If you are new to Bitcoin, the hardest part is knowing where to start. Search engines give you millions of results. Most of them are noise. Proof of Resources is a curated list of Bitcoin links. Each one was picked because it helps you understand something specific. Wallets, security, how transactions work, how the network stays secure. No scrolling through spam. Just a clear starting point.

Proof of Resources

A curated collection of valuable Bitcoin resources, tools, and analytics. Independently selected with no commercial incentives.

Bitcoin has a history worth understanding. Every four years, the number of new Bitcoin created per block gets cut in half. This is called a halving. It has happened four times so far, in 2012, 2016, 2020, and 2024. The last Bitcoin will be mined around the year 2140. After that, no new Bitcoin enters circulation. The supply reaches its final limit of 21 million. mmcxl.org lays this out as a visual timeline. You can see the key events, the halvings, and the math behind why 2140 is the end date. If you want to understand where Bitcoin has been and where it is going, this puts it in one place. #bitcoin #btc

btcsite.org shows two numbers side by side, updating live: the Bitcoin price and the US national debt. Bitcoin's supply grows on a fixed schedule that gets smaller every four years. The debt grows on no schedule at all. Seeing both tickers move in real time makes the difference easy to understand at a glance.

Tax season does not care whether you hold Bitcoin. If you sold Bitcoin for a profit, you owe capital gains tax. If you earned Bitcoin as income, that is taxed too. Figuring out what you owe means tracking purchase prices, sale prices, and holding periods. Kai Tax Calc is an iOS app that handles this. You enter your income and Bitcoin gains. It calculates what you owe. It costs $2.99. No subscription. No account required. App Store:

App Store

Kai Tax Calc App - App Store

Download Kai Tax Calc by Nordic Tug LLC on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Kai Tax Calc.

#bitcoin #btc

Bitcoin Daily Briefing - June 29 Strategy (formerly MicroStrategy) authorized $2B in buybacks and started a Bitcoin monetization program. Saylor's firm can now sell portions of its BTC if needed. Bitcoin trades around $60,000. Galaxy Research cut the odds of the CLARITY Act passing the Senate to 50-50. The bill would set clearer rules for digital asset regulation in the US. Time is short before recess. The EU's crypto licensing deadline has arrived. Firms operating without approval now face enforcement. Some unlicensed services are expected to close. Network update: Bitcoin transaction fees are very low right now. A fast transfer costs a fraction of a cent. No congestion on the network.

Estate taxes affect more people than you might think. Under current US law for 2026, estates above a certain threshold owe federal tax. If your assets, including Bitcoin, push you over that line, the tax bill can be significant. Estate Estimator is an iOS app that calculates your potential estate tax under 2026 rules. You enter your assets and it shows the tax exposure. For Bitcoin holders, this matters. Self-custodied Bitcoin is part of your estate. Planning ahead means your family keeps what you built instead of losing a chunk to taxes. App Store:

App Store

Estate Estimator App - App Store

Download Estate Estimator by Nordic Tug LLC on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Estate Estimator.

#bitcoin #btc

If you hold Bitcoin, you have probably thought about retirement. How much do you need? When can you stop working? Most calculators only look at traditional savings. They ignore Bitcoin entirely. Sats on Fire is an iOS app that combines Bitcoin stacking with a 401(k) into one retirement planner. You can model different scenarios: what if Bitcoin keeps appreciating? What if you add more each month? How does that change your timeline? It is a FIRE calculator. FIRE stands for Financial Independence, Retire Early. The idea is to figure out how much you need so work becomes optional. If you are stacking sats and contributing to a retirement account, this puts both in one view.

App Store

Sats on Fire App - App Store

Download Sats on Fire by Nordic Tug LLC on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Sats on Fire.

Bitcoin has a history. It did not just appear overnight. The first block was mined in 2009. The supply gets cut in half roughly every four years. The last Bitcoin will be mined around the year 2140. mmcxl.org puts this timeline in one place. You can see the key events, understand why the supply schedule matters, and learn how halvings work without digging through Wikipedia rabbit holes. If you want to understand where Bitcoin came from and where it is going, this is a good starting point.

MMCXL

MMCXL — 2140 is the year the last Bitcoin will be mined.

A clean hub for Bitcoin

#bitcoin #btc

Learning about Bitcoin can feel overwhelming. There are thousands of websites, videos, and guides. Which ones are worth your time? proofofresources.com is a curated hub of Bitcoin resources. Over 27 links, hand-picked and organized by topic. Whether you are trying to understand wallets, mining, or the basics of how Bitcoin works, this gives you a starting point without drowning in search results. Start with one link. Read at your own pace.

Proof of Resources

A curated collection of valuable Bitcoin resources, tools, and analytics. Independently selected with no commercial incentives.

#bitcoin #btc

Most price sites show you one number. The price of Bitcoin right now. But price alone does not tell the whole story. How does it compare to the US national debt, which grows every second whether anyone is watching or not? btcsite.org puts both side by side. Live Bitcoin price. Live national debt ticker. One page, two numbers that matter. The debt clock never stops. Bitcoin's supply is fixed. Seeing them next to each other makes the contrast feel real.

Bitcoin + US Debt Ticker - Live BTC Price & National Debt

Real-time Bitcoin price and US national debt tracker. Monitor BTC value and America

#bitcoin #btc

Tracking Bitcoin's price is easy. Understanding how it compares to other assets over time is harder. Bitcoin Performance is an iOS app that shows Bitcoin's performance alongside stock market benchmarks and inflation. You can see how Bitcoin has done versus the S&P 500 or against the declining value of the dollar over the same period. If you want context and not just a price ticker, this puts the numbers side by side in one place. App Store:

App Store

Bitcoin Performance App - App Store

Download Bitcoin Performance by Nordic Tug LLC on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Bitcoin Perfor...

#bitcoin #btc

Planning for retirement with Bitcoin raises questions most calculators do not answer. How does your Bitcoin savings fit with your traditional retirement account? When could you realistically reach financial independence if you hold both? Sats on Fire is an iOS app that models your path to financial independence using both your Bitcoin holdings and your 401(k) balance. You enter your numbers, and it projects a timeline for reaching financial independence. For anyone stacking Bitcoin alongside a day job and a retirement plan, this fills a gap most tools ignore. App Store:

App Store

Sats on Fire App - App Store

Download Sats on Fire by Nordic Tug LLC on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Sats on Fire.

#bitcoin #btc

Bitcoin does not have a CEO or a marketing team. It has a history. And that history is still being written. mmcxl.org walks you through Bitcoin's timeline, from its launch in 2009 to the halving cycle that controls how new Bitcoin is created. It also explains why the year 2140 matters. That is when the last fraction of a Bitcoin is expected to be issued. If you have heard the word "halving" and never understood what it means, this is a clear place to start. #bitcoin #btc

Most people watch the Bitcoin price. Far fewer watch what governments owe. btcsite.org puts two numbers on one screen: the live Bitcoin price and the US national debt ticker. Side by side, updating in real time. The point is not to alarm anyone. It is to show context. Bitcoin has a fixed supply. National debt does not. That difference matters when you think about what holds value over decades. Simple to use. No login, no setup. Just open the page and watch two numbers move. #bitcoin #btc