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What Is Bitcoin Custody?
Jackson Mikalic | Head of Business Development
Jan 13, 2025
Bitcoin custody is about protecting the keys that control your wealth. Unlike traditional assets, which always rely on custodians, trust companies, and financial intermediaries, Bitcoin gives investors the power and responsibility to hold their own money. But with that power comes risk and tradeoffs. How you choose to custody your Bitcoin determines how secure, accessible, and resilient your holdings really are.
At Onramp, we help investors navigate and secure Bitcoin for the long term, and custody is a crucial part of that. Whether you're securing a personal allocation or managing assets for your business or on behalf of others, here’s what you need to know about Bitcoin custody.
What Does Custody Mean in Bitcoin?
In traditional finance, custody refers to a third party, typically a bank or trust company, that holds assets on behalf of a client. You maintain legal ownership, but the custodian manages the recordkeeping of the asset.
With Bitcoin, things work differently. Bitcoin is a bearer instrument. Whoever controls the private key has control of the asset. Unlike traditional custody, which primarily involves recordkeeping, Bitcoin custody involves safeguarding the asset itself. If a Bitcoin custodian is compromised, the Bitcoin can be irreversibly lost.
Compare this to owning shares of a public company. If records are misplaced or mismanaged, the company still exists and the shares can typically be recovered. That’s not the case with Bitcoin. This is why custody is one of the most important decisions any Bitcoin investor will make.
At its core, custody means: Who manages the private keys? And what systems, redundancies, and safeguards are in place to protect them?
Self-Custody: Freedom with Responsibility
Self-custody means you control the private keys to your Bitcoin. It’s the purest expression of financial sovereignty. You don’t rely on an intermediary, and you can send or receive Bitcoin at any time, from anywhere.
But self-custody comes with tradeoffs:
- You are solely responsible for your security
- There’s no recourse if you lose your keys
- Estate planning can become complex and challenging for your heirs
- Malicious actors can target self-custody users
- Natural disasters or other unforeseen risks could compromise your custody setup
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