2021's Largest Crypto Financing Rounds: A Record-Breaking Year in Blockchain Funding

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The cryptocurrency and blockchain sector witnessed unprecedented growth in 2021, marked by record-breaking fundraising rounds that reshaped the industry’s financial landscape. As institutional interest surged and market confidence rebounded, startups across the crypto ecosystem secured massive capital infusions—many of which set new benchmarks for valuation and investor participation.

Among the 12 largest venture capital rounds in crypto history, a staggering 10 were completed in 2021 alone, collectively raising $3.9 billion with five months still remaining in the year. This surge reflects a broader trend of mainstream adoption, technological innovation, and increasing trust from traditional financial players.

The Rise of FTX: A $900 Million Milestone

FTX – $900 million
Date: July 20, 2021 | Round: Series B | Post-valuation: $18 billion

The most significant deal of the year—and in crypto history—was led by FTX, the Antigua-based derivatives exchange founded by Sam Bankman-Fried. The $900 million private placement doubled the previous record set by Circle and catapulted FTX into the ranks of the world’s most valuable crypto companies.

Backed by elite investors including Paradigm, Sequoia Capital, Ribbit Capital, SoftBank, and Coinbase Ventures, this round not only validated FTX’s innovative product suite but also significantly boosted Bankman-Fried’s net worth to an estimated $16.2 billion.

👉 Discover how leading exchanges are shaping the future of digital finance.

Despite being a relative newcomer (launched in May 2019), FTX differentiated itself through advanced trading tools such as options, futures, volatility products, and leveraged tokens—features typically absent on platforms like Binance or Coinbase. With over $10 billion in average daily trading volume and revenue up tenfold year-to-date, FTX demonstrated explosive growth post-A round.

Circle and the USDC Revolution

Circle – $440 million
Date: May 28, 2021 | Investors: Fidelity, Marshall Wace, DCG, FTX

As a key player in digital payment infrastructure, Circle is best known for issuing USDC, one of the fastest-growing stablecoins. In 2021 alone, USDC’s market capitalization grew by more than 3,400%, surpassing $27 billion in circulation and facilitating over **$785 billion in on-chain transactions**.

This funding round preceded Circle’s strategic move to go public via a merger with Concord Acquisition Corp, a SPAC led by former Barclays CEO Bob Diamond. The transaction valued the company at $4.5 billion, signaling strong institutional appetite for regulated crypto-native firms.

Bitmain: Mining Giant’s $422 Million Raise

Bitmain – $422 million
Date: August 7, 2018 | Round: B1 | Post-valuation: $15 billion

Long before the 2021 boom, Bitmain, the Beijing-based manufacturer of Bitcoin mining hardware, raised $422 million in what was then one of the largest crypto financings. Known for its Antminer series and operation of Antpool—one of the largest Bitcoin mining pools—Bitmain briefly attempted an IPO in Hong Kong shortly after this raise.

However, declining Bitcoin prices and bear market conditions ultimately derailed its public listing plans. Still, Bitmain remains a dominant force in the mining ecosystem, controlling around 13% of the global Bitcoin hashrate.

Ledger: Securing the Future of Digital Assets

Ledger – $380 million
Date: June 10, 2021 | Round: Series C | Post-valuation: $1.5 billion

Hardware wallets are critical for secure digital asset storage, and Ledger leads this space with over 3 million units sold across 190 countries. Its companion app, Ledger Live, boasts more than 1.5 million monthly active users.

This $380 million investment—the largest ever in a crypto security company—was led by Cathay Innovation and Draper Esprit. Ledger has integrated with major platforms like Changelly, Coinify, and Compound, reinforcing its role as a bridge between DeFi and retail users.

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BlockFi and the Growth of Crypto Lending

BlockFi – $350 million
Date: March 11, 2021 | Round: Series D | Post-valuation: $3 billion

As one of the leading crypto lending platforms, BlockFi offers interest-bearing accounts and crypto-backed loans. Its rapid rise attracted investments from Bain Capital Ventures, Tiger Global, and DST Global.

Despite regulatory scrutiny—particularly over its BlockFi Interest Account (BIA) in Texas and Alabama—the company exemplifies the growing demand for yield-generating crypto products. Rumors of a potential IPO surfaced in mid-2020, highlighting investor confidence in its long-term viability.

Solana Labs: Challenging Ethereum’s Dominance

Solana Labs – $314 million
Date: June 9, 2021 | Type: Private Token Sale

Positioned as a high-performance alternative to Ethereum, Solana leverages proof-of-stake and proof-of-history mechanisms to achieve speeds exceeding 1,000 transactions per second (TPS)—far above Ethereum’s ~14 TPS.

Backed by Andreessen Horowitz (a16z) and Polychain Capital, Solana has hosted over 19 billion on-chain transactions and powered key DeFi projects like Serum, a decentralized exchange co-founded by Sam Bankman-Fried.

Fireblocks: Enterprise-Grade Custody Innovation

Fireblocks – $310 million
Date: July 27, 2021 | Round: Series D | Post-valuation: $2 billion

New York-based Fireblocks provides an enterprise platform for moving, storing, and issuing digital assets securely. Its standout feature is the use of Multi-Party Computation (MPC) technology—a next-generation wallet security model that eliminates single points of failure by distributing private key fragments.

Since its 2019 launch, Fireblocks has secured over $1 trillion in asset transfers, serving institutions like banks, exchanges, and hedge funds.

Dapper Labs: NFTs Go Mainstream

Dapper Labs – $305 million
Date: March 30, 2021 | Round: Series F | Post-valuation: $2.6 billion

Best known for creating NBA Top Shot, Dapper Labs brought non-fungible tokens (NFTs) into the mainstream spotlight. The platform has generated over $500 million in sales, proving that digital collectibles have real market value.

Prior to NBA Top Shot, Dapper developed CryptoKitties, one of the first viral Ethereum games. This latest funding round included participation from sports legends Michael Jordan and Kevin Durant, underscoring the crossover appeal between crypto and entertainment.

Bullish, Paxos, Blockchain.com & Bakkt: Expanding the Ecosystem

Other notable financings include:

FAQ Section

Q: What drove the surge in crypto fundraising in 2021?
A: Increased institutional adoption, bull market momentum, regulatory clarity in some regions, and growing use cases in DeFi, NFTs, and blockchain infrastructure fueled investor confidence.

Q: Why are stablecoins like USDC gaining traction?
A: Stablecoins offer price stability while enabling fast, low-cost global transfers. USDC, being fully backed and regulated, appeals to both retail users and financial institutions.

Q: How does MPC enhance crypto custody security?
A: Multi-Party Computation (MPC) splits private keys across multiple parties so no single entity holds full control—reducing risk of theft or internal fraud.

Q: Is FTX’s $18 billion valuation justified?
A: Given its rapid revenue growth (75x since Series A), high trading volumes, diversified product offerings, and strong investor backing, many analysts consider it well-supported.

Q: What role do SPACs play in crypto company listings?
A: SPAC mergers allow crypto firms to go public faster than traditional IPOs while securing capital from institutional investors—a trend seen with Circle, Bakkt, and others.

Q: Are hardware wallets still relevant in DeFi?
A: Absolutely. As DeFi usage grows, so does the need for secure self-custody solutions. Devices like Ledger protect users from phishing attacks and exchange hacks.

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Core Keywords:

The momentum seen in 2021 laid the foundation for sustained investment into blockchain technology. With continued innovation in scalability, security, and user experience, the next wave of crypto disruptors is already on the horizon.