Tool · reflection

Goal compass

Goal first, strategy second. Ten honest questions help you sort out your situation. The result is a profile with pointers and matching deep dives on the learning path – the path itself is the same for everyone.

In the learning pathStage 3 · Plan

Runs
locally, in your browser
Inputs
stay on your device
Price
$86,292 BTC/USD
Advice
none – education, not recommendations

A thinking aid, not investment advice: the compass recommends neither providers nor amounts or shares. It helps you sort out your situation – and shows what to read next.

0 of 10 questions answered
01 What do you want bitcoin for?

Choose what matters most to you.

02 When might you need this money at the earliest?
03 Do you have an emergency fund of three to six months’ expenses that you can access at any time?
04 Do you have expensive debt, such as an overdraft, credit card debt or a consumer loan?
05 Imagine: in the year after you buy, the price falls by 80% – $1,000 becomes $200. Only after about three years are you back in profit. What do you do?

History so far: since 2013, the price has fallen by more than 70% four times, most recently in 2021–2022. At last count it was 31% below its high of 6 October 2025.

06 What would losing the entire amount you want to put in mean for you?
07 Could you explain to someone in your own words what bitcoin is, why its supply is limited – and what critics say?
08 Where should your bitcoin be kept?
09 Have you ever sold out of fear or bought out of fear of missing out – with shares, crypto or anything else?
10 Why are you looking into this right now?

Your profile

Answer all ten questions and your profile appears here.

Your result is stored only in this browser (localStorage) and never transmitted. You can delete it at any time.

Open calculation

How we calculate

Assumptions, formulas and limits – click to expand

What the compass does – and doesn’t

The compass evaluates your answers with simple, open rules across seven areas: foundation, time horizon, volatility and loss, knowledge, custody, behaviour and trigger. It names no provider, no amount and no percentage – on purpose: a personal recommendation would be investment advice, which a questionnaire cannot provide because it does not know your full financial situation.[4]

The rules behind the evaluation

  • Foundation: an immediately available reserve comes before any investment – BaFin mentions about three months’ income, other guides three to six months’ expenses.[1],[2] Expensive debt goes first.
  • Time horizon: the basis is daily closing prices in US dollars since 2013; every day counts as a possible purchase date. One year after buying, you were below water in 31% of cases (at worst by 83%), after two years in 19%. After five years you were in profit in 99.7% of cases. Anyone who bought at the peak waited up to 3.2 years to get back to their purchase price. Money you need within two years therefore doesn’t belong in bitcoin.[3]
  • Volatility: since 2013, the price has fallen by more than 70% from its high four times, by up to 85%. The scenario in question 5 (80%) matches a typical one of these crashes. If you couldn’t bear such a crash financially, reduce the amount.[3]
  • Trigger: platform recommendations via chats, calls or online acquaintances are a typical pattern of investment fraud.[5]

Your browser recalculates these figures from the price history and the current price when you open the page. If our server can’t be reached, it uses the bundled data (prices up to 4 October 2026). They describe the past – they are not a forecast.

Your data

The evaluation runs entirely in your browser. Your result is stored locally (localStorage) so you can come back to it; nothing is transmitted. “Delete result” removes it immediately.

Sources5 sources · 4 publishers

The superscript numbers in the text refer to these sources.

  1. Das Einmaleins der Geldanlage – BaFin (accessed 27/09/2026)
  2. Notgroschen: Wie viel Rücklage brauchst du? – Finanzfluss, 09.03.2026 (accessed 27/09/2026)
  3. BTC/USD-Tagesschlusskurse (OHLC-Daten, Grundlage unserer eigenen Berechnung) – Bitstamp (accessed 28/09/2026)
  4. Fünf Punkte, auf die Finfluencer achten sollten – BaFin, 19.08.2026 (accessed 27/09/2026)
  5. Factsheet: Krypto-Betrug und -Täuschung (deutsche Fassung) – EBA, EIOPA und ESMA, 2026 (accessed 27/09/2026)

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Pre-launch

We’re still building – block by block.

Blockchain21 is already open, and you’re welcome to look around. We haven’t officially launched yet, though: some details are still missing, may change or don’t quite fit together yet.

Not finished yet

  • Email Messages to support@blockchain21.net don’t arrive yet. Until then, you can reach us by post – the address is in the legal notice.
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  • Reader account Coming later. Until then, your browser keeps your progress.
  • Partners No partnership is active yet – providers are listed without ads.
  • Info pages The privacy policy, transparency page and “About us” still lack some details.

Already in place: learning path, articles, glossary, calculators and live data.

Block 0 · Genesis — Bitcoin, too, began with block 0 As of 5 October 2026