Blockchain references

[PPT] How Blockchain Works (Korean)

Ethereum Homestead Documentation

Cases for Tendermint

A complete beginners guide to blockchain technology

[wiki] Merkle Tree : protect TXs in the block.

[wiki] Public Key Cryptography : protect TX value between the sender and recipient.

JXTA : Open Source Protocol for P2P

<Questions>

• How can it ensure the uniqueness of the block Id? If the block metadata of one node is same with another nodes, would the block Id of blocks that made respectively at each node be equal?
• If an user lost his/her private key, how can he/she find the history or recover his/her value?