Crypto and stablecoin guide: a layer-by-layer overview

What to take away

This crypto and stablecoin guide starts with the distinction that a cryptoasset can be a native network asset, a token issued under a contract, a stablecoin, or some other arrangement recorded on a distributed ledger.

Start with who owes you what. Then look at the rail that moves it. A familiar ticker tells you almost nothing.

Six layers to map

Treating these as one thing called "blockchain" is where most confusion starts.

Native assets and issued tokens

A native asset lives in the base protocol's accounting and pays its fees. An issued token is created by a contract running on top of a network.

For either, write down the network name and chain identifier, the official asset name and symbol, and the token contract address where one exists. Add the decimal precision, the issuer or development body, and any administrative powers over the token. Note transfer restrictions, which wallets and platforms support it, and an independent source you can check it against.

For example, ETH is native to Ethereum and SOL is native to Solana. Circle issues USDC, Tether issues USDT, and Paxos issues PayPal USD (PYUSD); identify the specific network as well as the ticker because availability differs by chain.

Symbols get copied. A fraudulent token can carry a familiar name and point at a different contract entirely.

Stablecoin structure

A stablecoin tries to hold value against an anchor, usually the U.S. dollar. The mechanisms differ: off-chain reserves, crypto collateral, or algorithmic incentives. They do not create the same claim on the same entity.

For an issuer-backed payment stablecoin, trace the path end to end:

The GENIUS Act became Public Law 119-27 on July 18, 2025. The official GovInfo public-law record carries the enacted text. It sets a U.S. framework for payment stablecoins covering permitted issuers, reserves, redemption and disclosures. Implementation still depends on current regulations, agency actions and the facts on the day you use the token.

The Act requires at least one dollar of eligible reserves for each dollar of outstanding payment stablecoins. Eligible reserve categories include U.S. currency, certain bank deposits and short-term U.S. Treasury securities. The Act also uses a $10 billion outstanding-issuance threshold in its state-to-federal supervisory framework, subject to statutory conditions and transition rules.

The relevant supervisor depends on the issuer and its status; it can include the OCC, Federal Reserve, FDIC or a state regulator such as the New York State Department of Financial Services (NYDFS). Treasury and FinCEN have separate roles in federal anti-money-laundering requirements. The Act requires redemption policies, including timely redemption, but eligibility, fees and the timing available to a retail holder still depend on the issuer’s terms.

Not every dollar-linked token is a payment stablecoin under that framework. Definitions, exclusions, issuer status and timing all matter.

Reserve evidence

A reserve report gives you a date and a time, a total of outstanding tokens, and the amount and composition of the reserve. It tells you asset maturities, who custodies the assets, and how they are valued. It may disclose liabilities or encumbrances, and it names the examiner or accounting firm along with the scope of the work.

For a named example, Circle’s published USDC reserve reports have included attestations by Deloitte & Touche LLP under AICPA attestation standards. Check the actual report’s date and scope.

An attestation of selected items at one date is not a full audit of financial statements. Neither one proves the issuer can pay every holder at once.

Redemption versus market sale

Direct redemption means presenting tokens to the issuer or an authorized channel. Eligibility, minimums, fees, timing and bank settlement all apply, and they are set by the issuer's terms.

A secondary-market sale means finding a buyer on a venue. Market price can fall below the redemption target when access, confidence or banking hours get in the way. A platform showing one dollar may be showing a reference price, not a quote you can execute.

For example, Coinbase supports USDC on Ethereum. Confirm that the specific Coinbase product supports the route you intend to use, and review the fee shown for that transaction; support and charges can differ by product and network.

Custody

Self-custody

You control the signing keys. That removes one custodian from the chain, and it moves backup, device security, address checks and recovery onto you.

Third-party custody

A provider holds keys or ledger accounts and acts on your instructions. Ask about segregation, omnibus structures and sub-custodians. Ask what happens on insolvency, who can freeze a withdrawal, and how keys are managed. Get the insurance scope in writing, along with record retention and incident response.

Smart-contract custody

Assets can sit in a contract controlled by code, by governance keys, or by both. Read the upgrade and pause powers before you deposit anything.

Transfers

Before sending, confirm the asset and its contract, then the source and destination network. Check the full destination address and any memo or tag the receiving side requires. Match the amount against the token's decimals.

Then look at cost and limits: the network fee, the platform's withdrawal fee, and the minimum and maximum for the route. Read the confirmation policy, and confirm the recipient supports that exact asset on that exact network. A small test transfer first is worth the fee.

An on-chain confirmation does not prove a custodial platform credited its customer's internal account. Keep the transaction hash and the platform's case reference.

Risks by layer

A real example is the March 2023 USDC market disruption after Circle disclosed reserve exposure to Silicon Valley Bank. It illustrates why reserve assets, banking access and market price are separate layers to check.

Records

Keep the legal entity names and the terms you agreed to. Keep reserve reports, the contract address, the chain ID, and your wallet or platform account ID. Keep transaction hashes, timestamps, fees, confirmations and redemption instructions. Keep bank references and every support message.

Never store a seed phrase in the same file as the rest of this.

Common questions

Is a stablecoin a bank deposit?

Not merely because it targets one dollar. Identify the issuer, the legal claim, the reserves behind it, and which protections apply. Those answers decide whether you are a depositor, a creditor, or something else.

Does a wallet hold coins?

A wallet manages keys and displays ledger records. The asset record itself exists in the network's accounting or inside a provider's books. Losing the wallet does not delete the record, and losing the keys can still strand it.

Is an on-chain transfer reversible?

Do not assume it is. Network rules, contract powers, issuer discretion and platform policy all vary, and none of them is obligated to reverse a confirmed transfer.

Does proof of reserves prove solvency?

Not by itself. Check the liabilities side, the scope of the review, how assets were valued, who custodies them, and when the snapshot was taken. Then read the redemption terms, because that is the promise you actually hold.