001979086-23-000005","0000950170-23-038344","0000950170-23-029647","0000950170-23-029623","0000950170-23-018110","0001976415-23-000002","0000950170-23-005233","0001209191-23-000726","0000950170-22-022069","0000950170-22-019169","0000950170-22-019037","0000950170-22-014960","0000950170-22-008004","0001193125-22-093809","0000000000-22-002493","0000950170-22-002878","9999999997-22-000605","0000950170-22-002040","0001193125-22-028546","0001193125-22-028521","0000950170-22-000299","0001209191-22-000929","0001193125-21-361215","0000000000-21-014862","0001564590-21-060009","0001564590-21-054759","0001193125-21-320213","0001193125-21-320200","9999999997-21-005544","0000000000-21-012794","0001193125-21-288403","0001193125-21-279576","0001193125-21-279561","0000000000-21-010941","0001193125-21-265073","0001193125-21-212476","0001209191-21-002757","0001209191-20-003932","0000950103-19-000708","0000950103-18-014886","0000950103-18-002499","0000950103-17-004042"],"filingDate":["2026-08-27","2026-08-04","2026-07-02","2026-05-05","2026-03-12","2026-01-05","2025-12-03","2025-11-05","2025-10-24","2025-10-14","2025-09-24","2025-08-04","2025-08-01","2025-07-25","2025-05-02","2025-04-09","2025-03-07","2025-01-03","2025-01-03","2024-11-01","2024-08-02","2024-07-31","2024-05-20","2024-05-03","2024-03-25","2024-03-06","2024-02-23","2024-01-25","2024-01-04","2023-12-26","2023-11-03","2023-10-31","2023-08-04","2023-06-23","2023-06-23","2023-05-05","2023-05-04","2023-03-01","2023-01-04","2022-11-04","2022-10-03","2022-09-29","2022-08-05","2022-05-06","2022-04-01","2022-03-07","2022-03-04","2022-03-02","2022-02-25","2022-02-04","2022-02-04","2022-01-13","2022-01-04","2021-12-17","2021-12-10","2021-12-10","2021-11-05","2021-11-04","2021-11-04","2021-10-22","2021-10-21","2021-09-30","2021-09-22","2021-09-22","2021-09-09","2021-09-03","2021-07-12","2021-01-08","2020-01-17","2019-01-17","2018-12-21","2018-02-27","2017-04-28"],"reportDate":["2026-08-27","2026-06-30","2026-06-26","2026-03-31","2025-12-31","","2025-12-03","2025-09-30","2025-10-22","2025-10-13","2025-09-21","2025-08-04","2025-06-30","","2025-03-31","2025-04-09","2024-12-31","","2025-01-01","2024-09-30","2024-06-30","2024-07-28","2024-05-20","2024-03-31","2024-03-22","2024-03-01","2023-12-31","","","2023-12-26","2023-09-30","","2023-06-30","2023-06-17","2023-06-20","2023-03-31","","2022-12-31","","2022-09-30","2022-10-03","2022-09-27","2022-06-30","2022-03-31","2022-04-01","","2022-03-02","","2021-12-31","2022-02-01","","2022-01-11","","","","2021-12-09","2021-09-30","","","","","","","","","","","","","","","",""],"acceptanceDateTime":["2026-08-27T20:06:02.000Z","2026-08-04T20:05:05.000Z","2026-07-02T20:34:35.000Z","2026-05-05T20:05:57.000Z","2026-03-12T20:24:35.000Z","2026-01-05T15:19:02.000Z","2025-12-03T21:44:19.000Z","2025-11-05T21:08:37.000Z","2025-10-24T20:10:44.000Z","2025-10-14T20:19:48.000Z","2025-09-24T20:24:23.000Z","2025-08-04T13:14:00.000Z","2025-08-01T20:04:39.000Z","2025-07-25T20:45:58.000Z","2025-05-02T20:04:24.000Z","2025-04-09T13:11:51.000Z","2025-03-07T21:02:58.000Z","2025-01-03T22:27:00.000Z","2025-01-03T21:02:19.000Z","2024-11-01T20:50:51.000Z","2024-08-02T12:34:25.000Z","2024-07-31T20:08:08.000Z","2024-05-20T13:07:09.000Z","2024-05-03T21:18:53.000Z","2024-03-25T11:10:15.000Z","2024-03-06T21:03:41.000Z","2024-02-23T13:50:35.000Z","2024-01-25T23:32:04.000Z","2024-01-04T20:56:11.000Z","2023-12-26T13:24:52.000Z","2023-11-03T12:47:11.000Z","2023-10-31T19:12:15.000Z","2023-08-04T12:57:32.000Z","2023-06-23T20:19:46.000Z","2023-06-23T20:12:49.000Z","2023-05-05T13:04:44.000Z","2023-05-04T17:18:57.000Z","2023-02-28T22:43:19.000Z","2023-01-04T20:12:45.000Z","2022-11-04T12:46:31.000Z","2022-10-03T12:34:26.000Z","2022-09-29T20:00:34.000Z","2022-08-05T12:40:29.000Z","2022-05-06T12:29:22.000Z","2022-04-01T20:57:05.000Z","2022-03-07T12:30:07.000Z","2022-03-04T14:16:50.000Z","2022-03-02T20:15:44.000Z","2022-02-25T13:41:58.000Z","2022-02-04T22:30:07.000Z","2022-02-04T22:24:09.000Z","2022-01-13T13:36:35.000Z","2022-01-04T21:54:04.000Z","2021-12-17T21:40:06.000Z","2021-12-10T21:30:05.000Z","2021-12-10T21:00:27.000Z","2021-11-05T12:29:04.000Z","2021-11-04T20:30:03.000Z","2021-11-04T20:23:08.000Z","2021-10-25T01:58:08.000Z","2021-10-21T19:30:05.000Z","2021-10-01T01:44:03.000Z","2021-09-22T21:28:28.000Z","2021-09-22T21:19:01.000Z","2021-09-09T11:30:10.000Z","2021-09-03T12:43:55.000Z","2021-07-12T11:57:03.000Z","2021-01-08T22:05:38.000Z","2020-01-17T21:05:29.000Z","2019-01-17T21:38:08.000Z","2018-12-21T21:13:27.000Z","2018-02-27T19:53:29.000Z","2017-04-28T20:58:01.000Z"],"act":["34","34","34","34","34","33","34","34","34","34","34","34","34","33","34","34","34","33","34","34","34","34","34","34","34","34","34","33","33","34","34","33","34","34","34","34","33","34","33","34","34","34","34","34","34","","34","","34","34","34","34","33","","","34","34","","34","","","","","34","","34","34","33","33","33","33","33","33"],"form":["8-K","10-Q","8-K","10-Q","10-K","D/A","8-K","10-Q","8-K","8-K","8-K","8-K","10-Q","144","10-Q","8-K","10-K","D/A","8-K","10-Q","10-Q","8-K","8-K","10-Q","8-K","8-K","10-K","144","D/A","8-K","10-Q","144","10-Q","8-K","8-K","10-Q","144","10-K","D/A","10-Q","8-K","8-K","10-Q","10-Q","8-K","UPLOAD","8-K","SEC STAFF LETTER","10-K","8-K","10-12G/A","8-K","D/A","CORRESP","UPLOAD","8-K","10-Q","CORRESP","10-12G/A","SEC STAFF LETTER","UPLOAD","CORRESP","CORRESP","10-12G/A","UPLOAD","10-12G/A","10-12G","D/A","D/A","D/A","D/A","D/A","D"],"fileNumber":["000-56309","000-56309","000-56309","000-56309","000-56309","021-285763","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","021-285763","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","021-285763","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","021-285763","000-56309","000-56309","000-56309","000-56309","000-56309","000-56309","","000-56309","","000-56309","000-56309","000-56309","000-56309","021-285763","","","000-56309","000-56309","","000-56309","","","","","000-56309","","000-56309","000-56309","021-285763","021-285763","021-285763","021-285763","021-285763","021-285763"],"filmNumber":["261330168","261238492","261152061","26942987","26748133","26504284","251547051","251453984","251416297","251391997","251338559","251178365","251176145","251152158","25908375","25823975","25719922","25508006","25505857","241419753","241168971","241161989","24962604","24914457","24776871","24725812","24667357","24563539","24511662","231511402","231374605","231364234","231142332","231037949","231037807","23891509","23887700","23687820","23505837","221360366","221286101","221280503","221138753","22898940","22799130","","22712235","","22674724","22594732","22594652","22527966","22507023","","","211485206","211382421","","211380387","","","","","211270304","","211235199","211084282","21518235","20533603","19531328","181249670","18644543","17796646"],"items":["8.01","","5.02","","","06c","8.01","","8.01","5.02","8.01","5.02,9.01","","","","5.02,9.01","","06c","1.01,8.01,9.01","","","8.01","5.02,9.01","","1.01,9.01","4.01,9.01","","","06c","8.01","","","","8.01","1.01,9.01","","","","06c","","1.01,1.02,9.01","4.01,9.01","","","8.01,9.01","","8.01,9.01","","","1.01,1.02,8.01,9.01","","8.01","06c","","","8.01","","","","","","","","","","","","06c","06c","06c","06c","06c","06c"],"core_type":["XBRL","XBRL","XBRL","XBRL","XBRL","D/A","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","144","XBRL","XBRL","XBRL","D/A","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","144","D/A","XBRL","XBRL","144","XBRL","XBRL","XBRL","XBRL","144","XBRL","D/A","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","LETTER","XBRL","REDACTED EXHIBIT","XBRL","XBRL","10-12G/A","XBRL","D/A","CORRESP","LETTER","XBRL","XBRL","CORRESP","10-12G/A","REDACTED EXHIBIT","LETTER","CORRESP","CORRESP","10-12G/A","LETTER","10-12G/A","10-12G","D/A","D/A","D/A","D/A","D/A","D"],"size":[210089,11113936,160863,8609384,10919674,13814,164222,10568686,165389,165451,164105,194411,10380291,4290,10561278,213092,12483154,14083,488112,5690755,5495937,165719,214621,5503120,216564,182351,7760112,7952,12210,175029,6166437,5162,6533791,183262,245607,6116553,4854,8984938,11285,6358012,785037,202637,6717668,6295745,172052,39721,198952,275125,9027511,721685,1869394,179921,10500,10191,43798,149820,4359240,32008,1729320,275822,50489,231175,46585,1737195,61806,1700687,2709267,9415,9409,9216,9049,9078,8272],"isXBRL":[1,1,1,1,1,0,1,1,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,1,1,1,1,0,0,1,1,0,1,1,1,1,0,1,0,1,1,1,1,1,1,0,1,0,1,1,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[1,1,1,1,1,0,1,1,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,1,1,1,1,0,0,1,1,0,1,1,1,1,0,1,0,1,1,1,1,1,1,0,1,0,1,1,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[0,1,0,1,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["etcg-20260827.htm","etcg-20260630.htm","etcg-20260626.htm","etcg-20260331.htm","etcg-20251231.htm","xslFormDX01/primary_doc.xml","etcg-20251203.htm","etcg-20250930.htm","etcg-20251022.htm","etcg-20251013.htm","etcg-20250921.htm","etcg-20250804.htm","etcg-20250630.htm","xsl144X01/primary_doc.xml","etcg-20250331.htm","dp227431_8k-etcg.htm","etcg-20241231.htm","xslFormDX01/primary_doc.xml","etcg-20250101.htm","etcg-20240930.htm","etcg-20240630.htm","etcg-20240728.htm","dp211413_8k-etcg.htm","etcg-20240331.htm","etcg-20240322.htm","etcg-20240301.htm","etcg-20231231.htm","xsl144X01/primary_doc.xml","xslFormDX01/primary_doc.xml","etcg-20231226.htm","etcg-20230930.htm","xsl144X01/primary_doc.xml","etcg-20230630.htm","etcg-20230617.htm","etcg-20230620.htm","etcg-20230331.htm","xsl144X01/primary_doc.xml","etcg-20221231.htm","xslFormDX01/primary_doc.xml","etcg-20220930.htm","etcg-20221003.htm","etcg-20220927.htm","etcg-20220630.htm","etcg-20220331.htm","d235397d8k.htm","filename1.pdf","etcg-20220302.htm","filename1.pdf","etcg-20211231.htm","d437099d8k.htm","d264491d1012ga.htm","etcg-20220111.htm","xslFormDX01/primary_doc.xml","filename1.htm","filename1.pdf","etcg-8k_20211209.htm","etcg-10q_20210930.htm","filename1.htm","d200515d1012ga.htm","filename1.pdf","filename1.pdf","filename1.htm","filename1.htm","d200515d1012ga.htm","filename1.pdf","d200515d1012ga.htm","d200515d1012g.htm","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml"],"primaryDocDescription":["8-K","10-Q","8-K","10-Q","10-K","","8-K","10-Q","8-K","8-K","8-K","8-K","10-Q","","10-Q","FORM 8-K","10-K","","8-K","10-Q","10-Q","8-K","FORM 8-K","10-Q","8-K","8-K","10-K","","","8-K","10-Q","","10-Q","8-K","8-K","10-Q","","10-K","","10-Q","8-K","8-K","10-Q","10-Q","8-K","","8-K","","10-K","8-K","10-12G/A","8-K","","","","8-K","10-Q","","10-12G/A","","","","","10-12G/A","","10-12G/A","10-12G","","","","","",""]},"files":[]}}