Crypto News Today: Polkadot Halving Goes Live, CPI Holds at 2.4%, BlackRock Staked ETH ETF Launches, FOMC Next Tuesday

Written by AffMiss Editorial · Published: 14 March 2026 · 9 min read

Polkadot “Pi Day” Halving Goes Live — Inflation Drops from 6.8% to 3.1%

Polkadot’s first halving event activated today, March 14 (Pi Day — 3.14). The network now operates under a hard supply cap of 2.1 billion DOT, with annual issuance cut from approximately 120 million to 55 million tokens — a 53.6% reduction. Inflation drops from 6.8% to 3.1% overnight.

The upgrade passed via governance referendums #1710 and #1828 with 81% approval. Unlike Bitcoin’s automatic halving every 210,000 blocks, Polkadot’s cut was community-governed and follows a π-based 13.14% decay formula applied every two years. By 2040, projected circulating supply falls to roughly 1.91 billion DOT — 44% less than the previous uncapped model would have produced.

Metric	Before Halving	After Halving (Today)
Total supply cap	Uncapped	2.1 billion DOT
Annual issuance	~120 million DOT	~55 million DOT (−53.6%)
Inflation rate	~6.8%	~3.1%
Next reduction	N/A	March 2028 (−13.14%)
Unbonding period	28 days	24–48 hours (new)

DOT rallied 40% ahead of the event (from ~$1.20 to $1.75) but open interest in DOT futures collapsed 50% from $120M to $60M as traders took profits. Bitwise analyst Danny Nelson cautioned that “nothing’s changed about Polkadot, its users, or its usefulness” and attributed the rally to broad market speculation. The 21Shares TDOT ETF ($11M seed, 0.30% fee, Nasdaq) provides institutional access at the exact moment supply dynamics shift.

US CPI Holds at 2.4% — Fed Rate Hold Locked In for March 18

February CPI came in at 2.4% year-over-year and 0.3% month-over-month — both in line with consensus. Core CPI (excluding food and energy) rose 0.2% monthly and 2.5% annually. This is the lowest headline CPI since May 2025.

The crypto market reacted with a muted move: BTC dipped briefly below $69,000 before recovering to ~$70,000. The in-line print neither strengthened nor weakened the case for near-term rate cuts. CME FedWatch shows 99% probability of a rate hold at the March 18 meeting and just 11% chance of a cut in April (down from 21% a month ago).

The bigger inflation risk lies ahead. WTI crude oil rose to $87/barrel (+4.2% this week) amid the Iran conflict. Analysts estimate every $10 oil price increase adds ~0.20% to headline inflation. If Strait of Hormuz disruptions push oil above $100, March and April CPI could spike — removing rate cuts from the 2026 calendar entirely.

BlackRock Launches Staked Ethereum ETF (ETHB) on Nasdaq

BlackRock’s iShares Staked Ethereum Trust ETF (ETHB) began trading on Nasdaq this week. The fund holds spot ETH and stakes a portion of its holdings, allowing investors to earn staking rewards alongside ETH price exposure. This is BlackRock’s first crypto fund to incorporate staking — a structural shift from pure price-tracking products like iShares Bitcoin Trust (IBIT).

The staking component is significant because it creates yield on a crypto ETF — something traditional investors understand from dividend stocks and bond funds. If ETHB captures even a fraction of IBIT’s $55 billion+ in cumulative inflows, it could provide sustained buying pressure for ETH while reducing circulating supply through the staking mechanism.

$1.9 Billion in BTC Options Expire Today

According to Deribit data, approximately 27,000 BTC options contracts worth $1.9 billion expire today. The put/call ratio sits at 0.97 — neutral to slightly bearish. Open interest concentrates on puts between $55,000–$60,000 and calls at $75,000–$80,000. Max pain price: $69,000 (below current spot).

ETH options: 186,000 contracts ($394M) also expire today. Put/call ratio: 1.20 (bearish lean). Max pain: $2,000. The BTC 25-delta skew has been falling, indicating a shift from panic-driven hedging toward calmer positioning. Post-expiry, the removal of $1.9B in open interest frees up capital for new positions — watch funding rates and new OI buildup over the weekend for directional clues.

Spot BTC ETF Flows: $1.14B In, Then $228M Out

US spot Bitcoin ETFs attracted $1.14 billion in net inflows across Monday to Wednesday this week — three consecutive days of strong institutional buying. On Thursday, flows reversed to $228 million in outflows. The swing highlights how sensitive ETF flows remain to daily macro developments (oil prices, CPI anticipation, Iran escalation).

For context, ETFs absorbed approximately 46,000 BTC this time last year. In 2026, ETFs have been net sellers for the year — a structural shift that has removed one of the strongest sources of buying pressure. The midweek inflow burst was the first sustained positive streak since early February.

FOMC March 17–18: What to Watch

Variable	Expectation	Crypto Impact
Rate decision	Hold at 3.50%–3.75% (99% probability)	Priced in. No surprise expected from the decision itself.
Dot plot (rate projections)	Current median: 1 cut in 2026	If shifted to 0 cuts → bearish (BTC −8–12%). If 2 cuts → bullish.
Powell press conference	Language on “inflation progress” and oil risk	This is where the market-moving signal comes from. Dovish tone = risk-on.
Economic projections (SEP)	GDP, unemployment, inflation forecasts	Will reveal how the Fed factors the Iran war’s economic impact.

Historical pattern: BTC dropped after 7 of 8 FOMC meetings in 2025. Traders who wait 48 hours post-announcement for volatility to settle have found better entry points than those who react in real time. The base case: a 3–5% BTC dip in the 48 hours following the statement, followed by recovery if no hawkish surprise in the dot plot.

Crypto News FAQ — 14 March 2026

What is the Polkadot halving?

Polkadot’s first halving activated today, cutting annual token issuance by 53.6% (from 120M to 55M DOT) and introducing a hard supply cap of 2.1 billion DOT. Inflation drops from 6.8% to 3.1%. Approved via community governance with 81% approval. Unlike Bitcoin’s automatic halving, Polkadot’s uses a π-based decay formula with reductions every two years.

How did markets react to the CPI data?

February CPI at 2.4% (in-line) produced a muted reaction. BTC dipped briefly below $69K before recovering to $70K. The data confirms a Fed rate hold on March 18 (99% probability). No rate cuts expected until at least May, and the chances are falling as oil prices rise. The bigger risk is March/April CPI if oil stays above $85.

What is the BlackRock staked ETH ETF?

ETHB is BlackRock’s iShares Staked Ethereum Trust ETF, now trading on Nasdaq. It holds spot ETH and stakes a portion of holdings to generate yield — the first major crypto ETF to combine price exposure with staking rewards. This creates a dividend-like return on a crypto ETF, which may attract traditional income-focused investors.

What should I watch at the FOMC meeting?

The rate decision (hold expected) is less important than the dot plot and Powell’s press conference. If the dot plot shifts from 1 cut to 0 cuts for 2026, BTC could drop 8–12%. If it shifts to 2 cuts, that is bullish. Powell’s language on inflation and oil risk will set the tone. BTC has dropped after 7 of 8 FOMC meetings in 2025 — consider waiting 48 hours post-announcement before acting.