FAQ — “Every micro-π has its own ID, so you can tell them apart?”

The claim

“Every unit (micro-π) has a unique identifier, and through it you can trace units and tell mined Pi apart from exchange Pi.”

Pi Network (built on Stellar) does not use a UTXO model. It uses an Account / Balance model:

Model	How it stores value	Example
UTXO (Bitcoin)	A list of “unspent outputs”, each with a `txid:vout` id	quasi-ID per piece
Account/Balance (Stellar/Pi)	A single numeric balance per (account + asset)	one number, no pieces

// GET https://api.mainnet.minepi.com/accounts/GC55...
{
  "balance": "2.0000000",
  "asset_type": "native"
}

👉 The balance is "2.0000000" — a single number. There is no array of pieces, no per-unit ID, and no txid for each π.

Run examples/coin-id-check.mjs to see it for yourself.

1 π = 10,000,000 micro-π.
That’s mathematical division — like saying “1 dollar = 100 cents”. A cent has no unique ID.
The balance is stored as a scaled integer inside the contract; there is no field per decimal place.

Identifier	Form	Identifies
Account ID	`G...`	an account — not a coin
Muxed Account ID	`M...`	a user inside a pooled account — not a coin
Contract ID	`C...`	a smart contract
Transaction Hash	`txid`	a transaction
Operation ID	number	an operation
Claimable Balance ID	`0000...`	a locked balance container — not a coin
Ledger Sequence	number	a ledger (block)

⚠️ None of them is “a π unit ID”.

People merge three completely different things:

Coin ID — exists only in a UTXO model. ← Not present in Pi.
Account ID (G/M) — tells you who, not where the coin came from.
Transaction ID (txid) — tells you which operation, not the origin of the units.

In Bitcoin (a UTXO model) each output has a txid:vout — yet chain analysis is probabilistic and limited, because outputs get merged and split.
In Pi (a balance model) the concept doesn’t exist at all: the moment you receive π, the amount merges into your balance as one number. There is no way to track “which π” you sent.

✅ True: every account has an ID (G), and every transaction has an ID (txid).
❌ False: every micro-π unit has an ID. No such thing exists.
Result: fungibility holds — a single native asset, with no origin and no tag.