guanchaoguo / blockchain-tutorial

Write and publish your own blockchain in less than 200 lines of Go

Code your own blockchain in less than 200 lines of Go!

Tutorial

Read our blog post first to see a walkthrough of the code.

Ask us anything!

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Check out our follow-up tutorials:

• Networking
• Proof of Work
• Proof of Stake
• IPFS
• P2P
• Advanced Concepts for Beginners
• Start your own Hyperledger blockchain the Easy Way!

Deployment steps:

• git clone https://github.com/mycoralhealth/blockchain-tutorial.git
• navigate to this directory and rename the example file mv example.env .env
• go run main.go
• open a web browser and visit http://localhost:8080/
• to write new blocks, send a POST request (I like to use Postman) to http://localhost:8080/ with a JSON payload with BPM as the key and an integer as the value. For example:

{"BPM":50}

• Send as many requests as you like and refresh your browser to see your blocks grow! Use your actual heart rate (Beats Per Minute) to track it over time.

Screenshot