What is Bitcoin and Why it Matters for Web3

DappRadar

Bitcoin is the most important cryptocurrency in the world, but it doesn’t really power decentralized applications, NFT collections, DAOs or gaming projects. The Bitcoin network itself is mainly used to transfer or store bitcoin. Over the past few years we’ve seen some programming hacks enabling onchain NFTs with Runes and Ordinals, but most of the networks value lays in the security.

Bitcoin is a digital currency. It operates without a central bank. People use it for peer-to-peer transactions. Satoshi Nakamoto created it in 2009. Bitcoin uses blockchain technology, a public ledger for all transactions. It ensures security and transparency. Users store Bitcoin in digital wallets. They can send or receive it globally. Bitcoin’s supply is limited to 21 million coins. This scarcity drives its value.

However, DappRadar tracks applications on the blockchain. Technically this is not possible on Bitcoin, but still developers have found ways to build on the most prominent chain. Bitcoin Ordinals have become a leading protocol in the NFT market, while various chains tap into the security of Bitcoin.

Price of Bitcoin

On July 14th, 2025, Bitcoin reached an all-time high of $122,838. This brings the market capitalization to more than $2,427,000,000,000. The market trades over $50 billion worth of BTC per day.

What is Proof-of-Work?

Proof-of-work is a consensus mechanism for securing blockchains. Miners, powerful specialized computers, solve complex math problems. This validates transactions on the network. Solving problems requires computational power. The first miner to solve it adds a block. They earn a Bitcoin reward. This process ensures trust without intermediaries. It prevents double-spending, a key issue in digital currencies. Proof-of-work demands significant energy.

Bitcoin mining validates transactions, while miners use powerful computers. They solve cryptographic puzzles to create blocks, while each block records recent transactions. The first miner to solve the puzzle broadcasts it, which means they earn rewards paid in BTC. Other miners verify the solution. If correct, the block joins the blockchain. The complexity of mining adjusts every two weeks, which they do to make sure that the block creation time remains steady.

Does bitcoin kill the planet?

Bitcoin mining uses a lot of energy. Critics say it harms the environment. Data centers run 24/7, consuming electricity. Some estimate Bitcoin’s energy use matches small countries. However, miners increasingly use renewable energy. Solar and wind power are common in mining hubs. Efficient hardware also reduces consumption. Critics exaggerate environmental impact, but concerns remain. Improvements in technology could lower energy use.

Bitcoin Ordinals explained

Bitcoin Ordinals are a new feature tapping into the security of the Bitcoin network. Ordinals allow data inscription on individual satoshis. A satoshi is Bitcoin’s smallest unit. Users can attach images, text, or videos. This creates unique digital assets, like NFTs. Ordinals use the Bitcoin blockchain for security. They emerged after the 2023 Taproot upgrade. Ordinals expand Bitcoin’s use beyond currency. Collectors and artists value them. Adoption is growing steadily.

What is Wrapped BTC?

Wrapped Bitcoin (WBTC) is a token. It represents Bitcoin on other blockchains. Each WBTC equals one Bitcoin, backed 1:1. Custodians hold the actual Bitcoin. WBTC runs on Ethereum, enabling Bitcoin in Ethereum’s ecosystem. It follows ERC-20 standards. This makes it compatible with Ethereum apps. Users trade WBTC without selling Bitcoin. It bridges Bitcoin to decentralized finance. Trust in custodians is key.

How to use WBTC in DeFi?

WBTC enables Bitcoin in DeFi. Users convert Bitcoin to WBTC via custodians. They send WBTC to Ethereum wallets. DeFi platforms, like Uniswap, support WBTC. Users can trade it for other tokens. They can lend WBTC on Aave for interest. Staking WBTC in liquidity pools earns rewards. Always check platform security, as risks exist. Research custodians before converting. DeFi expands Bitcoin’s utility.

Blockchain networks connected to Bitcoin

Bitcoin connects to other blockchains. Wrapped Bitcoin operates on Ethereum, Polygon, and Solana. Layer-2 solutions, like Lightning Network, speed up Bitcoin transactions. They reduce fees for small payments. Sidechains, like Rootstock, enable smart contracts with Bitcoin. Cross-chain bridges transfer value between networks. These connections expand Bitcoin’s functionality. They link it to DeFi and NFTs. Interoperability is growing. Security remains a priority. These networks on DappRadar are connected to Bitcoin:

The future of BTC

Bitcoin’s future looks promising. Adoption grows among institutions, like hedge funds. Countries, like El Salvador, accept it as currency. Layer-2 solutions improve scalability. Energy-efficient mining could address environmental concerns. Regulatory clarity will shape its path. Price volatility may decrease over time. Bitcoin could become a global reserve asset. Moreover,innovations in Ordinals and DeFi expands the number of usecases. Its decentralized nature ensures resilience. As more projects tap into the networks security, Bitcoin will only become more relevant.

Closing words

Bitcoin revolutionized finance. It offers freedom from centralized control. Mining and energy use spark debates, but solutions emerge. Ordinals and WBTC show its versatility. Connected networks enhance its reach. The future holds growth and challenges. Bitcoin remains a bold experiment, inspiring innovation worldwide.