Published: 2026-06-13
Frequently Asked Questions
FXProof provides signed proof documents and reusable proof bundles for official exchange-rate evidence workflows. Official institutions publish the underlying reference rates; FXProof keeps the proof document, source attribution, selected date, document id, payload hash, and verification path together.
Product and getting started
I need proof for an exchange rate I used. Where do I start?
Choose the official source and date used in your business record. The supported sources catalog shows the current source options, and the exchange-rate proof guide explains the document you receive. For a past date, also check the historical proof guide because bundle availability depends on the concrete dataset and date.
What does FXProof provide?
FXProof provides signed proof documents, ready proof bundles, source attribution, payload-hash verification, and an evidence workflow for official exchange-rate data.
Are official rates the FXProof product?
No. Official institutions remain the source of the reference-rate data. FXProof sells the proof and evidence workflow around that data, not the public rates themselves.
What is a dataset?
A dataset is the stable FXProof identifier for one official source, product, and publication rhythm. Web and API searches use the same dataset meaning, so a selected date points to the same proof-bundle scope in both workflows.
Where can I see currently supported sources?
Use the supported sources catalog. The catalog reflects the sources currently published by FXProof instead of a static list in this FAQ.
Proof bundles and files
Do I need to save anything besides the Signed FXProof Proof PDF?
No additional FXProof verification data needs to be stored separately. The Signed FXProof Proof PDF contains its source and rate context, document id, payload hash, digital signature, and verification information. Keep the PDF with the business record it supports. Optional bundle files can provide extra source context, but they are not required to verify the signed proof PDF. See the signed proof PDF guide for details.
What is a ready proof bundle?
A ready proof bundle is a reusable set of available evidence files for one dataset and reference date. You can search for available dates first, then explicitly open a ready bundle when you decide to use it.
Which PDF types can a bundle contain?
A bundle can contain a Signed FXProof Proof PDF, a Screenshot of Source Page PDF, and an Original Source PDF when the official source provides one. The bundle manifest shows which files are available for that date and dataset.
Does searching for a date use proof quota?
No. Availability search is separate from opening a bundle. Searching can show whether a proof bundle exists for the selected date or whether nearby dates are available.
What uses one proof quota unit?
A new explicit opening of a ready proof bundle uses one proof quota unit. FXProof does not spend proof quota just because you viewed rates or searched availability.
Does reopening or downloading again use more quota?
No. Reopening a bundle already opened for your account and downloading its files again do not spend proof quota a second time.
What happens when the selected date has no ready bundle?
FXProof separates the proof bundle from reference rates. If a selected date has no ready bundle, the account page can point you to nearby dates where a bundle is ready, or explain that current or archived generation is still in progress.
Search, archive, and quotas
What is the difference between archive access and file retention?
Archive access is a plan limit that controls how far back you can search or open old bundles. File retention is the legal and operational period for keeping proof artifacts and related records. They are not the same thing.
What does parallel streams limit?
Parallel streams limit simultaneous Web and API rate lookups and simultaneous Web and API proof PDF downloads. It is a throughput limit, not a source-catalog restriction.
Do plans restrict active sources?
No. Active sources are not limited by plan. Plans limit quotas, archive depth, and throughput for one FXProof account.
How are current prices and limits determined?
The pricing page shows the current plans, prices, billing options, quotas, archive windows, and throughput limits from the FXProof product catalog.
Verification
How does public PDF verification work?
Use Verify PDF with the document id and payload hash shown in a supported FXProof proof PDF. FXProof checks whether the submitted values match recorded verification metadata.
Is the payload hash a byte hash of the signed PDF?
No. The payload hash binds the proof payload and recorded metadata. It is not presented as a byte-for-byte hash of the final signed PDF file.
Does verification guarantee acceptance by a recipient?
No. Verification helps show that a supported FXProof proof PDF matches recorded metadata. A tax authority, auditor, customer, or other recipient may still apply its own acceptance rules.
Plans and billing
Does a plan include seats or a shared workspace?
No. Current plans apply to one FXProof account. Multi-user seats, workspaces, member roles, and shared team quotas are not part of the current MVP.
What happens if I reach a quota?
Quota-controlled operations can be blocked until the quota resets or the account moves to a plan with enough capacity. Searching availability and reopening already opened bundles follow the separate rules described above.
Who handles checkout and receipts?
For Paddle-processed orders, Paddle handles checkout, payment processing, receipts, tax or VAT, and some billing communications. FXProof provides and supports the proof service.
Optional API automation
How do I get an API token?
Create or sign in to your FXProof account, then use the account API token flow. Keep tokens private and do not send them in support requests.
Why must an API client start with /api/v1/rates/catalog?
The catalog is the discovery source for valid datasets. Starting there avoids guessing source, product, or periodicity combinations and keeps API automation aligned with the Web workflow.
Where are the API details?
Read the API documentation for dataset discovery, reference-rate lookup, proof bundle operations, downloads, account quota status, and PDF verification.
Support and limitations
What should I include in a support request?
Include the official source, dataset or date, document id, payload hash, and the page or API operation involved when they are relevant. Do not send passwords, API tokens, or payment-card data.
Does FXProof provide legal, tax, accounting, investment, trading, payment, transfer, or FX conversion services?
No. FXProof provides proof documents, proof bundles, verification metadata, and optional API automation. It does not provide legal, tax, accounting, investment, trading, payment, money-transfer, or FX conversion services.
What can affect proof availability?
Proof availability can depend on the official source, publication timing, selected date, bundle readiness, archive access, and source availability. FXProof does not control when an official institution publishes or changes its source material.