Our weekly crypto derivatives analytics report delves into macro events; the current state of crypto and trading signals from spot trading volume; and futures, options and perpetual contracts.

Positive sentiment around potential US trade deals has fueled a sixth straight day of gains in risk-on assets. Bitcoin, boosted by this sentiment and its own drivers, such as strong ETF inflows and regulatory progress, has outperformed gold and equities, rising 14% over the past month and consolidating at $94K. Bitcoin’s implied volatility has decreased significantly, while realized volatility has stabilized above 30%, a level that’s been its floor for the past 18 months.

Please check out the report’s highlights.

Perp at months’ high; traders not yet all-in

After rallying from $75,000 to over $95,000 in early April, Bitcoin has traded sideways at around $94,000 this week. Open interest remains stable for April, near all-time highs at $8B, while trade volumes have decreased to $10B per day. Lower trade volumes correlate with lower realized volatility, and perp positioning suggests that traders are waiting for another rally before committing to major positions, mindful of recent sell-offs.

Bitcoin volatility declines to 18-month low

Bitcoin’s volatility has declined, nearing a previously held floor of 35–40%, a level from which it has consistently rebounded over the past 18 months. Implied volatility has followed a 10-point drop in realized volatility to just above 30%, the floor of its 18-month range. Options activity shows a preference for puts, as BTC’s spot price is remaining stable. Volatility smile skews favor out-of-the-money calls, particularly for long-term options, while short-term options are nearly neutral.

BTC volatility smiles skew toward OTM calls

Bitcoin's volatility smiles now favor out-of-the-money (OTM) calls across all tenors, recovering from a put-call skew that strongly favored puts earlier in April. Ether is showing a similar recovery at short tenors, but longer-term skew remains slightly bearish. While ETH funding rates are positive, longer-term option smiles are skewing toward puts, thus presenting mixed sentiment. For BTC, derivatives markets are indicating clearer bullish signals, including positive funding rate spikes, positively sloped futures yields and a skew toward OTM calls.

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Bybit X Block Scholes crypto derivatives analytics report (Apr 30, 2025): Bitcoin volatility at 18-month low; data shows traders aren’t yet all-in

Grayscale has launched the Bitcoin Adopters ETF, which tracks companies with a corporate Bitcoin treasury strategy. 

Daily top performer — Curve Finance (CRV)

The S&P 500 rose 0.15% as investors shrugged off recession fears and reacted positively to strong tech earnings, with focus now shifting to upcoming Apple and Amazon results. Gold dropped to $3,245 on US-China trade optimism and a stronger dollar, with Fed rate cut hopes cushioning losses. The Coindesk Indices, which tracks the broader crypto market, fell 0.51%, with Bitcoin and Ether down 1.24% and 0.86%, respectively in the past 24 hours. Trade these markets and more with up to 500x leverage on Bybit MT5 using this 

Today's top performer is CRV, which surged 11.4% after Spark's integration of new Curve pools, enhancing stablecoin liquidity and improving DeFi infrastructure.

Curve Finance (CRV), launched in 2020, is a DEX on Ethereum for low-fee swaps between stablecoins and similar assets, with yield-earning pools and DAO governance via the CRV token. Spark has 

 sUSDS/USDT and USDC/USDT Curve pools to its Spark Liquidity Layer (SLL), boosting stablecoin liquidity, enabling easier swaps, and supporting future direct USDT deposits and withdrawals via Spark Savings.

Check out the latest prices, charts, and data of 

 the Bitcoin Adopters ETF, which tracks companies with a corporate Bitcoin treasury strategy. The ETF includes firms like Tesla, Blockstream, and MARA. It reflects the growing trend of companies acquiring Bitcoin as a hedge against inflation. Grayscale's fund aims to provide exposure to companies in sectors like mining, automotive, and energy. Institutional BTC adoption, including Michael Saylor's Strategy, is driving Bitcoin's scarcity, which may lead to a supply crunch and rising Bitcoin prices in the future.

Yesterday, BTC spot ETFs saw $323.3M in outflows, with $32M from GBTC and $291.3M from other ETFs.

 its largest Galxe points event, running from May 4–8, 2025, where users can complete tasks to earn points. They also introduced the AlphaWave competition, a 7-day AI trading contest featuring 25 crypto agents. Users can vote for the agent they think will win to earn rewards and complete Galxe quests. New tasks will be added throughout the week.

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Grayscale launches Bitcoin Adopters ETF, tracking companies with BTC treasury strategies

Discover how USDY, a yield-bearing stablecoin from Ondo Finance, offers secure, regulated returns backed by US Treasuries across multiple blockchains.

, which are crypto assets pegged to a major fiat asset, have gained tremendous popularity and are helping investors deal with the typical volatility of the market. For many years, stablecoin cryptocurrencies have been used for payments, principal value storage, B2B transactions and more. However, traditional stablecoins have always lacked the ability to generate yield. These assets are fixed at a certain rate (e.g., $1) and, due to inflation, they don’t protect against your funds’ value erosion. 

 have started to gain traction over the past several years. These "new generation" stablecoins, unlike their traditional counterparts, not only provide rate stability but also generate yields, growing your investment over time. One of the leading assets among yield-bearing stablecoins is US Dollar Yield (USDY), issued by Ondo USDY LLC, part of 

Backed by low-risk traditional finance (TradFi) reserves, USDY generates yields and is a fully composable asset that can be used throughout the DeFi ecosystems of multiple blockchains. The reserves and issuance of the stablecoin are also subject to high regulatory controls. In the world of yield-bearing stablecoins, USDY is among the top choices in terms of popularity, regulation and security.

What is the Ondo US Dollar Yield (USDY) Token?

 (USDY) is a yield-bearing stablecoin offered by Ondo USDY LLC, part of the Ondo Finance DeFi solutions provider. 

USDY’s value tracks that of the US dollar, and it’s backed by Treasury bills and demand deposit reserves. The coin issuer’s parent company, Ondo Finance, specializes in institutional-grade crypto solutions. Ondo aims to make on-chain institutional-grade finance tools and infrastructure accessible to anyone.

USDY was launched in August 2023. As of April 2025, the stablecoin has become available on 

 — a level of multichain coverage that few other stablecoins can match.

While USDY’s price tracks the US dollar’s, its rate is typically somewhat higher than $1 because yields earned by each unit of the stablecoin are added to it, increasing its nominal value.

 (RWAs), primarily Treasury bills, although some portion of the reserves may also be represented by bank demand deposits. Both of these financial asset types are considered cash equivalents.

To ensure the Ondo ecosystem's security, Ondo backs each $100 equivalent of USDY with reserves worth $104, maintaining a 4% overcollateralization rate at all times.

Ondo Finance takes the transparency of USDY seriously. The company has established a bankruptcy-remote mechanism, with a separate corporate entity controlling the issuance and oversight of the stablecoin in various ways, including a board of directors with an independent director, and segregation of assets and reporting from Ondo.

USDY is a fully composable asset that can be used in the DeFi ecosystems of its host blockchains for various purposes, such as collateral, 

USDY provides several significant benefits for its holders. First, it allows eligible individual and institutional investors to earn dollar-denominated yield. This is in contrast to traditional stablecoins, which provide no yield opportunities at all. While other yield-bearing stablecoins also generate returns for holders, some of these pay the yields in volatile cryptocurrencies, rather than high-quality assets.

Thanks to its dollar peg, USDY offers both yield and relative stability. Additionally, it’s fully composable, creating opportunities for use across various DeFi protocols. USDY is available on seven blockchains, providing access to more DeFi opportunities than most yield-bearing stablecoins.

The coin may also be used for passive holding, growing in value over time as yields accrue. In this capacity, USDY represents a good low-risk, on-chain investment opportunity.

Finally, USDY’s overcollateralization and backing by high-quality TradFi assets, Treasury bills and demand deposits make it one of the most secure yield-bearing stablecoins on the market.

How does Ondo US Dollar Yield (USDY) work?

Individuals and institutional entities need to undergo an onboarding process to acquire USDY, during which they submit relevant identity, legal and tax documents. Ondo diligently applies 

 (AML) checks in order to adhere to US securities laws, the Investment Company Act of 1940 and other relevant regulations.

US and UK residents cannot apply to buy USDY, although you may be eligible if you’re a US or UK citizen and reside abroad.

If your application is approved, you can be issued USDY 40 to 50 days after your initial deposit date, although you’ll start earning yield from the first day of your investment. The minimum amount for investment or redemption is $500. You can buy USDY from Ondo using the 

 stablecoin. US dollar wire transfers are also supported for amounts over $100,000.

Redemptions are only transferred in US dollars to bank accounts outside the US. You can redeem your USDY investment at any time, and the typical timeline to receive your funds is about 2–3 business days from the date of your request.

USDY accrues yield daily. The stablecoin’s yields are structured not to incur any US federal tax obligations. Ondo doesn’t charge any performance or management fees for USDY yields. However, the company earns income from a portion of yields generated by the underlying assets backing USDY.

As noted earlier, USDY’s yields accrue to each unit of the token. Therefore, the value of one USDY is usually above $1. For instance, the average value of USDY as of the time of this writing (Apr 30, 2025) is $1.11.

For investors who prefer a fixed $1 rate for the stablecoin, Ondo offers the rebasing version, called rUSDY. Yields for rUSDY are paid to your wallet in the form of additional tokens by increasing the supply of the crypto, while the principal remains at (or very close to) $1. This is known as rebasing. USDY and rUSDY are freely convertible between each other.

The rebased version of the coin might be useful to those who need to ensure rate stability (for example, for B2B payments of agreed-upon contractual amounts) while also earning yields from their investments.

 as a swap pair with the USDT stablecoin.

USDY boasts numerous benefits for investors — low-risk yields from high-quality traditional assets, wide multichain coverage, regulatory compliance, transparency, composability and rate stability. The combination of all these benefits is quite rare in the crypto market, and the investor community is definitely taking note: USDY is already the third-highest-ranked yield-bearing stablecoin by market cap as of late April 2025. 

Since the yield-bearing stablecoin niche is expanding, the advantages of the USDY are likely to attract further interest, both among the institutional crowd and with individuals keen to access high-quality, institutional-grade crypto products.

Intermediate

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What is Ondo US Dollar Yield (USDY) and how does it work?

Discover the 7 top Sui meme coins in 2025, from MIU to HIPPO, as they gain traction with fast growth, strong communities, and unique use cases.

 blockchains, have continued to rally as investors make bold moves with renewed risk appetites. As a 

 blockchain, Sui has continued to attract crypto enthusiasts — especially meme coin lovers, who appreciate the platform's speed and affordability.

Recent surges in trading volumes and market caps of SUI meme coins — such as MIU, LOFI and BLUB — highlight growing investor interest. For instance, BLUB experienced an 88% increase in just 24 hours from Apr 22–23, 2025, contributing to the broader rally of SUI as its price surged over 63% in April 2025.

These coins often incorporate unique themes and philanthropic efforts, such as HIPPO's wildlife conservation donations, that foster strong community support.

Let's look at the top Sui meme coins making waves in the crypto market.

​Sui-based meme coins are rapidly gaining traction due to a combination of technological advantages and vibrant community engagement. The 

 parallel transaction execution and unique gas pricing mechanism enable ultrafast transaction speeds and minimal fees. This makes Sui an ideal platform for the high-volume, speculative trading that meme coins often entail. Sui’s scalability and secure Move programming language attract developers seeking efficient and safe environments for launching their new tokens.​

 (DeFi) further supports meme coin growth, providing avenues for increased utility beyond mere speculation. Following are the top ​Sui meme coins based on market cap, as of Apr 30, 2025.

 is currently the leading ​Sui-based “cat meme coin,” with a market cap of $70.6 million. It draws in investors with its fun, energetic branding and community-driven spirit. MIU also features expanded utility beyond its cute cat hype, allowing users to access DeFi and 

 (NFT) opportunities on its platform. It also promotes long-term commitment via its 

 process, as stakers can earn up to 15% APR with 12 months of staking.

The project frequently launches community events and contests, strengthening its dedicated holder base. MIU’s success highlights the growing appetite for meme tokens on scalable blockchains like Sui. Its playful appeal and strong tokenomics have positioned it at the top of the ​Sui meme sector. MIU is a 

 coin: its total supply is 9 trillion tokens, of which 55% are dedicated to a 

, 15% allocated to staking rewards, 15% to ecosystem development, 10% to community and 5% reserved for the team.

MIU continues to ride the wave of growing meme adoption, aiming to become a lasting force within the Sui ecosystem and beyond.

With a market cap of $35.86 million and over 50 million app users, 

 (MEMEFI) is an ambitious Telegram project that blends the world of memes with SocialFi utilities. Unlike typical meme coins that rely solely on hype, MemeFi aims to engage Telegram users with an interactive web3 meme-themed clicker game that offers daily giveaways and incentivizes ad creations for enterprises.

Its native token, MEMEFI, is more than just a mere meme coin, and has use cases for 

You can trade MEMEFI on Bybit’s Spot trading platform (

 is a rising ​Sui meme coin known for its chill "lofi vibes" branding that resonates with a younger, internet-native audience. Beyond its fun appearance, LOFI has demonstrated solid growth by tapping into communities through music, lifestyle and crypto.

The project also ties in eco-conscious initiatives, focusing on providing clean water sources for global communities and addressing the impact of ocean waste and plastic on marine health, giving it a mission-driven angle not typically seen in meme coins. Besides direct donating, minting LOFI Mystic Yetis NFTs also helps contribute to the cause, with 20% of the proceeds going to the LOFI Foundation.

Lofi’s accessible vibe and shrewd marketing strategy continue to attract new supporters, helping LOFI to stand out in the increasingly crowded ​Sui meme scene. 

 (commonly known as HIPPO) is a community favorite in the ​Sui meme world. The HIPPO token mixes humor with philanthropy, donating a portion of its revenues to wildlife conservation initiatives, starting with Thailand’s Khao Kheow Open Zoo that houses Moo Deng, the adorable pygmy hippopotamus that inspired this viral meme coin. This feel-good approach has helped build an extremely loyal community around the HIPPO token.

Sudeng’s dual focus on memes and real-world impact gives it staying power. The project’s growing community engagement ensures that HIPPO remains relevant in a fast-moving crypto space.

You can buy HIPPO as a USDT Perpetual contract on Bybit (

 is making waves in the ​Sui meme coin ecosystem with its aquatic-themed branding and integration of meme culture. Known for its friendly, community-first approach, BLUB frequently hosts giveaways, meme competitions and liquidity incentives to maximize engagement.

The coin’s fun branding and its steady increase in active users have helped BLUB climb the ranks quickly. Its strong online presence and viral meme campaigns have attracted crypto enthusiasts who are looking for the next breakout meme project. As it continues building partnerships and expanding its reach, BLUB demonstrates strong potential to become a staple in the Sui meme scene.

 (TOILET) is a rising meme coin on ​Sui that embraces humor and absurdity in a way that resonates with crypto culture. Its branding focuses on being intentionally ridiculous, tapping into the viral tone of meme coins that don't take themselves too seriously.

The project’s organic, community-driven growth has made it one of the most talked-about newer entrants in the ​Sui meme space. Frequent meme contests, community raids and spontaneous airdrops help fuel engagement. One of its biggest events is the distribution of Toilet Club Alpha Pass NFTs to the top 100 TOILET holders (as indicated by the Apr 21, 2025 screenshot), which gives holders access to all of Toilet Dust's projects and events and the right to vote on Toilet Dust's future development.

Despite its humorous façade, TOILET’s strong holder base and active marketing tactics suggest it may remain relevant as Sui’s meme coin ecosystem continues to expand.

 (FUD), another top project in the ​Sui meme coin category, is built around an adorable pug mascot battling FUD (fear, uncertainty and doubt) in the crypto world. With a humorous tone and clever marketing, FUD has built a vibrant community of holders who embrace both its memes and its mission.

FUD leverages trending memes, contests and airdrop rewards to keep its community marketing fresh and viral, helping it steadily grow in popularity. Its deep integration of ​Sui apps like 

 — as well as its deflationary tokenomics, whereby 20% is dedicated to token burning — makes FUD a strong contender for future growth in the meme space.

Buying ​Sui meme coins on Bybit can be exciting. Nevertheless, it's important to recognize the risks and rewards involved. 

, and their prices can swing wildly and quickly, offering chances for sizeable gains as well as sudden losses.

Always approach these investments with caution, never risking more than you can afford to lose. That said, the fast-growing ​Sui ecosystem and meme culture can create rewarding opportunities for traders who stay informed and manage their risk properly.

Currently, you can buy MEMEFI as a Spot pair and Perpetual contract on Bybit. HIPPO is also available as a Perpetual contract. This gives traders the flexibility to choose the type of exposure they want — simple buying and holding with Spot, or leveraged trading with Perpetual contracts.

Spot trading is the most straightforward way to buy ​Sui meme coins, as you directly purchase the coin and own it outright. On Bybit, the process is simple. After choosing the Spot pair, such as MEMEFI/USDT, select your preferred order type — e.g., 

(you set the price you're willing to pay) — and confirm the trade to make your purchase.

Spot trading is ideal for beginning traders, as well as anyone who prefers a more straightforward, lower-risk approach as compared to 

Buying Sui meme coins as Perpetual contracts

Bybit offers MEMEFI and HIPPO as USDT Perpetual contracts for those seeking more advanced trading options. With Perpetual trading, you don’t own the actual coins; instead, you speculate on their price movement. Key points to understand include the following:

Perpetual contracts can offer significant rewards, but require a strong understanding of 

. Always start with lower leverage and practice solid trading discipline.

Whether you prefer the simplicity of Spot or the strategy of Perps, Bybit provides flexible ways to explore the booming ​Sui meme coin market.

The rapid rise of meme coins on the Sui blockchain highlights the power of community-driven projects when they’re paired with innovative technology. Thanks to Sui’s high-speed transactions, low fees and developer-friendly environment, Sui meme coins like MIU, LOFI and HIPPO have found a perfect ecosystem in which to thrive. Each project brings something unique to the table — whether humor, philanthropy, DeFi innovation or pure meme culture — creating a vibrant and diverse ​Sui meme coin landscape.

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7 top Sui meme coins to pay attention to in 2025

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Bitcoin

The CAT20 token standard leverages Bitcoin's security and UTXO model to build advanced Bitcoin-based fungible tokens with high composability and smart contract-like functionality, 

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 (ETH) blockchain appeared on the horizon in 2015 with its 

 (DApps), many in the blockchain industry assumed that 

 (BTC) would eventually fade into obscurity. The world's oldest blockchain simply didn't have any of the novel features that its younger rival boasted. Fast-forward to nearly a decade later, and several innovative protocols and token standards have ushered in the era of a totally new Bitcoin, one featuring its own NFTs, fungible tokens and even smart contract–like functionality.

 protocol has enabled Bitcoin-based NFTs. The BRC-20 token standard, based on the same ordinal inscription theory, then introduced the ability to create fungible tokens on the chain. Soon afterward, the 

 protocol opened up a way to create fungible assets much more lightweight than 

 tokens. With all of these innovations, it seems that Bitcoin has finally found its groove in the new blockchain world.

In September 2024, another potentially paradigm-changing token standard, CAT20, was proposed for the Bitcoin network. CAT20 allows developers to create Bitcoin-based fungible tokens that adhere to both the blockchain's native standards and the 

 (UTXO) model, while introducing high composability levels, creating opportunities for complex smart contract–like functionality.

 is a new proposed fungible token standard for the Bitcoin blockchain (

The standard was proposed in September 2024 by the CAT Protocol team, and is applicable to any blockchain that supports the OP_CAT opcode. Opcodes are special scripts that instruct blockchain transactions to perform certain operations. The Bitcoin blockchain supported the OP_CAT opcode until 2010, when the platform's anonymous founder, 

, removed it due to security and transaction efficiency concerns.

Currently, there's a revived interest in OP_CAT within the Bitcoin user community, and several parties have proposed its reintroduction. If OP_CAT is re-enabled on Bitcoin, CAT20 will likely move from a proposed state to a fully implemented standard on the chain. Among the blockchain networks that currently support it is Fractal Bitcoin (FB), a 

 sidechain solution that supports higher speeds and scalability levels for Bitcoin transactions.

The recently proposed CAT20 standard is not to be confused with the much earlier (and unrelated) CAT20 standard for compliant security tokens and tokenized securities, 

To understand CAT20 tokens, it's crucial to be aware of what the OP_CAT opcode does. Originally available on Bitcoin, it lets developers con

enate (hence the name) two pieces of data together, potentially opening a way to create complex transaction functionality. However, OP_CAT also has a certain potential to be exploited for running denial-of-service (DOS) attacks and congesting the Bitcoin network.

Due to these vulnerabilities, Satoshi Nakamoto disabled OP_CAT, along with several other opcodes. OP_CAT, which the CAT20 standard heavily relies on, still isn’t functional on Bitcoin as of early October 2024. The primary rationale behind Nakamoto's decision probably lay in the desire at the time to keep Bitcoin strictly an environment for secure asset transfers and storage.

However, in the past few years, the blockchain has moved beyond its original state, with protocols and standards like BRC-20, Runes and Ordinals Inscriptions ushering in an era of a higher degree of network activity. Additionally, a variety of Bitcoin-linked Layer 2 solutions have contributed to the chain's ecosystem development. 

With all of these technologies now fully operational on the Bitcoin network, many of its community members have questioned the need to keep OP_CAT disabled.

At the end of the day, if BRC-20 tokens are allowed to proliferate on the chain, and various Layer 2 protocols have introduced smart contract-like functionality for it, why would an exception be made for OP_CAT? Voices clamoring to re-enable OP_CAT are growing louder by the day, and there's an expectation that the opcode may be switched back on. 

If and when that happens, CAT20 can support the creation and use of Bitcoin tokens with a significant degree of composability. Significantly, this could open up opportunities to leverage a variety of DApps within the Bitcoin ecosystem.

How Does the CAT20 Standard Affect the Bitcoin Blockchain?

Because CAT20 tokens are highly composable and modular, they could significantly increase the sophistication of Bitcoin transactions, potentially paving the way for full-fledged DApp functionality directly on the network.

At the same time, the ability to provide sophisticated functionality may lead to congestion on the network, due to the amount and complexity of operations these tokens are capable of producing. Bitcoin already struggles with the new standards and protocols — BRC-20, Runes and Ordinals Inscriptions — that have led to a large spike in activity on its network. The introduction of CAT20 tokens on the blockchain could further increase traffic levels.

CAT20 tokens adhere to Bitcoin's underlying security mechanism, which is based on the 

 (PoW) mining procedure. It’s been instrumental in establishing the blockchain's reputation as a highly secure transactional environment. By leveraging PoW, CAT20 tokens would ensure that their operations are protected to the same level as native BTC assets.

Besides PoW, another element that ensures Bitcoin's security is its well-regarded UTXO transaction model, whereby Bitcoin balances and transfers are represented by outputs from earlier transactions. CAT20 tokens are based on UTXO and directly leverage Bitcoin's own script at 

. This means that these tokens don't need to rely on off-chain indexers — software used to organize transactions and simplify the querying of the blockchain.

The CAT20 standard creates opportunities for cross-chain operations, as it can be implemented on any network that supports the OP_CAT opcode. We noted above that the Fractal Bitcoin Layer 2 sidechain is an example of a network with OP_CAT support. Besides Fractal Bitcoin, there are two notable Bitcoin forks with OP_CAT functionality enabled — 

CAT20 tokens have built-in functionality to support simplified payment verification (SPV). This technology allows lightweight clients such as mobile phones to verify the authenticity of CAT20 tokens in a decentralized and efficient way.

Although CAT20 holds certain potential for cross-chain interoperability, the existing network of chains that support OP_CAT (and which could thus theoretically support CAT20) is quite limited. The Fractal Bitcoin project is a new Layer 2 solution, still in the early stages of its market presence, while Bitcoin Cash and Bitcoin SV are minor players in the world of smart contract–capable chains. These two platforms both support some degree of smart functionality using their own unique mechanisms. 

Still, their DApp capabilities are far behind those of Ethereum and other smart contract chains, such as 

 (SOL). As such, the token standard's potential reach is relatively restricted, especially since OP_CAT is still not operational on Bitcoin itself.

CAT20's ability to support complex, composable functionality can potentially lead to network congestion, due to both the large amount of processing required and the general increase in demand for DApps. Bitcoin already struggles with the issue of congestion, and the introduction of CAT20 might exacerbate this problem. 

The chart below shows the number of Bitcoin transactions over the past three years (to Oct 6, 2024). It’s impossible to miss the gradual rise in network activity over the previous year or so:

The CAT20 standard is still in the early stages of its development. It’s been newly introduced and promoted by the CAT Protocol, and many practical details of its implementation have yet to be defined or made public.

The rise in on-chain activity and DApp usage that CAT20 could spur would likely affect not only network congestion levels, but also transaction costs. Bitcoin is already facing increases in these costs, due to the flurry of activity related to BRC-20 tokens, Runes tokens and Ordinals Inscriptions NFTs. With the arrival of CAT20, the costs of transacting on Bitcoin may rise further.

CAT20 has a number of advantages over the BRC-20 fungible token standard. First, unlike BRC-20, CAT20 requires no off-chain indexers. With all of its operations conducted strictly on-chain, CAT20 tokens enjoy both higher efficiency and a better security profile than BRC-20 assets do. Additionally, CAT20 technology allows for far more flexible and sophisticated functionality than what the BRC-20 token standard can provide.

CAT20 tokens share certain similarities with Runes, another highly popular fungible token variety on Bitcoin. Both tokens largely leverage the on-chain environment for their functionality, although Runes does require indexers while CAT20 doesn’t. Both standards can be lightweight, though in the case of CAT20 it largely depends upon the actual token design and intended functionality. In addition, both Runes and CAT20 tokens leverage Bitcoin's UTXO model.

However, the critical difference between these two token technologies is that CAT20 tokens can be used to enable fairly sophisticated DApps, ranging from 

 protocols. In contrast, the Runes protocol has mostly been confined to supporting 

ARC-20 is a standard designed for fungible tokens that supports digital ownership management and asset representation for collectibles and NFTs. While ARC-20 is a fungible token standard, its main focus is on digital representation for distinct items and NFTs. In contrast, CAT20 is designed for fungible tokens with diverse applications and use cases. 

While both token standards could potentially have use cases in 

 (DeFi) or other DApp niches, CAT20 assets are capable of supporting more sophisticated and programmable functionalities.

As of the time of this writing Oct 8, 2024), the future of the CAT20 standard is highly dependent upon whether and when the OP_CAT opcode is re-enabled on Bitcoin. This will be determined by the overall Bitcoin community via online discussions and proposal deliberations. Unlike some chains with highly structured on-chain governance processes, Bitcoin has a flexible, mostly off-chain and less structured process of making decisions on matters as important as the reintroduction of critical opcodes.

CAT20 was proposed in September 2024 and active discussions are ongoing. It might take the Bitcoin community a few weeks or months to decide on this issue. Of course, there's always the possibility that OP_CAT’s proposed reintroduction could either be rejected or left in limbo for an extended period.

The CAT20 standard is a significant step forward for Bitcoin, due to CAT20’s potential for relatively sophisticated programmability, reliance on Bitcoin's underlying security mechanism, UTXO-based nature and cross-chain interoperability. However, concerns about network congestion and rising transaction fees are running high within the Bitcoin community right now, primarily due to the avalanche of activity related to BRC-20, Runes and Ordinals Inscriptions. 

Nevertheless, there's hope that the Bitcoin community is capable of distinguishing between technologies that are mostly suitable for meme coin acrobatics, and those that can provide useful DApp-like functionality. At the very least, the team at CAT Protocol hope so — and will be keeping their fingers crossed. If OP_CAT is re-enabled, expect CAT20 tokens to become a new hit on the world's largest blockchain network.

What Is the CAT20 Standard & How Does It Work?

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