Exact units

Quantity	Representation
IDs / hashes / public keys	32-byte Uint8Array; IDs nonzero
Quantity	Signed i64 bigint lots
Execution prices / marks	u64 bigint ticks in the configured market unit
Cash, basis, funding, fees, payout amounts	i128 bigint quote atoms; field-specific signs/positivity
Authority/deadlines/counts	u64 bigint; time is qualified/injected milliseconds
Leverage	u64 bigint ×10,000 multiplier; 10,000 = 1×
Precision	u32 version, not number of decimal places
Cursor	40-byte Uint8Array
Page revision	32-byte commitment

Market metadata supplies configured unit, quote unit and exact rational conversion: signed fill value = lots × ticks × numerator / denominator in quote atoms. Whole-fill conversion must satisfy the governed exactness rules. Never infer Pacifica/display decimals from the precision-version number. Remaining basis is signed entry value, not display average price. Cash excludes unsettled funding; account equity, free margin and immediately payable funds differ. The wire uses big-endian integers with checked range/length decoding. SDK numeric quantities are bigint; do not round-trip them through JavaScript Number or JSON number. Example amounts are normalized fixtures, not production policy.

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