Bitcoin

Bitcoin is a new electronic payment system that removes the need for third party financial institutions. It speeds up transactions while reducing costs and minimizing the potential for fraud. The name “cryptocurrency” points to how it uses “cryptographic proof” to work, AKA a blockchain.

Bitcoin’s concept was first introduced in 2008 when a person going by the pseudonym Satoshi Nakamoto shared a white paper titled “Bitcoin: A Peer-to-Peer Electronic Cash System.” In January 2009, the Bitcoin blockchain was launched. 

A new electronic payment system called Bitcoin removes the need for third-party financial institutions. It speeds up transactions while reducing costs and fraud-risk. The name “cryptocurrency” points to how it uses “cryptographic proof” to work, AKA a blockchain.   

Bitcoin has a finite supply of 21 million, which is expected to be reached by the year 2140. Currently, 18.8 million are circulating in the market. Note that Bitcoin represents the concept of the network, while bitcoin (lower-case ‘b’) represents the currency.

Bitcoin is one of the most well-known cryptos as it was the first decentralized currency. 

Currently, BTC’s dominance is above 40%. Bitcoin Dominance is a measure of how much of the total market cap of crypto is made up of Bitcoin. Bitcoin’s influence in the crypto ecosystem could be vulnerable to competition as alternative coins grow in popularity and utility.

Bitcoin BTC$108,594.04 holders facing steep tax bills have a new option to ease the burden — by converting what they owe into income-producing mining hardware.

Arch Aims to Help Bitcoin Holders Slash U.S. Tax Bill With BTC Mining Investments

Bitcoin Magazine Bitcoin's First Major Layer-2 in Nearly a Decade Goes Live With Arkade Arkade, the first significant Bitcoin layer-2 solution, launched today. Bitcoin's First Major Layer-2 in Nearly a Decade Goes Live With Arkade Micah Zimmerman.

Bitcoin's First Major Layer-2 in Nearly a Decade Goes Live With Arkade

Over 160 publicly listed companies have now adopted bitcoin as a core treasury strategy, collectively holding nearly a million BTC, about 4% of circulating supply. What began as a bold experiment by one firm has morphed into a global playbook: raise capital, buy bitcoin, and deliver partial equity exposure to bitcoin through a listed vehicle.

Bitcoin Treasury Companies, Wither Thence

On Oct. 21, bitcoin traded at $108,463 to $109,421 over the last hour, with a 24-hour price range between $107,557 and $111,555. The market capitalization stood at $2.16 trillion, while trading volume over the same period totaled $58.95 billion.

Bitcoin Price Watch: $109K Holds—But Is It Enough to Signal a Reversal?

Bitcoin ( BTC) briefly dropped to $107,460 on Oct. 21, erasing recent gains and pushing weekly losses to nearly 3%. SpaceX's $270 Million Treasury Transfer In the early hours of Oct. 21, bitcoin ( BTC) briefly dropped to $107,460 before recovering above $108,000.

Bitcoin Dips Below $108K After Elon Musk's SpaceX Moves 2,495 BTC

Bitcoin Magazine Aifinyo AG Plans To Accumulate Over 10,000 Bitcoin German fintech aifinyo AG became Germany's first pure-play Bitcoin treasury company, with a target of accumulating over 10,000 by 2027. Aifinyo AG Plans To Accumulate Over 10,000 Bitcoin Vivek Sen.

Aifinyo AG Plans To Accumulate Over 10,000 Bitcoin

From Bitcoin's first space transaction to tokenized lunar domains, blockchain is powering a new decentralized space race that makes access and ownership universal.

Are Bitcoin And Blockchain Powering A New Decentralized Space Race?

Elon Musk's rocket company SpaceX has moved almost $270 million worth of bitcoin, setting alarm bells ringing as crypto watchers ask if he's "planning to sell."

‘Are They Planning To Sell?'—Elon Musk Suddenly Sets Crypto Price Alarm Bells Ringing After Breaking His Silence On Bitcoin

Dogecoin

Ethereum

Bitcoin is hovering around $108,000 on Tuesday morning amid negative ETF flows and total crypto liquidations hitting $319.85 million, impacting 122,336 traders. The Fear & Greed Index has remained in the fear zone at 33 for a week.

Bitcoin, Ethereum, XRP, Dogecoin Drop Over 3% As Fear Abounds On Tuesday

Ark Labs also unveiled Arkade Assets, a multi-asset framework designed to bring stablecoins and other tokens to the offchain execution layer.

Ark Labs launches Arkade public beta, introducing a new native Layer 2 built directly on Bitcoin

The crypto market succumbed to selling pressure on Tuesday, with bitcoin BTC$108,222.79 and ether ETH$3,896.79 falling back from relative safety into a zone that could see the two largest cryptocurrencies by market value challenge multimonth lows.

Crypto Markets Today: Bitcoin, Ether Drop as Selling Pressure Returns

Aureo (formerly Swapido) announced a $1.1 million pre‑seed round with Early Riders to develop the first Latin America‑native Multi‑Institution Custody (MIC) solution and expand its bitcoin financial services from Mexico across the region.

Mexico's White‑Glove Bitcoin Platform Aureo Raises $1.1M Pre‑Seed to Build Latam Multi‑Institution Custody

Bitcoin dropped to around $107,000 after spending several days recovering from last week's sell-off that wiped out billions in leveraged positions. The downturn is now being interpreted by analysts as a market reset rather than a breakdown.

Bitcoin Drops as Market ‘Flushes Excess Leverage:' Crypto Daybook Americas

Bitcoin continues to struggle during one of its historically strongest months, often referred to as "Uptober," currently down more than 5% and trading below $108,000, as it approaches several critical support and resistance levels.

Bitcoin Battles Key Technical Levels as Uptober Momentum Fades

BTC was trading at $107,779 during the European morning, 2.8% lower in the last 24 hours, according to CoinDesk data. Ether ETH$3,867.46 and solana SOL$185.28 have both fallen more than 3.5%, while numerous other altcoins nursed losses in excess of 4%.

Bitcoin Falls Below $108K Amid $320M Liquidations as Excess Leverage Gets Flushed Out

The boom in share price for artificial intelligence (AI) and high-performance computing (HPC) companies since September has delivered extraordinary returns for bitcoin miners expanding into those industries, but the growth comes at a cost.

Debt-Fueled AI Pivot Puts Bitcoin Miners to the Test

Arkham data also reveals this transfer is the first material change to the company's total bitcoin holdings since June 2022.

SpaceX moves $270 million worth of bitcoin in first transfer since July: Arkham

Spot bitcoin ETFs in the US recorded $40.5 million in net outflows yesterday amid a broad recovery in crypto market prices.

Spot bitcoin ETFs extend negative streak to four days with $40 million in outflows

One analyst told The Block that crypto prices may continue to exhibit similar volatility in the near term.

Bitcoin slides below $108,000; volatility to continue amid US-China tensions: analyst

Analysts expects a measured market reaction to Friday's CPI report, noting that tariff concerns and labor data outweigh the inflation print.

Bitcoin Braces for First Inflation Test Since US Shutdown

Welcome to Asia Morning Briefing, a daily summary of top stories during U.S. hours and an overview of market moves and analysis. For a detailed overview of U.S. markets, see CoinDesk's Crypto Daybook Americas.Bitcoin is trading around $110,300 Tuesday morning Hong Kong time as Asia starts its business day, with ETH changing hands at $3,970.

Asia Morning Briefing: Bitcoin Holds Steady as Market Resets After Leverage Flush

The elusive “Hyperliquid whale,” known for massive leveraged trades on the decentralized exchange (DEX) Hyperliquid, has reloaded on a significant bitcoin ( BTC) short as of Oct. 20, 2025.

Hyperliquid Whale Reloads $121M Bitcoin Short at 10x Leverage

Block founder Jack Dorsey has recently highlighted the relevance of bitcoin as a transactional element, allowing peer-to-peer settlements between two parties away from centralized organizations. “ Bitcoin is money,” he stressed, commenting on Square's zero-fee processing for BTC payments.

Jack Dorsey Doubles Down on Satoshi's Original Vision: Bitcoin Is Money

Bitcoin Magazine Bitcoin Price Holds $111,000 as TD Cowen Predicts $141,000 by December TD Cowen thinks that the Bitcoin price will hit $141,000 by December. Bitcoin Price Holds $111,000 as TD Cowen Predicts $141,000 by December Micah Zimmerman.

Bitcoin Price Holds $111,000 as TD Cowen Predicts $141,000 by December

Zcash

Bitcoin BTC$111,296.88 traded just above $111,000 late Monday, up nearly 2% over the past 24 hours but off earlier highs. Ether ETH$4,061.94 slipped slightly below $4,000, down 0.2% on the day.

News for Bitcoin Crypto (BTC)