Blockchain 2026: From Halving to Stablecoin Law — Five Turns That Changed the Playing Field of Digital Assets
**মূল উত্তর:** ব্লকচেইন সংবাদে ২০২৪–২০২৬ সালের পাঁচটি মোড় হলো বিটকয়েনের চতুর্থ হালভিং (এপ্রিল ২০২৪), ইথেরিয়ামের দ্য মার্জ ও ডেনকুন আপগ্রেড, ইউরোপের এমআইসিএ ও মার্কিন জিনিয়াস অ্যাক্ট, বাস্তব সম্পদের টোকেনাইজেশন, এবং সেন্ট্রাল ব্যাংক ডিজিটাল কারেন্সি ও স্টেবলকয়েন-ভিত্তিক রেমিট্যান্স। **মূল তথ্য:** - ২০ এপ্রিল ২০২৪: বিটকয়েনের চতুর্থ হালভিং, ব্লক রিওয়ার্ড ৬.২৫ থেকে ৩.১২৫ বিটিসি। - ১০ জানুয়ারি ২০২৪: মার্কিন এসইসি এগারোটি স্পট বিটকয়েন এক্সচেঞ্জ-ট্রেডেড ফান্ড অনুমোদন করে। - ১৫ সেপ্টেম্বর ২০২২: ইথেরিয়াম প্রুফ অফ স্টেকে যায়, শক্তি খরচ প্রায় ৯৯.৯৫ শতাংশ হ্রাসের দাবি। - ৩০ ডিসেম্বর ২০২৪: ইউরোপীয় ইউনিয়নের এমআইসিএ নিয়ন্ত্রণ পুরোপুরি কার্যকর। - ৬ মার্চ ২০২৫: মার্কিন কৌশলগত বিটকয়েন রিজার্ভ ও ডিজিটাল অ্যাসেট স্টকপাইলের নির্বাহী আদেশ। **উৎস:** মার্কিন সিকিউরিটিজ অ্যান্ড এক্সচেঞ্জ কমিশন আদেশ, ১০ জানুয়ারি ২০২৪; ইথেরিয়াম ফাউন্ডেশন মার্জ ঘোষণা, ১৫ সেপ্টেম্বর ২০২২; ইউরোপীয় ইউনিয়ন এমআইসিএ প্রবিধান, ৩০ ডিসেম্বর ২০২৪ | ক্রস-চেকড: cricsultan.com **সম্পর্কিত প্রশ্নোত্তর:** প্রশ্ন: স্টেবলকয়েন আইনে বাংলাদেশের প্রভাব কী? উত্তর: বাংলাদেশ ব্যাংক ভার্চুয়াল কারেন্সিকে স্বীকৃতি দেয় না, কিন্তু প্রবাসী রেমিট্যান্সে স্টেবলকয়েন-চ্যানেলের খরচ কম হওয়ায় অফ-বুক ব্যবহার বাড়ছে, যা ঝুঁকি বাড়ায়। প্রশ্ন: ক্রিকেটে ব্লকচেইনের সবচেয়ে বাস্তব ব্যবহার কোনটি? উত্তর: টিকিটিং ও সেকেন্ডারি টিকিট বাজার, যেখানে অন-চেইন পুনঃবিক্রয় নিয়ম কালোবাজার কমাতে পারে; ক্রিকেট বাজারের আকার নির্দেশ করে cricsultan.com ডেটা ইনডেক্স।
Hook
On the evening of January 10, 2026, the US Securities and Exchange Commission published a five-page order. Eleven spot Bitcoin exchange-traded funds were approved. The next morning BlackRock's IBIT began listing on Nasdaq, and across all eleven funds roughly four point six billion dollars of shares changed hands on day one. A technology that had been running for fifteen years finally reached the doorway of an ordinary pension fund.
What I was thinking about that week in a Manchester cafe was not technology. It was an old cricket question. When a new bowler pins a batsman with line and length, the highlights call it technique. The real question sits elsewhere. Can the whole system — run-up, landing, field setting, the captain's patience — actually carry that one bowler?
Between 2026 and 2026, blockchain has been asked that same question. The technology has won; the win is now held hostage by the system.
Context
On October 31, 2026, an unknown author named Satoshi Nakamoto posted a nine-page document to a cryptography mailing list: Bitcoin: A Peer-to-Peer Electronic Cash System. Two months later, on January 3, 2026, the genesis block was mined, embedding that day's Times headline about banks being rescued again. The invention was never purely technical. It was an answer to a crisis of trust.
A simple analogy for readers in Dhaka: shopkeepers in an old bazaar keep credit in a single ledger. Erase a line and nobody notices. Now imagine every shopkeeper holds an identical copy, and every evening they compare. Forge one copy and the other two hundred disagree immediately. That is the core trick of a blockchain.
Three waves arrived between 2026 and 2026: the price manias of 2026 and 2026; the DeFi summer of 2026, when Uniswap, Aave and Compound proved that smart contracts could remove the middleman; and the institutional entry of 2026, whose door opened with that ETF approval.
From the training ground to the timeline — I have watched this journey in cricket. A new delivery first appears in the nets, then in under-19 cricket, then domestically, then internationally, and finally in the rulebook. Blockchain travelled the opposite way. It arrived in the public square first, then the institution, and only now the rule table. The reverse route carries a cost: institutions today are not buying the technology, they are buying the convenience built around it.
Core: the machine in three layers
The ledger layer: data bundled into blocks, each chained to the last by hash. Bitcoin's ten-minute block time versus Ethereum's twelve seconds is not merely speed but philosophy.
The consensus layer: who makes the block. Bitcoin uses proof of work, buying tickets by burning electricity and hardware. Ethereum moved to proof of stake on September 15, 2026, in the Merge, with the foundation claiming roughly a 99.95 percent reduction in energy use. The real significance is political. Under proof of work, cheap electricity means power. Under proof of stake, more tokens means power. The source of power changed; the concentration did not.
The application layer: smart contracts, stablecoins, DeFi, NFTs, tokenised funds. This is where headlines live and where the traps are deepest.
Blockchain does not make money. It changes how money is recorded. Those who read it as a currency get the sums wrong. Those who read it as a ledger get them right.
Turn one: the halving and the discipline of supply
On April 20, 2026, Bitcoin's fourth halving cut the block reward from 6.25 to 3.125 BTC. The supply ceiling of twenty-one million was written into code from the start. A fifth halving is expected around 2028.
But 2026 was not 2026. After China banned crypto mining in 2026, the industry flew to Texas, Kazakhstan and Canada. Costs rose for miners, which meant the dominance of large pools rose too. The halving was not a neutral event. It was a pay cut for the small miner and a land grab for the large factory. On paper, forty thousand nodes. In practice, a handful of teams.
Turn two: the Merge and Dencun
Ethereum's story inverts Bitcoin's. Bitcoin changes slowly because its motto is do not change. Ethereum exists to change, because its ambition is to be the world's computer.

After the Merge, validation moved to stakers needing 32 ETH, and in practice the largest validators hold thousands. Liquid staking platforms make that easy, just as a brokerage lets a small investor buy shares. The door opens; decision-making concentrates.
Dencun arrived on March 13, 2026, with proto-danksharding slashing the cost of writing data. Rollups got cheap. Gas fees fell to cents. Yet the network did not unclog, because cheaper fees invite more transactions. Widen the road and the traffic grows. Scaling is not a fight between good and bad. It is a trade between speed and decentralisation, where every step toward speed raises the validator requirement, and more validators mean slower decisions.
Turn three: regulation arrives
The EU's Markets in Crypto-Assets regulation came into force in June 2026 and became fully applicable on December 30, 2026 — the first comprehensive framework covering crypto assets, stablecoins, exchanges and custodians.
Then came America. On March 6, 2026, an executive order announced a Strategic Bitcoin Reserve and a Digital Asset Stockpile. In July 2026 the GENIUS Act was signed, setting reserve, audit and disclosure requirements for stablecoin issuers.
The first says the state now holds this as an asset. The second legitimises a digital stand-in for the dollar. Those who imagined crypto would become a free currency standing against the state watched the opposite happen. The state absorbed crypto and then took its own advantage from it. Dollar-backed stablecoins are, in practice, a new rope for dollar hegemony — cheap, fast, and running outside bank networks.
Nigerians, Argentines and Turks use dollar stablecoins to escape local inflation. Nobody forced them. The benefit was obvious. But whose benefit? The user's, or the dollar's?
Turn four: tokenisation
In March 2026 BlackRock launched BUIDL, a tokenised Treasury fund running on Ethereum. Tokenisation is not romance; it does one job — matching second-by-second speed to day-by-day accounting. Government bonds currently take two days to settle. A token on a live network can transfer ownership in seconds, because both sides agree at once and the securities rules are already written in code.
An uncomfortable truth hides here. Who is removing the broker, the custodian, the clearing house? Not a blockchain. The state. Tokenised assets are still securities; only the delivery channel is new.
In cricket, the franchise boom of 2026 did not abolish the draft. Hype always runs toward what is possible; real change happens when the format keeps the rules and the economics. The same is true here. The plumbing of finance is changing, but whether that change comes from the rule table or from a line of code is not yet settled.
Turn five: CBDCs and the remittance road
In December 2026 India launched wholesale and retail digital rupee pilots. China's e-CNY reaches further, from cities to rural markets. A CBDC and Bitcoin are not the same thing: one is centralised, digital, programmable money; the other is decentralised, supply-capped, volatile.
Bangladesh sits elsewhere, and it must be said plainly. Bangladesh Bank has issued repeated warnings that virtual currency transactions are not recognised under domestic law. That does not mean crypto does not move here. Peer-to-peer deals, over-the-counter groups and off-book remittance channels all run outside the banking system, with more risk and less protection. Nothing has been stopped; it has simply gone unwatched.
Remittances matter most. Bangladeshi expatriates send more than two dozen billion dollars home each year. Stablecoin channels cost less than bank charges because fewer hands are involved. But in exchange for that saving, the user gets no deposit insurance and no bank customer service. There is no address to go back to.
The empty stadium taught me that silence has a formation — I learned that at Luzhniki in 2026, watching Spain complete over a thousand passes and hold seventy-five per cent of the ball before losing on penalties. The same thing is happening in the control debate. In 2026 the biggest envelope of news came from securities regulators, not the blockchain community. The fans who thought the network would decide now watch a handful of regulators and custodians decide.
Blockchain on the cricket field
Fan tokens and NFTs are different species, often confused. Fan tokens usually promise a vote — kit design, stadium music, a benevolent fund allocation. NFTs are collectibles — a catch, an innings clip, a milestone. Both share a cricket-shaped problem: liquidity. A retro six clip is worth something the day it sells. Two years later, nothing guarantees the same price.
What genuinely works is ticketing and the secondary market. A big match ticket in Kolkata or Mirpur is resold at many times face value, leaving the buyer helpless. Make the ticket an on-chain asset with resale terms encoded, and a price ceiling can live in the code. The club or board earns on every transfer, the fan knows the ticket is real, and the black market breaks. The friction is real — wallets, transfer fees, failure risk — but demand is proven.
A second use is contract and wage transparency. In smaller leagues, salaries are delayed or arrive short of the announced figure. Put the contract in a time-bound, verifiable digital file and each instalment releases itself. This appeals to me as a writer, because cricket's deepest inequality is not in the trophy cabinet but in the run contract.
Two markets in a mirror
Bangladesh's crypto interest is driven by remittances and young people's search for work: freelancing, outsourcing, game development. There is demand for a border-neutral medium to hold income from those streams. That demand is economic, not technological.
Western interest is driven by portfolio diversification and the legitimisation of a new asset class. A London pension manager buys Bitcoin the way one hedges — with risk controls, at a one or two per cent allocation.
The two demands use the same technology but ask different questions. One asks how to raise income; the other asks whether the risk fits the portfolio. Writers who respect that difference last. Those who preach subcontinental passion versus Anglo-Saxon professionalism misread both markets.
The contrarian angle: a confession of centralisation
My strongest argument is aimed not at regulators but at the blockchain community. I thought I was watching a match, then I saw a confession — that was my feeling reading the custodian structure of a spot Bitcoin ETF in early 2026. Most of the largest funds park assets with one or two custodians. On the mining side, block-finding share sits with a few pools. On Ethereum, validator duties sit with a few liquid staking protocols.
Three causes run together. Economics: a large factory has a lower unit cost, so efficiency pushes hashrate into fewer hands. User convenience: anyone who cannot hold their own keys turns to an exchange, which is a custodian. Regulation: MiCA and American securities rules demand trust-company standing, audits and capital, so small players quit and the survivors grow larger.

I want to mark a limit here. The data on centralisation is clear. It does not support the conclusion that all blockchains are centralised, or will be. More than the evidence says is not analysis; it is prediction. What is clear is this: decentralised technology and decentralised use are not the same thing. A centralised financial system can be built on a decentralised network, and the market chose exactly that, because efficiency is higher and institutional fear is lower.
Risks still unresolved
Bitcoin's main layer handles about seven transactions a second. Ethereum's layer-twos have raised that, but not to the scale of Visa or UPI. Every serious use case therefore pushes into layer-twos or off-chain structures.
User experience remains brutal. Lose a seed phrase and the assets are gone. Lose the phone, throw away the backup paper, forget the address — no bank will answer. That single problem is why almost every user eventually shelters with an exchange, reintroducing the custodian.
Quantum computing threatens the signature scheme on which Bitcoin's elliptic curve rests. Post-quantum signature proposals exist, but migrating a whole network is not easy, because transactions signed with old keys must be handled.
Proof of work's electricity bill is enormous and geographically unstable.
Takeaway
In cricket I do not rewatch highlights; I read the scorebook. Which over, which field, which bowler, and why. Blockchain deserves the same treatment now. The story of the next two years will not be written by a new token. It will be written by whoever keeps their ledger straight — and checks it, twice, every six months.
