Private Blockchain

Private Blockchain, in this project I created the classes to manage my private blockchain, to be able to persist my blochchain I used LevelDB. Interaction with this private block chain can be done via API. this blockchain implements mempool mechanics.

Setup project for Review.

To setup the project for review do the following:

1. Download the project.
2. Run command npm install to install the project dependencies.
3. start the the API: node app.js

API

1. get block by height GET http://localhost:8000/block/[blockheight]

{
    "hash": "f365cda92493c151a91cc429c91273f05cb197d0bcafb5807c1c50a00990cb70",
    "height": 3,
    "body": {
        "address": "1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW",
        "star": {
            "dec": "68° 52' 56.9",
            "ra": "16h 29m 1.0s",
            "story": "466f756e642073746172207573696e672068747470733a2f2f7777772e676f6f676c652e636f6d2f736b792f",
            "storyDecoded": "Found star using https://www.google.com/sky/"
        }
    },
    "previousBlockHash": "dcfa342335e9efa7424142e352d8b82b4b90354b99b16912f619ef9ab66e98be",
    "time": "1560088428"
}

2. get all blocks for a wallet GET http://localhost:8000/stars/address:[ADDRESS]

[
    {
        "hash": "8152225832b3ff0fb78451e0117dd7e0e30c0a73c66ce5f68815fe7e8a2dc8fd",
        "height": 1,
        "body": {
            "address": "1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW",
            "star": {
                "dec": "68° 52' 56.9",
                "ra": "16h 29m 1.0s",
                "story": "466f756e642073746172207573696e672068747470733a2f2f7777772e676f6f676c652e636f6d2f736b792f",
                "storyDecoded": "Found star using https://www.google.com/sky/"
            }
        },
        "previousBlockHash": "057dc0f327fed6f588882d89587385fb9c2eb28176ab07c979509395530a63ea",
        "time": "1560087795"
    },
    {
        "hash": "dcfa342335e9efa7424142e352d8b82b4b90354b99b16912f619ef9ab66e98be",
        "height": 2,
        "body": {
            "address": "1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW",
            "star": {
                "dec": "68° 52' 56.9",
                "ra": "16h 29m 1.0s",
                "story": "466f756e642073746172207573696e672068747470733a2f2f7777772e676f6f676c652e636f6d2f736b792f",
                "storyDecoded": "Found star using https://www.google.com/sky/"
            }
        },
        "previousBlockHash": "8152225832b3ff0fb78451e0117dd7e0e30c0a73c66ce5f68815fe7e8a2dc8fd",
        "time": "1560088161"
    },
    {
        "hash": "f365cda92493c151a91cc429c91273f05cb197d0bcafb5807c1c50a00990cb70",
        "height": 3,
        "body": {
            "address": "1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW",
            "star": {
                "dec": "68° 52' 56.9",
                "ra": "16h 29m 1.0s",
                "story": "466f756e642073746172207573696e672068747470733a2f2f7777772e676f6f676c652e636f6d2f736b792f",
                "storyDecoded": "Found star using https://www.google.com/sky/"
            }
        },
        "previousBlockHash": "dcfa342335e9efa7424142e352d8b82b4b90354b99b16912f619ef9ab66e98be",
        "time": "1560088428"
    }
]

3. get star by block height GET http://localhost:8000/stars/[blockheight]

{
    "dec": "68° 52' 56.9",
    "ra": "16h 29m 1.0s",
    "story": "466f756e642073746172207573696e672068747470733a2f2f7777772e676f6f676c652e636f6d2f736b792f",
    "storyDecoded": "Found star using https://www.google.com/sky/"
}

4. get star by its block hash http://localhost:8000/stars/hash:[blockhash]

{
    "dec": "68° 52' 56.9",
    "ra": "16h 29m 1.0s",
    "story": "466f756e642073746172207573696e672068747470733a2f2f7777772e676f6f676c652e636f6d2f736b792f",
    "storyDecoded": "Found star using https://www.google.com/sky/"
}

4. create a new block POST http://localhost:8000/block ex payload:

{
	"address": "1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW",
    "star": {
            "dec": "68° 52' 56.9",
            "ra": "16h 29m 1.0s",
            "story": "Found star using https://www.google.com/sky/"
        }
}

5. post a request to the mempool for a given address: POST localhost:8000/requestValidation

{
    "address":"1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW"
}

6. validate a the request with a signature: localhost:8000/message-signature/validate

{
    "address":"1Kf3d9d8JZCFsKZPa8VQMk4ewAh5PHhheW",
 	"signature":"H7STOqLkAeAq2gT3hpKo+8LhYLQ3lkK4ZV57lV+JR0ytWaccpSXN1cMLmi93PmNbgF2/OKnNgssqETm8jzDrfY4="
}