Bitcoin-Only vs a Crypto Portfolio: What Makes Sense for South African Investors

SimplB does one thing. I help South Africans buy Bitcoin, secure it properly and structure it sensibly. There is no Ethereum on the menu, no Solana, no basket of twenty tokens rebalanced quarterly. Prospective clients ask, reasonably, whether that is a philosophy or a limitation. The honest answer runs through how these assets are born, who controls them, what happens to most of them and what SARS does to you while you rotate between them.

Bitcoin and altcoins are not the same asset class

The word crypto does a great deal of damage here. It files Bitcoin and thousands of other tokens under one heading, the way a menu files water and brandy under drinks. Fidelity Digital Assets, not an organisation given to wild enthusiasm, put the distinction plainly in its Bitcoin First research: investors should hold two separate frameworks, one that evaluates Bitcoin as an emerging monetary good and a second that treats every other digital asset as a venture capital style bet. After a decade in this market I have not found a better one-sentence map of it.

The difference starts at birth. Bitcoin launched in January 2009 with no company behind it, no presale and no allocation to insiders. Its pseudonymous creator mined on the same terms as everyone else, then walked away and left nothing in charge except open code and the people who choose to run it. The supply limit of 21 million coins has never moved. Anyone can verify the whole system on hardware costing a few thousand rand. Fidelity describes the invention of digital scarcity as a one-time event, arguing that any later monetary good would be reinventing the wheel. I explain the mechanics in what Bitcoin actually is.

Every other coin was born differently.

Take Ethereum, because it is the strongest competitor and therefore the fairest comparison. It began as a whitepaper with an identifiable founder, Vitalik Buterin, in 2013. It launched through a presale, meaning a large share of the supply existed before the public could earn a single coin. Its consensus mechanism was replaced wholesale in September 2022 when the network moved from proof of work to proof of stake. Its issuance policy has been adjusted more than once by coordinated decision. None of this makes Ethereum bad technology. It makes Ethereum a managed platform, a distributed world computer in its own description, run by people who can change the rules you bought under. Running a validator requires a 32 ETH stake, one of the reasons Fidelity's own comparison scores it as more centralised than Bitcoin.

A monetary good cannot have a management team. The moment it does, you are trusting the team rather than the money.

Why a basket of tokens is not diversification

Diversification has a precise meaning. You hold assets that respond differently to the same events, so that weakness in one is cushioned by strength in another. Equities offset by bonds. Local risk offset by offshore. The concept earns its keep when correlations are low.

Crypto baskets fail that test at the exact moment it counts. When Bitcoin draws down hard, altcoins follow it down and usually further, because they are the higher-beta expression of the same sentiment. I have watched this in every major drawdown since I entered the market in 2016. The basket that looked diversified on the way up behaves like a single leveraged position on the way down. So what exactly is the second coin protecting you from?

There is a second problem the correlation numbers understate. Adding an altcoin does not simply add price exposure. It adds the founder's decisions, the foundation's treasury, the possibility of a protocol change, the chance of a regulator calling the token an unlicensed security. Bitcoin carries none of these because there is no issuer to charge and no team to make promises. A basket does not dilute those risks. It collects them.

Fidelity's framing helps again here. Allocating to non-Bitcoin tokens, its researchers write, is properly done with a venture capital mindset, small positions across many names in the expectation that most will fail and one or two might not. That is a legitimate activity. It is also nothing like saving. No venture fund would describe itself as a diversified store of wealth with a straight face.

One point rarely reaches clients: you do not need altcoins to participate in the industry's growth. The same research notes that Bitcoin remains a clear beneficiary of flows into the overall digital asset space. Money arrives for the casino and much of it settles, in time, in the vault.

Genuine diversification lives outside crypto altogether: equities, property, bonds, perhaps some gold, with Bitcoin doing one specific job among the rest. I set out that job in Bitcoin's place in a diversified portfolio.

What a full cycle does to altcoins

The leaderboard tells the story better than any argument. Fidelity's researchers compared the ten most valuable crypto assets of 2017 with the list from 2023. Dash, Monero, Augur, MaidSafeCoin, Steem, Ethereum Classic: all sat in the 2017 top ten and all had fallen out of the tier six years later, displaced by newer names like Solana and Cardano that barely existed the first time around. The churn is not a flaw in altcoin markets. It is their defining feature, since open-source code is trivially copied and every protocol sits one better-funded competitor away from irrelevance.

Even Bitcoin's own imitators prove the point. Bitcoin XT and Bitcoin Classic, forks that promised faster and cheaper payments, failed completely. Bitcoin Cash survives with a market value more than one hundred times smaller than Bitcoin's. The market examined improved versions of the same coin and declined the offer.

Monetary networks also concentrate. More users bring more liquidity and more security, which attracts more users, a loop Fidelity describes as a winner-take-all dynamic. Everyone storing value in a monetary network is picking a side in that contest, acknowledged or not. The contest has had the same leader since 2009 and no challenger has come close to taking the lead.

Then there are the endings nobody schedules. In May 2022 Terra, at the time one of the ten most valuable crypto assets on earth, collapsed to effectively nothing inside a week and erased tens of billions of dollars of savings. Six months later FTX, an exchange with its name on a Formula 1 car and a Miami arena, filed for bankruptcy. Neither event required Bitcoin to fail. Both had been sold to ordinary investors as diversification.

The graveyard does not advertise.

How SARS and the FSCA see a crypto portfolio

Start with licensing. In October 2022 the FSCA declared crypto assets a financial product under the FAIS Act, which pulled advice and intermediary services on them into the same licensing regime that governs the rest of financial services. I operate as a juristic representative of CAEP Asset Managers (FSP 33933). On paper the licence category covers crypto assets in general. In practice the obligation lands on a person, because an advisor must understand a product well enough to stand behind it years after the conversation ends.

I can carry that obligation for Bitcoin. Its rules have not changed since 2009, its risks sit in seventeen years of public record and nothing about it depends on a founder keeping promises. I could not honestly carry it for a rotating basket of protocols whose monetary policies get decided in developer calls. Very few people can, which should shape how much weight you give anyone selling a token portfolio with total confidence.

Then SARS arrives, holding the part almost everyone underestimates.

South African tax law treats the disposal of a crypto asset as a taxable event and disposal includes swapping one token for another. Move R200,000 from Bitcoin into an altcoin and you have disposed of Bitcoin at that day's rand value. The gain crystallises immediately, the record must be kept and the tax falls due in rand, even though no rand ever touched your bank account. Now picture a portfolio that rebalances across ten tokens every quarter. Every rotation is a disposal. Every staking reward and airdrop is income to be valued on the day it lands. A diversified crypto portfolio is, among other things, a machine for manufacturing tax events, most of which its owner never records. I covered the most common version of this trap in the stablecoin tax mistake.

A Bitcoin-only holder who buys and holds lives a beautifully boring tax life. The purchases get logged, nothing gets disposed and there is nothing to crystallise until a sale actually happens. Boring is underrated in tax.

The honest case for holding altcoins

There are honest cases on the other side and I want to state them fairly. A developer who builds on a network and earns fees in its token holds that token the way a farmer holds a bakkie, as a working asset rather than an investment thesis. A sophisticated investor who wants a venture-style bet, sized with money whose total loss would change nothing about their life, can take it with open eyes. Ethereum and Solana have shown that a platform which attracts developers and users can create real value. None of that offends me.

What I push back on is the framing. Those are venture decisions and they deserve venture-grade research and venture-sized allocations. They are not a savings strategy. Most of the token portfolios I get asked to review were never designed as anything. They accumulated during a bull market, one exciting story at a time.

The position I actually run

My own crypto exposure is Bitcoin and nothing else. That has been true through two full cycles and it is the position this whole practice is built around.

The practice is built the same way. Clients start a savings plan from R1,000 a month. From R10,000 I move them into self-custody, because an asset with no counterparty deserves to be held without one. Larger holdings go into the Vault, a two-of-three multisig arrangement where the client holds a Trezor and a Ledger and I keep only a Coldcard recovery key. I do five Vault setups a month because each one is done slowly and personally. OTC execution runs at any size, partly because Bitcoin's rand market is the only crypto market deep enough to absorb serious size without drama. Every piece of that stack exists because Bitcoin stands still long enough to build on. Nobody can engineer twenty-year custody around an asset that reinvents itself every eighteen months.

None of this means Bitcoin is safe in the way a bank deposit feels safe. It is volatile, it demands a five to ten year horizon and it asks you to learn habits your bank never taught you. I say that plainly to every client before they begin.

The test I offer is simple. Take every asset you own and give me one sentence on what it is for. Bitcoin's sentence is easy: it is scarce money outside the banking system that nobody can print more of. In ten years I have not heard an altcoin's sentence survive the first follow-up question. Until one does, I will keep holding the asset that has an answer and helping my clients do the same.