The Office of Innovation has held internal sessions to outline and demonstrate how blockchain networks work, using the Bitcoin network.

 
   How blockchain networks work from Qusai Jouda

Subjects covered include (but are not limited to):

Session 1:
Introduction: Money, digital cash, self-sovereign money systems.
Centralized and decentralized networks.
Bitcoin network architecture.
Full-nodes, miner nodes, light-nodes, wallet applications, blockchain explorers.

Session 2:
Digital signing: public/private key cryptography. Ownership based on that instead of trust.
Live transaction: explaining how a transaction goes through, using bitcoin network illustrations.
Hashing, blocks, blockchain, proof-of-work (mining), coinbase transactions (incentive model).

Session 3:
Consensus Mechanisms: proof-of-work.
Forks.
Transactions: inputs, outputs, unspent transaction outputs, bitcoin script (i.e smart contracts).

Session 4:
Ethereum network.
Solidity.
ERC20 tokens.
Live demo using truffle.js and Geth – deploying ERC20 token.

Further Reading:

Technical Resources

 


UNICEF’s work with Blockchain
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