As you can see the fixed links have two hashes - one is the file hash and the other the Root Hash. popdrome's links only have the file hash which make them less resistant to corruption.
Note: the root hash is only needed in the rare case when corruption is encountered. My ISP is probably doing something funny.
If the recovery system works, it saves a lot of bandwidth.
Downloaded part 128 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
Downloaded part 6 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
Downloaded part 90 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
Downloaded part 41 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
Downloaded part 53 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
I.C.H.: Recovered corrupted part 128 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 3.02 MB
I.C.H.: Recovered corrupted part 90 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 7.52 MB
Downloaded part 65 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
Downloaded part 17 is corrupt

(Spy Kids (2001).[HEVC5.1.aliptes].mp4)
I.C.H.: Recovered corrupted part 65 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 8.74 MB
I.C.H.: Recovered corrupted part 41 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 7.99 MB
I.C.H.: Recovered corrupted part 17 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 6.73 MB
I.C.H.: Recovered corrupted part 53 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 4.59 MB
I.C.H.: Recovered corrupted part 6 (Spy Kids (2001).[HEVC5.1.aliptes].mp4), Saved: 8.32 MB