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License: MIT License
This is a simple implementation of a blockchain based currency in python
License: MIT License
This project attempts to create a simple Blockchain demo using python --- Running a Miner --- miner-server.py requires flask. To run miner-server.py in a local environment: sudo su . venv/bin/activate python3 miner-server.py & Tu run miner-server.py in a docker container: docker build -t local-repository:miner-server . docker run -dp 80:80 local-repository:miner-server --- Initializing a Miner --- import blockchain b = blockchain.Block() # This will be the first block in the blockchain m = blockchain.Miner('alberto') # Choose a name for the miner m.sign_block(b) # Find the nonce for the block and sign it bc = blockchain.Blockchain(b,1) # Create a blockchain from the block m.set_blockchain(bc) # Give the blockchain to the miner, good to go! --- Miner API --- GET http://[hostname]/miner/api/v0.1/blockchain Retrieves the miner's blockchain GET http://[hostname]/miner/api/v0.1/blockchain/first-block Retrieves the first block in the miner's blockchain GET http://[hostname]/miner/api/v0.1/blockchain/last-block Retrieves the last block in the miner's blockchain GET http://[hostname]/miner/api/v0.1/blockchain/block/[signature] Retrieves a block with a specific signature from the miner's blockchain GET http://[hostname]/miner/api/v0.1/blockchain/tail/[signature] Retrieves the miner's blockchain from the block with a certain signature POST http://[hostname]/miner/api/v0.1/blockchain/block Uploads a new signed block to add to the miner's blockchain POST http://[hostname]/miner/api/v0.1/transaction (ToDo) Uploads a candidate transaction --- Testing POST block --- In python3: import blockchain import requests import json request = requests.get('http://localhost/miner/api/v0.1/blockchain/last-block') miner = blockchain.Miner('Miner') block = blockchain.Block() block.from_json(request.json()) blockchain_ = blockchain.Blockchain(block, zeros=1) miner.set_blockchain(blockchain_) block = blockchain.Block(previous=miner.blockchain.last) miner.sign_block(block) miner.blockchain.append(block) block.to_json() # Haven't got yet requests.post() to work Execute: curl -i -H "Content-Type: application/json" -X POST -d [Output from last command] http://localhost:80/miner/api/v0.1/blockchain/block Return must be: HTTP/1.0 201 CREATED Content-Type: text/html; charset=utf-8 Content-Length: 131 Server: Werkzeug/0.14.1 Python/3.5.5 Date: Wed, 30 May 2018 13:27:33 GMT [Output from block.to_json()] Test also the blockchain: curl -i -H "Content-Type: application/json" -X GET http://localhost:80/miner/api/v0.1/blockchain HTTP/1.0 200 OK Content-Type: text/html; charset=utf-8 Content-Length: 546 Server: Werkzeug/0.14.1 Python/3.5.5 Date: Wed, 30 May 2018 13:31:11 GMT {"last": "0e6fc956c6203586d05afd7cd9a8c9513c4450116d0742b54eff4074b319b38f", "first": "09e17d31ffc28f4717907bf5d3ff8d7ac02e8cf08e6ee09557b8e872ff489364", "zeros": "1", "blocks": ["{\"miner\": \"Alberto\", \"previous\": \"\", \"nonce\": \"2\", \"signature\": \"09e17d31ffc28f4717907bf5d3ff8d7ac02e8cf08e6ee09557b8e872ff489364\"}", "{\"miner\": \"Alberto\", \"previous\": \"09e17d31ffc28f4717907bf5d3ff8d7ac02e8cf08e6ee09557b8e872ff489364\", \"nonce\": \"14\", \"signature\": \"0e6fc956c6203586d05afd7cd9a8c9513c4450116d0742b54eff4074b319b38f\"}"]}
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