The latest WuBlockchain Weekly roundup highlights three major crypto developments: the 20 millionth bitcoin has been mined, Binance has responded to an Iran-related investigation, and BlackRock has launched a staked Ethereum ETF product now trading on Nasdaq.
The weekly roundup published on March 13, 2026, covers a range of industry events spanning supply milestones, regulatory friction, and institutional product expansion.
Top Stories From This Week’s WuBlockchain Roundup
KEY POINTS
- Bitcoin’s circulating supply has crossed 20 million BTC, representing roughly 95.25% of the 21 million maximum cap.
- Binance is responding to reports linking the exchange to an Iran-related U.S. investigation.
- BlackRock’s iShares Staked Ethereum Trust ETF (ETHB) launched on February 18, 2026, and has accumulated over $171 million in net assets.
Bitcoin Crosses 20 Million BTC Mined
Bitcoin’s total circulating supply has surpassed 20 million coins, with blockchain data showing 20,003,043 BTC in circulation as of mid-March 2026. That figure represents approximately 95.25% of bitcoin’s hard-capped 21 million supply.
The remaining supply, fewer than 1 million BTC, will be released gradually through mining rewards over the coming decades. Each halving event cuts the issuance rate in half, meaning the final bitcoin is not expected to be mined until around 2140.
This milestone reinforces the scarcity narrative that has long underpinned bitcoin’s value proposition. At the time of the roundup, BTC traded at $74,227, while the spot ETF market continued to see sustained inflows throughout March.
Binance Responds to Iran-Related Probe Reports
The WuBlockchain roundup flagged Binance’s response to reporting about a U.S. Department of Justice investigation into Iran’s alleged use of the exchange to evade sanctions. The roundup also noted that Binance filed a lawsuit against The Wall Street Journal over its coverage of the matter.
These claims have not been independently verified through official court filings or direct Binance statements accessible at the time of writing. The regulatory angle remains developing, and readers should treat the specifics with caution until primary documentation surfaces.
Exchange-level regulatory scrutiny has been a recurring theme in crypto markets. Investigations tied to sanctions compliance tend to weigh on sentiment, and the current Fear and Greed Index reading of 28, firmly in “Fear” territory, suggests the market is already operating under pressure.
BlackRock Launches Staked Ethereum ETF
BlackRock’s iShares Staked Ethereum Trust ETF, trading under the ticker ETHB on Nasdaq, launched on February 18, 2026. The fund had accumulated $171,569,917 in net assets as of March 16, 2026.
According to BlackRock’s product page, ETHB is designed to provide ether exposure combined with staking rewards through a standard brokerage-accessible structure. The fund removes the operational complexity of holding and staking ether directly.
“ETHB can help investors participate in staking rewards without the operational burdens associated with holding and staking ether directly.”
Source: BlackRock product page
The launch marks another step in BlackRock’s crypto product expansion. Institutional staking products like ETHB signal that traditional finance continues to build infrastructure around digital asset yield, not just spot exposure.
Why These Headlines Matter Beyond the Week
The three stories in this roundup touch on distinct but interconnected market forces: supply-side scarcity, regulatory risk, and institutional adoption.
Bitcoin’s 20 million milestone is structural rather than sudden. But it serves as a concrete reference point for the fixed-supply thesis at a time when BTC’s market cap sits at approximately $1.48 trillion. As the remaining supply shrinks, each halving cycle compresses new issuance further.
The Binance situation, if the investigation claims are confirmed, would add to a pattern of U.S. enforcement actions targeting major exchanges over sanctions compliance. For traders, this creates uncertainty around platform stability and jurisdictional risk.
BlackRock’s ETHB, meanwhile, reflects the opposite trend: regulated, accessible crypto products expanding into yield-bearing territory. With over $171 million in assets within its first month, the fund suggests meaningful institutional appetite for staked ether exposure through familiar financial rails.
The WuBlockchain roundup also referenced several additional developments, including Strategy’s reported purchase of 17,994 BTC for approximately $1.28 billion and a U.S. Treasury report that reportedly acknowledged legitimate uses for crypto mixers. These items remain unverified and were not independently confirmed at the time of publication.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.
