$Alibaba(BABA.US)$
Sold 178 shares at $76. still owning 4000 shares.

$Genting Sing(G13.SG)$
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Should try this instead. Everyday go up
$Geo Energy Res(RE4.SG)$

History of blockchain Technology in three steps:
- It was initially developed in 1991 as a sort of digital timestamp. Early innovators saw this function almost as a “notary” function. There could be no backdating or tampering with data utilizing the early blockchain technology.
- For almost two decades nobody really cared.
- 2009 “Satoshi Nakamoto” introduces BTC.
What is blockchain Technology?
Blockchain is a form of “Distributed Ledger.” I’ll break it down with an image so its easier to understand. Each “block” has three basic parts to it. The “data”, the “hash” and the “hash” of the previous “block”.
Data: This differs depending on the function. In something like BTC we have the sender, the receive and how many coins moved.
Hash: Think of the Hash as a unique ID or fingerprint. Changing anything about the block changes the hash.
Hash of Previous Block: That is exactly what it sounds like. A ledger containing the unique ID/fingerprint of the block before it in the chain.
You’ll notice the first block has no previous hash number. That is because it is the first block in the chain. It is known as the “Genesis Block”, the beginning.
Why is Blockchain Technology so difficult to tamper with?
A modern computer could calculate hundreds of thousands of hash/second. In theory it would be easy to tamper with a single block and then change the hash number of the preceding blocks so they would match.
A concept called “proof of work” slows down this process to prevent computing and changing previous hashes. Currently it takes about 10 minutes to generate the hashcash proofs of work to mine BTC. This means that if someone were to TRY and tamper with a block they would need to change EVERY block before that as well to hide the discrepancy and receive P2P validation.
At 10mins/block it simply isn’t possible.
Blockchain technology is built utilizing a peer-to-peer verification process. This means each when a new block is discovered it is sent to everyone on the network and each node will independently verify the correctness of the block. In the simplest terms every node executes a consensus protocol to verify the addition of the block. ALL OF THEM. This also removes the need for centralization. (ie decentralization)
Any block that has been tampered with will be rejected by the nodes.
In order to effectively tamper with the blockchain and be validated on the P2P network someone would have to:
1) Tamper with ALL the blocks on the chain. (Remember the hash of the previous block)
2) Redo all the POW.
3) Somehow take control of greater that 50% of the P2P network.
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$Alibaba(BABA.US)$ Baba have no limit to the sky! but before that have no limit for the bottom