Quote:
I've said before, If anyone needs an old copy of AnyDVD (registered to me) which will solve the problem, I can send it. Just send me a private message and I will get it to you.

Neil

Quote:
• Does this affect (more) recent updates of AnyDVD? Which version(s) give the proper DiscID?

Quote:
• Does this affect UHD DiscID, or is it mostly prone to give invalid DiscID's for DVD's?

Quote:
• What are the reliable workarounds, and are there different scenarios?

Quote:
I have recently bought a BD 4K UHD drive. Pioneer BDR-212UHT to be specific. With it, I intend to submit all UHD discs I have bought and will buy.
I have a "monster PC" for that drive.
Will I (we!) encounter any problems?

I also have another "work" PC, on which I run both Win 10 and Win 7, and I have another BD drive for it. So thusly I could contribute non 4K BD DiscID's with that setup.

I absolutely do not want to poison the DB neither locally nor online with bad DiscID's and I must say I am also worried that those that are contributed nowadays may be faulty.

Quote:
I would definitely consider purchasing an AnyDVD license given it will work as intended.

Quote:
Last but not least: has anyone tried to actually contact Microsoft about this?
I absolutely believe in trying that. If need be, we could team up to make our voices heard more loudly.

Quote:
However I don't really grasp where in all this the problems lie: Win 10 itself, AnyDVD or the optical drives? Or DVDProfiler?

Quote:
Quoting marcelb7:
The unfortunate thing is that the new DVD DiscIDs (the ones that are scanned without running AnyDVD) are not recognized by the DVDP program. That would require a program update.... Ken? Hello? Anyone??

Quote:
The problem is purely down to Windows 10 and only affects DVDs. The 1809 update seems to have started the issue.

AnyDVD, for now, solves the problem by calling the Disc ID direct from the drive, bypassing Windows altogether. That is why I have offered my (older but functional) copy for free to anyone who wants it, it's not worth forking out money to solve the issue for now.

Any other version of Windows is unaffected. Blu-rays are unaffected.

Quote:
If there's no DiscID info in the database (either in the Disc Info field, or as a standalone DiscID profile), then we should submit the regular DiscID, without the interference of AnyDVD. We should consider that most contributors are not familiar with the disc id issues.

Quote:
Initially, I ran Process Monitor tool and an API monitoring tool to check what happens when dvdpro.exe adds a DVD Disc ID in the database. I could see files in the VIDEO_TS directory were being read and some attributes such as filename, file size and date and times were also read.  But all the read data was correct and matched the values found on the DVD.

I ran the same test on many DVDs over many versions of Windows (XPsp2, Win7sp1, Win10v1709, Win10v1809, v1903, v1909) and found no evidence of corrupted data read from the DVDs.

Eventually, I did more research on the 64-bit CRC and found Microsoft's US patent which descibed the concept of the unique 64-bit CRC and how it could support bookmarking.  I learnt that there were four steps in the calculation process:

Step 1:
The filenames in the VIDEO_TS directory are collected and sorted alphabetically into a list

Step 2:
For each filename in the list, the following structure is filled out and added to the CRC (all data fields are in LSB first):
==> unsigned 64 bit Integer: dateTime (the time elapsed in 100 nanosecond intervals from Jan. 1, 1601)
==> unsigned 32 bit Integer: FileSize
==> BYTE: Filename [filename Length]
==> BYTE: FilenameTermNull=0

Step 3:
If present, the first 65,536 bytes of "VIDEO_TS.IFO are read and added to the CRC (if smaller then the entire file is added)

Step 4:
If present, the first 65,536 bytes of "VTS_01_0.IFO are read and added to the CRC (if smaller then the entire file is added)

In a nutshell, each file's attributes in the VIDEO_TS directory and the first 65,536 bytes of data from VIDEO_TS.IFO and VTS_01_0.IFO are the inputs added to the concatenated binary polynomial equation that generates the 64-bit CRC.

With the above steps in mind, I revisited the previous capture files I had and it finally dawned on me something did change with Win10 ver1809.

On every Windows platform, steps 2,3 and 4 were being carried out properly.
On the other hand, step 1 had changed:
==> Prior to Win10 ver1809, step 1 was being carried out properly.
==> From Win10 ver 1809 and onwards, only a subset of files in the VIDEO_TS directory were being read (VIDEO_TS.IFO, BUP and VOB, and VTS_01_0.IFO, BUP and VOB).

I can't give you a reason as to why the algorithm for calculating the DVD's unique 64-bit CRC changed, but I do note that both Microsoft's Windows Media Center application and Windows DVD Player application were both forcibly removed by the Win10 ver1809 upgrade, and both used the bookmarking feature via the DVD's unique 64-bit CRC!

Was the change just collateral damage?  I'll leave that to someone else to take up the gauntlet.  All I know is I finally convinced myself that CDROM.SYS was not the problem.

Quote:
Quoting proverbs311031:

Quote:
disclosure: I've been in IT for over 25 years

long story short: when replacing the existing driver with older driver provided by iPatsa, my DVD-RW drive does not show as installed, even with all matching account permissions including TrustedInstaller when compared to existing build 18363 cdrom.sys driver, so there must be another "software hook or call being made".

Any suggestions on what I might be missing?

Hmm, I tackled the problem differently, I started to work the problem from DVD profiler to the drive, not the other way round.

Initially, I ran Process Monitor tool and an API monitoring tool to check what happens when dvdpro.exe adds a DVD Disc ID in the database. I could see files in the VIDEO_TS directory were being read and some attributes such as filename, file size and date and times were also read.  But all the read data was correct and matched the values found on the DVD.

I ran the same test on many DVDs over many versions of Windows (XPsp2, Win7sp1, Win10v1709, Win10v1809, v1903, v1909) and found no evidence of corrupted data read from the DVDs.

Eventually, I did more research on the 64-bit CRC and found Microsoft's US patent which descibed the concept of the unique 64-bit CRC and how it could support bookmarking.  I learnt that there were four steps in the calculation process:

Step 1:
The filenames in the VIDEO_TS directory are collected and sorted alphabetically into a list

Step 2:
For each filename in the list, the following structure is filled out and added to the CRC (all data fields are in LSB first):
==> unsigned 64 bit Integer: dateTime (the time elapsed in 100 nanosecond intervals from Jan. 1, 1601)
==> unsigned 32 bit Integer: FileSize
==> BYTE: Filename [filename Length]
==> BYTE: FilenameTermNull=0

Step 3:
If present, the first 65,536 bytes of "VIDEO_TS.IFO are read and added to the CRC (if smaller then the entire file is added)

Step 4:
If present, the first 65,536 bytes of "VTS_01_0.IFO are read and added to the CRC (if smaller then the entire file is added)

In a nutshell, each file's attributes in the VIDEO_TS directory and the first 65,536 bytes of data from VIDEO_TS.IFO and VTS_01_0.IFO are the inputs added to the concatenated binary polynomial equation that generates the 64-bit CRC.

With the above steps in mind, I revisited the previous capture files I had and it finally dawned on me something did change with Win10 ver1809.

On every Windows platform, steps 2,3 and 4 were being carried out properly.
On the other hand, step 1 had changed:
==> Prior to Win10 ver1809, step 1 was being carried out properly.
==> From Win10 ver 1809 and onwards, only a subset of files in the VIDEO_TS directory were being read (VIDEO_TS.IFO, BUP and VOB, and VTS_01_0.IFO, BUP and VOB).

I can't give you a reason as to why the algorithm for calculating the DVD's unique 64-bit CRC changed, but I do note that both Microsoft's Windows Media Center application and Windows DVD Player application were both forcibly removed by the Win10 ver1809 upgrade, and both used the bookmarking feature via the DVD's unique 64-bit CRC!

Was the change just collateral damage?  I'll leave that to someone else to take up the gauntlet.  All I know is I finally convinced myself that CDROM.SYS was not the problem.

Quote:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;

internal static class Program
{
    public static void Main()
    {
        Console.WriteLine("Good way:");
        string eGood = DiscIdCalculator.Calculate("E:");
        Console.WriteLine(eGood);
        Console.WriteLine("Bad way:");
        string eBad = DiscIdCalculator.CalculateForWin10_1809_AndHigher("E");
        Console.WriteLine(eBad);

        Console.WriteLine("Good way:");
        string fGood = DiscIdCalculator.Calculate(@"F:\");
        Console.WriteLine(fGood);
        Console.WriteLine("Bad way:");
        string fBad = DiscIdCalculator.CalculateForWin10_1809_AndHigher("F:\\");
        Console.WriteLine(fBad);

        Console.ReadLine();
    }
}

/// <summary>
/// Based on US patent US 6,871,012 B1
/// http://patentimages.storage.googleapis.com/pdfs/US6871012.pdf
/// </summary>
public static class DiscIdCalculator
{
    private const int MaxReadOutLength = 65_536;

    private const string VideoFolder = "VIDEO_TS";

    private static readonly DateTime _baseDate = new DateTime(1601, 1, 1);

    public static string Calculate(string driveLetter)
    {
        DriveInfo drive = GetDrive(driveLetter);

        //Step 1:
        //The filenames of the VIDEO_TS directory are collected and sorted alphabetically
        IEnumerable<string> fileNames = Directory.GetFiles(Path.Combine(drive.Name, VideoFolder), "*.*", SearchOption.TopDirectoryOnly);

        string result = Calculate(drive, fileNames);

        return result;
    }

    /// <summary>
    /// Since Windows 10 version 1809 the calculation algorithm has changed which leads to different (i.e. faulty) disc Ids.
    /// This method exists to reproduce the faulty results.
    /// </summary>
    public static string CalculateForWin10_1809_AndHigher(string driveLetter)
    {
        DriveInfo drive = GetDrive(driveLetter);

        //Step 1:
        //The filenames of the VIDEO_TS directory are collected and sorted alphabetically, but only VIDEO_TS.* and VTS_01_0.*
        IEnumerable<string> fileNames = Directory.GetFiles(Path.Combine(drive.Name, VideoFolder), "VIDEO_TS.*", SearchOption.TopDirectoryOnly)
            .Concat(Directory.GetFiles(Path.Combine(drive.Name, VideoFolder), "VTS_01_0.*", SearchOption.TopDirectoryOnly));

        string result = Calculate(drive, fileNames);

        return result;
    }

    private static DriveInfo GetDrive(string driveLetter)
    {
        if (string.IsNullOrEmpty(driveLetter))
        {
            throw new ArgumentException(nameof(driveLetter));
        }

        DriveInfo drive = new DriveInfo(driveLetter);

        if (!drive.IsReady)
        {
            throw new ArgumentException("Drive is not ready!", nameof(driveLetter));
        }

        return drive;
    }

    private static string Calculate(DriveInfo drive, IEnumerable<string> fileNames)
    {
        List<FileInfo> files = fileNames.Select(fileName => new FileInfo(fileName)).ToList();

        string result = Calculate(drive, files);

        return result;
    }

    private static string Calculate(DriveInfo drive, List<FileInfo> files)
    {
        files.Sort(CompareFiles);

        List<byte[]> hashes = new List<byte[]>();

        //Step 2:
        //The file headers from each file are computed in the CRC.
        foreach (FileInfo file in files)
        {
            AddFileMetaHash(file, hashes);
        }

        //Step 3:
        //The data from the VMGI file ("VIDEO_TS\VIDEO_TS.IFO") is computed in the CRC.
        //If present, the first 65,536 bytes of "VIDEO_TS.IFO are read and added to the CRC (if smaller then the entire file is added)
        AddFileContentHash(drive, "VIDEO_TS.IFO", hashes);

        //Note: On page 19 the patents talks about "the first VTSI file ("VIDEO_TS\VTS_xx_0.IFO")" but on page 20, it explicitly specifies "VTS_01_0.IFO".
        //Step 4:
        //The data from the first VTSI file ("VIDEO_TS\VTS_xx_0.IFO") is computed in the CRC.
        string vtsFileName = GetVtsFileName(drive);
        //If present, the first 65,536 bytes of "VTS_01_0.IFO" are read and added to the CRC (if smaller then the entire file is added)
        AddFileContentHash(drive, vtsFileName, hashes);

        byte[] hashBytes = hashes.SelectMany(bytes => bytes).ToArray();

        ulong hash = Crc64.Calculate(hashBytes);

        string result = hash.ToString("X");

        return result;
    }

    private static int CompareFiles(FileInfo left, FileInfo right)
    {
        int compare = left.Name.ToUpper().CompareTo(right.Name.ToUpper());

        return compare;
    }

    private static void AddFileMetaHash(FileInfo file, List<byte[]> hashes)
    {
        //For each filename in the list, the following structure is filled out and added to the CRC (all data fields are in LSB first):
        //- Unsigned 64 bit integer: dateTime(the time elapsed in 100 nanosecond intervals from Jan. 1, 1601)
        //- unsigned 32 bit integer: dWFileSiZe
        //- BYTE bFilename[filename Length]
        //- BYTE bFilenameTermNull = 0

        TimeSpan diff = file.CreationTimeUtc - _baseDate;

        //unsigned 64 bit Integer: dateTime (the time elapsed in 100 nanosecond intervals from Jan. 1, 1601)
        ulong hundredNanoSeconds = (ulong)(diff.TotalMilliseconds * 10_000);

        byte[] nanoSecondBytes = BitConverter.GetBytes(hundredNanoSeconds);

        //unsigned 32 bit Integer: FileSize
        uint fileSize = (uint)file.Length;

        byte[] fileSizeBytes = BitConverter.GetBytes(fileSize);

        //BYTE: Filename [filename Length]
        byte[] nameBytes = Encoding.UTF8.GetBytes(file.Name.ToUpper());

        //all data fields are in LSB first
        if (!BitConverter.IsLittleEndian)
        {
            Array.Reverse(nanoSecondBytes);
            Array.Reverse(fileSizeBytes);
            Array.Reverse(nameBytes); //untested, if Encoding.UTF8.GetBytes() also needs to be reversed on a BigEndian system
        }

        List<byte[]> fileHashes = new List<byte[]>()
        {
            nanoSecondBytes,
            fileSizeBytes,
            nameBytes,
            new byte[] { 0 }, //BYTE: FilenameTermNull=0
        };

        byte[] fileHash = fileHashes.SelectMany(bytes => bytes).ToArray();

        hashes.Add(fileHash);
    }

    private static void AddFileContentHash(DriveInfo drive, string fileName, List<byte[]> hashes)
    {
        FileInfo file = new FileInfo(Path.Combine(Path.Combine(drive.Name, VideoFolder), fileName));

        //If present
        if (file.Exists)
        {
            using (FileStream fs = new FileStream(file.FullName, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                using (BinaryReader br = new BinaryReader(fs))
                {
                    //the first 65,536 bytes read and added to the CRC (if smaller then the entire file is added)
                    int bytesToRead = file.Length >= MaxReadOutLength
                        ? MaxReadOutLength
                        : (int)file.Length;

                    byte[] content = br.ReadBytes(bytesToRead);

                    hashes.Add(content);
                }
            }
        }
    }

    private static string GetVtsFileName(DriveInfo drive)
    {
        IEnumerable<string> fileNames = Directory.GetFiles(Path.Combine(drive.Name, VideoFolder), "VTS_*_0.IFO", SearchOption.TopDirectoryOnly);

        List<FileInfo> files = fileNames.Select(fileName => new FileInfo(fileName)).ToList();

        files.Sort(CompareFiles);

        string result = files.FirstOrDefault().Name ?? "VTS_01_0.IFO";

        return result;
    }

    private static class Crc64
    {
        /// <summary>
        /// source: https://github.com/rdp/dvdid/blob/master/0.2.0a/dvdid-0.2.0a/src/libdvdid/crc64_table.c
        /// </summary>
        private static readonly ulong[] _crc64Table =
        {
            0x0000_0000_0000_0000, 0x0809_E8A2_9694_51E9, 0x1013_D145_2D28_A3D2, 0x181A_39E7_BBBC_F23B,
            0x2027_A28A_5A51_47A4, 0x282E_4A28_CCC5_164D, 0x3034_73CF_7779_E476, 0x383D_9B6D_E1ED_B59F,
            0x404F_4514_B4A2_8F48, 0x4846_ADB6_2236_DEA1, 0x505C_9451_998A_2C9A, 0x5855_7CF3_0F1E_7D73,
            0x6068_E79E_EEF3_C8EC, 0x6861_0F3C_7867_9905, 0x707B_36DB_C3DB_6B3E, 0x7872_DE79_554F_3AD7,
            0x809E_8A29_6945_1E90, 0x8897_628B_FFD1_4F79, 0x908D_5B6C_446D_BD42, 0x9884_B3CE_D2F9_ECAB,
            0xA0B9_28A3_3314_5934, 0xA8B0_C001_A580_08DD, 0xB0AA_F9E6_1E3C_FAE6, 0xB8A3_1144_88A8_AB0F,
            0xC0D1_CF3D_DDE7_91D8, 0xC8D8_279F_4B73_C031, 0xD0C2_1E78_F0CF_320A, 0xD8CB_F6DA_665B_63E3,
            0xE0F6_6DB7_87B6_D67C, 0xE8FF_8515_1122_8795, 0xF0E5_BCF2_AA9E_75AE, 0xF8EC_5450_3C0A_2447,
            0x24B1_9099_74C8_4E69, 0x2CB8_783B_E25C_1F80, 0x34A2_41DC_59E0_EDBB, 0x3CAB_A97E_CF74_BC52,
            0x0496_3213_2E99_09CD, 0x0C9F_DAB1_B80D_5824, 0x1485_E356_03B1_AA1F, 0x1C8C_0BF4_9525_FBF6,
            0x64FE_D58D_C06A_C121, 0x6CF7_3D2F_56FE_90C8, 0x74ED_04C8_ED42_62F3, 0x7CE4_EC6A_7BD6_331A,
            0x44D9_7707_9A3B_8685, 0x4CD0_9FA5_0CAF_D76C, 0x54CA_A642_B713_2557, 0x5CC3_4EE0_2187_74BE,
            0xA42F_1AB0_1D8D_50F9, 0xAC26_F212_8B19_0110, 0xB43C_CBF5_30A5_F32B, 0xBC35_2357_A631_A2C2,
            0x8408_B83A_47DC_175D, 0x8C01_5098_D148_46B4, 0x941B_697F_6AF4_B48F, 0x9C12_81DD_FC60_E566,
            0xE460_5FA4_A92F_DFB1, 0xEC69_B706_3FBB_8E58, 0xF473_8EE1_8407_7C63, 0xFC7A_6643_1293_2D8A,
            0xC447_FD2E_F37E_9815, 0xCC4E_158C_65EA_C9FC, 0xD454_2C6B_DE56_3BC7, 0xDC5D_C4C9_48C2_6A2E,
            0x4963_2132_E990_9CD2, 0x416A_C990_7F04_CD3B, 0x5970_F077_C4B8_3F00, 0x5179_18D5_522C_6EE9,
            0x6944_83B8_B3C1_DB76, 0x614D_6B1A_2555_8A9F, 0x7957_52FD_9EE9_78A4, 0x715E_BA5F_087D_294D,
            0x092C_6426_5D32_139A, 0x0125_8C84_CBA6_4273, 0x193F_B563_701A_B048, 0x1136_5DC1_E68E_E1A1,
            0x290B_C6AC_0763_543E, 0x2102_2E0E_91F7_05D7, 0x3918_17E9_2A4B_F7EC, 0x3111_FF4B_BCDF_A605,
            0xC9FD_AB1B_80D5_8242, 0xC1F4_43B9_1641_D3AB, 0xD9EE_7A5E_ADFD_2190, 0xD1E7_92FC_3B69_7079,
            0xE9DA_0991_DA84_C5E6, 0xE1D3_E133_4C10_940F, 0xF9C9_D8D4_F7AC_6634, 0xF1C0_3076_6138_37DD,
            0x89B2_EE0F_3477_0D0A, 0x81BB_06AD_A2E3_5CE3, 0x99A1_3F4A_195F_AED8, 0x91A8_D7E8_8FCB_FF31,
            0xA995_4C85_6E26_4AAE, 0xA19C_A427_F8B2_1B47, 0xB986_9DC0_430E_E97C, 0xB18F_7562_D59A_B895,
            0x6DD2_B1AB_9D58_D2BB, 0x65DB_5909_0BCC_8352, 0x7DC1_60EE_B070_7169, 0x75C8_884C_26E4_2080,
            0x4DF5_1321_C709_951F, 0x45FC_FB83_519D_C4F6, 0x5DE6_C264_EA21_36CD, 0x55EF_2AC6_7CB5_6724,
            0x2D9D_F4BF_29FA_5DF3, 0x2594_1C1D_BF6E_0C1A, 0x3D8E_25FA_04D2_FE21, 0x3587_CD58_9246_AFC8,
            0x0DBA_5635_73AB_1A57, 0x05B3_BE97_E53F_4BBE, 0x1DA9_8770_5E83_B985, 0x15A0_6FD2_C817_E86C,
            0xED4C_3B82_F41D_CC2B, 0xE545_D320_6289_9DC2, 0xFD5F_EAC7_D935_6FF9, 0xF556_0265_4FA1_3E10,
            0xCD6B_9908_AE4C_8B8F, 0xC562_71AA_38D8_DA66, 0xDD78_484D_8364_285D, 0xD571_A0EF_15F0_79B4,
            0xAD03_7E96_40BF_4363, 0xA50A_9634_D62B_128A, 0xBD10_AFD3_6D97_E0B1, 0xB519_4771_FB03_B158,
            0x8D24_DC1C_1AEE_04C7, 0x852D_34BE_8C7A_552E, 0x9D37_0D59_37C6_A715, 0x953E_E5FB_A152_F6FC,
            0x92C6_4265_D321_39A4, 0x9ACF_AAC7_45B5_684D, 0x82D5_9320_FE09_9A76, 0x8ADC_7B82_689D_CB9F,
            0xB2E1_E0EF_8970_7E00, 0xBAE8_084D_1FE4_2FE9, 0xA2F2_31AA_A458_DDD2, 0xAAFB_D908_32CC_8C3B,
            0xD289_0771_6783_B6EC, 0xDA80_EFD3_F117_E705, 0xC29A_D634_4AAB_153E, 0xCA93_3E96_DC3F_44D7,
            0xF2AE_A5FB_3DD2_F148, 0xFAA7_4D59_AB46_A0A1, 0xE2BD_74BE_10FA_529A, 0xEAB4_9C1C_866E_0373,
            0x1258_C84C_BA64_2734, 0x1A51_20EE_2CF0_76DD, 0x024B_1909_974C_84E6, 0x0A42_F1AB_01D8_D50F,
            0x327F_6AC6_E035_6090, 0x3A76_8264_76A1_3179, 0x226C_BB83_CD1D_C342, 0x2A65_5321_5B89_92AB,
            0x5217_8D58_0EC6_A87C, 0x5A1E_65FA_9852_F995, 0x4204_5C1D_23EE_0BAE, 0x4A0D_B4BF_B57A_5A47,
            0x7230_2FD2_5497_EFD8, 0x7A39_C770_C203_BE31, 0x6223_FE97_79BF_4C0A, 0x6A2A_1635_EF2B_1DE3,
            0xB677_D2FC_A7E9_77CD, 0xBE7E_3A5E_317D_2624, 0xA664_03B9_8AC1_D41F, 0xAE6D_EB1B_1C55_85F6,
            0x9650_7076_FDB8_3069, 0x9E59_98D4_6B2C_6180, 0x8643_A133_D090_93BB, 0x8E4A_4991_4604_C252,
            0xF638_97E8_134B_F885, 0xFE31_7F4A_85DF_A96C, 0xE62B_46AD_3E63_5B57, 0xEE22_AE0F_A8F7_0ABE,
            0xD61F_3562_491A_BF21, 0xDE16_DDC0_DF8E_EEC8, 0xC60C_E427_6432_1CF3, 0xCE05_0C85_F2A6_4D1A,
            0x36E9_58D5_CEAC_695D, 0x3EE0_B077_5838_38B4, 0x26FA_8990_E384_CA8F, 0x2EF3_6132_7510_9B66,
            0x16CE_FA5F_94FD_2EF9, 0x1EC7_12FD_0269_7F10, 0x06DD_2B1A_B9D5_8D2B, 0x0ED4_C3B8_2F41_DCC2,
            0x76A6_1DC1_7A0E_E615, 0x7EAF_F563_EC9A_B7FC, 0x66B5_CC84_5726_45C7, 0x6EBC_2426_C1B2_142E,
            0x5681_BF4B_205F_A1B1, 0x5E88_57E9_B6CB_F058, 0x4692_6E0E_0D77_0263, 0x4E9B_86AC_9BE3_538A,
            0xDBA5_6357_3AB1_A576, 0xD3AC_8BF5_AC25_F49F, 0xCBB6_B212_1799_06A4, 0xC3BF_5AB0_810D_574D,
            0xFB82_C1DD_60E0_E2D2, 0xF38B_297F_F674_B33B, 0xEB91_1098_4DC8_4100, 0xE398_F83A_DB5C_10E9,
            0x9BEA_2643_8E13_2A3E, 0x93E3_CEE1_1887_7BD7, 0x8BF9_F706_A33B_89EC, 0x83F0_1FA4_35AF_D805,
            0xBBCD_84C9_D442_6D9A, 0xB3C4_6C6B_42D6_3C73, 0xABDE_558C_F96A_CE48, 0xA3D7_BD2E_6FFE_9FA1,
            0x5B3B_E97E_53F4_BBE6, 0x5332_01DC_C560_EA0F, 0x4B28_383B_7EDC_1834, 0x4321_D099_E848_49DD,
            0x7B1C_4BF4_09A5_FC42, 0x7315_A356_9F31_ADAB, 0x6B0F_9AB1_248D_5F90, 0x6306_7213_B219_0E79,
            0x1B74_AC6A_E756_34AE, 0x137D_44C8_71C2_6547, 0x0B67_7D2F_CA7E_977C, 0x036E_958D_5CEA_C695,
            0x3B53_0EE0_BD07_730A, 0x335A_E642_2B93_22E3, 0x2B40_DFA5_902F_D0D8, 0x2349_3707_06BB_8131,
            0xFF14_F3CE_4E79_EB1F, 0xF71D_1B6C_D8ED_BAF6, 0xEF07_228B_6351_48CD, 0xE70E_CA29_F5C5_1924,
            0xDF33_5144_1428_ACBB, 0xD73A_B9E6_82BC_FD52, 0xCF20_8001_3900_0F69, 0xC729_68A3_AF94_5E80,
            0xBF5B_B6DA_FADB_6457, 0xB752_5E78_6C4F_35BE, 0xAF48_679F_D7F3_C785, 0xA741_8F3D_4167_966C,
            0x9F7C_1450_A08A_23F3, 0x9775_FCF2_361E_721A, 0x8F6F_C515_8DA2_8021, 0x8766_2DB7_1B36_D1C8,
            0x7F8A_79E7_273C_F58F, 0x7783_9145_B1A8_A466, 0x6F99_A8A2_0A14_565D, 0x6790_4000_9C80_07B4,
            0x5FAD_DB6D_7D6D_B22B, 0x57A4_33CF_EBF9_E3C2, 0x4FBE_0A28_5045_11F9, 0x47B7_E28A_C6D1_4010,
            0x3FC5_3CF3_939E_7AC7, 0x37CC_D451_050A_2B2E, 0x2FD6_EDB6_BEB6_D915, 0x27DF_0514_2822_88FC,
            0x1FE2_9E79_C9CF_3D63, 0x17EB_76DB_5F5B_6C8A, 0x0FF1_4F3C_E4E7_9EB1, 0x07F8_A79E_7273_CF58,
        };

        public static ulong Calculate(byte[] data)
        {
            ulong hash = 0xFFFF_FFFF_FFFF_FFFF;

            for (int i = 0; i < data.Length; i++)
            {
                unchecked
                {
                    hash = (hash >> 8) ^ _crc64Table[(data[i] ^ hash) & 0xFF];
                }
            }

            return hash;
        }
    }
}

Quote:
I'm not sure how you "upvote" though.