STP Due Diligence for Bitcoiners: What You Need Before You Apply
6 min read
São Tomé and Príncipe. Most Bitcoiners cannot point to it on a map, and that is fine. You are not moving there. You are acquiring citizenship in a sovereign, Non-CRS nation with a $90,000 government fee and an approximately 6-8 week processing timeline. It is the most affordable entry point into citizenship by investment, and for Bitcoiners who want a second passport without liquidating a huge chunk of their stack, STP is the practical choice.
But affordable does not mean easy. STP has a real due diligence process, and if you show up with sloppy documentation or a vague story about where your money came from, you will get delayed or denied. Let's talk about what you actually need to prepare.
Understanding The Due Diligence Mindset
Every CBI program conducts due diligence. They are granting you citizenship, and they need to verify that you are not a criminal, a sanctions target, or someone who is going to embarrass their country. STP is no different.
What STP's due diligence team wants to see is simple: you are who you say you are, your money comes from legitimate sources, and you have no criminal background that would disqualify you. The challenge for Bitcoiners is not that these requirements are unreasonable. It is that the traditional documentation trail for Bitcoin wealth does not look like the traditional documentation trail for fiat wealth.
If you sold a business for $2 million and have bank statements showing the proceeds, the source of funds story is obvious. If you bought 50 BTC in 2015 on an exchange that no longer exists and have been self-custodying ever since, the story is just as legitimate but harder to document. That is the gap you need to bridge.
Source Of Funds: The Bitcoin Documentation Challenge
This is the biggest hurdle for Bitcoiner applicants across all CBI programs, and STP is no exception. You need to demonstrate a legitimate source of wealth sufficient to cover the government fee, advisory fees, and associated costs. For STP, that means showing you have access to roughly $100,000.
Here is what works.
Exchange records: If you bought Bitcoin through a KYC exchange (Coinbase, Kraken, Bitstamp, etc.), pull your complete transaction history. Buy orders, deposits, withdrawals. The more complete the record, the better. If the exchange still exists, download everything you can. If it does not, check your email for confirmation receipts or account statements.
On-chain evidence: Blockchain transactions are public and permanent. If you can show the flow from a known exchange withdrawal address to your current holdings, that is powerful documentation. You do not need to reveal your entire UTXO set. You need to show enough to establish a credible chain of custody for the funds you are using.
Mining records: If you mined Bitcoin, documentation of your mining operation helps. Electricity bills, hardware purchases, pool payout records, wallet addresses associated with mining rewards. The earlier your mining activity, the more valuable (and the harder to document). Do your best.
OTC and peer-to-peer transactions: These are the hardest to document but not impossible. Bank statements showing fiat transfers to known OTC desks, correspondence confirming trades, even notarized statements from counterparties can help build the picture.
Tax returns: If you have declared Bitcoin gains or holdings on previous tax returns, those returns are gold for due diligence purposes. They show that a government authority has already accepted your Bitcoin wealth as legitimate.
The key principle: build a narrative that a compliance officer can follow. You do not need perfect documentation of every sat. You need enough documentation to tell a coherent, believable story about how you accumulated the wealth you are using for this application.
The Standard Document Checklist
Beyond source of funds, here is what STP requires.
Valid passport: Current, with at least 6 months validity remaining. A clear, high-quality certified copy.
Birth certificate: Apostilled or authenticated, depending on your country of origin. If it is not in English or Portuguese, get a certified translation.
Police clearance certificate: From your country of citizenship and any country where you have lived for more than 6 months in the past 10 years. This is where planning ahead matters. Some countries take weeks to issue police clearances. Start this early.
Medical certificate: A basic health check confirming you do not have any communicable diseases that would be a public health concern. Your regular doctor can handle this in most cases.
Proof of address: Utility bills, bank statements, or government correspondence showing your current residential address. Dated within the last 3 months.
Passport-sized photographs: Following ICAO standards. Get these done professionally. Rejected photos cause unnecessary delays.
CV or resume: A brief overview of your professional background. Nothing fancy. They want to understand what you do.
Bitcoin-specific Preparation Tips
Start gathering documentation now, not when you are ready to apply. The single biggest cause of delays in Bitcoiner applications is incomplete source-of-funds documentation. If you need to request records from exchanges, that can take days or weeks. If you need to trace on-chain transactions, give yourself time to do it thoroughly.
Consider working with a Bitcoin-savvy accountant or tax advisor to prepare a source-of-wealth report. This is a document that lays out your financial history, including Bitcoin acquisition, in a format that compliance teams understand. It is not required, but it makes the due diligence team's job easier, and when their job is easier, your application moves faster.
If you are planning to liquidate Bitcoin to cover the fees, think about the tax implications in your current jurisdiction before you sell. The last thing you want is a surprise tax bill on top of your CBI costs. Plan the conversion carefully.
Keep copies of everything. Every document you submit, every exchange record you pull, every on-chain trace you prepare. Store them securely. You may need them again for banking applications in your new jurisdiction.
The Cost Breakdown
Government fee: $90,000. 21 CBI advisory fee (5% on government fee): $4,500. Legal and processing costs bring the total to approximately $100,000. That is the all-in number you should plan for.
For that, you get citizenship in a sovereign nation, a passport with 58 visa-free destinations, Non-CRS status, and an approximately 6-8 week processing timeline. Per dollar spent, STP is the most efficient path to a second citizenship available to Bitcoiners today.
Final Thoughts
Due diligence is not something to fear. It is something to prepare for. The Bitcoiners who sail through CBI applications are the ones who take documentation seriously, who build a clean paper trail before they submit, and who treat the process with the same rigor they apply to securing their keys.
Your Bitcoin is legitimate. Your wealth is real. The only challenge is translating that reality into the documentation format that compliance teams need. Put in the work upfront, and STP's 6-8 week timeline holds. Show up unprepared, and you are looking at delays, requests for additional information, and frustration.
Get your documents in order. Then reach out to 21 CBI. We will walk you through the rest.

Adam Juchniewicz
CEO, 21 CBI. US Air Force veteran. Bitcoiner since 2020.