Is this Guardian token backed?
Guardian writes the consensus timestamp of a signed Verifiable Presentation into every mint. This follows it on the public mirror node, reads the VP from IPFS with each block checked against its CID, verifies the signatures, and checks that the VC names this token and amount and was signed by the identity the token treasury published. No Guardian login, no indexer account. Agents call it as trace_guardian_mint.
Buy a Guardian token, checked first
UsdCheckout sells any HTS token at a USD price and pays the seller through SaucerSwap. Before it builds a purchase, the server traces the listed token: a token that cites a Guardian record that does not check out gets no transaction. Sign with your own wallet (MetaMask with an ECDSA testnet account), and associate with the token first. Agents call list_checkout_listings and prepare_checkout_purchase.
Compare a Guardian figure
Managed Guardian already calculates the tonnes and can mint that number. This runs the same inputs through the integer the contract uses. If the two disagree, do not sell the credit. This check does not mint.