Bitcoin, Blockchain, CryptocurrencyManajemen & Policy

Onno W. Purboonno@indo.net.id

XECUREIT.idIBI Darmajaya

1N5p51QmaYBckKQzp8S5N7uVHVAtAfYqPi

Outline

● Blockchain & Bitcoin Secara Umum● HyperLedger● Smart Contract● Keyword “Pemikiran”

BlockChain

What is blockchain technology?

● Most people associate the term blockchain with Bitcoin (the Internet-based currency). However, Bitcoin is now only one of many public blockchain platforms using blockchain technology in banking—all of which keep permanent time-stamped records of various transactions for the public to see and verify. For example, people now use blockchain to timestamp digital documents and images. This provides confirmation that a person had a file at a specific date and time.

● Public blockchains are useful for things like patent and copyright visibility. Governments that opt for data transparency can publish information on blockchain platforms to provide the public access to files with time-stamp and originator information.

● A private blockchain is different in that it gives their contributors control over who can read transaction ledgers, including who can submit and verify them. This is often a necessity for financial transactions that need to be kept private among validated users. By comparison, a public blockchain platforms allow anyone from any region of the world to read and write transactions. In some cases, this has resulted in collusion to ‘fix’ certain transactions. More concerning–some participants operate on the dark net to exchange illicit goods for Bitcoin or other digital currencies, like Monero.

● There are mainly four main aspects involved in a blockchain based transaction:– Decentralization: Blockchain shares the control over to various entities involved in a

transaction, thereby distributing data which can be accessed in real time.

– Digital Signature: Using public keys and private keys, blockchain uses unique digital signatures to authenticate and exchange transaction values between the entities, which makes the process faster.

– Mining: A distributed consensus system rewards miners for confirmation of transactions and using strict cryptographic rules, the mined information is stored in blocks for faster access.

– Data Integrity: Blockchain ensures that the data is tampered with, or changed as some complex algorithms are used to store the data, after it has been authenticated.

● Besides banking operations, blockchain is now increasingly used in Internet of Things applications, healthcare, trading platforms and more areas where real-time transactions and exchange of data is happening.

Defining characteristics of blockchain platforms

● Distributed access to transaction information - A complete history of blockchain transaction information is available to all network users. There is no central control node. Records are verified without the use of any intermediary. Each ‘node’ stores information that is made accessible to other nodes.

● Transparency with the option of anonymity - Every user on a blockchain has a unique, identifying address (a 30 + alphanumeric code) to validate identity. Transactions occur between addresses. Users can either choose to remain anonymous or provide information about their identity to others.

● Records of transactions are permanent - Transaction information, which is linked to every previous and subsequent transaction, cannot be changed. This is because algorithms and other digital techniques ensure that all records are permanent, time-stamped, and available to others on the network.

● Computational Logic - Because ledgers are digitally based, they are programmed/programmable. They are therefore open to users who want to create algorithms that establish new rules for transactions with other nodes.

● Bottom line – blockchain technology is more valuable than bitcoin or any other digital currency it may use. Though blockchain platforms are for the most part secure, they nonetheless have distinctive security vulnerabilities which require proactive measures before the launch of any new ledger.

Tingkat Kesulitan Relatif Mining

Blockchain vs Traditional

Smart Contract

● Smart Contracts: The Blockchain Technology That Will Replace Lawyers

HyperLedger

● Ref: IBM

Pertanyaan2 ..

● Kecepatan / Rate Performance● Audit