US5Y

BondsLive

Tokenized US Treasury 5-Year Note

Tokenized US Treasury 5-Year Note, fixed-income exposure with coupons reinvested to NAV.

See US5Y on /markets →Underlying ticker: US5Y

Key facts

On-chain symbol
US5Y
Underlying
US5Y
Asset class
Bonds
Custody
Held at Flo Finance
Chains
Base, Arbitrum, Ethereum
Distribution treatment
Coupon reinvested to NAV
Attestation cadence
Daily
Issuer
Flo Finance
Backing
1:1 backed by the real underlying

How US5Y resolves to US5Y

Each US5Y on-chain represents a 1:1 claim on the underlying US Treasury 5-Year Note held at an institutional custodian. The issuer and backing model are the same for every Flo token; only the underlying differs.

  1. 01

    Issuance

    Flo Finance issues US5Y as a tokenized US Treasury 5-Year Note, 1:1 backed by the real underlying.

  2. 02

    Custody

    The underlying US Treasury 5-Year Note is held at Flo Finance, an institutional custodian.

  3. 03

    Settlement

    US5Y settles on-chain on Base, Arbitrum, Ethereum. Cross-chain transfers route through Chainlink CCIP.

  4. 04

    Attestation

    Reserves are attested daily by an independent auditor and published on the Flo transparency surface.

Mint US5Y with one SDK call

Every Flo-issued token shares the same six SDK methods. Mint, redeem, supply, withdraw, borrow, repay.

POST /v1/mint

{
  "asset": "US5Y",
  "notional_usdc": "1000.00",
  "slippage_bps": 50,
  "settlement": {
    "currency": "USDC",
    "chain": "base"
  }
}

Where US5Y lives today

Flo distributes through partners. The same US5Y on-chain is the asset every partner integrates against; partner UIs may relabel it for their own brand.

Partner integrations in build

No live partner is distributing US5Y yet. Twelve integrations are in build across exchanges, wallets, fintechs, neobanks, and asset managers. Partners are listed here only after they ship.

Audits

Four independent firms, $250K bug bounty

Sherlock, Halborn, Cantina, and Cyfrin have audited the smart contracts that issue and settle US5Y. The same contracts power every Flo-issued token; one audit covers the catalogue.

Read the audit reports →

Backing

1:1 backed by the real underlying

US5Y is issued by Flo Finance and 1:1 backed by real US Treasury 5-Year Note held at institutional custodians. Reserves are attested daily and published on the Flo transparency surface.

Open the transparency page →

Risks

US5Y carries the market risk of the underlying US Treasury 5-Year Note, plus the structural risks common to every tokenized asset: custody concentration, smart-contract risk, and oracle dependency. Read the full risk disclosures on the Flo transparency surface before integrating or holding.