pathUSD

Tempo opened its public testnet on December 9, 2025, presenting stablecoin-paid fees and a built-in exchange as parts of a payment system. The production milestone followed on March 18, 2026, when mainnet opened through public RPC endpoints. These are different stages of the network, not evidence that test balances acquired dollar backing.

Current documentation identifies pathUSD as the first TIP-20 token predeployed at genesis. Mainnet uses chain ID 4217; Moderato testnet uses 42431. Both place pathUSD at 0x20c0000000000000000000000000000000000000. A matching address is therefore insufficient identification: the network determines whether a balance is the production asset or faucet test money.

On Tempo’s native exchange, each dollar token chooses a quote token against which it trades. Those relationships form a connected tree rather than requiring a market for every possible pair. pathUSD supplies one optional common connection. In Tempo’s example, liquidity in USDX/pathUSD and USDY/pathUSD lets a customer pay USDX while a merchant receives USDY in one atomic transaction.

The customer and merchant need not hold pathUSD directly in that example. It can also be the fallback fee token when a user or validator has not specified one, but other eligible stablecoins can pay fees. Tempo has no native gas token. The practical distinction is that network activity and demand to keep a pathUSD balance are different things; routing still needs usable market liquidity.

Tempo names Bridge as pathUSD’s issuer and states that high-quality dollar-denominated reserves back it 1:1. The documented entry route is a USDC.e deposit, and the exit route is redemption to USDC through Bridge. Those are the project’s issuance descriptions, distinct from the price and available liquidity on a secondary market.

Bridge’s general stablecoin FAQ describes reserve holdings and promises quarterly transparency reports. This review did not locate a pathUSD-specific reserve statement or a named custodian allocation. Bridge Building Inc’s general terms require eligible customer status for direct purchase or redemption and deny ownership of reserve assets; however, the reviewed pathUSD page does not identify the precise Bridge legal entity or customer agreement. Applying every BBI clause to pathUSD as an established contract would go beyond that evidence.

TIP-20 is implemented within Tempo’s protocol. Its specification gives assigned roles authority to issue, pause, unpause and burn balances blocked by a transfer policy. Live state on September 5, 2026 showed pathUSD unpaused, with a 100 million supply cap and custom TIP-403 policy 2. The registry identified policy 2 as a blacklist administered by 0x251d…5246; its membership and the token’s complete current role roster were not established.

pathUSD consequently connects two different systems: the exchange can route dollars automatically, while issuance and redemption rely on Bridge’s service and applicable terms. Its purpose becomes clearer when those roles are kept visible. Successful use would mean a payment reaches the recipient’s preferred token, sometimes passing through pathUSD without asking either person to keep it.