Concise, source-led field notes on the mechanics of digital assets. Evidence and editorial interpretation are kept visible.
FIELD NOTE / 01
Who controls the keys?
A wallet uses cryptographic keys to authorise transactions. With self-custody, your recovery arrangements and operational security matter; with a custodian, access also depends on that provider. These are different responsibilities, not a universal ranking.
Before choosing: ask who signs withdrawals, how recovery works, whether assets can be frozen, and what happens if a provider fails. Never enter a recovery phrase into a research website.
Bitcoin.org vocabulary; live documentation, accessed 14 November 2026.
Circle describes USDC as backed by liquid cash and cash-equivalent reserves, with reserve attestations. That is the issuer’s description of its product. A dollar target does not remove issuer, redemption, operational or network risk.
Before using: inspect current reserve disclosures, the redemption terms that apply to you, supported networks and contract addresses. A third-party exchange price can differ from the intended peg.
Circle USDC product page; live page, accessed 14 November 2026.
Ethereum uses proof-of-stake. Participating validators can receive protocol rewards and incur penalties. Pooled or custodial routes add dependencies on contracts, operators or service providers.
Before participating: understand exit processes, provider fees, validator conduct and any additional token or smart-contract exposure. This guide makes no yield estimate.
Ethereum.org staking documentation; accessed 14 November 2026. Displayed update: 12 February 2025.