As of now, there are thousands of blockchain-based cryptocurrencies, each serving different purposes and operating on various blockchain networks. The number fluctuates as new coins are created and others become obsolete. Below is an overview of some major blockchain networks and their associated coins:

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1. Major Blockchain Coins

These coins are native to their respective blockchain networks:

Bitcoin (BTC): The first cryptocurrency, primarily used as a store of value and digital currency.

Ethereum (ETH): Powers the Ethereum blockchain and is used for transactions, smart contracts, and decentralized applications (dApps).

Binance Coin (BNB): Native to the Binance Smart Chain and Binance ecosystem.

Cardano (ADA): Used on the Cardano blockchain for smart contracts and decentralized applications.

Solana (SOL): Powers the Solana blockchain, known for high-speed transactions.

Polkadot (DOT): Enables cross-chain compatibility and powers the Polkadot ecosystem.

Avalanche (AVAX): Used in the Avalanche ecosystem for decentralized finance (DeFi) and smart contracts.

XRP (XRP): Facilitates cross-border payments on the XRP Ledger.

Dogecoin (DOGE): Originally a meme coin, now used for small payments and tips.

Litecoin (LTC): A faster and lighter version of Bitcoin.

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2. Stablecoins

These are tied to fiat currencies or assets to maintain stability:

Tether (USDT): Pegged to the US dollar.

USD Coin (USDC): Backed by US dollar reserves.

Binance USD (BUSD): Issued by Binance and pegged to the US dollar.

Dai (DAI): Decentralized stablecoin on the Ethereum blockchain.

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3. Popular DeFi and Utility Tokens

Uniswap (UNI): Governance token for the Uniswap decentralized exchange.

Chainlink (LINK): Powers decentralized oracles for smart contracts.

Aave (AAVE): Used in the Aave lending protocol.

SushiSwap (SUSHI): Associated with the SushiSwap decentralized exchange.

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4. Privacy Coins

Designed to ensure transaction privacy:

Monero (XMR): Focuses on private, secure, and untraceable transactions.

Zcash (ZEC): Offers optional privacy features.

Dash (DASH): Prioritizes privacy and speed in transactions.

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5. Other Notable Coins

Tezos (XTZ): Used for governance and staking on the Tezos blockchain.

Tron (TRX): Supports dApps and smart contracts on the Tron network.

Filecoin (FIL): Decentralized storage solution.

Cosmos (ATOM): Enables interoperability between different blockchains.

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6. Meme and Community Coins

Shiba Inu (SHIB): Community-driven token inspired by Dogecoin.

Pepe (PEPE): A meme coin with speculative interest.

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Current Cryptocurrency Count

According to sites like CoinMarketCap and CoinGecko, over 10,000 cryptocurrencies exist, but many have minimal usage or value. Most of the market's activity and liquidity are concentrated in the top 100 cryptocurrencies.

Would you like a detailed list of coins by category, use case, or blockchain?