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The Blockchain Trilemma

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The Blockchain Trilemma

The Blockchain Trilemma


Blockchain is a technology that has emerged partly to provide greater freedom and fluidity in managing money. Moreover, it acts as a technology that accelerates the exchange of information and valuable assets between participants in a process, eliminating the dependence on intermediaries. 

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As for the characteristics of Blockchain technology, we could highlight three: 

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  • Immutable and shared: It only allows information to be added. Therefore, it is a record of information that cannot be modified. In addition, an identical copy of the information is distributed to all participants.

  • Decentralised and scalable: There is no central operator, which makes it highly reliable as there is no single point of failure or attack. In addition, participants are organised by common consensus to validate stored information. Moreover, it has the ability to grow naturally, so the platform’s power can grow progressively and based on demand. 

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  • Secure and robust: blockchain technology uses cryptography to store information, which makes it immune to fraud. It is also worth mentioning that it draws on increased computational power by combining the computing power of all connected computers. 

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What is this trilemma about?





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However, there is a problem linked to this technology: the so-called Blockchain Trilemma, a term coined by Vitalik Buterin. It consists of any developer having to sacrifice one of these characteristics to make room for the other two:




Scalability:

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In the blockchain, scalability refers to how large a network can expand in the future while maintaining the current transaction speed and performance level. When scalability and decentralisation operate together, security suffers because security prevents innovations that would allow the decentralised network to scale. This occurs because decentralised networks are difficult to scale since they require much effort to operate.

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Security:




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Blockchain networks are not entirely secure, as a hacker can modify a blockchain and manipulate transactions if he gains control of more than half of the network (51%). Therefore, the more nodes there are in a blockchain, the more secure it is.




Decentralisation

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:




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Most protocols use Proof of Work (PoW) to achieve greater decentralisation. This means that much energy is needed to operate, making transactions per second very low and, therefore, more difficult to scale.



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Solutions to the Blockchain Trilemma





In trying to solve this problem, some projects do so at layer 1, while others seek to address their weaknesses through a layer 2 solution.

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Layer 1:


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Layer 1 networks refer to blockchains, while layer 2 protocols refer to a third party’s integration of a layer 1 blockchain. For example, Bitcoin, Litecoin and Ethereum are layer 1 blockchains.


Layer 1 scalability solutions augment the base layer of the protocol itself to improve its scalability. They change the rules of the protocol to increase the speed and capacity to process transactions while adapting to process more data and serve more users.

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For example, a layer 1 scalability solution could increase the amount of data contained in each block on the blockchain.

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An example of a layer 1 enhancement is sharding, which in a nutshell, consists of dividing the state of the entire network into different data sets called shards. In this way, nodes have to maintain less of the network, which makes their work more manageable.


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These network shards are processed at the same time in parallel, allowing sequential work. Individual shards provide evidence to the main blockchain and interact with each other to share addresses, balances and other data using inter-shard communication protocols.


Layer 2:

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Layer 2 solutions refer to a network that operates on top of a blockchain to improve its scalability and efficiency. This type of solution passes part of the transaction load to an adjacent system that handles most of the network processing and reports back to the main blockchain upon completion of the results. In this way, the main blockchain is decongested.

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For example, the Lightning Network is a layer 2 solution created to improve the transaction speeds of the Bitcoin network.


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Other layers 2 examples are:


– Nested blockchains

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Nested blockchains are one blockchain built on top of another. A nested blockchain generally includes a primary blockchain that sets the parameters and a secondary network where executions occur. 

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– Sidechains


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These are a sidechain associated with the primary blockchain via a bidirectional connection. The purpose of sidechains is focused on managing a large number of transactions, as a sidechain could support the primary chain in validating different transactions in blockchain networks. In this way, the primary chain finds enough time to solve security problems.


– State Channels

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State channels facilitate the option of transacting without regard to the primary chains, allowing miners to spend less time on verification.

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State channels do not rely on verifying transactions at layer 1 of the blockchain and use smart contracts to do so. Once a transaction is completed, state channels ensure that the resulting state is stored in the primary layer. 


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– Rollups


Rollups are layer 2 protocols that can perform computations outside the primary chain. In addition, rollups can help manage transactions without any interference at the primary layer. As a result, rollups guarantee the higher performance of blockchain transactions while ensuring cost reduction. 

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Conclusions


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A blockchain should have security, decentralisation and scalability. However, achieving a perfect balance in these three factors is difficult, which causes the Blockchain Trilemma: trying to improve scalability makes security and decentralisation suffer. On the other hand, improving the latter causes scalability to suffer.


The idea is to look for a second-layer solution that gets this problem out of the way. In this way, we can get scalability in these solutions while the first layer takes care of decentralisation and security.

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Bitcoin and Ethereum ETF Options Trading Unlocked as Final U.S. Exchanges Drop Contract Limits

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Brian Armstrong's Bold Prediction: AI Agents Will Soon Dominate Global Financial

Key Takeaways

  • NYSE Arca and NYSE American eliminated the 25,000-contract restriction on options for 11 cryptocurrency ETFs
  • SEC approval came with an expedited implementation timeline, bypassing the typical 30-day review window
  • Impacted products include ETFs from BlackRock (IBIT), Fidelity (FBTC), ARK 21Shares, Grayscale, and Bitwise
  • Cryptocurrency ETF options now qualify for FLEX trading with customizable contract specifications
  • All primary U.S. options trading venues have now eliminated these restrictions

NYSE Arca and NYSE American submitted regulatory amendments to the Securities and Exchange Commission eliminating the 25,000-contract restriction on options contracts linked to 11 Bitcoin and Ether exchange-traded funds. The SEC granted an expedited approval, bypassing the typical 30-day implementation window and allowing immediate effectiveness.

The 25,000-contract restriction was originally implemented in November 2024 during the initial launch of cryptocurrency ETF options trading. Regulators established this threshold as a protective measure aimed at preventing excessive market manipulation and limiting volatility exposure.

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The regulatory modifications apply to 11 distinct cryptocurrency ETF offerings. The roster includes BlackRock’s iShares Bitcoin Trust, Fidelity’s Wise Origin Bitcoin Fund, ARK 21Shares Bitcoin ETF, Grayscale’s Bitcoin and Ethereum trust products, and Bitwise’s Bitcoin and Ethereum exchange-traded funds.

Eliminating the restriction aligns cryptocurrency ETF options with existing regulatory treatment of commodity-based ETF derivatives at major trading venues. Options contracts on substantial, highly-liquid ETFs can now achieve position thresholds of 250,000 contracts or higher under conventional exchange protocols.

The amendments additionally authorize these investment vehicles to operate as FLEX options products. FLEX options provide market participants the ability to negotiate bespoke contract specifications, encompassing non-conventional strike prices, maturity dates, and exercise mechanisms.

During IBIT’s inaugural options trading session in November 2024, Bloomberg senior ETF analyst Eric Balchunas observed the product generated approximately $1.9 billion in notional value despite operating under the contract restriction.

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In October 2024, Kbit CEO Ed Tolson commented that the restriction wasn’t excessively limiting considering the $40 billion in Bitcoin open interest spanning futures and perpetual swap markets during that period. However, market participants viewed the limitation as inconsistent with treatment of comparable commodity ETF products.

Coordinated Exchange Transition Reaches Completion

Several trading platforms had previously taken action to eliminate the restriction ahead of NYSE’s decision. Nasdaq ISE and Nasdaq PHLX submitted regulatory filings to remove limitations in January. MIAX pursued identical measures during the same timeframe. MEMX submitted its proposal in February. Cboe filed its corresponding version in March.

With NYSE Arca and NYSE American finalizing their regulatory submissions, every significant U.S. options trading platform has now removed the restriction.

The SEC acknowledged the proposals present no novel regulatory challenges, referencing the identical modifications already operational at competing exchanges.

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Institutional Trading Implications

Eliminating the position restriction enables institutional market participants to implement more sophisticated hedging approaches, basis trading strategies, and portfolio overlay frameworks. Availability of FLEX options permits institutions to structure customized contract specifications for complex derivative products.

This operational flexibility existed previously for comparable commodity ETF products such as the SPDR Gold Trust and iShares Silver Trust, but remained unavailable for cryptocurrency ETF options until this development.

In a separate regulatory matter, Nasdaq ISE has submitted a pending proposal to elevate the position threshold exclusively for BlackRock’s IBIT to 1 million contracts. The SEC continues evaluating that submission, which has undergone five amendments to date. The public comment window for both NYSE regulatory filings concludes on April 13.

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Bithumb Aims to Reappoint CEO Lee Jae-won Amid Recent Regulatory Pain

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Bithumb Aims to Reappoint CEO Lee Jae-won Amid Recent Regulatory Pain

Bithumb, South Korea’s second-largest cryptocurrency exchange by trading volume, is reportedly seeking to reappoint CEO Lee Jae-won despite recent alleged anti-money laundering failures and other controversies, according to the Korea Times.

The exchange will convene its regular shareholders’ meeting on March 31, and a proposal to keep Lee in the top job will be put to shareholders, the Korea Times reported on Sunday, citing industry sources.

His current term expires at the end of the month, and a successful renewal would keep Lee as the exchange’s CEO for another two years. Cointelegraph has contacted Bithumb for comment.

Upbit is the top South Korean crypto exchange by 24-hour trading volume, according to CoinGecko, followed by Bithumb and Korbit.

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Bithumb is South Korea’s second-largest cryptocurrency exchange by trading volume. Source: CoinGecko 

Regulators hit Bithumb with penalties

In March, South Korea’s Financial Intelligence Unit reportedly issued Bithumb a six-month partial suspension and a 36.8 billion won ($24.2 million) fine over alleged anti-money laundering failures. 

Under the measures, the exchange will be banned from processing external crypto transfers for new customers from March 27 to Sept. 26.

The exchange also drew regulatory attention in February when it mistakenly credited 2,000 Bitcoin (BTC) per user instead of 2,000 Korean won ($1.40) during a promotional event, distributing a total of 620,000 coins that it couldn’t back up.

Bithumb is also awaiting the outcome of another probe into its order book sharing with an overseas platform and more penalties could pose a hurdle to license renewals, according to the Korea Times.

“Bithumb will be on edge awaiting the results of ongoing regulatory probes, as the company still needs to renew its virtual asset service provider license,” an industry official told the Korea Times.

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Related: South Korea moves to cap crypto exchange shareholder stakes at 20%: Report

South Korean crypto industry is rising

The crypto industry in South Korea has benefited from a friendlier environment after the election of President Lee Jae-myung in June last year, who has pushed forward with various crypto-related laws, including a bill to legalize stablecoins.

Three months earlier, crypto exchange users in South Korea surpassed 16 million, representing more than 30% of the country’s population.

The cryptocurrency market in South Korea is projected to reach $1.3 billion in revenue in 2026, according to online data platform Statista.

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Magazine: China’s ‘50x’ blockchain boost, Alibaba-linked AI mines Bitcoin: Asia Express