v35.0.0

Changelog

2026-10-13

Breaking Change

Trading is now generally available

Products: Trading

Scope: API + SDKs

• What's new
  The Trading endpoints are no longer marked as beta and are now part of the general API surface.

• Impact
  Trading endpoints are grouped under Trading instead of Trading (Beta), which changes the generated SDK class used to call them.

Affected endpoints:

1. Get all offers
2. Create an order
3. Get orders
4. Get order details
5. Get order requirement details for an order
6. Submit a response to an order requirement
7. Upload a file for an order requirement
8. Get providers
9. Get trading provider by ID
10. Create a quote
11. Get rates

Canton calls take the wallet at the top level

Products: Canton (Beta)

Scope: API + SDKs

• What's new
  Canton call requests now carry vaultAccountId and blockchainId beside the call type instead of inside payload, and payload itself is now optional on participant onboarding calls.

• Impact
  Canton call requests that still nest the wallet fields inside payload are now rejected.

Affected endpoints:

1. Make a Canton call

Withdraw an allocation by answering the offer

Products: Canton (Beta)

Scope: API + SDKs

• What's new
  Withdrawing a Canton allocation is now sent as a third answer to the allocation offer, alongside accept and reject, instead of as a separate Canton call.

• Impact
  Existing integrations that withdraw a Canton allocation stop working until they send the withdrawal against the original offer.

Affected endpoints:

1. Answer an offer
2. Make a Canton call

Added

Identify Canton offer responses in transactions

Products: Transactions

Scope: API + SDKs

• What's new
  Canton transaction details now report responseType on every offer response, plus allocationTransactionId on an allocation withdrawal so it names the accept it released.

• Impact
  A Canton response transaction read on its own now states which answer it carried; this is a non-breaking addition, so existing integrations keep working unchanged.

Affected endpoints:

1. Get a specific transaction by external transaction ID
2. Get a specific transaction by Fireblocks transaction ID
3. Get transaction history

Add bulk signing key registration

Products: Key Link (Beta)

Scope: API + SDKs

• What's new
  Adds the ability to register many Key Link signing keys in a single request and track the registration job until it completes.

• Impact
  Customers can onboard large sets of signing keys in one request instead of registering each key individually.

Affected endpoints:

1. Register signing keys in bulk
2. Get bulk registration jobs
3. Get a bulk registration job

---