Coinbase Source of Funds: How to Properly Submit Proof of Source (Attorney)

Coinbase Asks About the Source of Funds: What Matters Now

In practice, many submissions fail not because “there is nothing at all,” but because of typical problems:

• The documents are unsorted (no chronological order, no index)
• Amounts/time periods do not match (discrepancies between bank/exchange/wallet)
• Screenshots cannot be matched (account holder not identifiable)
• There is a lack of explanatory notes (explaining why a transfer took place, e.g., wallet change, consolidation)

Our goal is to submit an application that Coinbase can review quickly.

Documents That Are Often Useful

Depending on the situation, we typically combine the following:

1) Coinbase-related data

• Deposit/Withdrawal Summaries
• Transaction/Trading Histories (if applicable)
• Screenshots/exports as a supplement when official reports are unavailable

2) Bank documents (Fiat)

• Transfer receipts/bank statements for deposits (where fiat was transferred to the crypto sector)
• Payout flows back to the bank account (if applicable)

3) On-chain records

• TXIDs, wallet addresses, timestamps
• Timeline of the transfers leading to the disputed deposit/withdrawal

4) Special Cases

• Loans/Private Transactions: Brief Documentation + Cash Flow
• Mining/Staking: transparent reports/historical data (if available)

Our Service: From a “Pile of Data” to a Verifiable Package

We typically create:

• Brief Chronology (clear, concise, without technical jargon)
• Document Index (Appendix A1, A2, …) Using File Name Logic
• Consistency Check (Amounts/Time Periods/Wallets/Platforms)
• Response to Coinbase (objective, comprehensive, without unnecessarily undermining oneself)
• Handling Inquiries: Follow up precisely; don't start from scratch every time

Tax Law: Thinking Ahead

Reporting the source of funds may involve tax-sensitive issues (e.g., documentation of purchases/sales, allocation of wallets and platforms, traceability of transaction history). We take care to ensure that:

• so that the presentation remains consistent,
• so that no unnecessary claims arise,
• and that tax-related processing takes place where it makes sense (and not only after inquiries have escalated).

Here's how we get started

Please send us:

• the Coinbase message (including deadlines and upload instructions),
• a list of the affected assets/time periods,
• Existing reports/documents (including incomplete ones).

We’ll then provide you with a clear “to-do” list (what’s sufficient, what’s missing, what can be replaced) and, if you’d like, handle the entire preparation process for you.

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