Dapos

Welcome! This repository store DPoS blockchain system running on Tendermint Core written in Java utilizing grpc interface.

Software Specs:

• Db engine: Jetbrains Xodus
• Main Framework: Spring Boot
• Web server: Tomcat Embedded
• Type of api: REST

Features (planned, in-development):

• Multisignature accounts/transactions
• Four types of accounts (bitcoin|ethereum-compatible, validator and custom ed25519 addresses)
• Delegation/unbonding of stakes
• Smart contracts on JS
• Zero-fee transactions (Fee providers)
• Encrypted messaging
• Assets tokenization (currencies)
• Multisend transactions
• Scaled by height blockchain config (different block time, tps, block size and block max gas)

How to run

1. Install java 11 from official java site. Set JAVA_HOME env variable to point on jdk folder, Set PATH env variable to point on jdk/bin folder.
2. Check your java installed: java -version. Sample output:

         openjdk version "11.0.6" 2020-01-14
         OpenJDK Runtime Environment GraalVM CE 19.3.1 (build 11.0.6+9-jvmci-19.3-b07)
         4OpenJDK 64-Bit Server VM GraalVM CE 19.3.1 (build 11.0.6+9-jvmci-19.3-b07, mixed mode, sharing)
   

3. Clone this repository master branch.
4. Clone tendermint core repository from tendermint repo
5. Install go from the official site
6. Check your go installation by executing go version Sample output: go version go1.14 linux/amd64
7. Install make, for Ubuntu sudo apt-get install make
8. Go to the tendermint root directory and perform git checkout v0.32.8 - last stable version, which works with java grpc.
9. Then execute make tools then make install the make build
10. Execute tendermint version . Output MUST BE: 0.32.8-14e04f76, reinstall tendermint in other cases, do not proceed, since project will not be operational.
11. Go to the dapos root directory and execute ./gradlew bootRun
12. Init tendermint and start node: tendermint init, then tendermint node --abci grpc --proxy_app tcp://127.0.0.1:26658
13. You've done. Enjoy!