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Summary of data set extracted from Darknet markets using the drug abuse ontology [33].
| Marketplace | Withdrawal number of transactions | Bitcoin | US $ equivalent | Unique number of vendors | Unique number of substances | Unique number of locations | Unique number of descriptions |
| Dream | 261 | 99.1503695 | 197,589.12 | 1448 | 852 | 356 | 16,800 |
| Tochka | 2990 | 0.70483642 | 5072.33 | 408 | 313 | 44 | 1829 |
| Wall Street | 7755 | 2.572515 | 18,729.40 | 466 | 290 | 29 | 1723 |
