Bitcoin is a decentralized digital currency without a central bank or single administrator. It can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries. Transactions are verified by network nodes through cryptography and recorded in a public distributed ledger called a blockchain. The cryptocurrency was invented in 2008 by an unknown person or group of people using the name Satoshi Nakamoto. Its implementation was released as open-source software in 2009 and began to be used then.

Ethereum Classic is an open-source, decentralized, blockchain-based distributed cryptocurrency platform that runs smart contracts. It was originally known as Ethereum. After The DAO hack in 2016, the Ethereum blockchain split into two separate networks: the newer one inherited the name Ethereum and uses ETH or ether as its cryptocurrency, while the older one, known as Ethereum Classic, uses ETC.

Dogecoin is an open-source, peer-to-peer digital currency.

Ravencoin is a peer-to-peer blockchain that facilitates the efficient creation and transfer of assets from one party to another. The protocol is designed to enable the creation and transfer of tokens that represent real-world assets such as securities, collectibles, gold, event tickets, or even airline miles. Built on a fork of the Bitcoin code, Ravencoin was launched on January 3rd, 2018, and is an open-source project with no ICO or masternodes.

TBC is a public blockchain based on the UTXO & POW model, it ground-breakingly achieved High Performance. It Can Achieve All The Logic Of EVM, But Thanks To The Advantages Of The UTXO Model, This Solution Has The Advantages Of High Performance And Extremely Low Handling Fees.

Monero is an open-source, privacy-oriented cryptocurrency that was launched in 2014. Its blockchain is intentionally configured to be opaque, making transaction details such as the identity of senders and recipients and the amount of each transaction anonymous by disguising the addresses used by participants.

Horizen is a blockchain ecosystem focused on privacy and scalability through side chains. It enables businesses and developers to create their own public or private blockchains and decentralized applications on its distributed network. The project uses a verifiable cross-chain transfer protocol called Zendoo as its sidechain solution, and features a zero-knowledge proof protocol (zk-SNARK) to ensure secure communications with the sidechains.

Zcash is a privacy-preserving cryptocurrency that provides anonymous value transfer using zero-knowledge cryptography. The protocol offers the option to make transactions either shielded, which will be completely anonymous, or transparent, which will be visible on the Zcash blockchain.

Litecoin is a peer-to-peer digital currency for online payments. It is a global payment network that is fully decentralized, without any central authorities. Mathematics secures the network and gives individuals the power to control their own finances. Litecoin has faster transaction confirmation times and improved storage efficiency than the leading math-based currency. With strong industry support, trade volume and liquidity, Litecoin is a proven medium of commerce that complements Bitcoin.

Bitcoin Cash is a cryptocurrency that intends to provide an alternative to Bitcoin. Launched in 2017, Bitcoin Cash was created by a group of Bitcoin users who disagreed with the roadmap proposed by the project's principal developer group, Bitcoin Core, and believed that different technical decisions were necessary to make Bitcoin available to a global audience.

Kaspa is a decentralized and fully scalable Layer-1 based on the GHOSTDAG protocol. Unlike traditional blockchains, GHOSTDAG does not orphan blocks created in parallel; instead, it allows them to coexist and orders them in consensus. The Kaspa blockchain is, in fact, a blockDAG.

Nervos Network aims to expand on Bitcoin’s core technological primitives with Common Knowledge Base (CKB), a scalable Layer-1 blockchain that enables Layer-2 support for Bitcoin. CKB employs a Proof-of-Work consensus mechanism like Bitcoin but generalizes Bitcoin’s limited UTXO model and scripting capabilities by allowing more flexible data storage and verification. To improve Bitcoin’s arbitrary programming limitations, Nervos Network leverages a custom Cell Model for state storage and a virtual machine (CKB-VM) for transaction execution.

EthereumPoW is the original Ethereum blockchain powered by proof of work.

Kadena is a Layer 1 Proof-of-Work blockchain that aims to optimize for scalability. It features a new smart contract language, dubbed Pact, which comes equipped with formal verification and upgradeable smart contracts. Furthermore, Kadena uses a new Proof-of-Work consensus mechanism called Chainweb, consisting of multiple individually mined chains which work in parallel to execute network transactions.

Quai Network is an open-source, Proof-of-Work blockchain network that uses merged mining to increase throughput and security. Users of the Quai Network will benefit from fast transaction times without compromising decentralization and security. Miners will have competitive mining opportunities across all the blockchains within the network.

Verge is a digital currency designed for people and everyday use. It builds on the original Bitcoin blockchain and aims to provide individuals and businesses with a fast, efficient, and decentralized way of making direct transactions.

DigiByte is a decentralized blockchain platform designed to provide a secure, fast, and scalable environment for various use cases. The project was launched on January 10, 2014.

Ambient is an SVM-compatible Proof of Work L1 supplying hyperscaled verified inference on a 600B+ parameter model and its finetunes. It provide Bitcoin-like rewards for any node that infers, finetunes, or trains the network model but with predictable profits.

Nexa is a UTXO-based Layer 1 blockchain platform focusing on scalability and security, utilizing a Proof-of-Work algorithm for large-scale transaction handling.

Salvium is a Layer1 proof-of-work blockchain that combines enhanced privacy, regulatory compliance, and DeFi capabilities. Salvium enables users to transact privately while adhering to regulatory requirements, bridging the gap between privacy and compliance in the cryptocurrency space.

Firo is a privacy-preserving cryptocurrency and ecosystem. Through the Lelantus protocol, users can burn coins to destroy them, thus preventing them from existing, and later redeem them for coins with no previous transaction history. This process of burning and redeeming breaks the links between addresses, making transaction graph analysis much harder.

Starcoin is a proof-of-work blockchain that provides the highest level of security from the outset through its enhanced PoW consensus and secure smart contracts, using the Move language.

The Innovation Game (TIG) is a protocol designed to accelerate algorithmic innovation by coordinating global intelligence. At its core is a new proof-of-work mechanism called Optimizable Proof-of-Work (OPoW).

FACT0RN is a blockchain that enhances the utility of PoW through factoring instead of hashing. The FACT0RN blockchain had no pre-sale, pre-allocation, pre-mining, pre-distribution, or any mechanism to distribute or sell coins in any way prior to launch.

Larissa Blockchain is an EVM-based networks that elevates Larissa to a league of its own is the unique combination of Proof of Work (PoW) with a masternode reward system within an EVM-based blockchain.

Karlsen is a fork of Kaspa introducing a GPU-centric fork as a solution to the dominance of ASIC mining farms, aiming to empower small-scale miners and enhance decentralization.

REAKTOR is a Layer 1 blockchain ecosystem that aims to advance decentralized governance and economic models by integrating elements such as proof-of-work (PoW) mining mechanisms, artificial intelligence (AI) technologies, and P2E.

Lyncoin is an open source P2P money and a payment network based on blockchain with auxiliary Proof-of-Work chain type and using sha256 hash algorithm.

LiquidLayer is a highly scalable PoW blockchain with integrated Liquid-Staking-Derivative Bridge. In other words, LiquidLayer advances PoW blockchains with EVM compatibility and trilemma solutions. Its unique LSD bridge transfers funds from Ethereum, leveraging DeFi instead of merely locking assets, enabling users to earn APY on bridged assets.

EthereumFair is a fork of the Ethereum blockchain that still utilizes Proof-of-Work consensus.