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  • How-to guides

    Stablecoins Explained: USDC, USDT & the Dollar On-Chain

    Short answer: a stablecoin is a crypto token engineered to stay at a fixed value - usually 1 coin = 1 US dollar . USDC and USDT are the big two. For paying, the appeal is simple: the amount doesn’t move while you check out. General information, not financial advice.

    Bitcoin and ETH are volatile - great for some purposes, awkward when a price needs to hold still for two minutes. Stablecoins were built to solve exactly that: the speed and reach of crypto, with the steadiness of the dollar.

    How the peg works

    The common model is reserve-backed: a company issues tokens and holds reserves (cash and short-term instruments) so each token can be redeemed for a dollar. That backing is what keeps the market price hugging $1. Different issuers publish different levels of reserve detail - worth knowing, though for a one-off payment it rarely matters.

    USDC vs USDT

  • USDC - issued by Circle; widely used, regular reserve attestations.
  • USDT (Tether) - the largest by volume; very widely accepted.
  • Both aim for the same 1:1 dollar peg. Crucially, each exists on several networks - USDC and USDT on Ethereum, on Solana, and more. The token is “the same dollar,” but the network it travels on differs.

    Match the network exactly. “USDC” on Ethereum and “USDC” on Solana are not interchangeable in transit. Send on the network the invoice specifies, or funds can be stuck. When in doubt, Solana-network stablecoins are usually the fastest and cheapest.

    Why they suit paying for an order

  • No price drift: $100 of USDC is $100 when it arrives - no surprise under/overpayment from volatility.
  • Fast & cheap on the right rail: a stablecoin on Solana settles in about a second for a fraction of a cent.
  • Simple mental model: you’re effectively paying in dollars, just on-chain.
  • Ready to use one? Follow How to pay with crypto and pick a stablecoin at checkout.

    Frequently Asked Questions

    What is a stablecoin? A token designed to hold a steady value, usually 1:1 with the US dollar, backed by reserves. USDC/USDT are the common ones.

    Why pay with a stablecoin? The amount doesn’t move while you check out - no volatility between invoice and confirmation.

    USDC vs USDT? Both target a $1 peg, different issuers/disclosures, both on multiple networks. Match the invoice network.

    Related Reading

  • How to pay with crypto
  • What is Solana? The fast payment rail
  • Crypto wallets & seed phrases
  • Back to the Crypto Blog
  • Primary sources & further reading

  • USDC - circle.com/usdc
  • USDT - tether.to
  • Ethereum - ethereum.org: stablecoins
  • External links are for reference only; New-U is not affiliated with these projects and links carry no endorsement or financial advice.

    From the Lab - Peptides on LinkedIn & Facebook

    Pay in dollars, on-chain

    USDC and USDT are accepted at checkout alongside BTC, ETH and SOL. Research use only - not for human consumption.

    Premium research peptides at >99% HPLC-verified purity, third-party tested by Janoshik Analytical with a Certificate of Analysis on every lot. Shipped lab-direct, discreet and cold-chain, worldwide. For laboratory research use only.

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