By the end of this you will be able to look at any coin or token and know what KIND of thing it is in seconds, the same way a naturalist names an animal on sight.
10 steps~20 min3 nodes for your map
01 · Too many to count
Open any exchange and you will see thousands of coins, each with a chart, each promising something. It feels like you are supposed to pick winners.
You are not. People who actually live in this space never ask which coin. They ask which kind of thing they are looking at.
There are only five kinds. Learn them once, and the noise turns into a field guide.
02 · The five species
Here is the whole field guide before we walk it. Five buckets, five species. Memorize the shape of the board, not the prices.
Tap each species on the board to read its one-line trait.
0 of 5 species identified
03 · Specimen one: BTC
The first animal is the easiest, because it is alone in its bucket. A scarce, deliberately simple record of value that most people buy and then leave untouched.
Where does BTC belong?
04 · Specimen two: ETH
Next is the fuel. The platforms that apps run on charge you in their own coin every time you do anything. On Ethereum that coin is ETH. On Solana it is SOL.
You do not buy these to admire them. You hold them to pay for usage. Where does ETH go?
05 · Specimen three: USDC
The third animal does something the others refuse to do: it tries to stay still. One unit is meant to always be worth one dollar.
This is the working money of the space. Most trades and most on-chain salaries settle here, not in a coin that swings every hour. Where does USDC go?
06 · Specimen four: UNI
The fourth animal belongs to one specific application. A token tied to a single app, often giving its holders a vote on how that app is run.
UNI belongs to the Uniswap exchange. AAVE belongs to the Aave lending app. What each is actually worth depends entirely on its app, so this is the most varied bucket. Where does UNI go?
07 · Specimen five: DOGE
The last animal is the most honest about what it is. It runs on culture, community, and the casino instinct. No fuel job, no dollar peg, no app underneath.
Dogecoin literally began as a joke in 2013, a parody of crypto mania, and a real community grew around it anyway. That is the species in one story. Where does DOGE go?
08 · The cheapness trap
Now the first warning, and it catches almost everyone. A low price per coin feels like a bargain and a head start.
Your friend is excited because a coin costs a fraction of a cent. What is actually wrong with their reasoning?
09 · So memecoins are scams?
Now the honest part, because the field guide should not turn you into a cynic. Your friend swings the other way and declares the whole memecoin bucket a scam to be avoided on sight.
Where is he wrong?
10 · The guide is yours
You now hold the field guide. Five species, and a method: when a new coin appears, do not ask whether to buy it. Ask which bucket it belongs in, and judge it by the rules of that species.
Notice that two of these animals do most of their living in one place. The stablecoins and the app tokens spend their days inside the same district.
That district is DeFi: a bank with no staff behind the counter. Time to see how it can possibly work.
BANK_DBowner: the bank
you2,400
what the app is actually showing you
BANK_DBowner: the bank ✍
you2,400their pen
you hold a claim. they hold the pen.
your digital life
BANK · you2,400the bank ✍
INSTAGRAM · you2.1M followersMeta ✍
STEAM · you134 gamesValve ✍
AIRLINE · you58,200 milesthe airline ✍
four tables. zero pens that are yours.
BANK_DBowner: the bank ✍
you2,400
DENIED ✗
try both pens
PLATFORM_DBowner: the platform ✍
her · 8 years2,000,000 followers
one automated decision away
your row stands on all three
FTX_DBowner: FTX ✍
you5 BTC
the row stayed. the backing did not.
CARD_DBowner: your bank ✍
TV you never bought−1,100
fraud reversal+1,100 ✓
someone holds the pen, so someone can fix it
?_DBowner: nobody
youstill yours?
can a table exist that nobody owns?
?_DBowner: ̶n̶o̶b̶o̶d̶y̶
you100
no owner, no pen, no trust?
keeper 1
you100
keeper 2
you100
keeper 3
you100
keeper 4
you100
keeper 5
you100
no THE copy, only copies.
keeper 2
you100
keeper 3
you100
keeper 4
you100
keeper 5
you100
your copy
you100
five copies. one of them is yours.
one attacker, ten thousand faces.
writing costs watts. faking voters buys nothing.
proof of work, burn energy to vote.
rewrite one line, break every lock after it.
the price buys trustlessness. the office already has trust.