In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

In Australia, Beaufort Fiduciaries Pty Ltd (ACN 162 139 871, AFSL No. 545124) provides wholesale clients with access to derivatives where the underlying assets are digital assets. Derivatives are complex, regulated financial products that are difficult to understand and may not be suitable for inexperienced investors. For eligibility, terms and conditions click here. Krak Pay is offered by Bit Trade Australia Pty Ltd (ACN 163 237 634), Authorised Representative of Flexewallet Pty Ltd (AFSL 448066). This information is general in nature and does not take into account your personal objectives, financial situation or needs. You should consider whether it is appropriate for you and read the relevant disclosure documents before making any decision.

Sign challenge (WebSocket API)

Last updated: March 31, 2025

The subscribe and unsubscribe requests to WebSocket private feeds require a signed challenge
message with the user api_secret.

The challenge is obtained as is shown in Section WebSocket API Public (using the api_key).

Authenticated requests must include both the original challenge message (original_challenge) and the signed (signed_challenge) in JSON format.

Challenge

The challenge is a UUID string.

Example c100b894-1729-464d-ace1-52dbce11db42

The steps to sign the challenge are the same as the steps to generate an authenticated REST request
except for step 1 which now is just the challenge string:

1
Hash the challenge with the SHA-256 algorithm
2
Base64-decode your api_secret
3
Use the result of step 2 to hash the result of step 1 with the HMAC-SHA-512 algorithm
4
Base64-encode the result of step 3

The result of the step 4 is the signed challenge which will be included in the subscribe request.

The table below shows the expected output from example inputs:

challenge	c100b894-1729-464d-ace1-52dbce11db42
api_secret	7zxMEF5p/Z8l2p2U7Ghv6x14Af+Fx+92tPgUdVQ748FOIrEoT9bgT+bTRfXc5pz8na+hL/QdrCVG7bh9KpT0eMTm
signed output	4JEpF3ix66GA2B+ooK128Ift4XQVtc137N9yeg4Kqsn9PI0Kpzbysl9M1IeCEdjg0zl00wkVqcsnG4bm nlMb3A==

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