Intro to Web3

Scope

• Ethereum ecosystem
• High-level concepts
• No technical deep dive

Evolution of the Web

(according to Chris Dixon)

Web 1.0

• "read-only"
• Static files
• Decentralized infrastructure
• Browsers on desktop
• Open protocols (HTTP)
• Creating content required technical knowledge
• Desktop
• Examples: IMDbd, Yahoo!, Craigslist

Web 2.0

• Social: share, like, post, follow, comment
• Anyone can create, i.e. "read-write"
• Centralized, mobile-centric
• Built on open-source...
• ...but value captured by platforms
• Lack of privacy and transparency
• Examples: Facebook, Instagram, Twitter

Web 3.0

• Internet of value
• Digital money and goods
• Self-sovreign identity
• Removing intermediaries
  • Banks, tech giants
• Decentralized, peer-to-peer

Web 3.0

• User-centric: bring your identity to a platform
• Privacy: decide what you want to share with whom
• Transparency
  • Example: how many legendary items actually exist?
• Interoperability instead of walled gardens
  • Example: owning a pair of digital sneakers means you can wear them on all platforms

Blockchains

How do blockchains work?

Let's leave that for now...

Wallets, accounts, addresses

Wallet

• Manages accounts
• Keystore with pretty UI
• Prove identity (sign message)
• Allow actions on your behalf (sign transaction)
• "Decentralized BankID"
• Types:
  • Browser extensions
  • Mobile apps

Metamask

Coinbase

Rainbow

Ledger

Paper wallet

Metal wallet

Account

• Holds token balances (like a bank account)
• Identity (like a "personnummer")
• Person -> Account[] (one to many)
• Pseudonymity

Address

• Account identifier
• Derived from public key
• Hiber account:
  • 0xB9da9cC7aD96CF2493D0FBC784470Be94Fad9594
  • 0xB9da...9594

Ethereum Name Service

• DNS: Resolves domain names to IP addresses
  • www.hiberworld.com -> 63.35.131.89
• ENS: Resolves .eth names to Ethereum addresses
  • hiber.eth -> 0xB9da9cC7aD96CF2493D0FBC784470Be94Fad9594
• Can resolve anything, e.g. official Twitter account

Types of tokens

• Fungible (ERC20)
  • All single tokens are identical
  • Currency, membership points...
• NFTs, Non-fungible tokens (ERC721, ERC1155)
  • Each token is unique
  • Art, collectibles...
• Soulbound
  • Non-transferable
  • Certificates, diplomas...

Fungible

Non-Fungible

Web3 at Hiber?

• Web 2.5
  • Adding web3 capabilities to web2 platform
• Main focus: Interoperability
  • Common infrastucturde for identity and ownership

Current capabilities

• Wallet
  • Sign up/in with a wallet
  • Link a wallet to an existing Hiber account
• "Token gating"
  • Lock worlds on hiberworld.com for users who don't own a specific NFT

Enough babble. Show me the goods!