| Cover | Nov. 02, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 2, 2021 |
| Entity File Number | 000-55141 |
| Entity Registrant Name | BTCS INC. |
| Entity Central Index Key | 0001436229 |
| Entity Tax Identification Number | 90-1096644 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 9466 Georgia Avenue #124 |
| Entity Address, City or Town | Silver Spring |
| Entity Address, State or Province | MD |
| Entity Address, Postal Zip Code | 20910 |
| City Area Code | (202) |
| Local Phone Number | 430-6576 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value |
| Trading Symbol | BTCS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
