Blockchain Applications & Investment

This Zoom lecture PPT covers five major blockchain applications, six blockchain investment opportunities, and five major crypto investment risks.

This presentation is intended for informational and educational purposes only. It’s not any financial advice, nor any stock and crypto endorsement.


* Decentralization
* Transparency
* Proof of Work (POW), Proof of Stake (POS)
* Peer To Peer



Blockchain Applications

  • Digital Wallets
  • Blockchain Domain Names (Web 3.0 and NFT)
  • DAO (Decentralized Autonomous Organization)
  • Defi (Decentralized Finance)
  • Metaverse



Digital Wallets

  • Web1.0:
    PC, websites. browser war: IE vs Netscape
  • Web2.0:
    cell phones, social media.
    Chrome, Firefox, Safari, Edge
  • Web3.0:
    Digital wallets: Doors to the digital world
    Digital money;
    Digital certificate of ownerships;
  • Blockchain ID:
    Traditional: Gmail login, Facebook login, WeChat Login, etc.
    Blockchain login: Universal login with Wallet Passwordless authentication
  • DEX (Decentralized Exchange)
    Dappradar (support both ETH and MATIC)
    Coinbase (Stock: COIN)
    Binance (Crypto: BNB)
    Square: DEX coming soon (Stock: SQ)
  • App favorite wallets:
    MetaMask wallet (Ethereum blockchain, Crypto: ETH)
    Coinbase wallet (Stock: COIN)
    Binance Trust wallet  (Crypto: BNB)
    Phantom Wallet (Solana blockchain, Crypto: SOL)
  • Other wallets:
    Exodus Wallet (Desktop)
    Hardware  wallet: The Ledger Nano
  • Wallet format: PC software, Cell phone App, USB



Blockchain Domain Names


Cell phone contact list

Internet Domain Names

Estimated 1.7 billion websites exist in 2021
576,000 New Websites Per Day
Web browsers, DNS servers, root servers



Domain Names: History

The cost to register an internet domain name is less than $20.

Generic names such as: business, flower, rose, tiger, new york, … etc cannot be registered as trademarks

Domain Marketplaces

MediaOptions™ is recognized as the #1 domain name brokerage firm in the world. We are pioneers in domain valuation and experts in domain name sales and acquisitions.



Blockchain Domain Names

Blockchain domain names are more useful than the traditional Internet domain names. It has four major applications:

  • Wallet addresses: Cybercon.eth to replace 0xf253fc2ca37c078436d07fb75e5a76a649892172
  • Website addresses:
  • Online ID / Metaverse ID: tom.eth no one can fake anymore
  • NFT: 520.eth one and only



Web3.0 Decentralized Web



Blockchain Domain Names




Decentralized Autonomous Organization

  • DAOs are democratized organizations. All the members of a DAO need to vote for any changes to be implemented.
  • The funding of DAOs is mainly based on crowdfunding that issues tokens.
  • DAOs’ operations are fully transparent and global.

Decentraland Metaverse (Crypto: MANA):


DAO: Sandbox

What Is The Sandbox? (Metaverse Crypto: SAND)

Launched in 2011 by Pixowl, The Sandbox is a blockchain-based virtual world allowing users to create, build, buy and sell digital assets in the form of a game. By combining the powers of decentralized autonomous organizations (DAO) and non-fungible tokens (NFTs), the Sandbox creates a decentralized platform for a thriving gaming community.

How to create a DAO

DAOstack is designed to catalyze the future of collaboration. It’s a platform for decentralized governance that enables collectives to self-organize around shared goals or values, easily and efficiently.



DeFi (Decentralized Finance)

* With DeFi, you can do most of the things that banks support:Earn interest, Borrow, Lend, Buy insurance, Trade derivatives, Trade assets.

* DeFi runs on public blockchains, it’s fast and doesn’t require paperwork or a third party.

* DeFi is global, peer-to-peer, anonymous, and open to all. crypto interest rates:

Celsius crypto interest rates:



Blockchain Investment

  • Startup companies, issue coins
  • NFT tokens
  • Crypto mining
  • DeFi earn high interests
  • Crypto investment: BTC, ETH, SOL, SAND, MANA
  • Stock investment: BLOK, BITO, COIN, SQ, NVDA, MARA



Issue Cryptocurrency

Ethereum Blockchain Smart Contract: Solidity language



NFT (Non-Fungible Token)

Digital collectibles, Digital arts

Digital collectible, Digital art

NFT Sold



NFT Marketplaces



Crypto Mining

Total Bitcoins: 21 million (17M out, 4M left to mine)

Crypto Miners:

  • Cell phones, PCs: not useful miners
  • PC with GPUs: decent miner (Stocks: NVDA, AMD)
  • Bitmain miners: Best Bitcoin miners
    Latest: Antminer S19XP
    Computing power: 140 terahashes/second (TH/s)
    produces 140,000,000,000,000,000 guesses/second


Mining pools:


Crypto Investment: Government



Crypto Investment: Companies

Payment companies: Square,Paypal,Visa, Mastercard

Public Companies: Square, Tesla, Microstrategies



Crypto Investment: Investors

Ray Dalio,
Bill Miller,
Mohamed El-Erian,
Cathy Woods.

Elon Musk,
Tim Cook

All own Crypto coins.



Crypto Investment

  • Crypto Heatmap:

  • Crypto Coins:
    BTC: store of value
    ETH: apps, slow, high gas fees
    SOL: apps, fast, low gas fees
    SAND, MANA: Metaverse
  • Crypto Trading:
    Megapro data platform:
    All Bitcoin addresses, every transaction.
    Money flow –> build trading models.



Blockchain Stocks

  • BLOK: Blockchain ETF
  • COIN, SQ: Apps and services
  • BITO, MARA, RIOT: Assets
  • NVDA, AMD: Hardware tools



Crypto Investment Risks

  • Government crack downs
  • Pumps and Dumps
  • Human hacks: Outside hackers or inside stealing.
    Mt. Gox: It processed 70% of all world Bitcoin trading until it got hacked and filed bankruptcy in 2014.
  • Computing power breakthrough
  • No Government insurance



Pumps and Dumps

In five minutes SQUID coin dropped from $2861 to $0.0007
That was a 99.999976% drop in five minutes.

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