Bitcoin Price Today (BTC to USD), Live Chart & Market Cap

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Bitcoin (BTC)

Bitcoin is the world’s first decentralized cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It remains the largest cryptocurrency by market cap and the most widely adopted digital asset — the reference point against which every other crypto asset is measured.

Bitcoin operates on a public blockchain secured by Proof of Work mining. Miners compete to solve cryptographic puzzles, and the first to succeed adds a new block of transactions to the chain. This process, combined with a fixed supply cap of 21 million coins and halvings every four years that reduce block rewards, creates a predictable, deflationary monetary policy often compared to “digital gold.”

The network has achieved significant institutional adoption. Spot Bitcoin ETFs approved in January 2024 opened the asset to traditional finance, while companies like MicroStrategy (now Strategy) hold Bitcoin as a treasury reserve. Bitcoin is also used for remittances, payments in countries with unstable currencies, and as a hedge against inflation. The ecosystem continues to evolve with innovations like Ordinals, BRC-20 tokens, and Runes bringing new functionality to the base layer.

Self-custody remains central to Bitcoin’s design: holders use software or hardware wallets, multi-signature setups, and offline storage to reduce exchange and counterparty risk. Layer-2 systems such as the Lightning Network aim to scale small payments while anchoring security to the main chain.

How Bitcoin Works

Bitcoin’s core innovation is solving the double-spending problem without a trusted central authority. Every ~10 minutes, miners compete to propose the next block of transactions. The winning miner earns newly-issued BTC plus transaction fees and adds their block to the chain. Subsequent blocks build on that one, and the chain with the most accumulated proof-of-work is considered canonical.

Key technical components:

Proof of Work: Miners expend electricity to compute SHA-256 hashes; the difficulty adjusts every 2,016 blocks to maintain the ~10 minute block time regardless of total hashpower.
Supply schedule: Block rewards halve every 210,000 blocks (~4 years). The first block paid 50 BTC; by 2024 it paid 3.125 BTC. The last Bitcoin will be mined around 2140.
Transaction model: Bitcoin uses a UTXO (Unspent Transaction Output) model rather than account balances. Each transaction consumes existing UTXOs as inputs and creates new ones as outputs.
Script: A purposefully limited programming language for defining spending conditions. Unlike Ethereum’s Turing-complete smart contracts, Bitcoin Script is constrained by design to minimize attack surface.

The combination of these design choices makes Bitcoin the most conservative and security-focused blockchain in crypto. Base-layer changes are rare — the Taproot upgrade in November 2021 was the first major consensus change since SegWit in 2017.

Supply and Monetary Policy

Bitcoin’s monetary policy is the cleanest in crypto: a fixed 21 million cap enforced by network consensus. As of 2026, approximately 94% of total supply has been mined (~19.7M BTC in circulation). The remaining ~6% will be issued over the next 115 years through halvings.

Halving history:

2012: Block reward dropped from 50 BTC to 25 BTC
2016: Dropped from 25 BTC to 12.5 BTC
2020: Dropped from 12.5 BTC to 6.25 BTC
April 2024: Dropped from 6.25 BTC to 3.125 BTC
2028 (projected): Will drop from 3.125 BTC to 1.5625 BTC

The certainty of Bitcoin’s issuance schedule is the foundation of its “digital gold” thesis. No central authority can inflate the supply, no vote can change the cap, and no hidden issuance exists. Every BTC in existence or that will ever exist is traceable to a specific block reward or transaction fee.

Institutional Adoption and ETFs

The approval of US spot Bitcoin ETFs in January 2024 was a watershed moment. Before approval, institutional allocators faced real barriers to holding BTC: no regulated custody channel for most pension funds and RIAs, compliance friction around direct crypto exposure, and reporting complexity. The spot ETFs resolved these.

By early 2026, US spot Bitcoin ETFs have attracted cumulative net inflows exceeding $65 billion with assets under management north of $90 billion. BlackRock’s IBIT, Fidelity’s FBTC, and Ark 21Shares’ ARKB lead the category. The ETFs have become structural buyers of Bitcoin, absorbing a portion of new miner supply and contributing to long-term upward price pressure.

Beyond ETFs, corporate treasury adoption has expanded. Strategy (formerly MicroStrategy) holds over 720,000 BTC valued near $50 billion. Other public companies (Tesla, Block, Marathon Digital, Tesla, MARA, CleanSpark) hold smaller positions. Moody’s rated the first Bitcoin-backed corporate bond in early 2026 — an important credit-market milestone.

Bitcoin Use Cases in 2026

Store of value: The dominant use case. Long-horizon holders (“hodlers”) treat BTC as a hedge against fiat debasement, comparable to gold but portable and divisible.

Remittances and cross-border payments: Small but growing. Bitcoin’s Lightning Network enables near-instant, near-free payments. El Salvador’s legal-tender experience and ongoing Bitcoin-Lightning integration by payment processors have expanded practical use.

Emerging market wealth preservation: Countries with high inflation or unstable banking systems (Argentina, Turkey, Nigeria, parts of Venezuela) see meaningful grassroots Bitcoin adoption as an alternative to deteriorating local currencies.

Collateral in DeFi: Wrapped Bitcoin (WBTC, tBTC) brings BTC liquidity to Ethereum and other chains. Users can collateralize loans, earn yield, or participate in DeFi without selling their BTC.

Institutional treasury allocation: Beyond Strategy’s extreme commitment, smaller corporate treasuries hold 1-5% of reserves in BTC as a long-duration inflation hedge.

Risks and Considerations

Bitcoin is not risk-free:

Volatility: 60-80% drawdowns have occurred in every cycle. Position sizing matters more than entry timing.
Macro conditions: BTC correlates with risk assets during drawdowns. A sustained dollar-strengthening regime or prolonged Fed tightening typically pressures prices.
Regulatory evolution: While friendlier since 2024, political cycles can reverse. A major regulatory reversal would force repricing.
Quantum computing: A very long-tail threat to Bitcoin’s ECDSA signatures. The protocol has migration paths but implementation takes years. Our quantum computing threat to Bitcoin guide covers the technical detail.
Custody risks: Exchange failures (FTX, Celsius, Mt. Gox) have cost customers billions. Self-custody eliminates this but adds seed-phrase management responsibility.

How to Buy Bitcoin

Multiple regulated pathways exist in 2026:

Spot Bitcoin ETF through any major brokerage (Fidelity, Schwab, Robinhood). No self-custody, ETF custodian handles storage, tax-simpler for retirement accounts.
Regulated crypto exchange (Coinbase, Kraken, Gemini, Fidelity Crypto). Direct purchase, can self-custody by withdrawing to hardware wallet.
Bitcoin ATM (Bitcoin Depot, CoinFlip, Coinhub). Convenient for small cash purchases but fees are high (7-15%).
Peer-to-peer (Bisq, Hodl Hodl). More privacy but higher friction and counterparty risk.

For most new buyers, a regulated exchange is the simplest path. See our how to buy Bitcoin guide for the full walkthrough, and the Coinbase vs Kraken vs Gemini comparison for picking a venue.