A crypto wallet does not really hold coins. It holds the private keys that authorize transactions on public blockchain networks. In a custodial wallet, a company holds those keys for you. In a self-custody wallet, you hold them yourself.

Self-custody means the keys stay with you

When you create a wallet in Aperture, the private keys are generated locally and encrypted on your device. Aperture does not ask you to create an account, upload a recovery phrase, or trust a server with the power to move your funds.

That design changes the risk model. You are responsible for protecting the recovery phrase, but you remove the exchange or custodian as a point of failure. No company account can be frozen, breached, or used to approve a transfer you did not start.

Plain-English definition: a self-custody crypto wallet is software that lets only the key holder authorize transactions. The wallet can help you read balances and prepare transfers, but it cannot move funds without the private key.

Why self-custody matters by the numbers

Crypto custody risk is not theoretical. Chainalysis reported that 2022 was the biggest year ever for crypto hacking, with $3.8 billion stolen, much of it from centralized services and bridge infrastructure. Read the source from Chainalysis.

The Bank for International Settlements also identifies custody and private-key control as foundational to how decentralized finance systems work.

$3.8B Reported stolen in crypto hacks during 2022, according to Chainalysis.
24 Networks supported by Aperture, including Bitcoin, Ethereum, and Solana.
0 Accounts required. No email, no KYC, no custodial login.

How Aperture handles private keys

Aperture is built around a small promise: your keys stay on your device. The app is open source at devdasx/aperture on GitHub, so developers and security researchers can inspect how wallet creation, encryption, transaction signing, and network support are implemented.

  • On-device generation: private keys are created locally instead of being issued by a remote account service.
  • Encrypted storage: keys are stored encrypted on the device and protected by the phone’s security model.
  • Open-source verification: anyone can read the code and confirm how keys and signing flows are handled.
  • No dApp browser or in-app swap: Aperture keeps the attack surface narrow by avoiding high-risk wallet surfaces.

Verification path: read the public repository, inspect the wallet domain code, compare the release notes, and never trust a wallet that asks you to upload a recovery phrase.

Before you send crypto from any wallet

Self-custody gives you control, but it also removes the safety net of a customer-support reversal. Use a simple checklist before important transfers.

  1. Confirm the network matches the recipient address.
  2. Send a small test transaction before moving a large balance.
  3. Review token approvals and revoke permissions you no longer use.
  4. Store the recovery phrase offline where only you can access it.
  5. Never share the recovery phrase with support, friends, websites, or bots.
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Aperture Editorial

Security-focused writing from the Aperture team, covering self-custody, open-source wallet design, and safer crypto usage across supported networks.

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