What is Bitcoin? It is a digital asset with a fixed maximum supply of 21 million units, recorded on a public ledger that no single company or government controls. For a CFO, the useful way to think about it is as a scarce bearer asset that settles globally, around the clock, without a bank in the middle.
This guide explains how Bitcoin works, what a company actually owns when it holds it, and the questions a finance team should answer before it goes near a balance sheet.
What is Bitcoin, in plain terms
Bitcoin launched in January 2009. It is two things at once:
- A network. Thousands of independent computers keep copies of the same ledger and agree on which transactions are valid.
- An asset. The unit of account on that ledger, also called bitcoin, which can be held and transferred.
There is no issuer, no balance sheet behind it and no promise to pay. Its value comes entirely from what buyers are willing to pay for it. That is the most important point for a board: Bitcoin is not a claim on anyone. It is closer to a commodity than to a bond or a deposit.
How the network keeps the ledger honest
New transactions are grouped into blocks roughly every ten minutes. Participants called miners compete to add each block by spending electricity on a computational puzzle. The winner receives newly issued bitcoin (the block subsidy) plus transaction fees.
This process, known as proof of work, does three things:
- It makes rewriting history very expensive.
- It sets a predictable issuance schedule.
- It lets strangers agree on one ledger without trusting each other.
The issuance schedule is fixed in the software. The block subsidy halves every 210,000 blocks, roughly every four years. The most recent halving took place in April 2024 and reduced the subsidy to 3.125 BTC per block. We cover this in the Bitcoin halving explained and Bitcoin's 21 million supply cap.
What a company actually owns
This is where many first conversations go wrong. A company does not hold a file or a token in a folder. It holds the ability to authorise movements of bitcoin recorded on the ledger. That ability rests on private keys.
Whoever controls the keys controls the asset. There is no helpdesk, no chargeback and no court order that can reverse a valid transaction on the network itself.
That makes custody a board-level question:
- Who can sign a transaction?
- How many approvals are required?
- Where are the keys stored, and how are they backed up?
- What happens if a signer leaves or a provider fails?
Most corporates use a regulated third-party custodian, a multi-signature arrangement, or a combination. See corporate Bitcoin custody: the options explained for the trade-offs.
How Bitcoin compares with familiar treasury assets
A short comparison helps frame the discussion with a board or audit committee.
| Feature | Cash deposit | Gold | Bitcoin |
|---|---|---|---|
| Issuer or counterparty | Bank | None (if allocated) | None (if self-held) |
| Supply | Elastic | Slowly growing | Capped at 21 million |
| Settlement | Banking hours | Days, physical logistics | Continuous, 24/7 |
| Price volatility | Very low | Moderate | High |
| Custody model | Bank account | Vault | Private keys |
The table does not argue for any asset. It shows that Bitcoin's profile is unusual, and that the governance around it has to be designed rather than borrowed from cash management.
Why some companies hold it, and why many do not
Companies that hold Bitcoin usually cite one or more of these reasons:
- A view that a fixed-supply asset is a useful long-term store of value.
- Diversification away from currencies that lose purchasing power.
- Strategic alignment with customers or products that use the network.
Companies that decline usually cite equally valid reasons: price volatility, earnings noise, custody complexity, regulatory uncertainty in some markets, or simply that it does not fit the treasury mandate. Both conclusions can be sound. The point is to reach one through a documented process. Our article on why companies hold Bitcoin sets out the arguments in more depth.
The risks a finance team must govern
Before any purchase, a CFO should be able to explain how the company will handle each of these:
- Price volatility. Bitcoin has experienced drawdowns of more than 70% in past cycles. Sizing and liquidity planning matter more than timing.
- Accounting. Under US GAAP, ASU 2023-08 requires fair value measurement through net income for fiscal years beginning after 15 December 2024. Under IFRS, holdings are generally intangible assets under IAS 38. Either way, results will move with the price.
- Custody and operational risk. Key loss, internal fraud and provider failure are real risks with no easy recovery.
- Counterparty and settlement risk. Large purchases go through brokers or OTC desks. How and when assets and cash change hands needs to be agreed in advance.
- Compliance. Transfers between service providers fall under the FATF Travel Rule, and AML and KYC checks apply at every step.
Companies should take their own accounting, tax and legal advice on how these apply to them.
CFO tip: before discussing whether to buy, ask your team to draft a one-page treasury policy covering sizing, custody, approvals and exit rules. If the policy cannot be written, the company is not ready to buy.
The full list is covered in the main risks of a corporate Bitcoin treasury, and the vocabulary is in our glossary.
How The Bitcoin World helps
We help finance teams understand Bitcoin well enough to make a governed decision, whatever that decision turns out to be. Where a company proceeds, we design the treasury strategy, policy, custody architecture and execution plan, and prepare materials for the board. Execution, custody and settlement are carried out by licensed third-party institutions, not by us. Learn more about our corporate treasury and board advisory work.