Private-Blockchain

Project 2, 3 and 4 in Udacitys "Blockchain Developer Nanodegree Program".

Dependencys

• Node.js Framework (currently 8.11.+)

"dependencies": {
    "bitcoinjs-lib": "^4.0.2",
    "bitcoinjs-message": "^2.0.0",
    "body-parser": "^1.18.3",
    "crypto-js": "^3.1.9-1",
    "express": "^4.16.3",
    "hashmap": "^2.3.0",
    "level": "^4.0.0"
  }

Methods

Return block with blockID

• Method: GET /block/:blockID
• Example: curl -X "GET" "http://localhost:8000/block/0"
• Response: {"hash":"86e3a...,"height":0,"body":"First block in the chain - Genesis block","time":"1537804911","previousBlockHash":""}
• Note: Usable without validation!

Start to validate your own address

• Method: POST /requestValidation
• Example: curl -X "POST" "http://localhost:8000/request-validation" \ -H 'Content-Type: application/json; charset=utf-8' \ -d $'{"address": "142BDCeSGbXjWKaAnYXbMpZ6sbrSAo3DpZ" }'
• Response: {"address":"142BD...","timestamp":1537806137134,"message":"142BD...:1537806137134:StarRegistry","validationWindow":1537809737134}

Validate your signature

• Method: POST /message-signature/validate
• Example: curl -X "POST" "http://localhost:8000/message-signature/validate" \ -H 'Content-Type: application/json; charset=utf-8' \ -d $'{"address": "1FRjG..." , "signature": "H/m5L..." }'
• Response: {"registerStar": true, "status": { "address": "1FRjG...", "requestTimestamp": "1537806137134", "message": "1FRjG...:1537806137134:StarRegistry", "validationWindow": "1537806137134", "messageSignature": true
• Note: Start validation before calling this method!

Add a your own Star to the blockchain

• Method: POST /block
• Example: curl -X "POST" "http://localhost:8000/block" \ -H 'Content-Type: application/json; charset=utf-8' \ -d $'{ "address": "ADDRESS", "star": { "dec": "-26° 29'\'' 24.9", "ra": "16h 29m 1.0s", "story": "Star story" } }'
• Response: Returns the added block
• Note: Your address must be validated at this point!

Get all blocks added by address

• Method: GET /stars/address/:address
• Example: curl "http://localhost:8000/stars/address/142BD..."
• Response: Array containing all blocks added by given address
• Note: Usable without validation!

Get Block with hash

• Method GET /stars/hash/:hash
• Example: curl "http://localhost:8000/stars/hash/a59e9..."
• Response: Array containing the corresponding block
• Note: Usable without validation!