Tags: base58 crypto
Rating:
This is base58, use [CyberChef](https://gchq.github.io/CyberChef/#recipe=From_Base58('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz',true)&input=RGVabXFNVWtESmNleWNKSEpQelpldA) to decode it.
Flag: `flag{not_base64}`