These are the CRC-32 Checksums for all Avlis/CoPaP haks + the current tlk file linked at http://wiki.avlis.org/Needed_files#Individual_Custom_Content_Files and hosted from https://neverwintervault.org/project/nwn1/module/gameworld/world-avlis.
See https://en.wikipedia.org/wiki/Simple_file_verification for how Simple File Verification works, and links to software that uses file verification https://en.wikipedia.org/wiki/Comparison_of_file_verification_software.
*Note 1* If mirrored versions from other hosts/links do not match these CRC-32 Checksums, then they are not proper mirrors, and are not the files used by the Avlis servers. Blunt, but true, so download and try the proper ones before reporting any issues. It is usually the first question you will be asked, and likely required for you to update, before more support is given.
*Note 2* The avlis_ext_hakset.zip, and files in it, are not included here. They are all empty "server-side only" placeholder .haks (besides a single text file saying the same thing), so there is nothing important to break/corrupt in them.

Both the compressed original download CRCs and the uncompressed hak/tlk ones are included, so you can verify any corruption, and where it happened.
Either place the Avlis_Needed_Files_Checksums.sfv file in the same directory as the files you want to check, and run a .sfv checking utility on it, or paste one of the values below for the files directly into any utility that can compare them.
E.g., place the Avlis_Needed_Files_Checksums.sfv in your hak directory, and you can check the .hak files. The .zip, .rar and .tlk will be reported as missing, but it won't change the comparison results for what is there. http://code.kliu.org/hashcheck/ is a very simple to use application for Windows that can do both (works in Windows 10). For Mac, checkSum+ at http://www.julifos.com/soft/checksum/index.html should work the same way. If someone has a better Mac program suggestion, please let me know, and I'll update this. I'll let the *nix users to decide on what one they like best, but all operating systems have a long list to choose from (Google is there to be used), with varying learning curves and functionality.

The Avlis_Needed_Files_Checksums.sfv file is formatted with maximum compatibility in mind. It uses Unix EoL (End of Line) format and UTF-8 encoding, so it should work in any .sfv application and OS. Unfortunately it won't be very readable in less advanced text readers, like the default Windows notepad, since that needs carriage returns to start a new line. Unix formatting only uses line feeds (not the CR+LF used in Windows), so you'll probably see one long line of text. This text file is a redone copy of the Avlis_Needed_Files_Checksums.sfv, but uses the usual DOS/Windows CR+LF End of Line characters, and ANSI formatting for readability. All of the CRC values can be used for individual file comparison from either file.

The lists below are all formatted as ["File Name" "Checksum"], so the number after each File Name is the correct CRC Checksum value for it.

Compressed download files for the current .hak and .tlk files used by Avlis. (.zip/.rar)
Note: The Avlis All-in-one (avlis_allinone_20xxxx.7z) file is not included in this, since it changes with every file update. You can still verify the individual hak/tlk files inside it.

avlis_main1_9a.zip 78A1BE45
avlis_main1_9b.zip EBED61C0
avlis_tilem1_v1.zip F41893FE
avlis_tilem2_v1.zip 39F14686
avlis_tileset_v1.zip 9B9CA3F4
avlis_tilet1_v1.zip 8157D669
avlis_tilet2_v1.zip 5648D1A2
avlis_ts_patch01.zip 77787ea6
copap2da.rar E103F0AC
copapanatomy.rar FBACB5B0
copapbaseitem.rar 7AA5EFFF
copapcreature.rar D009EB98
copapheadhand.rar 92D8BAEB
copappheno.rar 4FF5B062
copapplaceable.rar 0C5602C8
copapportrait.rar 7F1DA51F
copaptexture.rar FCB6E46F
copaptlk_4_9c.zip 050e23b0

Current .hak files used by Avlis

avlis_main1_9a.hak B221DD15
avlis_main1_9b.hak BDE3E844
avlis_tilem1_v1.hak 11F1717E
avlis_tilem2_v1.hak 677EFC22
avlis_tileset_v1.hak 79DC5430
avlis_tilet1_v1.hak 260FBB63
avlis_tilet2_v1.hak D567C0A1
avlis_ts_patch01.hak 4591a521
copap2da.hak 6676E656
copapanatomy.hak 115C1F9A
copapbaseitem.hak 1AF4C028
copapcreature.hak 20608BB0
copapheadhand.hak 86798549
copappheno.hak 86D08FCC
copapplaceable.hak 2B965F8C
copapportrait.hak 23B96DB8
copaptexture.hak CD25FBBA

The current Avlis .tlk

copaptlk_4_9c.tlk 190fa448