├── .gitattributes ├── .gitignore ├── SimpleBlockchain Java by @ivan-liljeqvist ├── SimpleBlockchain.iml ├── out │ └── production │ │ └── SimpleBlockchain │ │ ├── Block.class │ │ └── Main.class └── src │ ├── Block.java │ └── Main.java ├── SimpleBlockchain.sln └── SimpleBlockchain ├── App.config ├── Block.cs ├── Program.cs ├── Properties └── AssemblyInfo.cs ├── SimpleBlockchain.csproj └── Transaction.cs /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). Diff markers may cause the following 21 | # file extensions to fail to load in VS. An alternative would be to treat 22 | # these files as binary and thus will always conflict and require user 23 | # intervention with every merge. To do so, just uncomment the entries below 24 | ############################################################################### 25 | #*.sln merge=binary 26 | #*.csproj merge=binary 27 | #*.vbproj merge=binary 28 | #*.vcxproj merge=binary 29 | #*.vcproj merge=binary 30 | #*.dbproj merge=binary 31 | #*.fsproj merge=binary 32 | #*.lsproj merge=binary 33 | #*.wixproj merge=binary 34 | #*.modelproj merge=binary 35 | #*.sqlproj merge=binary 36 | #*.wwaproj merge=binary 37 | 38 | ############################################################################### 39 | # behavior for image files 40 | # 41 | # image files are treated as binary by default. 42 | ############################################################################### 43 | #*.jpg binary 44 | #*.png binary 45 | #*.gif binary 46 | 47 | ############################################################################### 48 | # diff behavior for common document formats 49 | # 50 | # Convert binary document formats to text before diffing them. This feature 51 | # is only available from the command line. Turn it on by uncommenting the 52 | # entries below. 53 | ############################################################################### 54 | #*.doc diff=astextplain 55 | #*.DOC diff=astextplain 56 | #*.docx diff=astextplain 57 | #*.DOCX diff=astextplain 58 | #*.dot diff=astextplain 59 | #*.DOT diff=astextplain 60 | #*.pdf diff=astextplain 61 | #*.PDF diff=astextplain 62 | #*.rtf diff=astextplain 63 | #*.RTF diff=astextplain 64 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | 4 | # User-specific files 5 | *.suo 6 | *.user 7 | *.userosscache 8 | *.sln.docstates 9 | 10 | # User-specific files (MonoDevelop/Xamarin Studio) 11 | *.userprefs 12 | 13 | # Build results 14 | [Dd]ebug/ 15 | [Dd]ebugPublic/ 16 | [Rr]elease/ 17 | [Rr]eleases/ 18 | x64/ 19 | x86/ 20 | bld/ 21 | [Bb]in/ 22 | [Oo]bj/ 23 | [Ll]og/ 24 | 25 | # Visual Studio 2015 cache/options directory 26 | .vs/ 27 | # Uncomment if you have tasks that create the project's static files in wwwroot 28 | #wwwroot/ 29 | 30 | # MSTest test Results 31 | [Tt]est[Rr]esult*/ 32 | [Bb]uild[Ll]og.* 33 | 34 | # NUNIT 35 | *.VisualState.xml 36 | TestResult.xml 37 | 38 | # Build Results of an ATL Project 39 | [Dd]ebugPS/ 40 | [Rr]eleasePS/ 41 | dlldata.c 42 | 43 | # DNX 44 | project.lock.json 45 | project.fragment.lock.json 46 | artifacts/ 47 | 48 | *_i.c 49 | *_p.c 50 | *_i.h 51 | *.ilk 52 | *.meta 53 | *.obj 54 | *.pch 55 | *.pdb 56 | *.pgc 57 | *.pgd 58 | *.rsp 59 | *.sbr 60 | *.tlb 61 | *.tli 62 | *.tlh 63 | *.tmp 64 | *.tmp_proj 65 | *.log 66 | *.vspscc 67 | *.vssscc 68 | .builds 69 | *.pidb 70 | *.svclog 71 | *.scc 72 | 73 | # Chutzpah Test files 74 | _Chutzpah* 75 | 76 | # Visual C++ cache files 77 | ipch/ 78 | *.aps 79 | *.ncb 80 | *.opendb 81 | *.opensdf 82 | *.sdf 83 | *.cachefile 84 | *.VC.db 85 | *.VC.VC.opendb 86 | 87 | # Visual Studio profiler 88 | *.psess 89 | *.vsp 90 | *.vspx 91 | *.sap 92 | 93 | # TFS 2012 Local Workspace 94 | $tf/ 95 | 96 | # Guidance Automation Toolkit 97 | *.gpState 98 | 99 | # ReSharper is a .NET coding add-in 100 | _ReSharper*/ 101 | *.[Rr]e[Ss]harper 102 | *.DotSettings.user 103 | 104 | # JustCode is a .NET coding add-in 105 | .JustCode 106 | 107 | # TeamCity is a build add-in 108 | _TeamCity* 109 | 110 | # DotCover is a Code Coverage Tool 111 | *.dotCover 112 | 113 | # NCrunch 114 | _NCrunch_* 115 | .*crunch*.local.xml 116 | nCrunchTemp_* 117 | 118 | # MightyMoose 119 | *.mm.* 120 | AutoTest.Net/ 121 | 122 | # Web workbench (sass) 123 | .sass-cache/ 124 | 125 | # Installshield output folder 126 | [Ee]xpress/ 127 | 128 | # DocProject is a documentation generator add-in 129 | DocProject/buildhelp/ 130 | DocProject/Help/*.HxT 131 | DocProject/Help/*.HxC 132 | DocProject/Help/*.hhc 133 | DocProject/Help/*.hhk 134 | DocProject/Help/*.hhp 135 | DocProject/Help/Html2 136 | DocProject/Help/html 137 | 138 | # Click-Once directory 139 | publish/ 140 | 141 | # Publish Web Output 142 | *.[Pp]ublish.xml 143 | *.azurePubxml 144 | # TODO: Comment the next line if you want to checkin your web deploy settings 145 | # but database connection strings (with potential passwords) will be unencrypted 146 | #*.pubxml 147 | *.publishproj 148 | 149 | # Microsoft Azure Web App publish settings. Comment the next line if you want to 150 | # checkin your Azure Web App publish settings, but sensitive information contained 151 | # in these scripts will be unencrypted 152 | PublishScripts/ 153 | 154 | # NuGet Packages 155 | *.nupkg 156 | # The packages folder can be ignored because of Package Restore 157 | **/packages/* 158 | # except build/, which is used as an MSBuild target. 159 | !**/packages/build/ 160 | # Uncomment if necessary however generally it will be regenerated when needed 161 | #!**/packages/repositories.config 162 | # NuGet v3's project.json files produces more ignoreable files 163 | *.nuget.props 164 | *.nuget.targets 165 | 166 | # Microsoft Azure Build Output 167 | csx/ 168 | *.build.csdef 169 | 170 | # Microsoft Azure Emulator 171 | ecf/ 172 | rcf/ 173 | 174 | # Windows Store app package directories and files 175 | AppPackages/ 176 | BundleArtifacts/ 177 | Package.StoreAssociation.xml 178 | _pkginfo.txt 179 | 180 | # Visual Studio cache files 181 | # files ending in .cache can be ignored 182 | *.[Cc]ache 183 | # but keep track of directories ending in .cache 184 | !*.[Cc]ache/ 185 | 186 | # Others 187 | ClientBin/ 188 | ~$* 189 | *~ 190 | *.dbmdl 191 | *.dbproj.schemaview 192 | *.jfm 193 | *.pfx 194 | *.publishsettings 195 | node_modules/ 196 | orleans.codegen.cs 197 | 198 | # Since there are multiple workflows, uncomment next line to ignore bower_components 199 | # (https://github.com/github/gitignore/pull/1529#issuecomment-104372622) 200 | #bower_components/ 201 | 202 | # RIA/Silverlight projects 203 | Generated_Code/ 204 | 205 | # Backup & report files from converting an old project file 206 | # to a newer Visual Studio version. Backup files are not needed, 207 | # because we have git ;-) 208 | _UpgradeReport_Files/ 209 | Backup*/ 210 | UpgradeLog*.XML 211 | UpgradeLog*.htm 212 | 213 | # SQL Server files 214 | *.mdf 215 | *.ldf 216 | 217 | # Business Intelligence projects 218 | *.rdl.data 219 | *.bim.layout 220 | *.bim_*.settings 221 | 222 | # Microsoft Fakes 223 | FakesAssemblies/ 224 | 225 | # GhostDoc plugin setting file 226 | *.GhostDoc.xml 227 | 228 | # Node.js Tools for Visual Studio 229 | .ntvs_analysis.dat 230 | 231 | # Visual Studio 6 build log 232 | *.plg 233 | 234 | # Visual Studio 6 workspace options file 235 | *.opt 236 | 237 | # Visual Studio LightSwitch build output 238 | **/*.HTMLClient/GeneratedArtifacts 239 | **/*.DesktopClient/GeneratedArtifacts 240 | **/*.DesktopClient/ModelManifest.xml 241 | **/*.Server/GeneratedArtifacts 242 | **/*.Server/ModelManifest.xml 243 | _Pvt_Extensions 244 | 245 | # Paket dependency manager 246 | .paket/paket.exe 247 | paket-files/ 248 | 249 | # FAKE - F# Make 250 | .fake/ 251 | 252 | # JetBrains Rider 253 | .idea/ 254 | *.sln.iml 255 | 256 | # CodeRush 257 | .cr/ 258 | 259 | # Python Tools for Visual Studio (PTVS) 260 | __pycache__/ 261 | *.pyc -------------------------------------------------------------------------------- /SimpleBlockchain Java by @ivan-liljeqvist/SimpleBlockchain.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /SimpleBlockchain Java by @ivan-liljeqvist/out/production/SimpleBlockchain/Block.class: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AshV/Simple-Blockchain-in-C-Sharp/08d2241d24788857b8e93ecebead89f31a5a522f/SimpleBlockchain Java by @ivan-liljeqvist/out/production/SimpleBlockchain/Block.class -------------------------------------------------------------------------------- /SimpleBlockchain Java by @ivan-liljeqvist/out/production/SimpleBlockchain/Main.class: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AshV/Simple-Blockchain-in-C-Sharp/08d2241d24788857b8e93ecebead89f31a5a522f/SimpleBlockchain Java by @ivan-liljeqvist/out/production/SimpleBlockchain/Main.class -------------------------------------------------------------------------------- /SimpleBlockchain Java by @ivan-liljeqvist/src/Block.java: -------------------------------------------------------------------------------- 1 | import java.lang.reflect.Array; 2 | import java.util.Arrays; 3 | 4 | /** 5 | * Created by ivanliljeqvist on 2017-08-31. 6 | */ 7 | public class Block { 8 | 9 | private int previousHash; 10 | private String[] transactions; 11 | 12 | private int blockHash; 13 | 14 | public Block(int previousHash, String[] transactions) { 15 | this.previousHash = previousHash; 16 | this.transactions = transactions; 17 | 18 | Object[] contens = {Arrays.hashCode(transactions), previousHash}; 19 | this.blockHash = Arrays.hashCode(contens); 20 | 21 | } 22 | 23 | public int getPreviousHash() { 24 | return previousHash; 25 | } 26 | 27 | public String[] getTransaction() { 28 | return transactions; 29 | } 30 | 31 | public int getBlockHash() { 32 | return blockHash; 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /SimpleBlockchain Java by @ivan-liljeqvist/src/Main.java: -------------------------------------------------------------------------------- 1 | import java.util.Arrays; 2 | 3 | public class Main { 4 | 5 | /** 6 | 7 | Hash = digital signature 8 | 9 | Each block will have: 10 | 11 | List of transactions 12 | Previous Hash 13 | 14 | Hash 15 | 16 | */ 17 | 18 | public static void main(String[] args) { 19 | 20 | String[] genesisTransactions = {"a satoshi sent ivan 999900 bitcoin","hal finney sent 10 bitcoins to ivan"}; 21 | Block genesisBlock = new Block(0, genesisTransactions); 22 | 23 | String[] block2Transactions = {"ivan sent 10 bitcoin to satoshi", "satoshi sent 10 bitcoin to starbuck"}; 24 | Block block2 = new Block(genesisBlock.getBlockHash(), block2Transactions); 25 | 26 | String[] block3Transactions = {"ivan sent 999 bitcoin to my mom"}; 27 | Block block3 = new Block(block2.getBlockHash(), block3Transactions); 28 | 29 | System.out.println("Hash of genesis block:"); 30 | System.out.println(genesisBlock.getBlockHash()); 31 | 32 | System.out.println("Hash of block 2:"); 33 | System.out.println(block2.getBlockHash()); 34 | 35 | System.out.println("Hash of block 3:"); 36 | System.out.println(block3.getBlockHash()); 37 | 38 | } 39 | 40 | 41 | } 42 | -------------------------------------------------------------------------------- /SimpleBlockchain.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio 15 4 | VisualStudioVersion = 15.0.26730.12 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SimpleBlockchain", "SimpleBlockchain\SimpleBlockchain.csproj", "{1A476277-0B36-41D9-B778-7E10AF85D8C4}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Any CPU = Debug|Any CPU 11 | Release|Any CPU = Release|Any CPU 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {1A476277-0B36-41D9-B778-7E10AF85D8C4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 15 | {1A476277-0B36-41D9-B778-7E10AF85D8C4}.Debug|Any CPU.Build.0 = Debug|Any CPU 16 | {1A476277-0B36-41D9-B778-7E10AF85D8C4}.Release|Any CPU.ActiveCfg = Release|Any CPU 17 | {1A476277-0B36-41D9-B778-7E10AF85D8C4}.Release|Any CPU.Build.0 = Release|Any CPU 18 | EndGlobalSection 19 | GlobalSection(SolutionProperties) = preSolution 20 | HideSolutionNode = FALSE 21 | EndGlobalSection 22 | GlobalSection(ExtensibilityGlobals) = postSolution 23 | SolutionGuid = {061E8D0B-A089-4FF7-9744-0BCBCA20873C} 24 | EndGlobalSection 25 | EndGlobal 26 | -------------------------------------------------------------------------------- /SimpleBlockchain/App.config: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /SimpleBlockchain/Block.cs: -------------------------------------------------------------------------------- 1 | namespace SimpleBlockchain 2 | { 3 | class Block 4 | { 5 | private int previousHash { get; } 6 | 7 | public Transaction[] transactions { get; } 8 | 9 | public int blockhash { get; } 10 | 11 | public Block(int previousHash, Transaction[] transactions) 12 | { 13 | this.previousHash = previousHash; 14 | this.transactions = transactions; 15 | 16 | object[] contents = { transactions, GetHashCode(), previousHash }; 17 | this.blockhash = contents.GetHashCode(); 18 | } 19 | } 20 | } -------------------------------------------------------------------------------- /SimpleBlockchain/Program.cs: -------------------------------------------------------------------------------- 1 | using static System.Console; 2 | 3 | namespace SimpleBlockchain 4 | { 5 | class Program 6 | { 7 | static void Main(string[] args) 8 | { 9 | Transaction[] genesisTransactions = { 10 | new Transaction{ From="Satoshi", To="Ashish", Value=100000000 }, 11 | new Transaction{ From="Avinash", To="Ashish", Value=1 } 12 | }; 13 | var genesisBlock = new Block(0, genesisTransactions); 14 | WriteLine("Hash of genesis block:"); 15 | WriteLine(genesisBlock.blockhash); 16 | 17 | Transaction[] block2Transactions = { 18 | new Transaction{ From="Ashish", To="Satoshi", Value=50 }, 19 | new Transaction{ From="Satoshi", To="Relaince", Value=50 } 20 | }; 21 | var block2 = new Block(genesisBlock.blockhash, block2Transactions); 22 | WriteLine("Hash of block 2:"); 23 | WriteLine(block2.blockhash); 24 | 25 | Transaction[] block3Transactions = { 26 | new Transaction{ From="Ashish", To="RBI", Value=20000 } 27 | }; 28 | var block3 = new Block(block2.blockhash, block3Transactions); 29 | WriteLine("Hash of block 3:"); 30 | WriteLine(block3.blockhash); 31 | } 32 | } 33 | } -------------------------------------------------------------------------------- /SimpleBlockchain/Properties/AssemblyInfo.cs: -------------------------------------------------------------------------------- 1 | using System.Reflection; 2 | using System.Runtime.CompilerServices; 3 | using System.Runtime.InteropServices; 4 | 5 | // General Information about an assembly is controlled through the following 6 | // set of attributes. Change these attribute values to modify the information 7 | // associated with an assembly. 8 | [assembly: AssemblyTitle("SimpleBlockchain")] 9 | [assembly: AssemblyDescription("")] 10 | [assembly: AssemblyConfiguration("")] 11 | [assembly: AssemblyCompany("")] 12 | [assembly: AssemblyProduct("SimpleBlockchain")] 13 | [assembly: AssemblyCopyright("Copyright © 2017")] 14 | [assembly: AssemblyTrademark("")] 15 | [assembly: AssemblyCulture("")] 16 | 17 | // Setting ComVisible to false makes the types in this assembly not visible 18 | // to COM components. If you need to access a type in this assembly from 19 | // COM, set the ComVisible attribute to true on that type. 20 | [assembly: ComVisible(false)] 21 | 22 | // The following GUID is for the ID of the typelib if this project is exposed to COM 23 | [assembly: Guid("1a476277-0b36-41d9-b778-7e10af85d8c4")] 24 | 25 | // Version information for an assembly consists of the following four values: 26 | // 27 | // Major Version 28 | // Minor Version 29 | // Build Number 30 | // Revision 31 | // 32 | // You can specify all the values or you can default the Build and Revision Numbers 33 | // by using the '*' as shown below: 34 | // [assembly: AssemblyVersion("1.0.*")] 35 | [assembly: AssemblyVersion("1.0.0.0")] 36 | [assembly: AssemblyFileVersion("1.0.0.0")] 37 | -------------------------------------------------------------------------------- /SimpleBlockchain/SimpleBlockchain.csproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | Debug 6 | AnyCPU 7 | {1A476277-0B36-41D9-B778-7E10AF85D8C4} 8 | Exe 9 | SimpleBlockchain 10 | SimpleBlockchain 11 | v4.7 12 | 512 13 | true 14 | 15 | 16 | AnyCPU 17 | true 18 | full 19 | false 20 | bin\Debug\ 21 | DEBUG;TRACE 22 | prompt 23 | 4 24 | 25 | 26 | AnyCPU 27 | pdbonly 28 | true 29 | bin\Release\ 30 | TRACE 31 | prompt 32 | 4 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | -------------------------------------------------------------------------------- /SimpleBlockchain/Transaction.cs: -------------------------------------------------------------------------------- 1 | namespace SimpleBlockchain 2 | { 3 | class Transaction 4 | { 5 | public string From { get; set; } 6 | 7 | public string To { get; set; } 8 | 9 | public double Value { get; set; } 10 | } 11 | } --------------------------------------------------------------------------------