Toy blockchain

This is an OCaml port of the python toy blockchain described in https://hackernoon.com/learn-blockchains-by-building-one-117428612f46

I ported this to build a bit of intuition about basic blockchain concepts and to practice the excellent OCaml language, which I haven't yet had an opportunity to use in the industry.

Build / run a node

dune build
dune exec ./node.exe -- -p {PORT}

Get a node's chain

curl http://localhost:3000/chain

Check chain validity

curl http://localhost:3000/chain/valid

Create a transaction

curl --header "Content-Type: application/json" \
    --request POST \
    --data '{ "sender": "some-sender-address", "recipient": "some-recipient-address", "amount": 1 }' \
    http://localhost:3000/transaction

mine on a node

curl --request POST http://localhost:3000/mine

register nodes with another node

curl --header "Content-Type: application/json" \
    --request POST \
    --data '{ "nodes": ["127.0.0.1:3001"] }' \
    http://localhost:3000/nodes/register

resolve node (run consensus across the network of registered nodes)

curl --request POST http://localhost:3000/nodes/resolve