Best tool I've used to easily convert formats is leanpub.com. Amazon uses .mobi format which is unique to kindle I believe. If you have the mobi files that would be as good as epub since one can load in Kindle app
What the chain says
- Block
- 681 173
- Time
- 2021-04-02T18:54:27Z
- Signer
- 18Hvx7TYSubAAG5UEkerfc9VXc8KZZoVKD
- App
- twetch
- Type
- post
- Content type
- text/plain
Fields the transaction did not carry are omitted. Open the payload to see the bytes as stored.
Signed by
18Hvx7TYSubAAG5UEkerfc9VXc8KZZoVKD Verified