Amounts and base units

On the chain, amounts are decimal strings of base units, never floats.

So the faucet's 1000 GOLD is 100000 base units, and tic-tac-toe's largest stake of 1000 GOLD is also 100000.

Why strings? JSON numbers are floating point in many languages and lose precision above 2^53. Balances are u128 in Rust, and strings carry them intact.

The SDK helpers

web/sdk/divigames.js converts for display and input:

formatAmount("100000", 2)   // "1000" (trailing zeros are trimmed)
parseAmount("12.5", 2)      // "1250"

Always do arithmetic on base units (integers) and only format at the edge.

Transfers

{ "type": "transfer", "to": "<address>", "token": "GOLD", "amount": "2500" }

moves 25.00 GOLD. A transfer larger than your balance fails with an Insufficient error that says what you needed and what you had.