👊

I made a retirement calculator where you perpetually borrow from your bitcoin and never sell. Instructions in thread.

https://www.desmos.com/calculator/880nh6wfmi

CALCULATOR OBJECTIVE

Evaluate the viability of funding your entire retirement living expenses through a loan, using your Bitcoin holdings as collateral. The loan balance increases annually as you borrow to cover both your living expenses and the interest required to service the loan. This strategy is considered successful if the value of your Bitcoin grows at a faster rate than your loan balance, ensuring that the loan-to-value (LTV) ratio remains manageable—typically below 50%.

CALCULATOR INPUTS

Adjust the following inputs using the sliders on the left-hand side:

(R): The year you retire—assumed to be January 1st of this selected year.

(M): Your desired income in the first year of retirement (R). This amount increases annually by F.

(F): The inflation rate or the percentage by which you want your income to grow each year.

(L): The annual interest rate on the loan—the cost of servicing your debt.

(B): The amount of Bitcoin you are using as collateral for the loan.

(P): Adjusts the Bitcoin price projection. Refer to this chart* for guidance:

- Enter 0.42 to follow the red support line—a conservative price projection.

- Enter 1 to follow the green trend line—an aggressive price projection.

*https://charts.bitbo.io/long-term-power-law/

CALCULATOR GRAPH

This graph displays the results of your calculations, with the x-axis representing years and the y-axis representing USD. Each colored line represents a key financial metric over time:

Green Line – Your income growth throughout the years.

Red Line – Your loan balance as it increases annually.

Orange Line – The value of your Bitcoin collateral over time.

Blue Line – The loan-to-value (LTV) ratio, scaled for visibility. (Note: The LTV is artificially multiplied by 10⁹ for display purposes; divide by 10⁹ to obtain its actual value.)

EXAMPLE

Consider a conservative and frugal individual holding 3 bitcoins, planning to retire in 2026 with an annual living expense of $35,000. Assuming an inflation rate of 7% and a loan interest rate of 10%, the input parameters are as follows:

R = 2026 (Retirement Year)

M = 35,000 (Initial Annual Income)

F = 0.07 (Inflation Rate)

L = 0.10 (Loan Interest Rate)

B = 3 (Bitcoin Collateral)

P = 0.42 (Conservative Bitcoin Price Projection)

Now, does this strategy hold up? Based on the calculator’s results:

- The loan-to-value (LTV) ratio peaks at 47% in 2030, then decreases over time, indicating the loan remains viable.

- 30 years into retirement, the loan balance reaches approximately $13 million, while the value of the Bitcoin collateral grows to around $56 million.

According to the numbers, this approach appears feasible—provided the individual is comfortable managing a high level of debt throughout retirement.

ADVANCED

All the formulas are visible and easy to modify if you wish to.

I made a retirement calculator where you perpetually borrow from your bitcoin and never sell. Instructions in thread.

https://www.desmos.com/calculator/880nh6wfmi

CALCULATOR OBJECTIVE

Evaluate the viability of funding your entire retirement living expenses through a loan, using your Bitcoin holdings as collateral. The loan balance increases annually as you borrow to cover both your living expenses and the interest required to service the loan. This strategy is considered successful if the value of your Bitcoin grows at a faster rate than your loan balance, ensuring that the loan-to-value (LTV) ratio remains manageable—typically below 50%.

CALCULATOR INPUTS

Adjust the following inputs using the sliders on the left-hand side:

(R): The year you retire—assumed to be January 1st of this selected year.

(M): Your desired income in the first year of retirement (R). This amount increases annually by F.

(F): The inflation rate or the percentage by which you want your income to grow each year.

(L): The annual interest rate on the loan—the cost of servicing your debt.

(B): The amount of Bitcoin you are using as collateral for the loan.

(P): Adjusts the Bitcoin price projection. Refer to this chart* for guidance:

- Enter 0.42 to follow the red support line—a conservative price projection.

- Enter 1 to follow the green trend line—an aggressive price projection.

*https://charts.bitbo.io/long-term-power-law/

CALCULATOR GRAPH

This graph displays the results of your calculations, with the x-axis representing years and the y-axis representing USD. Each colored line represents a key financial metric over time:

Green Line – Your income growth throughout the years.

Red Line – Your loan balance as it increases annually.

Orange Line – The value of your Bitcoin collateral over time.

Blue Line – The loan-to-value (LTV) ratio, scaled for visibility. (Note: The LTV is artificially multiplied by 10⁹ for display purposes; divide by 10⁹ to obtain its actual value.)

EXAMPLE

Consider a conservative and frugal individual holding 3 bitcoins, planning to retire in 2026 with an annual living expense of $35,000. Assuming an inflation rate of 7% and a loan interest rate of 10%, the input parameters are as follows:

R = 2026 (Retirement Year)

M = 35,000 (Initial Annual Income)

F = 0.07 (Inflation Rate)

L = 0.10 (Loan Interest Rate)

B = 3 (Bitcoin Collateral)

P = 0.42 (Conservative Bitcoin Price Projection)

Now, does this strategy hold up? Based on the calculator’s results:

- The loan-to-value (LTV) ratio peaks at 47% in 2030, then decreases over time, indicating the loan remains viable.

- 30 years into retirement, the loan balance reaches approximately $13 million, while the value of the Bitcoin collateral grows to around $56 million.

According to the numbers, this approach appears feasible—provided the individual is comfortable managing a high level of debt throughout retirement.

ADVANCED

All the formulas are visible and easy to modify if you wish to.

I made a retirement calculator where you perpetually borrow from your bitcoin and never sell. Instructions in thread.

https://www.desmos.com/calculator/880nh6wfmi

CALCULATOR OBJECTIVE

Evaluate the viability of funding your entire retirement living expenses through a loan, using your Bitcoin holdings as collateral. The loan balance increases annually as you borrow to cover both your living expenses and the interest required to service the loan. This strategy is considered successful if the value of your Bitcoin grows at a faster rate than your loan balance, ensuring that the loan-to-value (LTV) ratio remains manageable—typically below 50%.

CALCULATOR INPUTS

Adjust the following inputs using the sliders on the left-hand side:

(R): The year you retire—assumed to be January 1st of this selected year.

(M): Your desired income in the first year of retirement (R). This amount increases annually by F.

(F): The inflation rate or the percentage by which you want your income to grow each year.

(L): The annual interest rate on the loan—the cost of servicing your debt.

(B): The amount of Bitcoin you are using as collateral for the loan.

(P): Adjusts the Bitcoin price projection. Refer to this chart* for guidance:

- Enter 0.42 to follow the red support line—a conservative price projection.

- Enter 1 to follow the green trend line—an aggressive price projection.

*https://charts.bitbo.io/long-term-power-law/

CALCULATOR GRAPH

This graph displays the results of your calculations, with the x-axis representing years and the y-axis representing USD. Each colored line represents a key financial metric over time:

Green Line – Your income growth throughout the years.

Red Line – Your loan balance as it increases annually.

Orange Line – The value of your Bitcoin collateral over time.

Blue Line – The loan-to-value (LTV) ratio, scaled for visibility. (Note: The LTV is artificially multiplied by 10⁹ for display purposes; divide by 10⁹ to obtain its actual value.)

EXAMPLE

Consider a conservative and frugal individual holding 3 bitcoins, planning to retire in 2026 with an annual living expense of $35,000. Assuming an inflation rate of 7% and a loan interest rate of 10%, the input parameters are as follows:

R = 2026 (Retirement Year)

M = 35,000 (Initial Annual Income)

F = 0.07 (Inflation Rate)

L = 0.10 (Loan Interest Rate)

B = 3 (Bitcoin Collateral)

P = 0.42 (Conservative Bitcoin Price Projection)

Now, does this strategy hold up? Based on the calculator’s results:

- The loan-to-value (LTV) ratio peaks at 47% in 2030, then decreases over time, indicating the loan remains viable.

- 30 years into retirement, the loan balance reaches approximately $13 million, while the value of the Bitcoin collateral grows to around $56 million.

According to the numbers, this approach appears feasible—provided the individual is comfortable managing a high level of debt throughout retirement.

ADVANCED

All the formulas are visible and easy to modify if you wish to.

I'll write something during the weekend... GN.

You keep on borrowing to pay the interest until enough time has passed and decide to finally sell to pay the loan balance... or never pay it. See my calculator to retire on bitcoin without ever sell:

https://www.desmos.com/calculator/880nh6wfmi

I made a retirement calculator where you perpetually borrow from your bitcoin and never sell. Note I don't endorse this technique but I made the calculator for learning purposes. If there is enough interest I'll post how to use it.

https://www.desmos.com/calculator/880nh6wfmi

I made a retirement calculator where you perpetually borrow from your bitcoin and never sell. Note I don't endorse this technique but I made the calculator for learning purposes. If there is enough interest I'll post how to use it.

https://www.desmos.com/calculator/880nh6wfmi

I stopped using the app because I couldn’t listen to my downloaded podcasts in the car through Google Auto. This was frustrating because the podcasts were already downloaded, and having a data plan should not be necessary for playing offline content.

They don't do anymore my pair... it was good when they did though.

😂

Happy birthday... have learned so much from you.

Ready for a more demanding league?

Max energy the moment they see you.

I want to share my experience getting my Bitcoin node up and running so others can do it too. Note I'm not an expert in computers but I was able to learn many things along the way and get the job done.

At first, I was looking to buy a Raspberry Pi but I could not find one at a reasonable price so I decided to buy a used mini pc instead: any Dell Optiplex, HP EliteDesk or Lenovo ThinkCentre to be exact.

At the end this is what I bought:

1. Lenovo ThinkCentre M715q with 8GB RAM with a tiny hard drive.

2. Timetec 2.5" SATA SSD of 2TB of capacity.

3. Fueran DP display emulator plug.

I also needed temporary the following which I already had:

A. Another computer

B. Monitor

C. Keyboard

D. Mouse

E. Empty USB stick

In addition to this I used the following free software:

a. Latest LTS version of Ubuntu Desktop

b. balenaEtcher

c. Umbrel

And this was the whole process:

i. Replace the tiny hard drive in [1] with [2].

○ Instructions from the Lenovo page: https://download.lenovo.com/pccbbs/pubs/m715q_2gen/en/index.html

ii. Install [a] on [1].

○ Instructions from the Ubuntu page: https://ubuntu.com/tutorials/install-ubuntu-desktop#3-create-a-bootable-usb-stick

○ For the first steps you will need [A], [a], [b] and [E].

○ For the follow on steps you will need [1] and [B] through [E].

○ Do not skip the update step.

iii. Familiarize yourself with Ubuntu.

○ Navigation: How to Use Ubuntu (Beginners Guide)

○ Terminal: How to open terminal in Linux Ubuntu

○ Ubuntu help: https://help.ubuntu.com/stable/ubuntu-help/

iv. Install [c] on [a].

○ Open the Terminal in Ubuntu and run:

§ curl -L https://umbrel.sh | bash

○ If you get an error you need to install curl first with these commands in the Terminal:

§ sudo apt update

§ sudo apt install curl

○ Instructions taken from the Umbrel page: https://umbrel.com/#start

v. Take note of the urls (http addresses) Umbrel gives you at the end of [iv]

○ Addresses are right after the message "Umbrel is now accessible at" in the Terminal.

○ You can access Umbrel from [1] or any other computer connected to your local network... just use a browser to go to either url in [v].

Up to this point the only thing left to do was to install the Bitcoin Node app from within Umbrel. However, I would like to share few more steps I took to tidy up the setup.

Remote desktop into [1] so [B] through [D] are not needed anymore:

i. In Ubuntu go to Settings > Sharing and turn on Remote Desktop.

○ Turn on as well Remote Control.

○ Set a User Name and Password.

ii. Remote desktop into [1] from a Windows computer connected to your local network.

○ From the Windows computer open the Remote Desktop Connection app.

○ Change the User Name to [i] and click Connect.

○ Enter the Password per [i] and click Ok.

iii. If successful, reboot [1] and try [ii] again.

iv. If this time fails because Ubuntu is changing the Password in [i], do this:

○ In Ubuntu, create a new keyring called myKEYRING in the "Passwords and Keys" app with no password.

○ Set myKEYRING as the default keyring.

○ Delete the Remote Desktop password from the "Login" keyring.

○ Reboot [1] to ensure that the myKEYRING is the default one.

○ Re-enter the Remote Desktop password per [i] to save it to myKEYRING.

○ Go back to the "Passwords and Keys" app and set the "Login" keyring to default again.

○ Reboot [1].

v. Allow Remote Desktop to work with the locked screen

○ In Ubuntu, install the gnome-shell-extension-manager with this command:

§ sudo apt install gnome-shell-extension-manager

○ Open the newly installed app called "Extension Manager".

○ Within this app, search for and install the "Allow Locked Remote Desktop" GNOME Shell extension.

vi. Turn off [1].

vii. Disconnect [B] through [D] from [1].

viii. Connect [3].

ix. Place [1] in its final place, you can now control it from your Windows machine.

Setup the Bitcoin node

i. Familiarize yourself with Umbrel and the Bitcoin node.

○ These videos are the best... just ignore the Raspberry Pi sections and perhaps the Lighting sections.

○ Umbrel: How To Run A Bitcoin Node - Parts, Assembly and Software Installation

○ UMBREL - How To Use Your Bitcoin and Lightning Node (NEW)

ii. Access Umbrel with either of the urls captured in [v] above and set your user and password.

iii. Install the Bitcoin Node app and let it download the entire blockchain.

iv. Be patient as this can take few days.

v. Once the blockchain in 100% synced share the blockchain with others:

○ Within the Bitcoin Node app go to Advanced Settings.

○ Turn on "Incoming Connections".

○ Click on "Save and Restart Bitcoin Node"

I also installed the below two additional apps within Umbrel:

• Electrs: required to connect my Trezor hardware wallet to the Bitcoin node.

• mempool: to explore the blockchain anonymously using the Bitcoin node.

And I assigned a static IP address to [1] from my home router. This is not a must but it is highly recommended so the url to connect to Umbrel never changes.

• Instructions how to do it in an ASUS router: Guide for manually assigning IP addresses for an Asus Router

This got me up and running with my node. However, this is not the end as the node also requires some maintenance.

To maintain the node I follow these steps once per quarter:

i. Remote desktop into [1], open the Terminal and use the following commands:

○ To stop Umbrel:

§ cd umbrel

§ sudo ./scripts/stop

○ To update Ubuntu OS:

§ sudo apt update

§ sudo apt upgrade

○ To restart [1]:

§ sudo reboot

ii. Remote desktop into [1], open the Terminal and use the following commands:

○ To start Umbrel

§ cd umbrel

§ sudo ./scripts/start

iii. Access Umbrel, go to Settings and install the new Umbrel version if available.

That's it. I hope this is useful to help some of you in setting up your own Bitcoin node. If you want to send me some love you can zap me here in Nostr.

Bitcoin untouched by the debt spiral.

Bitcoin surfing the FIAT wave.

Bitcoin surfing the FIAT wave.

I had chicken tonight as well... enjoy!

What's the advantage of running your own umbrel relay?

My first image ever uploaded to Nostr 😅👆... I like this chart turn the root.