> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spark.money/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

Quick definitions.

## BTKN

Bitcoin Token. The token protocol on Spark. Fast, cheap, native Bitcoin tokens.

## Create

Registering a new token type. You do this once per token. Define name, ticker, decimals, max supply.

## DKG

Distributed Key Generation. How operators create shared secrets where no single party knows the full key. Used for revocation commitments.

## Final Token Transaction

The complete transaction after operators fill in revocation commitments and withdrawal parameters. This is what gets stored and propagated.

## Mint

Creating new token units. Only the issuer can mint.

## Partial Token Transaction

What the wallet constructs before sending to operators. Missing revocation commitments and other fields that operators fill in.

## Revocation Commitment

A public key embedded in each token output. The private key is split among operators. When you spend, operators release their shares so you can reconstruct the full revocation key.

## Revocation Key

The private key for a revocation commitment. If you try to double-spend by broadcasting old outputs, watchtowers use this to sweep your funds.

## Spark Entity

The group of Spark Operators running the network.

## Spark Operator

A single node that validates, co-signs, and enforces transactions. Each one runs a watchtower.

## Threshold

How many operators must agree. Formula: `(n + 2) / 2`. For 5 operators, threshold is 3.

## Token Identifier

32-byte unique ID for a token. Displayed in bech32m format.

## Transfer

Moving tokens between owners. Inputs must equal outputs.

## TTXO

Token Transaction Output. A single token holding. Owner, amount, token type, revocation commitment, withdrawal parameters.

## Unilateral Exit

Withdrawing to Bitcoin L1 without operator cooperation. You broadcast pre-signed exit transactions, wait for locktime, claim tokens on L1.

## Validity Duration

How long a transaction can wait before operators reject it. Max 300 seconds.

## Watchtower

Service monitoring Bitcoin for double-spend attempts. Each operator runs one. If someone broadcasts a revoked output, watchtowers sweep their funds.

## Withdrawal Bond

Sats you post when exiting to L1. Returned after locktime if legitimate. Swept by watchtowers if you're cheating.

## Withdrawal Locktime

Blocks to wait after broadcasting an exit transaction. Gives watchtowers time to check and respond.