Errors

All ownership failures map to SdkError. Use err.code() for stable machine-readable codes (also prefixed in C ABI error buffers).

Status vs error

Successful init / checks return OwnershipStatus:

Value	Meaning
`Owned`	Valid ticket for this portal public key and device
`DrmDisabled`	DRM is off for this title; no ticket required

Code	Variant	Typical cause
`ticket_missing`	`TicketMissing`	No ticket cache, or empty ticket while DRM is on
`ticket_expired`	`TicketExpired`	JWT past `exp` (beyond skew)
`ticket_invalid`	`TicketInvalid`	Bad JWT, JWKS, public key mismatch, `own=false`, corrupt file
`device_mismatch`	`DeviceMismatch`	Ticket / cache fingerprint ≠ this machine
`clock_rollback`	`ClockRollback`	System clock earlier than ticket or last-seen time
`internal`	`Io`	Filesystem / path errors

arcane_sdk_init and arcane_check_ownership_offline return:

Return	Meaning
`0`	Success (`Owned` or `DrmDisabled`)
`1`	Null / invalid public key argument
`2`	`SdkError` — message written to `err_buf` as `code: message`

char err[256];
if (arcane_sdk_init(PUBLIC_KEY, err, sizeof(err)) != 0) {
  /* e.g. "ticket_missing: …" */
}