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Blockchain and cryptocurrency

Blockchain and cryptocurrency

Topics related to blockchain and cryptocurrency.

OverviewStructured DataIssuesContributors

Contents

Base layer protocolsBlockchain theory and fundamentalsBlockchain propertiesComponentsConsensusBlockchain attack vectorsCryptocurrenciesSmart contract platformsPrivacy cryptocurrenciesDistributed ledgers (non blockchain) Permissioned ledgers and blockchainsInfrastructureInteroperabilityDecentralized file storage DatabaseScalability Privacy and securityCryptocurrency token and NFTSmart contract developer toolsSmart contract programming languagesBlockchain oracles and prediction marketsGovernanceDecentralized organizationsOpen InternetVPNValue ExchangeAdvertisingDataDecentralized marketplacesDecentralized mesh networkingSocialContent MonetizationComputationEnergyProperty & housing rentalRidesGenomeFinancialCentralized exchangesDecentralized Exchanges (DEX) or non-custodial relayersPaymentsTrading / market makersAsset management platformsCryptocurrency walletsEscrowTax platformsCrypto hedge funds and venture firmsCredit & lendingInsuranceSecurity TokensDebit CardsCrowdfundingStablecoinsLiquidity & accessibilityCrypto-collectiblesOtherCentral Bank Digital Currency (CBDC)Data authenticity and supply chainConsultingGaming & entertainmentInternet of ThingsTimelineTable: Companies in this industryTable: Further ResourcesReferences
Is a
Industry
Industry
Technology
Technology

Industry attributes

NAICS Code
541,5119
Child Industry
Cryptocurrency mining
Cryptocurrency mining
13
Proof-of-capacity
Proof-of-capacity
14
Delegated proof of stake
Delegated proof of stake
Decentralized Finance
Decentralized Finance
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Blockchain
Blockchain
Proof-of-work
Proof-of-work
15
Smart contract
Smart contract
...

Technology attributes

Related Technology
Consensus (computer science)
Consensus (computer science)
Financial technology
Financial technology
10
Cryptography
Cryptography
Non-fungible token (NFT)
Non-fungible token (NFT)
11
Loading...
12

Other attributes

Consensus Mechanism
Proof-of-stake
Proof-of-stake
Proof-of-work
Proof-of-work
1
Industry
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Key People
Gavin Wood
Gavin Wood
2
Satoshi Nakamoto
Satoshi Nakamoto
3
Vitalik Buterin
Vitalik Buterin
4
David Chaum
David Chaum
5
Craig Wright
Craig Wright
6
Sam Bankman-Fried
Sam Bankman-Fried
7
Changpeng Zhao
Changpeng Zhao
8

Cryptocurrency is defined as a group of binary data that acts as a medium of exchange, or currency. Cryptocurrencies are usually fiat currencies, as they are not backed by, or convertible into, a commodity like gold. Cryptocurrency transactions are verified and recorded by a decentralized system that uses cryptography, rather than by a centralized authority like a bank.

Most cryptocurrencies are built to run on blockchains. Blockchains are records of cryptocurrency transactions made up of individual "blocks" that are formed with each transaction and linked together with cryptography. Blocks are all tied to and built off of the previous blocks behind it, which reinforces the chain it creates. Each block is made up of a cryptographic hash of the last block, a date and timestamp, and other data related to the transaction the block is referencing. Blocks and blockchains are very difficult, but not impossible, to modify due to each block's ties to the next: any data alteration affects every other subsequent block in the chain.

Base layer protocols

Base layer protocols are the peer-to-peer networks which form the basis of the Decentralized application (dApp) web. These base protocols are typically blockchains with an associated cryptocurrency coin secured by a consensus protocol where participants in the network decide collectively on the addition of new blocks to the blockchain ledger.

Blockchain theory and fundamentals

Fundamental concepts related to blockchains.

  • Blockchain
  • Cryptography
  • Smart contracts
  • Digital ledger
  • Game theory
  • Medium of exchange
  • Cryptocurrency
  • Cryptographic hash function
Blockchain properties

Properties of blockchains and cryptocurrency systems.

  • Blockchain decentralization
  • Blockchain security
  • Blockchain scalability
  • Blockchain interoperability
  • Node peer discovery
  • Transaction propagation
  • Transaction validation
Components

Components of blockchains.

  • Timestamp
  • Cryptographic nonce
  • Merkle tree
  • Digital signatures
  • Cryptographic hash function
  • Public key cryptography
  • Multi-signature
Consensus

Consensus algorithms, sybil control mechanisms, and other topics related to consensus mechanisms for establishing a consistent canonical agreement between network participants on the blockchain state.

Sybil control mechanisms

  • Proof-of-Work (PoW)
  • Proof-of-Stake (PoS)
  • Proof-of-Capacity (PoC)
  • Proof-of-Burn (PoB)
  • Proof of Proof-of-Work (PoPoW)
  • Proof-of-Authority (PoA)
  • Proof-of-Activity (PoA)
  • Proof-of-Storage (PoS)
  • Proof-of-Replication (PoRep)
  • Proof-of-Time (PoT)
  • Delegated Proof-of-Stake (DPoS)
  • Proof-of-Stake-Velocity (PoSV)
  • Leased Proof-of-Stake (LPoS)
  • Proof-of-Resource (PoR)
  • Proof-of-Importance (PoI)
  • Proof-of-Provenance (PoP)
  • Proof-of-Devotion (PoD)
  • Proof-of-Believability (PoB)
  • Proof-of-Audit (PoA)
  • Sentinel Proof of Retrievability (SPoR)
  • 2D Byzantine Delegated Proof-of-Stake (2D-BPoS)
  • Proof of Elapsed Time (PoET)
  • Proof-of-Stake Voting (PoSV)
  • Proof of Replica (PoR)
  • Proof of Storage and Time (PoST)
  • Proof-of-Service (PoS)
  • Proof-of-Signature (PoSign)
  • Proof of Involvement and Integrity (PII)
  • Proof of Stake & Trust (PoST)
  • Randomized Delegated Proof of Stake (Roll-DPoS)
  • Proof of Trust (PoT)
  • Proof of View (PoV)
  • Proof-of-Consumption (PoCon)
  • Proof-of-Transaction (PoT)
  • Proof of Creativity (PoC)
  • Proof of Contribution (PoC)
  • Proof of Attention (PoA)
  • Proof of Lock (PoL)

Consensus mechanisms

  • Practical Byzantine Fault Tolerance Algorithm (PBFT)
  • Nakamoto consensus
  • Avalanche
  • Cosmos/Tendermint
  • Paxos
  • VBFT
  • Loop Fault Tolerance
  • Mediated Consensus
  • Obelisk
  • Random Beacon
  • MimbleWimble protocol
  • Dandelion protocol
  • See-Saw rewards mechanism
Blockchain attack vectors

Methods by which malicious actors can attempt to subvert or disrupt the intended functionality of blockchain protocols.

  • 51 percent attack (majority attack)
  • Double-spend
  • Sybil attack
  • Block withholding attack
  • Selfish Mining attack (Block discarding)
  • Long range attack
  • Cryptographic dust
Cryptocurrencies

Cryptocurrencies with the primary intention of a decentralized currency replacement to traditional fiat currencies by being a store of value, a unit of account, or a medium of exchange.

Smart contract platforms

Platforms for decentralized applications allowing for the execution of code on the blockchain in the form of smart contracts. These platforms allow for more generalized logic to be coded on the blockchain enabling a broad range of Web 3.0 decentralized applications.

Privacy cryptocurrencies

A specialized form of cryptocurrencies focused on maintaining the privacy and anonymity of individuals transaction with them.

Distributed ledgers (non blockchain)

A class of distributed ledgers whose structure does not rely blocks of transactions but rather other architectures like a directed acyclic graph. These alternate ledgers have different security, scalability, and consensus properties from blockchain technologies.

Permissioned ledgers and blockchains

Blockchains or distributed ledgers that require special access or permission to participate rather than being open to the public.

Infrastructure

Infrastructure comprises the development stack for building decentralized applications. These are protocols and tools that may connect and support applications and other protocols in a variety of ways.

Interoperability

Interoperability protocols allow for communication of state, data, or value transfer between different blockchains.

Decentralized file storage

Store and retrieve files and data without relying on a trusted central authority.

Database

Decentralized database projects.

Scalability

Projects focusing on both on-chain and off-chain solutions for increasing blockchain transaction throughput.

Privacy and security

Privacy and security projects for decentralized applications.

Cryptocurrency token and NFT

A token is a type of digital crypto-assets, giving owners conferring the right to own something assets: product, service, or security.

The main attribute of the token against the non-fungible token (NFT) is standardization. You can create a token for fiat currency, gold, oil, and other things that have a definite standard. But for non-standard things like pieces of art, second-hand goods, etc, using NFT.

Smart contract developer tools

Tools which help developers create and secure smart contract code.

Smart contract programming languages

Programming languages that are specific to smart contracts, i.e. contract-oriented programming languages.

Blockchain oracles and prediction markets

Blockchain oracles are a blockchain technology that allows blockchains or smart contracts to interact with external data sources. Prediction market blockchains focus on bringing traditional prediction markets to the blockchain.

Governance

Projects restructuring the way that institutions, political systems, and people govern and organize themselves using blockchain or decentralized technologies.

Decentralized organizations

Projects with decentralized governance or providing support for managing organizations through decentralized governance.

Open Internet

Projects working towards a more open and user controlled Internet.

VPN

Decentralized VPN services.

Value Exchange

Projects creating marketplaces or frameworks for peer to peer value exchange without a centralized intermediary. Projects in these categories often have what are considered utility tokens, which represent future access to a service.

Advertising

Advertising platforms connecting users, advertisers, and publishers directly without ad network intermediaries.

Data

Protocols enabling the sharing and monetization of data resources.

Decentralized marketplaces

Projects building decentralized marketplaces.

Decentralized mesh networking

Projects working on decentralized mesh networks.

Social

Decentralized social networks, communication tools, and social related applications built using blockchain technology. These projects employ a variety of differentiators from traditional social networks involving data privacy, monetary incentives, and more.

Content Monetization

Projects working on decentralized content monetization platforms enabling content creators and content consumers to transaction directly without third party mediation.

Computation

Decentralized projects in which users provide computation in exchange for tokens.

Energy

Projects focusing on the redistribution, transmission, and retail of energy via decentralized systems.

Property & housing rental

Decentralized property and housing rental.

Rides

Decentralized ride sharing.

Genome

Projects related to decentralized storage of genomic data and marketplaces for the exchange of genetic information.

Financial

The field of decentralized finance and cryptocurrency investments.

Centralized exchanges

Centralized exchanges for cryptocurrencies trading.

Decentralized Exchanges (DEX) or non-custodial relayers

A decentralized cryptocurrency exchange is an exchange market that utilizes blockchain or another decentralized technology to enable peer to peer transfer of digital assets without reliance on a trusted third party to hold funds usually supported by liquidity providers.

Payments

Services that help individuals make payments.

Trading / market makers

Tools and projects assisting the trading and exchange between cryptocurrencies.

Asset management platforms

Platforms for managing cryptocurrency investments.

Cryptocurrency wallets

Wallets are the user interface for directly interacting with the blockchain to transfer and move cryptocurrencies. Both hardware and software are included.

Escrow
Tax platforms
Crypto hedge funds and venture firms

Cryptocurrency hedge funds and venture firms are investment funds which pool capital from investors into a group of assets focusing entirely or partially on cryptocurrencies or other decentralized digital assets. Hedge funds and venture funds typically have different incentive structures, with hedge funds being focused on shorter timeframes and venture firms on longer timeframes.

Credit & lending

Projects working on credit, risk, and lending.

Insurance

Decentralized peer to peer insurance.

Security Tokens

Platforms for issuing and exchanging tokenized securities.

Debit Cards

Debit cards for spending cryptocurrencies.

Crowdfunding

Platforms to manage and launch blockchain crowdfunding projects.

Stablecoins

Stablecoins are projects attempting to create decentralized cryptocurrencies with specific properties like low volatility and non reliance on centralized backing.

Liquidity & accessibility

Crypto-collectibles

Crypto-collectibles are digital collectibles, commonly using the ERC-721 non-fungible Ethereum token standard, recorded on a blockchain ledger.

Other

Other types of cryptocurrency and blockchain related projects.

Central Bank Digital Currency (CBDC)

This is an electronic obligation by the monetary regulator that is used as an instrument of payment. It seems like cryptocurrency but has a few different attributes:

  • Centralized issuer. The CBDC can’t be earned by mining or staking like usual cryptocurrencies. Only the national regulator (usually it is the central bank of government) can issue new digital coins.
  • Legal status. The CBDC is legal in the country that issued it. In the future it will be legal in other countries.

Read more about CBDC here.

Data authenticity and supply chain

Securing data records on immutable ledger systems.

Consulting

Companies consulting on blockchain and smart contract technologies.

Gaming & entertainment

Cryptocurrencies as video game virtual assets, or other projects related to entertainment and gaming.

Internet of Things

Decentralized projects aiming to link the Internet of things to decentralized blockchain technology.

Timeline

No Timeline data yet.

Companies in this industry

Further Resources

Title
Author
Link
Type
Date

Blockchains & Distributed Ledger Technologies

Shermin Voshmgir

https://blockchainhub.net/blockchains-and-distributed-ledger-technologies-in-general/#:~:text=Permissioned%20ledgers%20are%20mostly%20used,the%20block%20to%20be%20valid.

Web

Introduction to Permissioned Blockchains

Nitish Singh

https://101blockchains.com/permissioned-blockchain/

Web

June 2, 2019

Permissioned blockchain | Examples | Public, Private, Permissioned Blockchains Compared

https://4irelabs.com/how_to_use_permissioned_blockchain

Web

References

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