Digital Assets, Explained: Coins, Tokens, Custody, and Taxes: A Primer

Digital assets are units of value recorded on a blockchain, a shared digital ledger maintained by a network of computers rather than a bank or government. The category includes coins such as bitcoin, tokens built on platforms such as Ethereum, stablecoins pegged to the dollar, and NFTs representing unique items. The IRS taxes them as property, not currency, so nearly every sale, swap, or purchase made with them is a taxable event. How they are held, on an exchange, with a qualified custodian, or in self-custody, determines who actually controls them.

This primer explains the mechanics in plain language. Whether any of it belongs in a portfolio is a separate question, covered in our fiduciary framework article linked at the end. Digital assets are volatile, frequently targeted by fraud, and unevenly regulated; understanding the plumbing is a precondition for taking them seriously, not an endorsement.

What does a blockchain actually do?

A blockchain solves one specific problem: how to keep a trustworthy record of who owns what without appointing anyone to keep it. Traditional finance answers ownership questions with intermediaries; your custodian's ledger says you own the shares. A blockchain replaces the intermediary's ledger with a public database copied across thousands of independent computers that must agree, through a consensus process, before any new transaction is added.

Transactions are grouped into blocks, each cryptographically linked to the one before it, which is what makes the history effectively tamper-proof: changing an old entry would require redoing everything after it across most of the network simultaneously. Ownership is controlled by cryptographic keys. A public key works like an account number anyone can send to; a private key works like an unforgeable signature that authorizes spending. Whoever holds the private key controls the asset, full stop. There is no password reset.

That design buys censorship resistance and around-the-clock settlement without a middleman. It also removes the safety nets intermediaries provide: no fraud department, no reversing a mistaken transfer, no recovering a lost key.

Coins, tokens, stablecoins, and NFTs: what is the difference?

Coins are the native asset of their own blockchain. Bitcoin is the unit of the Bitcoin network, designed as a scarce, decentralized store of value with a fixed supply of 21 million. Ether is the native asset of Ethereum, a network built to run programmable applications, where ether also functions as the fuel paying for computation.

Tokens are assets created on top of an existing blockchain rather than having their own. They can represent almost anything: a stake in a project, a governance vote, access to a service, or, increasingly, a tokenized claim on a traditional asset such as a Treasury fund. Token quality varies enormously, from substantial projects to outright vapor, and many tokens raise unresolved securities-law questions.

Stablecoins are tokens engineered to hold a fixed value, usually one U.S. dollar, typically by holding reserves of cash and Treasury bills. They function as the cash leg of the crypto markets. The GENIUS Act, signed in July 2025, created the first federal regulatory framework for payment stablecoin issuers, including reserve requirements. A stablecoin is only as good as its reserves and its issuer; "stable" describes the design goal, not an assurance.

NFTs (non-fungible tokens) are unique tokens representing a specific item, such as digital art or a collectible. After a speculative boom and bust, they remain a small, illiquid corner of the market and, in many cases, may be taxed as collectibles, at rates up to 28 percent on long-term gains.

How are digital assets held, and what can go wrong?

Custody is the most consequential operational decision in digital assets, because ownership follows the private keys.

Exchange custody.Most investors buy through a centralized exchange and leave assets there. The exchange holds the keys; you hold a claim against the exchange. That claim is only as good as the company's solvency and controls, a lesson made vivid by the collapse of FTX in November 2022, where customer assets were commingled and lost. Exchange accounts are not bank deposits: FDIC insurance does not cover crypto, and SIPC protection does not apply to it either.

Qualified custodians and ETFs.Institutional-grade custodians, including trust companies chartered for digital asset custody, hold keys in segregated cold storage (offline) with audited controls and insurance programs. For many private investors, the practical route to this custody standard is indirect: spot bitcoin and ether exchange-traded products, approved in the U.S. beginning in January 2024, hold the underlying asset with institutional custodians and trade in ordinary brokerage accounts. The tradeoff is an expense ratio and the absence of direct control of the asset.

Self-custody.Holding your own keys in a hardware or software wallet removes counterparty risk entirely and replaces it with operational risk: lost seed phrases, theft, phishing, fire, and estate-planning failure. Self-custody also creates a genuine succession problem; if no trusted person or documented procedure can produce the keys at your death or incapacity, the assets are unrecoverable. Families that self-custody meaningful amounts need written custody procedures in their estate plan, not just a will.

How does the IRS tax crypto?

Since IRS Notice 2014-21, digital assets are property for federal tax purposes. The consequences are broader than many holders realize:

• Selling for dollars triggers capital gain or loss, long-term if held more than one year.
• Swapping one crypto for another, including into or out of stablecoins, is a taxable disposal at fair market value, not a like-kind exchange.
• Spending crypto on goods or services is a sale; buying a $6 coffee with appreciated bitcoin technically realizes a gain.
• Receiving crypto as compensation, mining, or staking rewards is ordinary income at fair market value when received, which then becomes your basis.

A hypothetical example: an investor buys 1 bitcoin for $60,000, and two years later, when it is worth $95,000, swaps it for ether. Even though no dollars were received, the swap realizes a $35,000 long-term capital gain, taxed at up to 23.8 percent federal (20 percent plus the 3.8 percent net investment income tax), roughly $8,330. The new ether takes a $95,000 basis. Investors who traded frequently in earlier years often discovered hundreds of such taxable events after the fact.

Reporting is tightening. Under final Treasury regulations, custodial brokers such as exchanges must report gross proceeds on the new Form 1099-DA for transactions beginning January 1, 2025, with the first forms delivered in early 2026, and must add cost basis reporting for covered transactions beginning January 1, 2026 (IRS, final broker reporting regulations). A separate rule that would have extended reporting to DeFi front-ends was repealed by Congress in April 2025, so decentralized platforms currently issue no 1099s; taxpayers remain fully responsible for reporting those transactions themselves. Since January 1, 2025, basis must also be tracked wallet by wallet rather than across all accounts (IRS Rev. Proc. 2024-28 provided the transition safe harbor). Every individual return asks a digital asset question that must be answered under penalty of perjury.

One planning footnote: the wash sale rule currently does not apply to digital assets because they are property rather than securities, though Congress has repeatedly proposed closing this gap. Do not build a strategy that depends on it surviving.

What frauds should investors expect to encounter?

Fraud in digital assets is not a tail risk; it is an everyday feature of the landscape, and wealthy individuals are specifically targeted. The recurring patterns:

• Investment scams ("pig butchering"). A contact cultivated over weeks by text or social media steers the victim to a fake trading platform showing fabricated gains; withdrawals are blocked once large deposits arrive. The FBI's annual crime reporting has repeatedly identified crypto investment fraud as the largest category of reported investment fraud losses.
• Impersonation and phishing. Fake exchange support staff, fake wallet updates, and lookalike websites exist to capture credentials or seed phrases. No legitimate party ever needs your seed phrase.
• Rug pulls and fake tokens. New tokens whose developers abandon the project after taking investor funds, often promoted by paid influencers.
• Promised-yield programs. Platforms promising high fixed returns on deposited crypto have repeatedly proven to be insolvent lenders or Ponzi schemes.

The defenses are unglamorous: never invest through a platform suggested by an unsolicited contact, verify URLs independently, use hardware-based two-factor authentication, and treat any promise of assured crypto returns as a stop sign.

Key facts

Frequently asked questions

Are digital assets the same thing as cryptocurrency?Cryptocurrency is the largest subset. Digital assets also include stablecoins, NFTs, and tokenized versions of traditional assets, all recorded on blockchains.

Is crypto on an exchange insured like a bank account?No. FDIC insurance covers bank deposits and SIPC covers securities at brokerages; neither covers digital assets. Your protection is the exchange's solvency, controls, and any private insurance it carries.

Do I owe tax if I trade one crypto for another without cashing out?Yes. Crypto-to-crypto swaps, including into stablecoins, are taxable disposals at fair market value under the IRS property treatment.

What is Form 1099-DA?The IRS information return that custodial digital asset brokers now file for customer sales: gross proceeds for transactions starting in 2025, with cost basis added for covered transactions starting in 2026.

What is the safest way to hold digital assets?There is no risk-free option, only tradeoffs: exchanges carry counterparty risk, self-custody carries operational and estate risk, and qualified custodians or spot ETFs put institutional controls between you and both, at some cost and loss of direct control.

Does owning a bitcoin ETF create the same tax complexity?Largely no. Spot ETPs trade like other brokerage assets with standard 1099-B style reporting, which is one reason many advisers prefer them for taxable investors who want exposure.

Where to go deeper

This primer covers what digital assets are and how the plumbing works; the investment decision is a different article. Does bitcoin belong in your portfolio? sets out our fiduciary framework for sizing, rebalancing, and risk, and explains why an allocation, if any, should be small and rules-based. For how custody works for your conventional assets, and why the qualified custodian model exists in the first place, see how your assets are protected at an independent firm.