Match the question to the record
These are possible evidence roles, not a universal document list. Use the casino's actual request to decide which records are needed.
Follow the deposit backwards
Begin with the casino deposit amount, asset, network and date. Find the outgoing entry that funded it. If the crypto first came from an exchange, connect that withdrawal to the purchase or conversion there, then to the money used for the purchase.
A self-hosted wallet adds a transfer step; it does not create a named account statement. An exchange may provide both transaction history and an account-holder record. Keep their jobs separate: one records the movement, the other can help establish whose account was involved.
Write a short explanation of each handoff. Include fees and conversions where they account for a difference. If you cannot substantiate a step, identify the missing record and ask what alternative the reviewer accepts. Do not describe an unsupported link as confirmed.
Check the requested format before uploading
A clear screenshot can still be the wrong format. Stake's source-of-income help, for example, requires an original photograph or PDF and says screenshots are not accepted. That is a condition of that particular review, not a rule you can assume for every casino.
Read the request for document type, date range, holder details and whether the entire document must be visible. Do not crop an original to make it prettier or hide a field the reviewer needs. If it contains unrelated sensitive information, ask which redactions are permitted before altering the submission copy. Keep the original securely.
If the same request comes back again
Reply against the previous submission reference. State which record covers each requested step, then ask which link, field or format remains unsatisfied. A response that says only 'source of funds required' does not tell you whether the problem is origin, account ownership or the transfer trail.
If support gives a rejection reason, correct that reason rather than sending the same packet again. If it will not identify the missing information or provide a review outcome, preserve the repeated requests and replies for a documented complaint. Keep the requested correction specific: review the identified documents and explain the remaining requirement.