Eight Sleep, the temperature-regulating smart mattress company that has quietly become a staple among Silicon Valley's biohacking crowd, closed a $50 million strategic investment round, led by Tether — the world's largest stablecoin issuer.
Kosta Gushterov
Journalist
Kosta has reported on cryptocurrency markets and blockchain infrastructure since 2020, bringing over six years of hands-on experience in the crypto industry built through daily tracking of markets, trends, and emerging blockchain developments. Specializing in Bitcoin on-chain analysis, institutional ETF flows, and digital asset price action, his work at Coindoo has been cited by other news agencies and consistently covers market developments with a focus on data-driven reporting across Bitcoin, Ethereum, Solana, and XRP. Over the years, Kosta has contributed to multiple crypto media outlets in different regions, authoring over 6,000 articles across the sector. His reporting spans cryptocurrency markets and the broader fintech industry, tracking not only price action but also the technological and regulatory forces shaping the ecosystem. To support his analysis, Kosta actively leverages on-chain data and metrics from leading platforms such as Santiment, Glassnode, and CryptoQuant, enabling deeper, evidence-based market insights. He believes in the power of transparency and the data that underpins the blockchain ecosystem. His academic background in Marketing Management from Denmark further complements his analytical approach, adding a strong understanding of communication strategy and content positioning to his work.
Latest articles by Kosta Gushterov
Eric Trump went on the offensive last week, directing pointed criticism at three of America's largest financial institutions - JPMorgan Chase, Bank of America, and Wells Fargo - over what he described as a coordinated effort to kill crypto-friendly legislation before it reaches a vote.
The U.S. Securities and Exchange Commission has submitted a formal interpretation outlining how federal securities laws may apply to certain cryptocurrency assets and related transactions, signaling a potentially significant shift in how regulators approach the digital asset market.
While crypto markets spent much of 2025 debating which blockchain would dethrone Ethereum, stablecoin issuers were busy printing money - on Ethereum.
On March 3, 2026, TCS Blockchain and PayPal announced an integration of PayPal USD (PYUSD) into freight payment infrastructure - a move targeting one of the trucking industry's most persistent financial headaches: getting paid on time.
South Korean regulators are closing in on legislation that would fundamentally reshape who can own the country's major cryptocurrency exchanges.
Standard Chartered has recruited Naveen Mallela, the executive credited with building JPMorgan's blockchain payments empire from the ground up — a move that underscores just how seriously the bank is taking its digital asset ambitions.
Markets reprice rate expectations as the U.S.-Israeli coalition's conflict with Iran sends energy costs surging and inflation fears back to the fore.
Ondo Global Markets has become the first issuer to admit digital securities for trading under the regulatory framework of Abu Dhabi Global Market (ADGM), marking a milestone in the convergence of tokenized assets and established financial oversight.
Core Scientific has officially confirmed what the market had been watching unfold for months: the Texas-based company sold roughly 1,900 BTC in January for $175 million, averaging around $92,100 per coin.
Europe’s largest banks are moving closer to launching a regulated euro stablecoin, as the Qivalis consortium accelerates talks with crypto exchanges and liquidity providers ahead of a planned 2026 debut.
Bitcoin’s 2026 cycle is shaping up to be one of the most debated in its history. After reaching an all-time high of $126,296 in October 2025, the asset has pulled back roughly 45%, now trading near $67,600.
